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HE-800A - pennsew parts store

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1. Pin no Signal name Probable symptoms due to poor contact 1 Cutter driving current e Cutter does not operate 2 e Error E 08 is displayed 3 Cutter return driving current 4 Cutter driving current 5 6 Cutter return driving current P9 OPSEN1 Pin no Signal name Probable symptoms due to poor contact 1 24V Special edition 2 5V 3 Input signal spare 1 4 OV 5 24V 6 5V 7 Input signal spare 2 8 OV 9 24V 10 5V 11 Input signal spare 3 12 OV 13 OV 14 OV P10 FAN1 Pin no Signal name Probable symptoms due to poor contact 1 24V The feed pulse motor cooling fan does not spin FAN signal 3 OV P11 OPSOL Pin no Signal name Probable symptoms due to poor contact 1 55V Special edition 2 55V 3 55V 4 Spare solenoid driving current 7 5 Spare solenoid driving current 8 6 Spare solenoid driving current 9 P12 FAN2 Pin no Signal name Probable symptoms due to poor contact 1 24V Special edition 2 Spare input 3 OV 134 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE P13 EXP2 Pin no Signal name Probable symptoms due to poor contact 1 Input signal spare 1 e The feed home position and work clamp home position can 2 Input signal spare 2 not be found 3 Input signal spare 3 e The feed mechanism and work clamp mechanism do not 4 Input signal spare 4 operate 5 Input signal spare 5 e One
2. 4 Install the rotary hook holder 5 with the two screws 6 4280Q 4278Q 3 24 Covers 1 Install the cover 1 the face plate 2 and the eye guard assembly 3 2 Install the rear cover 4 the belt cover 5 and the top cover 6 HE 800A 77 4 ADJUSTMENT 4 ADJUSTMENT Maintenance and inspection of the sewing machine should only be carried out by a qualified technician Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system Turn off the power switch and disconnect the power cord from the wall outlet at the following times otherwise the machine may operate if the treadle is depressed by mistake which could result in injury e When carrying out inspection adjustment and If the power switch needs to be left on when carrying out some adjustment be extremely careful to observe all safety precautions Use only the proper replacement parts as specified by Brother If any safety devices have been removed be absolutely sure to re install them to their original positions and check that they operate correctly before using the machine Any problems in machine operation which result from unauthorized modifications to the machine will not be covered by the warranty maintenance e When replacing consumable parts such as the rotary hook 4 1 Notes on making adjustments When turning on the power to make adjus
3. 4260Q 9 aa NES an a ae a gt _ oO ra i 3 10 ie LA 4261Q 4262Q 1 Provisionally install the thread guide 2 to the thread breakage perceiving shaft 1 with the plain washers 3 and 4 and the screw 5 and then insert the thread breakage perceiving shaft 1 into the arm 2 Provisionally install the thread breakage sensor assembly 6 with the two screws 7 3 Install the cutter bar fixing plate 8 to the thread breakage perceiving shaft 1 with the set screw 9 4 Install the balancer 10 to the cutter bar fixing plate 8 with the screw 11 5 Install the lever stopper 12 at the correct angle with the screw 13 6 Provisionally install the lever stopper 14 with the screw 15 After installing carry out the steps in 4 17 Adjusting the thread breakage detector HE 800A 71 3 ASSEMBLY 3 22 Lubrication mechanism 2 3 22 1 Shaft bush mechanism 4263Q Wick should not protrude from here NOE M POR Push so they touch the upper shaft 4264Q 4265Q 1 Insert the felt 1 into the bush F 2 2 Insert the wicks 3 and 4 into the bush F 2 and insert the felt 5 to stop them from coming out At this time push in firmly so that the felt 1 and the wick 3 are touching the upper shaft 6 If they are not pushed in firmly enough seizure of the upper shaft may occur 3 Insert the wick 7 into the bush F 2 and insert the fel
4. 4 23 Adjusting the rotary hook lubrication 4364Q 4365Q To oil tank A 4366Q 1 Remove the rubber cap 1 2 Turn the adjusting screw 2 to adjust the lubrication amount Adjust so that approximately 10 drops of oil are released when the sewing machine is run at a speed of 4 000 rpm for three cycles to sew about 114 stitches Use Kraft paper 3 or similar to catch the oil drops As a guide the optimum position can be obtained if the adjusting screw 2 is tightened as much as possible and then loosened about two turns Furthermore fine adjustments can then be made using the rotary hook joint screw 4 If the lubrication amount has been reduced run the machine for 200 300 sewing cycles and then check it again Note If lubrication stops it will cause problems such as rotary hook seizure and thread breakages 102 HE 800A 4 ADJUSTMENT 4 24 Adjusting the needle up stop position HE 800A The needle up stop position is adjusted so that the index mark 2 on the machine pulley 1 is inside the mark 4 on the belt cover 3 If adjustment is necessary loosen the screw 5 of the machine pulley 1 The machine pulley 1 will stop more slowly if the screw 5 is moved counter to the normal direction of rotation and will stop more quickly if the screw 5 is moved in the normal direction of rotation Note The screw 6 at the D mark is an adjusting screw for the needle
5. 46 HE 800A 2 24 Lower shaft and idle pulley mechanisms ee ee ee ee ee 47 A ASSEMBLY ee ee ee ee ee ee ee ee 48 3 1 Lower shaft and idle pulley mechanisms 48 3 2 Lower thread trimmer mechanism 1 49 3 3 Lower thread trimmer mechanism 2 50 3 4 Feed mechanism 1 s sttttttsssereeee tees 51 3 5 Feed mechanism 2 s trtttttstsereeee sete 53 3 6 Bobbin presser mechanism tttttttttte 54 3 7 Tension release mechanism 1 ss tt ttt ttt 55 3 8 Tension release mechanism 2 ss tttttttttttt 56 3 9 Presser lifter mechanism 1 tttttttttttttse 57 3 10 Presser lifter mechanism 2 ttt tttttttttte 58 3 11 Presser lifter mechanism 3 t ttttttttttte 59 3 12 Needle zigzag mechanisM sttsttttttees 60 3 13 Cutter mechanism 1 rttttttttttttetttte 61 3 14 Cutter mechanism 2 tttttrttrtttettt tees 62 3 15 Upper shaft and tension pulley mechanism ee ee eee ee 64 3 16 Lubrication mechanism 1 s sttttttttttttee 65 3 1 6 1 4 Oil tubes eee ee ee ee 65 3 17 Needle bar and thread take up mechanisms 1 rtttttttttetseeeeseee sees 66 3 18 Needle bar and thread take up mechanisms 2 srtrtttttttttseeeeeeee eee 67 3 19 Presser bar mechanism s tttrtttsrtrreee 68 3 20 Upper thread trimmer mechanism 69 3 21 Thread breakage detection mechanism 71 3 22 Lubrication mechanism 2 tttttttttttee 72 3 22 1 Shaft bush m
6. 89 4 14 1 Adjusting the longitudinal feed arm assembly position 1t ee tettette eree 90 4 14 2 Adjusting the trimmer driving arm assembly position 15t tetetete ertt ereee 90 4 14 3 Adjusting the lateral position of the upper thread scissors at the sewing start 91 4 14 4 Adjusting the longitudinal position of the upper thread scissors 1st ettr 91 4 14 5 Adjusting the cutting depth of the upper thread scissors eee ee ee ee 92 4 14 6 Adjusting the installation height of the upper thread scissors tttttttereeeee 93 4 14 7 Adjusting the upper thread scissors gradual opening timing eee eee eee 94 4 14 8 Adjusting the upper thread scissors opening timing e eeeeeeeeetert errre 95 4 15 Adjusting the lower thread trimming 96 4 15 1 Adjusting the lower thread trimmer fixed knife engagement amount sttses 96 4 15 2 Adjusting the lower thread retaining amount ee ee ee ee 96 4 15 3 Adjusting the lower thread clamp opening timing ttt ttttttteeeeeeeee 97 4 15 4 Adjusting the lower thread clamp opening amount ttt sss treet ttt ee eeeeeees 98 4 16 Adjusting the bobbin presser t rstss 98 4 17 Adjusting the thread breakage detector 99 4 18 Adjusting the thread tension at the tack tension control ee ee ee ee ee ee ee ad 100 4 19 Adjusting the thread tension at the zigzag tension control ee ee ee ee ee ee ee ee ad 100 4 20 Adjusting the upper thread feeding a
7. 37 4210Q 17 sl Q 31 36 ap o gt Se 29 13 o3 wee ee 31 40 30 Ge Zs 32 gt 35 4208Q 4211Q Press the thread guide cover 2 on the arm thread guide L 1 and provisionally tighten the screw 3 After installing the needle bar thread guide by referring to 3 18 Needle bar and thread take up mechanisms 2 tighten the screw 3 to adjust the gap between the needle bar thread guide 5 and arm thread guide L 1 to 0 5 mm or more when the needle bar 4 is at its highest point at the maximum right zigzag position 3 mm Connect the adjusting lever 6 lever link 7 and tension take up lever 8 with the two shoulder screws 9 Install the lever 10 to the adjusting lever 6 with the screw 11 and the washer 12 Tension take up lever assembly 13 5 Insert the washer 14 into the bottom of the tension take up lever assembly 13 and then install it to the arm with the shoulder screw 15 6 Install the tension take up lever assembly 13 to the tension release shaft 18 with the screw 16 and the washer 17 7 Place the two tension discs 19 tension disc pressers 20 and 21 tension adjusting spring 22 washer 23 and tension nut 24 onto the sub tension stud 25 Sub thread tension assembly 26 8 Insert the tension release pin 27 into the sub thread tension assembly 26 and then install it to the arm Adjust the thread tension while referring to 4 18 Ad
8. Install the felt holder 3 with the screw 4 and then secure the oil tube assembly 1 Install the oil tube 5 that is connected between the oil terminal and the oil outlet with the cord holder 6 screw 7 and washer 8 4 Clamp the oil tube assembly 1 under the cord holder 6 5 Install the tube support 9 with the screw 10 and then secure the oil assembly 1 and the oil tube 5 that is connected between the oil terminal and the oil outlet so that they do not touch the pulse motor for presser lifter 6 Install the oil tube 11 that is connected to the oil terminal and the plunger pump with the tube support M 12 and the screw 13 pass it through the arm hole 14 and then secure it to the arm with the fastening band 15 At this time bind the oil tube carefully so as not to break it w N gt HE 800A 65 3 ASSEMBLY 3 17 Needle bar and thread take up mechanisms 1 4243Q em a 11 5 Screw stop side 4244Q 1 Install the crank rod guide 1 with the two bolts 2 and the screw 3 2 Install the needle bar bracket slide block 4 to the thread take up lever set 5 3 Pass the wick 6 through the support shaft hole in the arm and the thread take up support hole as shown in the illustration Insert the washer 7 into the thread take up lever set 5 and then install it to the thread take up crank 8 Insert the needle bar bracket slide b
9. Rotation direction 4048Q 1 When the machine pulley 1 is turned in the direction of the arrow the rotation is transmitted to timing pulley U 3 that is secured to the upper shaft 2 2 The timing belt 4 is attached to timing pulley U 3 and it accurately transmits the rotation of the upper shaft to the timing pulley 5 3 The timing pulley 5 is secured to the lower shaft 6 and it transmits the rotation to the rotary hook joint 7 that is secured to the end of the lower shaft 6 4 The rotary hook 8 is secured to the rotary hook joint 7 and rotates fully together with the rotary hook joint 7 2 HE 800A 1 MECHANICAL DESCRIPTIONS 1 3 Needle zigzag mechanism 4049Q 1 The operation of the pulse motor 1 is transmitted as reciprocal motion to the zigzag lever 3 via the zigzag connection rod 2 2 The zigzag lever 3 is secured to the zigzag lever F assembly 4 and causes the needle bar bracket slide block 5 that is linked onto the end of the zigzag lever F assembly 4 to move in a reciprocal motion 3 The needle bar bracket slide block 5 is linked to the groove in the needle bar bracket 6 and causes the needle bar bracket 6 to move in a reciprocal motion HE 800A 3 1 MECHANICAL DESCRIPTIONS 1 4 Presser foot lifter mechanism 5 3 1 C N J O C FN 9 10 r
10. 4256Q 4258Q 34 wa 13 Apply grease to 36 and 37 ey a Aligned 4257Q 4259Q 13 Install the upper thread trimmer lever set 34 to the upper thread trimmer fulcrum shaft 1 with the washer 35 and the two shoulder screws 36 14 Place the roller 37 onto the support stud 13 and then place it into the groove in the presser roller bracket 38 15 Pass the longitudinal feed arm pin 19 through the upper thread trimmer lever set 34 and provisionally install the longitudinal feed arm assembly 39 to the trimmer driving lever 41 with the bolt 40 16 Provisionally install the trimmer driving arm assembly 42 to the trimmer driving lever 44 with the bolt 43 17 Turn on the power and after the mechanism moves to the home position press the RESET key to lower the work clamp 18 Tighten the bolt 40 so that the slot of the upper thread trimmer lever set 34 and the edge of the washer 35 are aligned 19 Tighten the bolt 43 so that the stop plate 9 and the stopper 30 are in the positions shown in the illustration 20 Attach the larger hooks of the two springs 45 to the pins 46 on the arm and the smaller hooks to the upper thread trimmer lever set 34 21 Install the upper thread trimmer assembly 47 to the upper thread trimmer lever set 34 with the screw 48 spring washer 49 and plain washer 50 70 HE 800A 3 ASSEMBLY 3 21 Thread breakage detection mechanism
11. Remove the oil tube assembly 13 HE 800A 31 2 DISASSEMBLY 2 10 Upper shaft and tension pulley mechanisms 4109Q 4110Q 4111Q 1 Loosen the two set screws 1 and then remove the pulley assembly 2 2 Remove the two screws 3 and then remove the synchronizer assembly 4 from the arm 3 Remove the two bolts 5 and plain washers 6 and then remove the tension pulley assembly 7 4 Remove the screw 8 and set screw 9 and then remove the thread take up crank 10 from the upper shaft assembly 11 5 Loosen the two set screws 12 and then remove the set screw collar 13 6 Loosen the two set screws 14 and then remove the bobbin winder pulley 15 7 Loosen the two set screws 16 and then remove the timing pulley U assembly 17 8 Remove the timing belt 18 9 Remove the ball bearing 19 32 HE 800A 2 DISASSEMBLY 2 11 Cutter mechanism 1 4112Q 4114Q 4113Q 4115Q OMONDOABRWDND Remove the screw 1 and then remove the cutter 2 from the cutter holder DL 3 Remove the two screws 4 and then remove the cutter holder DL 3 from the cutter holder M 5 Remove the two bolts 6 and then remove the cutter holder M 5 from the cutter holder 7 Remove the bolt 8 and then remove the cutter holder 7 from the cutter driving shaft 9 Remove the screw 10 and then remove the cutter sensor setting plate 11 Re
12. Work clamp PM driving current B Work clamp PM driving current C Work clamp PM driving current D Oo BR O h gt Work clamp PM driving current F e The work clamp home position can not be found e The work clamp mechanism does not operate e Error E 07 is displayed P6 POWER Pin no Signal name Probable symptoms due to poor contact 1 55V for PM power supply DC55V 55V for PM power supply DC55V POV POV 24V OV N IOIA N M55V for cutter power supply DC55V M55V for cutter power supply DC55V 9 MPOV 10 MPOV e The work clamp home position and feed home position can not be found e The work clamp mechanism and feed mechanism do not operate e One of error E 06 and E 07 is displayed e Cutter does not operate e Error E 08 is displayed P7 OPSEN2 Pin no Signal name Probable symptoms due to poor contact 24V 5V Input signal spare 4 OV 24V 5V Input signal spare 5 OV O CO N OD Oo A OIN gt 24V O 5V n Ey Cutter signal home position sensor N OV e Cutter does not operate e Error E 08 is displayed HE 800A 133 6 ELECTRIC COMPONENTS AND SOFTWARE P8 CUTTER
13. 20 21 AC18V D input 22 AC18V D input 23 24 25 AC18V E input 26 AC18V E input 27 28 29 AC18V F input 30 AC18V F input HE 800A 129 6 ELECTRIC COMPONENTS AND SOFTWARE P15 DC300V Pin no Signal name Probable symptoms due to poor contact 1 DC300V e The zigzag home position can not be found e The zigzag mechanism does not operate 2 DCOV e Error E 05 is displayed P16 NPM Pin no Signal name Probable symptoms due to poor contact 1 Zigzag PM driving current A e The zigzag home position can not be found 2 Zigzag PM driving current B e The zigzag mechanism does not operate 3 Zigzag PM driving current C e Error E 05 is displayed 4 Zigzag PM driving current D 5 Zigzag PM driving current F 6 P19 OPSOL Pin no Signal name Probable symptoms due to poor contact 1 Spare solenoid e The tension release solenoid does not operate 2 3 Tension release solenoid 4 gt 5 40V 6 40V P20 AC17 AC30V Pin no Signal name Probable symptoms due to poor contact 1 AC30V input e The tension release solenoid does not operate 2 AC30V input e The control box fan does not operate 3 e One of error E 41 and E 42 is displayed 4 AC17V input 5 AC17V input P22 EXPAND1 Pin no Signal name Probable symptoms due to poor contact 1 5V e
14. 28 Ps Panel DIP switch A No 1 Segment 3 A 29 Panel DIP switch A No 2 Segment 3 B 30 Panel DIP switch A No 3 Segment 3 C 31 Panel DIP switch A No 4 Segment 3 D 32 Panel DIP switch A No 5 Segment 3 E 33 Panel DIP switch A No 6 Segment 3 F 34 Panel DIP switch A No 7 Segment 3 G 35 Panel DIP switch A No 8 Segment 3 D P HE 800A 145 6 ELECTRIC COMPONENTS AND SOFTWARE No Check mode Check items Indicator Segment 36 Circuit board DIP switch 2 No 1 Segment 2 A 37 Circuit board DIP switch 2 No 2 Segment 2 B 38 Circuit board DIP switch 2 No 3 Segment 2 C 39 Circuit board DIP switch 2 No 4 Segment 2 D 40 Circuit board DIP switch 2 No 5 Segment 2 E 41 Circuit board DIP switch 2 No 6 Segment 2 F 42 Circuit board DIP switch 2 No 7 Segment 2 G 43 ES Circuit board DIP switch 2 No 8 Segment 2 D P 44 Circuit board DIP switch 1 No 1 Segment 1 A 45 Circuit board DIP switch 1 No 2 Segment 1 B 46 Circuit board DIP switch 1 No 3 Segment 1 C 47 Circuit board DIP switch 1 No 4 Segment 1 D 48 Circuit board DIP switch 1 No 5 Segment 1 E 49 Circuit board DIP switch 1 No 6 Segment 1 F 50 Circuit board DIP switch 1 No 7 Segment 1 G 51 Circuit board DIP switch 1 No 8 Segment 1 D P The value is displayed in the parameter display LED When the treadle is depressed forward 52 F3 Pedal swi
15. 2 and the arm is 0 1 0 5 mm HE 800A 99 4 ADJUSTMENT 4 18 Adjusting the thread tension at the tack tension control 4357Q 1 Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 2 Loosen the set screw 1 and then adjust the clearances between the tension release cam 2 and the tension release pin 3 as shown in the illustration 3 Press the RESET key and check that the tension disc opening amount is 0 5 1 0 mm when the work clamp is raised 4 Press the RESET key once more and check that the tension discs are fully closed when the work clamp is lowered 4 19 Adjusting the thread tension at the zigzag tension control 0 5 1 0mm 4358Q 100 HE 800A Position the tension release solenoid as described in 3 7 Tension release mechanism 1 before carrying out this adjustment 1 Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 2 Loosen the set screw 1 and then move the tension stud bracket assembly 2 in and out to adjust so that the tension disc opening amount is 0 5 1 0 mm 3 Check that the tension discs are fully closed when the power is turned off 4 ADJUSTMENT 4 20 Adjusting the upper thread feeding amount 4359Q 4360Q 1 Loosen the screw 1 and then turn the tension take up lever 2 to adjust the upp
16. 6 Provisionally install the tension release solenoid assembly 14 with the two screws 15 7 Connect the tension release solenoid assembly 14 and the tension release link 12 with the shoulder screw 16 8 Adjust the position of the tension release solenoid assembly 14 using a gauge so that the tension release link 12 protrudes from the edge of the tension stud bracket assembly 17 on the arm by 19 2 0 2 mm and then tighten the two screws 15 9 Insert the tension release pin 18 into the tension stud bracket assembly 17 and then insert it into the arm 10 Tension the set screw 19 so that the tension discs are open by 0 5 to 1 0 mm when the tension release link 12 is pushed in the direction of the arrow B If not using a gauge insert the tension release pin 18 into the tension stud bracket assembly 17 and insert it into the arm and then tighten the set screw 19 at almost the center of the screw stop on the tension stud bracket assembly 17 With the tension release link 12 pushed in the direction of the arrow B Figure C move the tension release solenoid assembly 14 so that the tension discs are open by 0 5 to 1 0 mm and then tighten the two screws 15 HE 800A 55 3 ASSEMBLY 3 8 Tension release mechanism 2 4207Q 4209Q 25 20 199 N 22 a0 le a 2 0 5mm or more 24 m 13
17. 7 I NEN 11 L J A 8 lm y f 6 12 Sa 13 14 G 4050Q 1 When the pulse motor 1 operates the gear 2 that is installed to the pulse motor shaft engages with the presser driving arm 3 so that the guide bracket 4 moves along the guide shaft 5 and moves the presser driving arm 3 up and down 2 The presser driving arm 3 causes the presser foot lifter connecting rod 6 to move up and down 3 The movement of the presser foot lifter connecting rod 6 is transmitted via the knee lifter lever 7 upper thread trimmer driving link 8 and knee lifter lever 9 to move the presser bar guide bracket assembly 10 up and down 4 The feed arm 11 is secured to the presser bar guide bracket assembly 10 and it moves the presser roller bracket 12 that is secured to the bottom edge of the feed arm 11 up and down 5 Feed arm support 14 that is connected to the feed arm 13 is hooked onto the presser roller bracket 12 and it moves the work clamp 15 up and down HE 800A 1 MECHANICAL DESCRIPTIONS 1 5 Feed mechanism 4051Q 1 A timing belt 4 is attached to pulley A 2 that is secured to the pulse motor 1 and to pulley B 3 and this timing belt 4 transmits the motion from the pulse motor 1 2 The feed arm support 5 is secured to the timing belt 4 The feed arm support 5 moves back and forth while being gui
18. Upper thread mis winding Cause Check Remedy Page Upper thread Installation height Adjust the upper thread scissors installation height 93 scissors Upper thread scissors Adjust the timing so that the upper thread scissors gradual opening timing gradually start opening when the feed mechanism 94 moves about 1 5 2 5 mm Upper thread scissors Adjust so that the cam opens the stop plate properly 95 opening timing Upper thread trimmer Polish blade of upper thread trimmer M and upper assembly movement thread guide with buffer Check for burrs on the top surface of upper thread trimmer M Replace the parts Lateral position of upper Adjust the lateral position of the upper thread thread scissors scissors Approx 1 mm 91 4020Q Stitch quality Upper thread tension Decrease tension to such a degree that it does not Instruction eree ee aa influence stitch quality Laana 0000an la manual es Zigzag width in the zigzag Use parameter number 05 to increase the zigzag nciruktion stitch portion width to such a degree that it does not influence the manal seam shape Work clamp Uneven material feeding Increase work clamp pressure Press material so that the material is properly stretched When using knits or woven materials replace the parts with the 3 specification parts 85 Length feed plate for specification 3 work clamp assembly for knits needle plate 1 2 for specification 3 Underlay Unde
19. so that there is no play in the needle bar bracket assembly 1 Install the set screw 15 and nut 16 to the stopper 15 and then install it to the arm with the two screws 18 10 Install the set screw 19 and nut 20 to the arm 11 When the needle bar 2 is at its maximum zigzag position tighten the set screws 16 and 19 against the needle bar bracket assembly 1 and then loosen them again by about 1 4 of a turn each Then tighten the nuts 17 and 20 12 Insert the needle bar thread guide 21 into the needle bar 2 HE 800A 67 3 ASSEMBLY 3 19 Presser bar mechanism 4248Q 4250Q 1 q 3 ou 2 eS 4 P 10 11 Miz Q Apply 2 to 9 Align POTT i TIE install with 15 edges 14 at the top err i 12 Top o 10mm Ol o 0 Bottom 10mm 4249Q 4291Q 4251Q 1 Install the presser bar lifter link 1 to the presser bar guide bracket 3 with the shoulder screw 2 and then install the set screw 4 to the presser bar guide bracket 3 Presser bar guide bracket assembly 5 Install the roller 6 to the roller shaft 9 with the plain washer 7 and the retaining ring 8 Install the roller shaft 9 to the presser roller bracket 10 and then tighten the set screw 11 Provisionally install the needle bar guide 12 to the arm with the two screws 13 as shown in the illustration Insert the presser ba
20. 16 from the thread take up lever set 18 10 Remove the slide block 19 of the needle bar bracket assembly 15 from the zigzag lever shaft 20 11 Remove the bolt 21 and then remove the needle bar guide 22 from the needle bar bracket assembly 15 12 Loosen the screw 23 of the needle bar clamp 16 and then remove the needle bar 9 HE 800A 29 2 DISASSEMBLY 2 8 Needle bar and thread take up mechanism 2 4104Q 4105Q 1 Remove the set screw 1 and then remove the support shaft 2 2 Remove the wick 3 and the felt 4 3 Loosen the two set screws 5 4 Remove the thread take up lever set 6 and the washer 7 from the thread take up crank 8 5 Remove the needle bar bracket slide block 9 6 Remove the two bolts 10 and the screw 11 and then remove the crank rod guide 12 30 HE 800A 2 DISASSEMBLY 2 9 Lubrication mechanism 2 2 9 1 Oil tubes 4106Q 4107Q 4108Q aRWND O Remove the fastening band 1 Remove the screw 2 and then remove the tube support M 3 Disconnect the oil tube 4 that is connected to the oil terminal and the plunger pump Remove the screw 5 and then remove the tube support R 6 Remove the cord holder 7 screw 8 and washer 9 and then disconnect the oil tube 10 that is connected between the oil terminal and the oil outlet Remove the screw 11 and then remove the felt holder 12
21. 2177 HE 800A 13120853F 2004 02 F 1 Printed in Japan
22. 220V 380V 400V specifications CN3 230V specification CN4 1 Turn off the power ants eae ae 2 Check if the timing belt is attached E 97 l re eTR E E 3 Turn the pulley by hand and check that the upper shaft has 6 tains lf be motors seral does not lock and the pulley is not loose pe TO K 4 Check that connectors P3 and P6 on the main P C number is G03xxxxxx or later board are properly connected Three resetting methods are available depending on the application A By selecting a different program number If you would like to keep the program which exceeds the area 1 Press the SELECT key 2 Select a different program number and press the ENTER key Sewing data values exceed the NEA needle plate size or work clamp size If the Ce for the sey pegat bese n not which have been set using the panel exceed the sewing area the error will be cleared DIP switches B By initializing the program While pressing the ENTER key press the RESET key All parameters 00 to 69 for the program will then be initialized and the machine will switch to program mode C By initializing all programs Refer to 12 1 Initializing all programs in the instruction manual HE 800A 151 6 ELECTRIC COMPONENTS AND SOFTWARE 152 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE 6 10 Control circuit block diagram Control box m Machine head PANEL PCB E l 850453 PANEL Stop switch 1 5V 11
23. 24 4092Q 26 HE 800A 2 DISASSEMBLY 4093Q 4094Q 4095Q 9 Remove the two shoulder screws 25 and the washer 26 and then remove the thread trimmer lever set 5 from the upper thread trimmer fulcrum shaft 27 10 Remove the roller 28 11 Remove the two screws 29 and plain washers 30 and then remove the setting plate 31 from the upper thread trimmer lever assembly 32 12 Remove the nut 33 and the plain washer 34 and then remove the support shaft 35 from the setting plate 31 13 Remove the two collars 36 and the screws 37 and then remove the back plate 38 and the stop plate 39 from the upper thread trimmer lever assembly 32 14 Remove the spring 40 15 Remove the screw 41 and then remove the spring hook plate 42 from the upper thread trimmer lever assembly 32 16 Remove the rubber cap 43 17 Loosen the two set screws 45 of the set screw collar assembly 44 and then remove the upper thread trimmer fulcrum shaft 27 HE 800A 27 2 DISASSEMBLY 2 6 Presser bar mechanism 4096Q 4098Q 4099Q 4097Q 4100Q Loosen the presser adjusting nut 1 Remove the presser adjusting screw 2 and then remove the spring 3 compression spring 4 and plain washer 5 3 Remove the shoulder screw 6 and then remove the presser bar guide bracket assembly 7 from the knee lifter lever 8 4 Remove the screw 9
24. 4017Q Cutter bar guide Smoothness of cutter Adjust the cutter bar guide so that the cutter 61 operation operates smoothly with no play 5 19 Cutter does not return Cause Check Remedy Page Cutter Cutter blade If blade is worn or chipped sharpen it or replace it Sticks in material Needle plate Replace with the special needle plate optional TE manua Cutter bar guide Smoothness of cutter Adjust the cutter bar guide so that the cutter 61 operation operates smoothly with no play 5 20 Cutter and upper thread scissors touch Cause Check Remedy Page Upper thread Check if the cam opens Adjust the cam position scissors the stop plate If the feed mechanism operates when the cam has not opened the stop plate the cutter will bump against the upper thread scissors NG LJ OK L i 4018Q 5 21 Seam is cut Cause Check Remedy Page Length of knife Length of knife Set parameter number 02 to the same value as the Instruction setting length of the knife being used manual Knife space setting Cutting of zigzag seam Use parameter number 06 to set the knife X space Instruction Use parameter number 08 to set the knife X manual position alignment Cutter Cutter play Adjust the cutter bar guide so that the cutter 61 P a aadi operates smoothly with no play 8 eee fleece eee Cutter knife bending Use the cutter holder option to prevent the cutter knife from becoming bent 88 4019Q HE 800A 117 5 TROUBLESHOOTING 5 22
25. 5 secure it by tightening the two set screws 10 6 Install the thread take up crank 11 to the upper shaft assembly 4 with the screw 12 and the set screw 13 7 Secure the set screw collar assembly 8 to the upper shaft assembly 4 using the thread take up crank 11 and the two set screws 14 so that there is no play 8 Provisionally install the tension pulley assembly 15 with the two bolts 15 and plain washers 17 9 After installing the needle bar in 3 18 Needle bar and thread take up mechanism 2 set the phase between the upper shaft and the lower shaft so that the mating mark A on the lower shaft timing pulley 18 is facing straight down when the upper shaft assembly 4 is at the needle up stop position 10 While pushing the tension pulley assembly 15 with a force of 100 N secure it by tightening the two bolts 16 11 Install the synchronizer assembly 19 to the arm with the two screws 20 12 Install the pulley assembly 21 with the two set screws 22 so that the screw flat should align with the set screw which comes first when the lower shaft is rotated in the rotation direction and so that the clearance between it and the synchronizer assembly 19 is 0 5 mm w N gt 64 HE 800A 3 ASSEMBLY 3 16 Lubrication mechanism 1 3 16 1 Oil tubes 4240Q 4241Q 4242Q Insert the oil tube assembly 1 into the arm and then insert it into the hole in the thread take up cover 2
26. 9 5 Remove the screw 10 and then remove the tube support D 11 from the oil tube 12 that is connected between the oil terminal and the oil outlet and from the bed 6 Remove the oil tube 13 that is connected between the oil terminal and the plunger pump from the lubricating hole to the left of bush M 14 7 Remove the screw 15 and then remove the tube support 16 from the oil tube 17 and from the bed 8 Remove the outlet oil tube 17 from the lubricating hole to the right of bush M 14 9 Remove the oil tube 3 that is connected between the plunger and the filter from the inlet hole to the left of bush M 14 10 Remove the oil tube 18 from the inlet hole to the right of bush M 14 11 Remove the two screws 19 and then remove the two plungers 20 and the two compression springs 21 from bush M 14 WON 22 HE 800A 2 DISASSEMBLY 2 3 3 Oil terminal mechanism 4078Q 13 11 10 4080Q 8 49 15 D S DAN 16 18 5 Ea 9 17 KS CR 4079Q 4081Q 1 Remove the screw 1 and then remove the cap 2 and the felt 3 Remove the screw 4 and then remove the felt base A 5 from the wick base support 6 Remove the two screws 7 and then remove the wick base support 6 Remove the two screws 8 and then remove the oil terminal 9 from the wick base support 6 Remove the oil tube 10 that is connected between the oil terminal and the oil
27. Fig A gt Fig B 4304Q Cutter groove iz wu 0 3mm 4305Q 4306Q 1 Loosen the screw 5 and adjust the cutter Y direction using cutter holder DL 6 so that the clearance between the needle bar 4 and the cutter 1 is 0 3 mm Note When replacing the cutter be careful not to allow the cutter to touch the needle bar because of any play in the cutter installation position 2 Loosen the two bolts 7 and adjust the cutter X direction using cutter holder M 8 so that the cutter 1 goes into the center of the cutter groove 3 Loosen the bolt 9 and move the cutter holder 10 to adjust the direction of rotation 4 Check that the edge of the cutter holder 10 is touching the stepped section of the cutter driving shaft 11 and then tighten the bolt 9 5 After adjusting push the upper thread scissors 2 back to its original position Fig A HE 800A 87 4 ADJUSTMENT 4 12 1 When using the special needle plate needle plate RB 4307Q 4308Q The special needle plate is used to prevent the cutter from getting stuck in the material and not returning 1 The special needle plate has a narrow cutter groove of 0 3 0 4 mm so use the accessory positioning plate 1 to adjust the cutter installation position Note If this adjustment is not made the cutter may touch the needle plate and damage to the cutter may result 2 Install the cutter holder 2 to minimize any play in
28. If you press parameter keys 4 and 5 while operating at check code 08 the presser lifter pulse motor will operate one step at a time Refer to 6 8 Output check list 2 Loosen the bolt 9 and then adjust the driving arm roller 3 so that the clearance between the stopper 7 of the upper thread scissors assembly 6 and the opening cam bracket 8 is 0 0 5 mm Note If the stopper 7 is adjusted so that it presses too firmly it may cause the presser foot lifter pulse motor to go out of step 92 HE 800A 4 ADJUSTMENT 4 146 Adjusting the installation height of the upper thread scissors 4325Q 4331Q 1 imm 4332Q 4333Q 1 Turn off the power with the feed mechanism at the home position and then slowly move the trimmer driving arm 1 forward until the driving arm roller 3 is at its highest position on the cam A of the upper thread trimmer lever 2 2 Loosen the screw 4 and then move the upper thread scissors 5 up or down to adjust the clearance between the upper thread scissors 5 and the work clamp 6 to approximately 1 mm Note The work clamp 6 will tilt when sewing joints so adjust so that the upper thread scissors 5 do not touch it If the upper thread scissors 5 touch the work clamp 6 the work clamp lifter pulse motor may get out of step If the tilting of the work clamp 6 causes skipped stitches to occur when sewing material joints use the accessory auxili
29. The feed home position and work clamp home position can 2 5V not be found 3 5V e The feed mechanism and work clamp mechanism do not 4 5V operate 5 24V e One of error E 06 and E 07 is displayed 6 24V e 55 V power supply for driving the feed mechanism and 7 24V work clamp PM control is not possible 8 24V e Error E 44 is displayed 9 Feed PM clock e The valve does not operate 10 Work clamp PM clock 11 12 13 Work clamp PM direction signal 14 Feed PM direction signal 15 Work clamp PM current control signal 16 Feed PM current control signal 17 PM current OFF signal 130 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE Pin no Signal name Probable symptoms due to poor contact 18 e The feed home position and work clamp home position can 19 not be found 20 e The feed mechanism and work clamp mechanism do not 21 VALV 1 operate 22 VALV2 e One of error E 06 and E 07 is displayed 23 VALV3 e 55 V power supply for driving the feed mechanism and 24 VALV4 work clamp PM control is not possible 25 VALV5 Error E 44 is displayed 6 VALV6 e The valve does not operate 27 55V OFF signal 28 55V relay output signal 29 OV 30 OV 31 OV 32 OV P23 EXPAND2 Pin no Signal name Probable symptoms due to poor contact 1 Input signal spare 1 e The feed home position and work clamp
30. and adjust so that the amount of deflection at this time is 3 5 mm 15 Place the belt holder 25 onto the timing belt 12 and then install it to the feed arm 6 with the two bolts 26 BRON HE 800A 51 3 ASSEMBLY 4191Q 34 35 4192Q 4193Q 16 Install the DC fan motor 40 assembly 27 to the feed motor cover 29 with the two screws 28 17 Install the feed motor cover 29 to the bed with the two screws 30 18 Install the feed home position sensor 31 to the feed sensor support plate 33 with the screw 32 19 Install the feed sensor support plate 33 to the bed with the two screws 34 and plain washers 35 20 Pass the cords for the feed pulse motor 18 DC fan motor 40 assembly 27 and feed home position sensor 31 through the four cord holders 36 and secure to the bed with the four screws 37 and the two plain washers 38 52 HE 800A 3 ASSEMBLY 3 5 Feed mechanism 2 4194Q g 4195Q 4196Q Provisionally install the length feed plate 1 to the feed arm support 4 with the two bolts and spring washers 3 Provisionally install the two feed presser plates 5 to the bed with the four screws 6 Tighten the four screws 6 so that the window in the length feed plate 1 is in the center of the needle plate when the feed arm 7 is moved forward and back Tighten the two bolts 2 so that the feed arm 7 moves sm
31. centering on the screw 16 7 The lower thread retainer 17 is secured to the lever 14 so the lower thread retainer 17 starts to operate 8 When the lower thread retainer 17 operates the collar 19 that is installed to the lower thread clamp plate 18 moves over the ridge line of the cam of the lower thread retainer 17 and the lower thread clamp plate 18 starts to close and engages with the lower thread presser 20 so that the lower thread is clamped 9 The lower thread retainer 17 then continues operating 10 The fixed knife 21 is secured to the knife driving lever 13 so that when the knife driving lever 13 operates the cam section of the movable knife 22 that is secured to the fixed knife 21 moves over the cam section of the base plate 23 so that the movable knife 22 starts to close When the lower thread retainer 17 has finished operating the movable knife 22 meshes fully with the fixed knife 21 and cuts the lower thread HE 800A 17 1 MECHANICAL DESCRIPTIONS 4068Q 4069Q 11 When feed guide shaft B 24 that is secured to the feed arm support moves forward after sewing starts the roller 27 that is secured to the opening plate 25 by means of the roller shaft 26 moves over feed guide shaft B 24 and the opening plate 25 rotates centering on the shoulder screw 28 12 The opening plate 25 presses against the collar 24 that is installed to the lower thread clamp plate
32. eee 6 5 Description of DIP switches rs 6 5 1 i Panel DIP switches ee ee er 6 5 2 Circuit board DIP switches 6 6 Description of machine motor parameters 6 7 y Input check list ee eee a eee ee ee ee 6 8 Output check list ee ee eee eee ee ee ee 6 9 Error code table ee eee ee ee eee 6 10 Control circuit block diagram HE 800A 1 MECHANICAL DESCRIPTIONS 1 MECHANICAL DESCRIPTIONS 1 1 Needle bar and thread take up mechanisms Rotation direction 1 When the machine pulley 1 is turned in the direction of the arrow the rotation is transmitted to the thread take up crank 3 that is secured to the end of the upper shaft 2 2 The needle bar crank 4 is secured to the thread take up crank 3 and it transmits vertical motion to the needle bar clamp 7 via the needle bar crank rod 5 and needle bar bracket slide rod 6 At this time the needle bar crank rod 5 moves together with the crank rod guide 9 via the needle bar bracket slide rod 8 3 Elliptical motion is transferred to the thread hole of the thread take up 10 via the needle bar crank 4 4 The needle bar 11 is secured to the needle bar clamp 7 and it moves smoothly up and down while being guided by the bushings at the top and bottom of the needle bar guide 12 and needle bar bracket 13 HE 800A 1 1 MECHANICAL DESCRIPTIONS 1 2 Upper shaft lower shaft and rotary hook mechanisms
33. not too loose when it is coming out from the bobbin case If the lower thread retaining amount is too small The lower thread will pull out of the lower thread clamp plate e at the first stitch at the sewing start which can cause problems such as lower thread cast off lower thread loops or poor lower thread winding If the lower thread retaining amount is too great This can cause problems such as poor sealing at the sewing start or wound lower thread sticking out of the rear tack 96 HE 800A 4 ADJUSTMENT 4 15 3 Adjusting the lower thread clamp opening timing Lower thread releases from Sewing start Lower thread winds around seam lower thread clamp 1 Loosen the set screw 2 of the feed arm support 1 and then align reference line A of feed guide shaft B 3 with the edge of the feed arm support 1 2 When the feed mechanism moves by 6 7 mm the opening plate 4 moves and the lower thread clamp 5 opens 3 To change the opening timing loosen the set screw 2 and move the feed guide shaft B 3 to the left or right to adjust The end of the thread which is being held by the lower thread clamp 5 is wound around inside the seam If the opening timing is too early it can cause problems such as poor winding or pulling up of the lower thread If the opening timing is too late it can cause problems such as stretching uneven seams or bird s nests at the sewing start depending on the type of material
34. operate if the treadle is depressed by mistake which could result in injury e When threading the needle e When replacing the needle and bobbin e When not using the machine and when leaving the machine unattended If using a work table which has casters the casters should be secured in such a way so that they cannot move Attach all safety devices before using the sewing machine If the machine is used without these devices attached injury may result Do not touch any of the moving parts or press any objects against the machine while sewing as this may result in personal injury or damage to the machine A Do not touch the motor cover during operation and for one hour after operation has finished otherwise burns may result If an error occurs in machine operation or if abnormal noises or smells are noticed immediately turn off the power switch Then contact your nearest Brother dealer or a qualified technician If the machine develops a problem contact your nearest Brother dealer or a qualified technician Cleaning Turn off the power switch before carrying out cleaning otherwise the machine may operate if the treadle is depressed by mistake which could result in injury Be sure to wear protective goggles and gloves when S handling the lubricating oil and grease so that they do not get into your eyes or onto your skin otherwise inflammation can result Furthermore do not drink the oil or eat the grea
35. outlet from the tube support 11 Remove the screw 12 and then remove the tube support 11 from the wick base support 6 Disconnect the oil tube 10 that is connected between the oil terminal and the oil outlet from the oil terminal 9 Disconnect the oil tube 13 that is connected between the oil terminal and the plunger pump from the oil terminal 9 9 Remove the oil pipe B 14 the oil cap 15 the packing 16 the collar 17 and the wick 18 from the oil terminal 9 ONOOaBRWNDY HE 800A 23 2 DISASSEMBLY 2 3 4 Needle zigzag mechanism 4082Q 4083Q 1 Remove the screw 1 and then remove the felt support assembly 2 from the motor bracket 3 2 Remove the screw 4 and then remove the tube support 5 2 3 5 Shaft bush mechanism 4084Q 4086Q 4085Q 1 Remove the screw 1 and then remove the tube support U 2 2 Remove the wicks 3 and 4 and then disconnect the oil tube 5 3 Remove the felt 6 and then remove the wick 7 from the bush F 8 4 Remove the felt 9 and then remove the wicks 10 and 11 from the bush F 8 5 Remove the felt 12 from the bush F 8 24 HE 800A 2 DISASSEMBLY 2 4 Thread breakage detection mechanism 4087Q 4088Q 11 12 a 13 4089Q 1 Remove the two screws 1 and then remove the two lever stoppers 2 2 Remove the screw 3 and then remove the balancer 4 fro
36. power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 3 2 Check that the slot at the bottom of the upper R thread trimmer lever set 1 is aligned with the edge of the washer 2 3 If they are not aligned loosen the bolt 3 and 4 move the longitudinal feed arm assembly 4 Van back and forth to adjust a 2 te X Aligned 4320Q 4 14 2 Adjusting the trimmer driving arm assembly position 4321Q 4322Q 1 Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 2 Check that the overlap between the stopper 2 fixed to the trimmer driving arm assembly 1 with the bolt and the stop plate 4 of the upper thread trimmer lever set 3 is 1 mm 3 If adjustment is necessary loosen the bolt 5 and move the trimmer driving arm assembly 1 back and forward to adjust 90 HE 800A 4 ADJUSTMENT 4 14 3 Adjusting the lateral position of the upper thread scissors at the sewing start 4323Q 4324Q 1 Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 2 Loosen the bolt 2 and then move the stopper 3 in and out to adjust so that the edge of the upper thread scissors assembly 1 protrudes by approximately 1 mm from the center of the cutter Note If the amount of protrusion of the upper thr
37. the bolt 18 and plain washer 19 and then remove the feed cover 20 from the feed arm support 10 7 Remove the two bolts 21 and spring washers 22 and then remove the length feed plate 23 from the feed arm support 10 8 Remove the four screws 24 and then remove the two feed presser plates 25 44 HE 800A 2 DISASSEMBLY 2 22 Lower thread trimmer mechanism 1 4160Q 1 A lA 2 O Ee a 3 4161Q 4162Q 1 Remove the shoulder screw 4 37 1 and then remove the knife driving lever 2 from the lower thread link assembly 3 2 Remove the four screws 4 and then remove the base plate 5 3 Remove the two flat screws 6 and then remove the needle plate 7 4 Remove the two screws 8 and then remove the fixed knife set 9 from the knife driving lever 2 5 Remove the shoulder screw 10 and the screw 11 and then remove the lower thread presser 12 from the base plate 5 6 Remove the shoulder screw 13 plain washer 14 washer 15 and then remove lower thread clamp plate assembly 16 from the base plate 5 7 Remove the shoulder screw 17 collar 18 washer U 19 and washer D 20 and then remove the knife driving lever 2 from the base plate 5 8 Remove the two screws 21 and then remove the lower thread retainer 22 from the lever assembly 23 9 Remove the screw 24 and collar 25 and then remove the lever assembly 23 from the base p
38. the cutter during cutting 4 13 Adjusting the cutter installation height _ lt 2 Lowest position A o y Lowest position Top of needle plate Top of needle plate 1 5 2 0mm 4309Q 4310Q Adjust so that the upper thread scissors and the cutter do not touch when the cutter is pushed down by hand Fig A gt Fig B in 4 12 Adjusting the cutter installation position Install the cutter with the screw 1 so that the tip A of the cutter blade is aligned with the top of the needle plate when the cutter is pressed down by hand to its lowest position If using the flat cutter 2 install with the screw 1 so that there is a clearance of 1 5 2 0 mm between the cutter and the top of the needle plate After adjusting push the upper thread scissors back to its original position Fig A in 4 12 Adjusting the cutter installation position 88 HE 800A 4 ADJUSTMENT 4 14 Adjusting the upper thread trimming Upper thread trimming adjustment procedure When the home position sensor When adjusting for the first time position has been changed When the longitudinal feed arm position has been changed When the trimmer driving arm position has been changed When the lateral position of the upper thread scissors has been changed When the longitudinal position of the upper thread scissors has been changed When the cutting depth of the upper thread scissors has been changed When the
39. the feed pulse motor goes out of step Operate the feed mechanism when the condition is as shown in figure A If it is pushed in the direction of arrow b at the condition shown in figure B the condition will change to that shown in figure A 4282Q HE 800A 79 4 ADJUSTMENT 4 2 Adjusting the needle zigzag home position sensor position 4283Q 4284Q i Needle moves to 1 the left Needle moves to the right Reference value Presser ONK Needle bar A bar aa A 18 52mm 4285Q 4286Q _ Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 2 If the needle is in the center of the needle plate hole the following adjustment is not necessary If the needle is not in the center of the needle plate hole turn off the power 3 Loosen the two screws 1 and then adjust the vertical position of the zigzag sensor plate 2 The adjustment required is only slight so move the zigzag sensor plate 2 a little bit at a time 4 Repeat the procedure from step 1 5 After adjusting check that the needle bar bracket 3 and the stopper screws 4 and 5 are not touching when in test feed mode If they are touching adjust the stopper screws 4 and 5 If the needle bar is at its furthest zigzag position place the stopper screws 4 and 5 against the needle bar bracket 3 and then turn them back about 1 4 of a turn T
40. the main P C board is properly connected 1 Turn off the power 2 Check that machine motor harness connector CN7 on the 1 step power supply circuit board is properly E 70 Machine motor running error connected 3 Check that the pins of machine motor harness connector CN7 are inserted correctly E 74 EEPROM error Turn off the power and replace the main P C board 1 Turn off the power 2 Check that there is data in the main circuit board ROM E 80 Communication ready error 3 Check that the ROM chips of the main P C board are properly connected Check position orientation lead clinching 1 Turn off the power 2 Check that there is data in the main circuit board ROM E 81 Communication error 3 Check that the ROM chips of the main P C board are properly connected Check position orientation lead clinching 1 Turn off the power 2 Turn the pulley by hand and check if the upper shaft locks or not E 90 Machine motor overload 3 Check that connectors P3 and P6 on the main P C Excessive load during sewing board are properly connected 4 Check that machine motor harness connector CN7 and power supply harness connector CN8 on the 1 step power supply circuit board are properly connected 150 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE Code Cause Remedy 1 Turn off the power 2 Turn the pulley by hand and check if the upper shaft locks or not E 92
41. tttrttttt 114 5 16 Needle strikes upper thread trimmer 114 5 17 Needle breakage ee ee eee ee ee ee ee 115 5 18 Imperfect cutter function imperfect material cutting eee eetere ereere 116 5 19 Cutter does not return str rttttttt tr trtt eee 117 5 20 Cutter and upper thread scissors touch ee ee ee ee ee ee ee ei 11 7 5 21 K Seam is cut ee ee ee ee 117 5 22 Upper thread mis winding tttttttt 118 5 23 Work clamp is not raised 1 Pulse motor stepping sound cannot be heard ee ee ee ee ee 11 8 5 24 Work clamp is not raised 2 Pulse motor stepping sound can be heard ee ee ee ee ee ee 11 9 5 25 Lower thread is not trimmed pulls when material is removed ee ee 120 5 26 Feed mechanism does not operate or motor is Out of step 51t ttt t ttt t ttt t teers 120 5 27 Needle does not zigzag or noise occurs when needle zigzags s ttttrtttttttttttee 121 5 28 Sewing machine stops during sewing 121 HE 800A 5 29 Upper shaft does not rotate as far as the needle up stop position ttrtrtrer eee eee 6 ELECTRIC COMPONENTS AND SOFTWARE 6 1 Precautions at the time of adjustment 6 2 Components inside the control box and the operation panel tttttte rete eter eee ees 6 3 Fuse explanation ttrt rttr terete teeters 6 4 Connectors eee ee ee ee 6 4 1 Connector positions 414 tt trette 6 4 2 Signal names for connectors and probable symptoms due to poor contact eee
42. used matches the specifications and application for the sewing machine being adjusted 5 Tighten the set screw 3 6 Install the rubber cap 2 7 Check that the cutter flank of the needle bar 1 is at a right angle to the cutter Note If the installation positions are not correct the needle bar 1 and the cutter may touch when the needle zigzags which may result in noise or cause the needle to break 4 6 Adjusting the needle and hook timing 3974Q Lowest position 2835Q 2168Q 2837Q 1 Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 2 Loosen the two screws 2 of the rotary hook joint 1 3 Turn the pulley in the regular direction of rotation toward the front so that the needle bar 3 just begins to rise from its lowest position 4 Insert the 2 part of the gauge 4 between the needle plate 5 and the lower edge of the needle bar 3 and then align the rotary hook point 6 with the center of the needle when the needle bar contacts the gauge Different gauges are used for each of the two specifications 2 and 3 so make sure that the gauge being used matches the specifications and application for the sewing machine being adjusted HE 800A 83 4 ADJUSTMENT Needle plate thickness Application Gauge 13595 001 Gauge 815 2 Clothin Lie 2 135 3 QQ Knitted 16 To wear 4294Q S1359
43. with the presser driving arm 3 so that the guide bracket 4 moves along the guide shaft 5 and moves the presser driving arm 3 in the direction of the arrow 2 The presser driving arm 3 causes the presser foot lifter connecting rod 6 to move in the direction of the arrow 3 The presser foot lifter connecting rod 6 is connected to the lower thread trimmer cam lever 7 so that the lower thread trimmer cam lever 7 moves 4 The roller 8 that is installed to the end of the lower thread trimmer cam lever 7 is linked to the cam groove in the lower thread trimmer cam 9 so that when the lower thread trimmer cam lever 7 operates the lower thread trimmer cam 9 moves with it and the movement is transmitted to the lower thread trimmer cam connecting rod 10 that is connected to the lower thread trimmer cam 9 16 HE 800A 1 MECHANICAL DESCRIPTIONS 17 10 4066Q 4067Q 5 The lower thread trimmer cam connecting rod 10 is connected to lower thread trimmer link A 11 so that the movement of the lower thread trimmer cam connecting rod 10 is transmitted via lower thread trimmer link A 11 and the lower thread trimmer connecting rod 12 to the knife driving lever 13 6 The collar 15 that is installed to the lever 14 is linked to the cam groove in the knife driving lever 13 so that when the knife driving lever 13 operates the lever 14 rotates
44. work clamp assembly to match the joint section Attach or remove rubber 5 3 Uneven seams 1 At the sewing start Cause Check Remedy Page Upper thread Installation height Adjust the upper thread scissors installation height Woon scissors Upper thread scissors Adjust to an appropriate opening timing 94 95 Opening TIMING aaah ues ncccocbseestucueusecseacsundecsesusucescsdccsuddeseseer ossassesseae Upper thread scissors Apply grease to the inclined face of the opening 94 operation cam Upper thread feeding Thread take up amount Loosen the screw to decrease thread take up amount so that upper thread does not pull out of scissors assembly at the sewing start Screw 101 4000Q 106 5 TROUBLESHOOTING Cause Check Remedy Page Lower thread bobbin Lower thread tension Adjust the lower thread tension appropriately Instruction oy a E E oe EMEA a LC e NTR E RONAN SINCE NSE RU ME AAE ANAA EREA ES ONES SX MMSE ERR SEU UCC manual __ Bobbin holder spring Add tension to the bobbin holder spring _ _ Add tension to the spring by the same amount that the bobbin tab is projecting i lt Make a gap 4001Q Lower thread retainer Adjust the lower thread retainer position position Adjust lower thread retainer so that a 35 40 mm thread leader is left after trimming 96 4002Q Bobbin presser position Adjust the bobbin presser position 98 Bobbin insertion Insert the bobbin correct
45. 0N B14B PHDS PHDR 26VS B26B PHDSS i j P14 AC18V ACISDIO 15 POWER PCB Ean J ACI8C h18 AC18 Vat aT ac3ov 847722 4 19 acsov __ illz 5 ACI8N et CN2 AC200V gt 6 ACI8N elo Lacy lair Power CN3 AC220V N as 7 Gl transformer CN4 AC230V CN8 7 i 9TACIsA 24 aS ACIN Earth ACIE IIT EARTH inductor fen O ee ee Ble hm 13 AC18B 28 ba ACIB Dco 2 ef POWER PCB 9 15 30 AC18F A zo Seen E 550425 O H 21 5 Latch SDLA P12 P7 P1 be OPVR PEDAL FAN2 ae a a I p i i A i Red i fo tt a iS a gas IER 4 coer ies Ra 400 eo ii 7 8 fafo jajo i i f B XHA JC B4B PHKS_ C B3B PHK S _ ae r j PHR 4 If io i EHEHE ior r if it i i tt B i vo 1 1 H i Fe E E an i PANS tt 1 1 1 Z i j DC fan OUT220V TT Rel 9 o Wee Ue Sis asaae i mie oo ool i j ji Conversion P ners 0 ET 1 La transformer az Treadle unit c 900 9 Ht Ve tn 43809 t Ste Power ly pl Greenen p _Lieenitelow esse J Machine motor Ower SUPP YERU ae IN380 400V HE 800A 153 Q SERVICE MANUAL BROTHER INDUSTRIES LTD http www brother com 15 1 Naeshiro cho Mizuho ku Nagoya 467 8561 Japan Phone 81 52 824
46. 18 and the lower thread clamp plate 18 rotates centering on the shoulder screw 30 so that the clamped lower thread is released by the lower thread presser 31 and the lower thread clamp plate 18 18 HE 800A 2 DISASSEMBLY A 2 DISASSEMBLY A CAUTION Disassembly should only be carried out by a qualified technician Turn off the power switch before disassembly otherwise the machine may operate if the treadle is depressed by mistake which could result in injury Be sure to wear protective goggles and gloves when handling the lubricating oil and grease so that they do not get into your eyes or onto your skin otherwise inflammation can result Furthermore do not drink the oil or eat the grease under any circumstances as they can cause vomiting and diarrhea Keep the oil out of the reach of children 2 1 Covers Use only the proper replacement parts as specified by Brother If any safety devices have been removed be absolutely sure to re install them to their original positions and check that they operate correctly before using the machine Any problems in machine operation which result from unauthorized modifications to the machine will not be covered by the warranty 4070Q 1 Remove the top cover 1 the belt cover 2 and the rear cover 3 2 Remove the eye guard assembly 4 the face plate 5 and the cover 6 HE 800A 19 2 DISASSEMBLY 2 2 Rotary hook mechani
47. 2 to retard the work clamp Instruction lifting speed manual HE 800A 113 5 TROUBLESHOOTING 5 15 Upper thread mis trimming Cause Check Remedy Page Upper thread trimmer Installation position of Adjust the installation position of upper thread assembly upper thread trimmer trimmer assembly by moving the setting plate assembly assembly Upper thread trimmer longitudinal position adjustment Upper thread trimmer cutting depth adjustment 91 92 Upper thread trimmer Adjust so that the thread does not come out when assembly holding force you cut it with scissors and hold the end of the thread between your fingers and gently swing the assembly Bend the scissors U or replace them so that the correct force is applied Repair any damage from striking the needle Cotton yarn 60 3 Holding force approx 2N 4006Q Trimmer driving arm Upper thread trimmer Adjust the position of the trimmer driving arm roller 92 cutting depth 5 16 Needle strikes upper thread trimmer Cause Check Remedy Page Upper thread trimmer Installation position of Adjust the installation position of upper thread assembly upper thread trimmer trimmer assembly by moving the setting plate assembly assembly Upper thread trimmer longitudinal position adjustment Upper thread trimmer cutting depth adjustment 91 92 upper thread trimmer Remove any scratches and burrs and adjust the ope
48. 24 5 mm Sewing area 6 0 x 20 0 mm ON OFF OFF Work clamp size 6 8 x 36 0 mm Sewing area 5 4 x 32 0 mm OFF ON ON Work clamp size 6 8 x 24 5 mm Sewing area 5 4 x 20 0 mm OFF ON OFF Panel DIP switches B No 7 and No 8 are enabled OFF OFF ON Work clamp size 5 4 x 19 0 mm Sewing area 4 0 x 15 0 mm OFF OFF OFF Panel DIP switches B No 7 and No 8 are enabled ON Needle plate size 5 4 mm Max needle zigzag feed width 4 0 mm 6 FF Needle plate size 7 3 mm R 3 4 5 OFF OFF OFF iad Max needle zigzag feed width 6 0 mm ON ON Work clamp size 7 3 x 47 0 mm Sewing area 6 0 x 40 0 mm 7 8 ON OFF Work clamp size 6 8 x 47 0 mm Sewing area 5 4 x 40 0 mm OFF OFF OFF ON Work clamp size 5 4 x 24 5 mm Sewing area 4 0 x 20 0 mm OFF OFF Work clamp size 5 4 x 36 0 mm Sewing area 4 0 x 32 0 mm If the programs are initialized when Nos 3 4 and 5 are set to OFF OFF and ON respectively the initial value for parameter No 02 Cutter size will be set to 6 0 mm Normal default value is 13 0 mm 140 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE 6 5 2 Circuit board DIP switches A DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury Always t
49. 338Q Feed arm ee Tf Approx 2mm Approx 1 0 1 5mm Zz Zzz7z724 Z N INSS LN ans D gt A Ez Peo 5 So Approx 1 0 1 5mm 4339Q J Center of the needle 5 5 6 0mm 4340Q 4341Q 1 Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 2 Loosen the two bolts 3 and then adjust the support plate 4 so that the back plate 1 and the cam 2 overlap by approximately 1 0 1 5 mm Note If the amount of overlap is too small the upper thread scissors will not open properly and the upper thread scissors and the cutter may touch each other 3 Loosen the two bolts 5 and then adjust the clearance between the bend in the back plate 1 and the cam 2 to approximately 2 mm If you would like the scissors to start opening earlier make this clearance smaller 4 Check that the distance A between the upper thread scissors 6 and the center of the needle is 5 5 6 mm 5 If the distance A is outside the range of 5 5 6 0 mm loosen the two screws 7 and move the dog 8 in the direction of the arrow slightly and then tighten the screws 7 6 Turn the power back on set the sewing machine to the home position and then press the RESET key to check the distance A 7 Check the operation in test feed mode Refer to the operating procedure given in 1 10 Upper thread trimmer mechani
50. 4348Q 4349Q Note After moving the lower thread trimmer cam lever 6 back in the direction of the arrow move the feed mechanism If the feed mechanism is moved when the lower thread trimming has been carried out the mechanisms will press against each other which may result in damage to the lower thread clamp 5 and the opening plate 4 HE 800A 97 4 ADJUSTMENT 4 15 4 Adjusting the lower thread clamp opening amount Loosen the two screws 6 and then adjust so that the distance between the lower thread clamp 4 and the lower thread presser 5 is approximately 5 mm when the feed guide shaft 1 is projecting out at the front and is firmly touching the roller 3 of opening plate 2 4350Q 4 16 Adjusting the bobbin presser 3989Q 4351Q 4352Q 1 Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 2 Loosen the set screw 1 and then adjust so that the bobbin presser 2 goes into the hole in the bobbin case 3 3 Check that the work clamp is at the home position and then loosen the nut 4 and turn the screw 5 to adjust the clearance A between the bobbin presser 2 and the edge of the bed to approximately 12 5 mm 4 Turn off the power move the lower thread trimmer cam lever 6 by hand in the direction of the arrow to check that the bobbin presser 2 presses the bobbin firmly before the lower thread reta
51. 5 24V e Error E 08 is displayed 6 OV 7 M55V for cutter power supply DC55V M55V for cutter power supply DC55V 9 MPOV 10 MPOV P3 PER Pin no Signal name Probable symptoms due to poor contact 1 Relay input signal e The feed home position and work clamp home position can not be found 2 OV e The feed mechanism and work clamp mechanism do not operate 3 nov ARa ompel sina e One of error E 06 and E 07 is displayed 4 55V OFF signal e 55 V power supply for driving the feed mechanism and work clamp PM control is not possible 5 ov e Error E 44 is displayed P4 ACIN Pin no Signal name Probable symptoms due to poor contact 1 ACIN Power supply input e The feed home position and work clamp home position can 2 ACIN Power supply input not be found 3 The feed mechanism and work clamp mechanism do not operate 4 EARTH One of error E 06 and E 07 is displayed HE 800A 137 6 ELECTRIC COMPONENTS AND SOFTWARE 5 Circuit board connectors Panel PCB P1 PANEL Pin no Signal name Probable symptoms due to poor contact 1 5V e The operation panel does not operate 2 OV 3 KEYO 4 KEY1 5 KEY2 6 OC 7 A 8 B 9 C 10 D 11 E 12 F 13 G 14 STB 15 P8V 16 SENSOR 17 BUZZER 18 OV 19 OV 20 OV 138 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE 6 5 Description of DIP switches 6 5 1 Panel DIP switches Always turn off the power supply
52. 6 001 Gauge 815 3 3 2mm Knitted 12 781 3 0 1 NN 3 16 278 4292Q 4295Q 13597 001 Gauge 805 2 LE 14 28 Thin knitted wear 16 781 2 5mm S 4293Q 4296Q 46 1 Adjusting the clearance between needle and hook point 0 01 0 08 mm Screw stop side 3 4 2839Q 2840Q Loosen the set screws 3 and move the rotary hook 4 forward or back until there is a clearance of 0 01 to 0 08 mm between the needle 1 and the hook point 2 When tightening the set screws 3 tighten the one on the screw stop side first 84 HE 800A 4 ADJUSTMENT 4 7 Adjusting the inner rotary hook and rotary hook holder overlap Loosen the two screws 3 to adjust so that the tip of the rotary hook holder 1 does not protrude past the edge A of the inner rotary hook 2 The standard distance A is 30 mm approximately 30 N Loosen the nut 1 and turn the adjusting screw 2 to adjust the work clamp pressure When the adjusting screw 2 is tightened as far as it will go the work clamp pressure will be about 70 N 4 9 Adjusting the work clamp lift amount 10mm 10mm 4297Q 4298Q 1 Turn on the power and set the sewing machine to the home position 2 Check that memory switch No 05 work clamp height at neutral position is set to 10 mm If it is not set to 10 mm set it to 10 mm 3 Place a 10 mm gauge under the work clamp 1 and then loosen the set screw 2 to make the adjustment Adjust the lif
53. 7 to release the tension discs 10 HE 800A 1 MECHANICAL DESCRIPTIONS Tack tension control 4057Q When the pulse motor 1 operates the gear 2 that is installed to the pulse motor shaft engages with the presser driving arm 3 so that the guide bracket 4 moves along the guide shaft 5 and moves the presser driving arm 3 in the direction of the arrow The presser driving arm 3 causes the presser foot lifter connecting rod 6 to move in the direction of the arrow The movement of the presser foot lifter connecting rod 6 is transmitted via the knee lifter lever 7 to move the upper thread trimmer driving link 8 in the direction of the arrow The needle roller 10 that is secured to the end of the tension release driving lever 9 is linked to the cam groove of the upper thread trimmer driving link 8 so that when the upper thread trimmer driving link 8 operates the tension release driving lever 9 that is secured to the tension release shaft 11 moves in the direction of the arrow The tension release cam 12 is secured to the end of the tension release shaft 11 and so the tension release cam 12 moves in the direction of the arrow When the tension release cam 12 presses against the tension release pin 13 the tension release pin 13 presses against the tension disc presser 14 to release the tension discs HE 800A 11 1 MECHANI
54. Be sure to connect the ground If the ground connec tion is not secure you run a high risk of receiving a serious electric shock and problems with correct operation may also occur S HE 800A All cords should be secured at least 25 mm away from any moving parts Furthermore do not excessively bend the cords or secure them too firmly with staples otherwise there is the danger that fire or electric shocks could occur Install the belt covers to the machine head and motor If using a work table which has casters the casters should be secured in such a way so that they cannot move Be sure to wear protective goggles and gloves when handling the lubricating oil and grease so that they do not get into your eyes or onto your skin otherwise inflammation can result Furthermore do not drink the oil or eat the grease under any circumstances as they can cause vomiting and diarrhoea Keep the oil out of the reach of children CAUTION Sewing This sewing machine should only be used by opera tors who have received the necessary training in safe use beforehand The sewing machine should not be used for any applications other than sewing Be sure to wear protective goggles when using the machine If goggles are not worn there is the danger that if a needle breaks parts of the broken needle may enter your eyes and injury may result Turn off the power switch at the following times otherwise the machine may
55. CAL DESCRIPTIONS 1 10 Upper thread trimmer mechanism Upper thread trimmer mechanism operating sequence The upper thread 7 scissors retract and the presser foot lifts 1 Sewing starts machine starts 8 The presser foot drops Presser foot drops lt S gt Presser foot lifts 2 After 1 5 2 5 mm of feed 2 the upper thread scissors gradually start to open 6 The upper thread is clamped and cut 4 3 ep 2 1 8 After approximately 4 6mm of feed the upper 4 The upper thread Sewing ends thread scissors are fully 12 HE 800A scissors move forward 4058Q 1 MECHANICAL DESCRIPTIONS 5 3 4059Q es When the pulse motor 1 operates the gear 2 that is installed to the pulse motor shaft engages with the presser driving arm 3 so that the guide bracket 4 moves along the guide shaft 5 and moves the presser driving arm 3 in the direction of the arrow The presser driving arm 3 causes the presser foot lifter connecting rod 6 to move in the direction of the arrow The movement of the presser foot lifter connecting rod 6 is transmitted via the knee lifter lever 7 to move the upper thread trimmer driving link 8 in the direction of the arrow The driving lever roller 13 and ball bearing 14 that are installed to the ends of the trimmer driving levers 9 and 10 by the sh
56. DESCRIPTIONS 1 8 Lubrication mechanism 4054Q 1 The plunger pump 2 that is attached to the lower shaft 1 draws oil up A through the pump filter 3 and sends the oil B to the oil terminal 4 where the wick lubricates the felt 5 2 The oil is transferred from the felt 5 by means of the wick to the following places 1 Oil is supplied to bush F 6 and it passes through the upper shaft 7 and thread take up crank 8 to the needle bar crank 9 Furthermore oil is supplied from bush F 6 to zigzag lever bush F 10 2 Oil is supplied from the needle bar bracket support shaft 11 to the needle bar 12 and from there it is supplied to parts such as the needle bar clamp 13 Oil is supplied from the support shaft 14 to the thread take up 15 Oil is supplied to bush M 16 Oil is supplied to zigzag lever bush R 17 Oil is supplied to the motor lever shaft 18 and from there it is supplied to the zigzag connecting rod shaft 19 Oil which splatters inside the arm is collected by the felt 20 and is supplied to the crank rod guide 21 and to the slide block 22 3 The oil which is sent to the oil terminal 4 is returned to the oil tank vi
57. HE 800A SERVICE MANUAL Electronic Excellent Economical arians dus Please read this manual before using the machine Please keep this manual within easy reach for quick reference ELECTRONIC LOCKSTITCH BUTTON HOLER This service manual is intended for HE 800A be sure to read the HE 800A instruction manual before this manual Carefully read the SAFETY INSTRUCTIONS below and the whole of this manual to understand this product before you start maintenance As a result of research and improvements regarding this product some details of this manual may not be the same as those for the product you purchased If you have any questions regarding this product please contact a Brother dealer SAFETY INSTRUCTIONS 1 Safety indications and their meanings This service manual and the indications and symbols that are used on the machine itself are provided in order to ensure safe operation of this machine and to prevent accidents and injury to yourself or other people The meanings of these indications and symbols are given below Indications A DANGER The instructions which follow this term indicate situations where failure to follow the instructions will almost certainly result in death or severe injury The instructions which follow this term indicate situations where failure to follow the A CAUTION instructions could cause injury when using the mach
58. LEDO E 2 SOV 12 LED1 F Thread breakage delection sensor K 0 D a KEY2 15 P8V 1 1 Green ellow 6 OC 16 Sensor input 1 Ai a a S E G p a A Z A 17 BUZZ 8 B Operation panel 18 SOV olc ag Sov 101 D 20 sov XG4A 2031 5 i XG4M 2030 T 1 o2 i 1 EO on 2 ie Se a ie Es se z2 R oR Tension release 59 XG4M 2030 T Solenoid oa XG4A 2031 1 sv Jmf LEDOE z LED1 F ayo Fe Leva Feed pulse motor 4 1 14 O Pet keve 8 Z A 17 BUZZ 8f B H otc 19 Sov P18 P4 7 E E a ra SOL PANEL 3191 06R Re 2tssv__ 18 Prs ta a l 5v_ 19 Pre Ol al ko 9 Presser foot lifter a 5v_ 20 PF7 imo 21 PEO 40V Presser foot lifter 6 24v 22 40V Thread trlmming 23 PE2 P12 FTPM FDPM FAN2 40V Thread wiper OPSEN2 40V Thread holding B32B PHDSS P9 OPSEN1 50479 S50431 sabe eialaee SLI etl Lbs R i RPNE HPRH ARH Eafe bx br OPSEN2 OPSEN2 115 Sov lesleolsholols alate loulea ta of feo oo ofloufeo 11 OPSEN3 16 Sov OPSEN4 17 24V OPSEN5 18 24V OPSENG 19 24V OPSEN OJ 24 8 OPSEN8 21 PD2 O N9 D 10 OPSEN10_ 23 PD4 OPSEN11_ 24 PDS OPSEN12_ 25 PD6 26 B10P VH VHR 1
59. Machine motor operation error 3 Check that connectors P3 and P6 on the main P C board are properly connected 4 Check that machine motor harness connector CN7 and power supply harness connector CN8 on the 1 step power supply circuit board are properly connected 1 Turn off the power E 93 Blown solenoid fuse 2 Check fuse F1 on the main P C board If it is blown replace it 1 Turn off the power 2 Turn the pulley by hand and check if the upper shaft locks or not E 94 Machine motor iC ewor 3 Check that connectors P3 and P6 on the main P C board are properly connected 4 Check that machine motor harness connector CN7 and power supply harness connector CN8 on the 1 step power supply circuit board are properly connected 1 Turn off the power 2 Check the power supply voltage in the workplace and the power supply voltage specifications for the control box E 95 Power supply voltage error high 3 Check the connection positions of connectors CN2 CN3 and CN4 on the 1 step power supply circuit board 200V specification CN2 100V 110V 220V 380V 400V specifications CN3 230V specification CN4 1 Turn off the power 2 Check the power supply voltage in the workplace and the power supply voltage specifications for the control box E 96 Power supply voltage error low 3 Check the connection positions of connectors CN2 CN3 and CN4 on the 1 step power supply circuit board 200V specification CN2 100V 110V
60. N3 and CN4 on the 1 step power supply circuit board are properly connected 1 Turn off the power and clean the exhaust cooling fan Remove dust E 42 Exhaust fan problem 2 Check that connectors P1 and P20 on the main P C board are properly connected 3 Check that connectors CN2 CN3 and CN4 on the 1 step power supply circuit board are properly connected 1 Turn off the power 2 Check that connector P3 on the sub P C board is properly connected 3 Check that connectors P3 and P4 on the 2 step power dase supply circuit board are properly connected E 44 Pee en ine circuit board 4 Check that connectors P10 and P13 on the sub P C y board are properly connected 5 Check that connectors P22 and P23 on the main P C board are properly connected This error can occur if a three phase sewing machine is used with a single phase power supply E 51 X pitch error Turn off the power and initialize the parameter settings E 52 Y pitch error Turn off the power and initialize the parameter settings Use the programming device the programming software E 53 Multi working knife error for the electronic pattern sewer or a programmer to delete multi working knife operations E 54 Overal cycle progran Such no emar Clear the cycle program to reset the error automatically Exceeds 3 000 stitches HE 800A 149 6 ELECTRIC COMPONENTS AND SOFTWARE Code Cause Remedy 1 Turn off the power and the
61. Remove the two O ring 18 and the two trimmer driving levers 19 9 Remove the spacer 20 washer D 21 and bolt 22 and then remove the knee lifter lever 23 from the presser lifter connecting rod assembly 24 38 HE 800A 2 DISASSEMBLY 2 17 Tension release mechanism 1 4136Q 4137Q SS SS SS 4138Q 4139Q Loosen the set screw 1 Remove the tension stud bracket assembly 2 and the tension release pin 3 Remove the shoulder screw 4 Remove the two screws 5 and then remove the tension release solenoid assembly 6 Remove the shoulder screw 7 and then remove the tension release link 8 Remove the bolt 9 and plain washer 10 and then remove the plate 11 plunger 12 and spring 13 Remove the plunger pin 14 and then remove the plunger 12 tension release rubber assembly 15 and the tension release solenoid link 16 8 Remove the two screws 17 and then remove the tension release solenoid 18 from the solenoid holder 19 NORWOOD HE 800A 39 2 DISASSEMBLY 2 18 Tension release mechanism 2 4140Q 4142Q 14 O 25 4143Q 37 4141Q 4144Q 1 Remove the shoulder screw 1 and then remove the tension release lever 2 and the spring 3 2 Remove the tension stud assembly 4 from the tension release lever bracket 5 3 Remove the tension nut 6 and then remove the spring 7 and washer 8 from the ten
62. SSEMBLY 2 13 Needle zigzag mechanism 4119Q 4120Q eee ly 0 Si 4121Q 4122Q 1 Remove the two screws 1 and then remove the zigzag sensor plate 2 from the motor bracket 3 2 Loosen the set screw 4 and then remove the motor lever shaft 5 the zigzag connecting rod 6 and the two washers 7 from the motor lever 8 3 Remove the screw 9 and then remover the sensor 10 from the zigzag sensor plate 2 4 Remove the bolt 11 and then remove the zigzag lever F assembly 12 and the thrust washer 13 5 Loosen the set screw 14 and then remove the zigzag connecting rod shaft 15 and the zigzag lever 16 HE 800A 35 2 DISASSEMBLY 2 14 Presser lifter mechanism 1 4123Q 4125Q 4126Q 4127Q oR WP OON OD Remove the two screws 1 and then remove the clamp sensor dog 2 from the upper thread trimmer driving link 3 Remove the screw 4 and then remove the clamp sensor 5 Remove the flat screw 6 and then remove the clamp sensor plate 7 Remove the two positioning pins 8 Remove the four screws 9 and the screw 10 and then remove the motor bracket assembly 11 from the top of the arm Loosen the set screw 12 and then remove the driving arm presser 13 and the washer 14 Remove the four bolts 15 and then remove the presser driving arm 16 from the guide bracket 17 Loosen the four set screws 18 and then remove th
63. a the oil return tube C 4 The oil which collects in the jaw of the arm is absorbed by the felt 23 and is drawn up by the plunger pump 2 through the tube D and it is then returned to the oil tank E by the plunger pump 2 3 4 5 6 eS a was wa 8 HE 800A 1 MECHANICAL DESCRIPTIONS 1 8 1 Lower shaft and rotary hook lubrication 4055Q 1 The oil which is drawn up by the wick 1 is supplied to the lower shaft 2 2 The oil which is drawn up by the wick 3 passes through the felt 4 and the rotary hook joint 5 to the felt 6 where it is supplied to the rotary hook 7 3 The oil that is supplied to the rotary hook 7 can be adjusted by turning the screw 8 to vary the amount by which the rubber presser 9 presses down on the collar 10 that the wick passes through HE 800A 9 1 MECHANICAL DESCRIPTIONS 1 9 Tension release mechanism Zigzag tension control 4056Q 1 When a thread tension ON signal is input the tension release solenoid 1 operates 2 The plunger 2 moves in the direction of the arrow and the movement is transmitted to the tension release solenoid link 3 that is connected to the plunger 2 3 The tension release link 4 that is connected to the tension release solenoid link 3 operates with the shoulder screw 5 as a pivot and presses against the tension release pin 6 4 The tension release pin 6 presses against the tension disc presser
64. ad trimmer mechanism will not operate the position where the presser foot lifter pulse motor is at the home position If this is not done the lower thread retainer and the feed guide shaft may alternately push against the lower thread clamp and the opening plate and damage may result e When pushing the knife down by hand be careful not to let it touch the upper thread scissors e Do not move the feed mechanism while the stop plate of the upper thread trimmer lever is pulled forward and the upper thread scissors are open the upper thread trimmer lever is pushed to the left Always return the stop plate to its original position before moving the feed mechanism or returning it to the home position 78 HE 800A 4 ADJUSTMENT Fig A Presser foot lifter pulse motor and feed pulse motor home position sewing start position Fig B When the stop plate 2 of the upper thread trimmer lever 1 is pulled forward from the position in figure A the upper thread trimmer assembly 3 moves in the direction of the arrow a and goes below the projection of the opening cam 4 Fig C Then when the feed mechanism is operated arrow c the upper thread trimmer assembly 3 is forced to go behind the opening cam 4 Depending on the case the rising section 6 of scissors M 5 goes into the hollow shown in the figure and the feed mechanism cannot then operate At this time when feed mechanism home positioning is carried out
65. al 6 Start PRSW signal T Spare HPEDAL signal P10 HEAD Pin no Signal name Probable symptoms due to poor contact 1 Stop NC signal e The stop switch is not activated 2 OV e The thread breakage detection does not operate normally 3 Stop NO signal 4 24V 5 6 OV 7 5V 8 Thread breakage detection signal 9 z 10 P8V 8V 11 OV 128 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE P11 ORG Pin no Signal name Probable symptoms due to poor contact 1 24V e The home position can not be found 2 Zigzag home position signal e One of error E 05 E 06 and E 07 is displayed 3 OV 4 5V 5 24V 6 Feed home position signal 7 OV 8 5V 9 24V 10 Work clamp home position signal 11 OV 12 5V P13 FAN12 Pin no Signal name Probable symptoms due to poor contact 1 24V e The exhaust fan does not operate 2 FAN1 signal e Error E 42 is displayed 3 OV P14 AC18V Pin no Signal name Probable symptoms due to poor contact 1 AC18V D10V input e The zigzag home position can not be found 2 AC18V D10V input e The zigzag mechanism does not operate 3 e Error E 05 is displayed 4 z 5 AC18V N input 6 AC18V N input 7 8 7 9 AC18V A input 10 AC18V A input 11 12 13 AC18V B input 14 AC18V B input 15 16 17 AC18V C input 18 AC18V C input 19
66. amount to 0 5 1 0 mm by removing the top cover and moving the tension release cam mE 100 rB j Zigzag tension Tack tension IB 1mm 4008Q HE 800A 111 5 TROUBLESHOOTING Cause Check Remedy Page Upper thread feeding Thread take up amount Loosen the screw to decrease thread take up amount so that upper thread does not pull out of scissors assembly at the sewing start Screw 101 4000Q Rotary hook Needle bar height and Adjust the needle and hook timing needle bar lift amount 1 Adjust the needle bar height to 1 on the gauge 83 2 Adjust the needle bar lift amount to 2 on the Bie chad E dade stelle DOE sth mdai neoaea cece memeeatacet cet cose EESE EEN Thread chips on rotary Remove thread chips N hook edge Machine stopping Upper shaft pulley Adjust the needle up sensor position 103 position stopping position Lower thread Lower thread retaining Adjust the lower thread retaining amount amount 96 4003Q Lower thread snapping Use memory switch No 02 to retard the work clamp lifting speed nsrucion Process the lower thread retainer lower thread maria clamp and lower thread presser plate so that they Basi AE coc cee Iie ath lt od do not snap the lower thread l toda eet ee cca Lower thread clamp Adjust so that the lower thread clamp plate opens 97 opening timing when the feed mechanism moves 6 7 mm Sewing start speed Slow speed Use parameter number 60 to red
67. and cutter solenoid 1 step power supply circuit board 2 step power supply circuit board These are secured to the bases of the first and second levels of the control box and they generate the voltages which are necessary for the various control operations Panel PCB The panel PCB is fixed to the front panel of the operation panel This PCB controls indications of the machine status and the input operation DC fan motor The DC fan motor serves as a fan to cool the inside of the control box Clean the inlet filter monthly Transformer This is secured to the base of the second level of the control box and it generate the voltages which are necessary for the various control operations 4368Q Sub circuit board rear Paint circulation Fan 2 ventilation Aa PP aan 2 step power supply circuit board Transformer _ 1 step power supply circuit board Air inlet Main circuit board Panel PCB Operation panel HE 800A 123 6 ELECTRIC COMPONENTS AND SOFTWARE 6 3 Fuse explanation When replacing a fuse be sure to use the specified ones listed below If a component on a PCB is damaged a fuse may blow again immediately even when it has been replaced F2 may also blow as a result of a malfunction of the peripheral electronic component FET Main circuit board No Part name Part code When a fuse has blown Voltage PR EPA The tension release solenoid
68. and then remove the presser roller bracket 10 from the presser bar 11 Loosen the set screw 12 Remove the presser bar 11 and then remove the oil rejector 13 and the presser bar guide bracket assembly 7 Remove the two rubber caps 14 Remove the two screws 15 and then remove the needle bar guide 16 Loosen the set screw 17 and then remove the roller shaft 18 from the presser roller bracket 10 0 Remove the plain washer 19 and the retaining ring 20 and then remove the roller 21 from the roller shaft 18 11 Remove the shoulder screw 22 and then remove the presser bar lifter link 23 from the presser bar guide bracket 24 N O 0 ON 28 HE 800A 2 DISASSEMBLY 2 7 Needle bar and thread take up mechanism 1 4101Q 2 1 4102Q 4103Q OONDABRWDND Remove the set screw 1 and the nut 2 from the arm Remove the two screws 3 and then remove the stopper 4 from the arm Remove the set screw 5 and the nut 6 from the stopper 4 Remove the set screw 7 and then remove the needle bar thread guide 8 from the needle bar 9 Loosen the set screw 10 and then remove the needle bar thread guide 11 Loosen the set screw 12 and then remove the needle bar bracket support shaft 13 Remove the wick 14 Remove the needle bar bracket assembly 15 from the arm Remove the slide block 17 of the needle bar clamp
69. are properly connected 1 Turn off the power and check if the zigzag mechanism E 21 Zigzag motor overcurrent Moves Smocihly 2 Check that connector P16 on the main P C board is properly connected 1 Return the treadle to the neutral position E 30 Treadle is depressed to step 2 2 If an error still occurs after 1 is carried out check that i connector P7 on the main P C board is properly connected 1 Return the treadle to the neutral position 2 If the error still occurs after step 1 is carried out adjust f the threshold value for memory switch No 08 to a E 31 Treadle is depressed to step 1 positive value 3 Check that connector P7 on the main P C board is properly connected 1 Return the treadle to the neutral position 2 If the error still occurs after step 1 is carried out adjust the threshold value for memory switch No O7 to a E 32 Treadle is depressed backward negative value 3 Check that connector P7 on the main P C board is properly connected 1 Turn off the power and check that the inside of the E 40 Control circuit board heat sink is control box is being properly ventilated overheating 2 Clean the filter of the air intake and the cooling fan Remove dust 1 Turn off the power and clean the inside air circulation cooling fan Remove dust E 41 Inside air circulation fan problem 2 Check that connectors P13 and P20 on the main P C board are properly connected 3 Check that connectors CN2 C
70. ary sheet 7 as shown in the illustration HE 800A 93 4 ADJUSTMENT 4 14 7 Adjusting the upper thread scissors gradual opening timing 4334Q Start touching at 1 5 2 5mm Approx 0 5mm Approx 0 5mm _ 4335Q 4336Q Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp Loosen the two bolts 3 and then adjust so that the distance a between ridge line A on the opening cam 1 and the upper thread scissors 2 is 0 5 mm and so that ridge line A on the opening cam is parallel to the feed direction Loosen the two screws 4 and then adjust so that the distance b between the rising section B of the upper thread scissors 2 and the tip of the opening cam 1 is approximately 0 5 mm when the upper thread scissors 2 are closed If you would like the scissors to start opening earlier make the distance smaller However if you make the distance smaller check that the rising section B of the upper thread scissors 2 does not touch the opening cam 1 and prevent the upper thread scissors 2 from opening when the work clamp is lowered 4 Apply grease to the inclined face C of the opening cam 1 5 Check that the upper thread scissors 2 gradually start opening after the material has been fed by 1 5 2 5 mm 94 HE 800A 4 ADJUSTMENT 4 14 8 Adjusting the upper thread scissors opening timing 4387Q Approx 2mm 4
71. ase 7 Install the auxiliary plate 8 and the opening plate 9 with the shoulder screw 10 Install the bobbin presser bracket 2 and the auxiliary plate 8 to the bed with the shoulder screw 11 Install the opening plate 9 to the rotary hook cover 13 with the shoulder screw 12 Attach the two extension springs 14 Turn on the power and after the sewing machine returns to the home position turn the screw 3 and the nut 4 to adjust so that the clearance between the bobbin presser 5 and the edge of the bed is approximately 12 5 mm 54 HE 800A 3 ASSEMBLY 3 7 Tension release mechanism 1 4201Q Apply grease to 16 Apply grease to 13 13 eee l o 12 o i 19 2 0 2mm fen Figure C 4205Q 4206Q 4203Q Install the tension release solenoid 1 to the solenoid holder 3 with the two screws 2 2 Pass the tension release solenoid link 4 through the tension release rubber assembly 5 and the plate 6 as shown in the illustration and then install it to the plunger 8 with the plunger pin 7 3 Install the spring 9 to the plunger 8 4 Insert the plunger 8 into the tension release solenoid 1 and then install the plate 6 to the solenoid holder 3 with the bolt 10 and the washer 11 so that the dimension A is 13 7 mm 5 Insert the tension release link 12 into the arm from the face plate side and install it with the shoulder screw 13
72. before changing any of the DIP switch settings Any changes to the DIP switch positions will not be effective until the power is switched off and back on again Note Move the switches properly DIP switch A No ON OFF Setting items Default ON Work clamp remains lowered after sewing is complete rises when treadle is 1 depressed backward OFF OFF Work clamp rises after sewing is complete ON 2 OFF E OFF ON Pausing enabled during automatic sewing when the treadle is depressed 3 backward OFF OFF Pausing disabled during automatic sewing when the treadle is depressed backward 4 ON Display setting during automatic mode bobbin thread counter Default 100 OFF OFF Display setting during automatic mode production counter Default 0 ON 2 cycle sewing ON All programs will be set to 2 cycle sewing regardless of 5 the setting for parameter No 55 OFF OFF 2 cycle sewing OFF ON 6 OFF OFF 7 ON Upper thread breakage detection disabled OFF OFF Upper thread breakage detection enabled 8 ON Programs disabled OFF OFF Programs enabled HE 800A 139 6 ELECTRIC COMPONENTS AND SOFTWARE DIP switch B No ON OFF Setting items Default ON 1 OFF i OFF ON 2 a OFF OFF ON ON ON Panel DIP switches B No 7 and No 8 are enabled ON ON OFF Work clamp size 7 3 x 36 0 mm Sewing area 6 0 x 32 0 mm ON OFF ON Work clamp size 7 3 x
73. can not be found 100 110 220 380 400V specifications e The zigzag mechanism does not operate 2 e Error E 05 is displayed AC220 T e The tension release solenoid does not operate 100 110 220 380 400V specifications 4 CN4 Pin no Signal name Probable symptoms due to poor contact 1 AC230 240 R 230V specifications e The zigzag home position can not be found 2 e The zigzag mechanism does not operate 3 e Error E 05 is displayed 4 AC230 240 T 230V specifications e The tension release solenoid does not operate CN5 Pin no Signal name Probable symptoms due to poor contact 1 DC300V e The zigzag home position can not be found e The zigzag mechanism does not operate 2 DCOV e Error E 05 is displayed CN6 Pin no Signal name Probable symptoms due to poor contact 1 Resistance e Voltage error occurs e Error E 95 is displayed 2 Resistance 136 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE 4 Circuit board connectors 2 step power supply circuit board P1 POWER Pin no Signal name Probable symptoms due to poor contact 1 55V for PM power supply DC55V 55V for PM power supply e The work clamp home position and feed home position can not be found e The work clamp mechanism and feed mechanism do not 2 DC55V operate 3 POV e One of error E 06 and E 07 is displayed 4 POV e Cutter does not operate
74. ck 1 through the collar 2 as shown in the illustration 2 Place the collar 2 onto the bush 3 as far as the base of the hollow 3 Insert the spring 4 into the bush 3 and then insert the wick 1 as shown in the illustration At this time check that the spring 4 is not compressed when the wick 1 is pulled in the direction of the arrow 4 Push the end of the felt 5 into the hole in the bush 3 and stop it from turning 5 Install the felt support 6 to the bed with the two screws 7 6 Pass the wick 1 through the felt support 6 and then tie a Knot in it 7 Pass the wick 8 through the felt support 6 and then tie a knot in it 8 Insert the rubber presser 9 into the bed and then secure it with the spring 10 and the screw 11 As a guide for the lubrication amount the optimum position can be obtained if the screw 11 is tightened as much as possible and then loosened about two turns Refer to 4 23 Adjusting the rotary hook lubrication to check and adjust the lubrication amount 76 HE 800A 3 ASSEMBLY 3 23 Rotary hook mechanism Screw stop side gt 6 1 Install the rotary hook joint assembly 1 to the lower shaft and then tighten the two set screws 2 2 Tighten the set screw 4 so that the oil inlets A in the rotary hook 3 and the rotary hook joint assembly 1 are aligned 3 Adjust the needle clearance and timing Refer to 4 6 Adjusting the needle and rotary hook timing
75. cnad Gap between needle and Adjust the gap between needle and rotary hook to rotary hook 0 01 0 08 mm Adjust to as large as possible without causing skipped stitches to occur 84 Check that rotary hook point does not strike needle in zigzag motion HE 800A 105 5 TROUBLESHOOTING Cause Check Remedy Page Thread tension Zigzag thread upper Adjust the upper thread tension appropriately Instruction thread tension manual Needle bar plate Vertical and longitudinal Reduce the needle bar play or replace the parts needle bar play Lower thread clamp Lower thread retainer Lower thread retainer cam should be sitting firmly on cam lower thread clamp plate roller Cam Roller 96 1 2mm 3998Q Thread scraps and dust Clean around the lower thread presser blocking area around 7 lower thread clamp and BOWE NNSA OG dade cee eect ahah came Renee aan Lower thread clamping If the lower thread clamp and lower thread presser force are bent replace them Check that the screws are tightened Lower thread clamp 3999Q Needle plate Relation between material When using knit material replace with the 3 and needle plate needle plate Replace with a needle plate with a smaller needle hole Joint sewing Angle of work clamp Replace with short work clamp that matches the means that material is not sewing length being clamped Use the accessory auxiliary sheet 93 Process the
76. d then on again 4378Q Check code Function C 01 The buzzer sounds for one second and then the operation panel indicators and LEDs all light After this numbers from 0 to 9 are displayed in the two program No LED columns and the four parameter display LED columns C 02 The buzzer sounds for one second and then the sewing machine motor starts running at 700 rpm While the motor is running a timing signal input check is carried out If there is an abnormality in the timing signal E 64 is displayed C 03 The buzzer sounds for one second and then the work clamp motor starts operating sensor home position 13 mm At this time the upper thread trimmer and lower thread trimmer operate together with the work clamp C 04 The buzzer sounds for one second and then the needle zigzag motor starts operating 3 mm 3 mm C 05 The buzzer sounds for one second and then the feed motor starts operating 1 mm 40 mm C 06 The buzzer sounds for one second and then the feed mechanism operates for 15 mm then moves to the home position then the cutter solenoid turns on and off then the cutter return solenoid turns on and off C 07 The buzzer sounds for one second and then the tension release solenoid turns on and off C 08 The buzzer sounds for one second and then the work clamp moves to the upper thread trimming position position 6 for the operation procedu
77. de shaft B 1 to the bed Install the two ball bearing stoppers 3 with the two screws 4 Place the linear bush 5 onto the feed arm support 6 and install it with the two retaining rings 7 Pass the feed arm support 6 through the feed guide shaft A 8 and install it provisionally to the bed with the two bolts 9 5 Pass the feed guide shaft B 1 through the feed arm support 6 and align it with the reference lines A and then tighten the set screw 10 6 Tighten the two bolts 9 so that the feed arm support 6 moves smoothly 7 Install the two ball bearings 11 to the bed 8 Place the timing belt 12 onto the pulley B assembly 13 and then insert the support shaft 14 9 Install the pulley B assembly 13 to the support shaft 14 with the two set screws 15 10 Install the motor mounting bracket 16 to the feed pulse motor 18 with the four bolts 17 11 Install the pulley A assembly 19 so that there is a gap of 0 5 mm between it and the motor with the two set screws 20 12 Place the timing belt 12 onto the feed pulse motor 18 and then provisionally tighten it with the three screws 21 and plain washers 22 13 Push the motor mounting bracket 16 in the direction of the arrow with a force of 100 N and then tighten the three screws 21 14 Gently tighten the bolt 23 and the nut 24 If there is no tension gauge available apply a force of 5 N at the middle of the timing belt 12 span
78. ded by feed guide shaft A 6 and feed guide shaft B 7 3 The feed arm 8 is connected to the feed arm support 5 and it moves the work clamp 9 that is installed to the feed arm 8 and the length feed plate 10 that is installed to the feed arm support 5 back and forth HE 800A 5 1 MECHANICAL DESCRIPTIONS 16 Cutter mechanism 4052Q 1 When a cutter ON signal is input the cutter solenoid 1 operates 2 A cutter link bracket 2 is secured to the end of the plunger and it turns the cutter driving arm 4 via the cutter driving link 3 3 The cutter driving kink 5 that is secured to the end of the cutter driving arm 4 is moved up and down 4 The driving shaft holder assembly 6 is linked to the cutter driving link 5 and this causes the cutter driving shaft 7 that is connected to the driving shaft holder assembly 6 to move up and down 6 HE 800A 1 MECHANICAL DESCRIPTIONS 1 7 Thread breakage detection mechanism wur 4053Q 1 The cutter bar fixed plate assembly 1 and the thread guide 2 are secure to the thread breakage perceiving shaft 3 When a thread breakage occurs the cutter bar fixed plate assembly 1 drop by its own weight and moves the thread guide 2 in the direction of the arrow 2 When the sensor 4 detects the cutter bar fixed plate assembly 1 the sewing machine stops and the cutter is prevented from dropping HE 800A 7 1 MECHANICAL
79. does not F1 glass tube fuse S47680 000 operate 40V 8A 250V f GFUSE8A250VFB F2 glass tube fuse S47717 000 The zigzag motor does not operate DC300V 8A 250V FB 1 step power supply circuit board No Part name Part code When a fuse has blown Voltage The zigzag motor does not operate F1 Fuse 15A 2 The tension release solenoid does not F2 glass tube fuse 218469 001 operate AC200V 15A 250V The operation panel does not operate The control box fan does not operate The feed motor and presser foot motor do F3 Ruse neo not operate glass tube fuse J02727 001 pera Eo DC300V F4 The cutter solenoid does not operate 2A 250V The operation panel does not operate 2 step power supply circuit board No Part name Part code When a fuse has blown Voltage G fuse 5AFB F1 auie MEIN AYP 398039099 The feed motor and presser foot motor do TOON 5A 250V Fuse 6A not operate dass tubes Rise 153242 000 The cutter solenoid does not operate AC200V 6A 250V Main circuit board 1 step power supply 2 step power supply circuit board circuit board m7 PEs F F2 F1 VO Oo Ou r l ESEA EA CJ 4369Q 124 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE 6 4 Connectors Most of the machine trouble is due to connector problems including improper connection or sufficient contact Therefore be sure to check if each connector is correctly inser
80. down detection function and is adjusted to match the feed timing so it should not be loosened If the index mark 2 is not inside the mark 4 when the sewing machine is started and error code E 02 will be displayed Turn the machine pulley to move the index mark 2 to the correct position and then start the sewing machine 1 Remove the three screws and then remove the belt cover 2 Turn the two nuts 2 to adjust so that there is 10 14 mm of deflection in the V belt 1 when it is pressed at the midway point with a force of 5 N Note If the V belt tension is too loose or if the V belt is stretched the following problems could occur a The stopping position may shift b The needle bar may drift when the machine stops c An extra stitch may be sewing when the machine stops d An abnormal noise may be heard due to V belt slipping and e The V belt may become too loose and contact with the cover If any such problems occur adjust by following the procedure described above 103 5 TROUBLESHOOTING 5 TROUBLESHOOTING CAUTION Turn off the power switch and disconnect the power cord before carrying out troubleshooting otherwise the machine may operate if the treadle is depressed by mistake which could result in injury 5 1 Upper thread breakage Cause Check Remedy Page Needle Needle facing As viewed from the direction of the face plate attach PENTET needle so that
81. e A 4061Q 1 An opening cam 3 is attached to the opening cam bracket 2 that is secured to the feed arm 1 Figure A After sewing starts the feed arm 1 moves in the direction of the arrow forward 2 When upper thread trimmer M 4 touches against the ridge line on the opening cam 3 the upper thread trimmer gradually starts to open Figure B At this time section D of the opening cam 3 fits into the upper thread trimmer assembly 5 so that the upper thread trimmer assembly 5 cannot move in the direction of arrow C 14 HE 800A 1 MECHANICAL DESCRIPTIONS 4064Q 3 Then when the feed mechanism moves forward the cam 6 that is secured to the feed arm 1 moves in the direction of the arrow forward and moves the back plate 7 in the direction of the arrow forward 4 When the back plate 7 and the stop plate 8 lock together and clamp the upper thread trimmer lever 9 and the stop plate 8 separates from the back stopper 10 the upper thread trimmer lever 9 is pulled in the direction of arrow E by the spring 11 and the upper thread trimmer assembly 5 changes from the condition in Figure F to the one in Figure G and the upper thread trimmer opens fully HE 800A 15 1 MECHANICAL DESCRIPTIONS 1 11 Lower thread trimmer mechanism CN 10 7 4065Q When the pulse motor 1 operates the gear 2 that is installed to the pulse motor shaft engages
82. e feed home position sensor monitor lamp Turn off the power lt If E 07 occurs other than when machine is moving to the home position or starting gt 1 Check that connector P11 on the main P C board is properly connected 2 Check the operation of the work clamp home position sensor monitor lamp lt If E 07 occurs when machine is starting gt 1 Check the upper thread trimming mechanism particularly for wear in the opening cam Apply grease to the inclined face of the opening cam Turn off the power Check if the solenoid stopper tightening nut or the cutter sensor mounting screw is loose and if the cutter solenoid shaft etc is damaged E 08 Cutter home position sensor is off 3 Check that connector P23 on the main P C board and connector P13 on the sub P C board are properly connected 4 Check the operation of the cutter home position sensor monitor lamp E 05 Zigzag positioning is not carried out Oo N gt Work clamp positioning is not carried E 07 out NN 148 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE Code Cause Remedy 1 Turn off the power and check that the feed mechanism is normal and that the work clamp moves smoothly 2 Check that connectors P2 and P5 on the sub P C board E 20 aids Work glamp moge are properly connected 3 Check that connector P22 on the main P C board and connector P10 on the sub P C board
83. e two guide shafts 19 and the guide bracket 17 Remove the bolt 20 and then remove the bearing holder 21 0 Remove the two linear ball bearings 22 from the guide bracket 17 36 HE 800A 2 DISASSEMBLY 2 15 Presser lifter mechanism 2 4129Q 4130Q 1 Remove the three bolts 1 and the four bolts 2 and then remove the pulse motor FT for presser lifter 3 and the pulse motor N assembly for needle zigzag 4 from the motor bracket 5 2 Remove the two set screws 6 and then remove the gear 7 from the pulse motor FT for presser lifter 3 3 Remove the two set screws 8 and then remove the motor lever 9 from the pulse motor N assembly for needle zigzag 4 HE 800A 37 2 DISASSEMBLY 2 16 Presser lifter mechanism 3 4131Q 4132Q 16 4134Q 4135Q 1 Loosen the set screw 1 and then remove the lifter shaft A 2 2 Remove the two shoulder screws 3 and then remove the ball bearing 4 and the driving lever roller 5 3 Remove the set screw 6 4 Remove the lifter shaft 7 plain washer 8 and retaining ring 9 5 Loosen the two set screws 10 6 Remove the retaining ring 11 and then remove the tension release shaft 12 tension release cam 13 and tension release driving lever 14 7 Remove the shoulder screw 15 and then remove the presser lifter connecting rod set 16 and the lifter lever assembly 17 8
84. ead scissors assembly is too great the scissors may touch the needle when they open 3 After adjusting carry out 4 14 8 Adjusting the upper thread scissors opening timing 4 14 4 Adjusting the longitudinal position of the upper thread scissors 4325Q 3 La Aligned 2 4326Q 1 Turn off the power with the feed mechanism at the home position and then slowly move the trimmer driving arm 1 forward until the upper thread scissors assembly 2 is at the position shown in the illustration 2 Loosen the two screws 3 and then move the upper thread scissors assembly 2 back and forward to adjust so that the front ridge line of upper thread scissors U 4 is aligned with the edge of the needle hole Note If this adjustment is not carried out it may result in thread trimming errors or needle breakages HE 800A 91 4 ADJUSTMENT 4 14 5 Adjusting the cutting depth of the upper thread scissors 4325Q 4328Q 1 o amp Power Oo 1 CAUTION ol a EE o h MANUAL Ta OAE EAL PROGRAM NO 4327Q 4329Q 4330Q 1 Turn off the power with the feed mechanism at the home position and then slowly move the trimmer driving arm 1 forward until the driving arm roller 3 is at its highest position on the cam A of the upper thread trimmer lever 2 Upper thread trimming position Using the output check code function can help with making this adjustment
85. echanisM s tr terete 72 3 22 2 Needle zigzag mechanism 73 3 22 3 Oil terminal mechanism 1st ttt t tte 74 3 22 4 Plunger pump mechanism 75 3 22 5 Rotary hook lubrication mechanism 76 3 23 Rotary hook mechanism ssstrrttttteee 77 3 24 Covers ee ee ee ee ee ee ee ee 77 4 ADJUSTMENT ee ee ee ee ee ee 78 4 1 Notes on making adjustments s srrtrrees 78 4 2 Adjusting the needle zigzag home position sensor Position rtts tees eee 80 4 3 Adjusting the feed home position sensor POSition s ttt reteset ee eee 81 4 4 Adjusting the work clamp home position sensor POSition s tttt tees eee eee 82 4 5 Adjusting the needle bar height 83 4 6 Adjusting the needle and hook timing te 83 4 6 1 Adjusting the clearance between needle and hook point ee ee ee ee ee ee 84 4 7 Adjusting the inner rotary hook and rotary hook holder overlap ee ee ee ee ee ee 85 4 8 Adjusting the work clamp pressure gt 85 4 9 Adjusting the work clamp lift amount 85 4 10 Adjusting the work clamp lateral position 86 4 11 Adjusting the cutter home position sensor ees 0 cee 86 4 12 Adjusting the cutter installation position 87 4 12 1 When using the special needle plate needle plate RB stttrrrretet tees 88 4 13 Adjusting the cutter installation height 88 4 14 Adjusting the upper thread trimming
86. ee ee 20 2 3 Lubrication mechanism 1 s ttttttttttttee 21 2 3 1 Rotary hook lubricating mechanism 21 2 3 2 Plunger pump mechanism s tt 22 2 3 3 Oil terminal mechanism t ttt ttre 23 2 3 4 Needle zigzag mechanism ttt ttt 24 2 3 5 Shaft bush mechanism tsttst ttre 24 2 4 Thread breakage detection mechanism 25 2 5 Upper thread trimmer mechanism tettette 26 2 6 Presser bar mechanism t trttttttstsreee 28 2 7 Needle bar and thread take up mechanism 1 tttttttrrretttttt eee 29 2 8 Needle bar and thread take up mechanism 2 rttttttrrrtttttt teens 30 2 9 Lubrication mechanism 2 tttttttttttrtee 31 2 9 1 Oil tubes ee ee ee ee ee 31 2 10 Upper shaft and tension pulley mechanisms ee ee ee ee ee ee 32 2 11 Cutter mechanism 1 eee ee ee ee 33 2 12 Cutter mechanism 2 ee ee ee ee eee 34 2 13 Needle zigzag mechanism 1725 tee 35 2 14 Presser lifter mechanism 1 s ttttttttttt 36 2 15 Presser lifter mechanism 2 ttree 37 2 16 Presser lifter mechanism 3 ttttree 38 2 17 Tension release mechanism 1 39 2 18 Tension release mechanism 2 00 40 2 19 Bobbin presser mechanism e0 41 2 20 i Feed mechanism 1 ee ee ee 42 2 21 Feed mechanism 2 ee ee ee 44 2 22 Lower thread trimmer mechanism 1 45 2 23 Lower thread trimmer mechanism 2
87. elt 2 and the driving shaft holder assembly 3 Pass the cutter driving shaft 1 through the oil rejector 4 Provisionally secure the driving shaft holder assembly 3 with the two set screws 5 Fully tighten the two set screws 5 so that the edges of the cutter driving shaft 1 and the bush 8 are aligned when the clearance between the edges of the cutter link bracket assembly 6 and the cutter solenoid 7 is 1 5 mm or when dimension A is 15 5 mm Install the adjusting screw assembly 9 to the arm and secure it with the nut 10 so that the stepped section of the cutter driving shaft 1 protrudes by 5 mm from the processed surface of the arm jaw Attach the spring 11 to the cutter driving arm assembly 12 and the tension release shaft 13 Install the cutter sensor assembly 14 with the screw 16 so that the clearance between the cutter sensor assembly 14 and the solenoid stopper 15 is 4 5 mm At this time be careful not to clamp the wick 17 62 HE 800A 3 ASSEMBLY 4232Q 4233Q 24 24 gt as 23 Top of needle 24 plate Lowest position tl AS Top of needle plate 1 5 2 0mm Lowest position 4234Q 4235Q 8 Provisionally install the cutter holder 18 to the cutter driving shaft 1 with the bolt 19 9 Provisionally install the cutter holder M 20 to the cutter holder 18 with the two bolts 21 10 Provisionally install the cutter
88. er is turned off To prevent electric shock wait at least 5 minutes after the power is turned off before doing the following Opening and closing the control box e Replacing fuses e Separating and joining connectors e Measuring resistance e Doing anything with a possibility of touching something inside the control box Some adjustments require measuring the voltage while the power is turned on with the control box kept open In such a case be careful not to touch any place other than that for the measurement In addition always keep in mind that a high voltage remains for about 5 minutes after power is turned off Injury While the power is turned on the cooling fan of the control box operates be careful not to get caught in it When separating or rejoining connectors and measuring something be careful not to cut your fingers on metal parts such as heat sinks and covers 122 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE 6 2 Components inside the control box and the operation panel The following are brief explanations of components inside the control box See control circuit block diagram at the end of this manual for the details of the connections Main circuit board This circuit board is secured to the front cover main PCB setting plate and it control the pulse motors and solenoids Sub circuit board This circuit board is secured to the rear cover sub PCB setting plate and it drives the work clamp feed pulse motor
89. er thread feeding amount 2 Move the trimmer driving arm 3 by hand and check that upper thread feeding is completed before the upper thread is cut Note If the above adjustment is not made it may result in the upper thread pulling out or in upper thread clamping errors 4 21 Adjusting the feed timing belt 4361Q 4362Q 1 Remove the bolt 1 and the nut 2 2 Loosen the three screws 3 so that the feed pulse motor 4 moves easily 3 While using a spring gauge to push the notch in the motor mounting bracket 5 with a force of 98 N tighten the screws 3 4 Check that the timing belt 6 moves smoothly 5 Gently tighten the bolt 1 and the nut 2 If you do not have a spring gauge adjust the tension with the bolt 1 and the nut 2 so that the amount of belt deflection is approximately 3 5 mm when a force of 5 N is applied in the middle of the belt span Then tighten the three screws 3 HE 800A 101 4 ADJUSTMENT 4 22 Adjusting the upper shaft timing belt 1 Loosen the two bolts 1 2 Use a spring gauge to push the notch in the tension pulley plate 2 with a force of 98 N and then tighten the bolts 1 If you do not have a spring gauge adjust the tension so that the amount of belt deflection is approximately 5 mm when a force of 5 N is applied in the middle of the belt span between timing pulley U 3 and the idle pulley 4 in the place indicated by arrow A 4363Q
90. et screws 6 and then remove the timing pulley assembly 7 from the lower shaft 5 4 Loosen the two set screws 8 and then remove the shaft 9 5 Remove the collar 10 and the idle pulley 11 HE 800A 47 3 ASSEMBLY 3 ASSEMBLY 3 1 Lower shaft and idle pulley mechanisms ij Align edges of pulley and lower shaft 1 After attaching the timing belt to the idle pulley 1 insert the collar 2 2 Insert the shaft 3 into the bed and tighten the two set screws 4 3 Install the timing pulley assembly 5 to the lower shaft 7 with the two set screws 6 4 Place the set screw collar assembly 8 onto the lower shaft 7 and then tighten the two set screws 9 after checking the thrust direction The screw flat should align with the set screw which comes first when the lower shaft is rotated in the rotation direction 5 Install the cover 10 with the two screws 11 48 HE 800A 3 ASSEMBLY 3 2 Lower thread trimmer mechanism 1 4175Q 4178Q Apply grease e to cam groove N O 21 9 and to 14 el Apply grease to 23 4179Q Apply grease to 12 4177Q 4180Q 1 Insert the roller shaft 1 into the lower thread trimmer cam lever 2 and tighten the nut 3 2 Place the roller 4 onto the roller shaft 1 and then install the retaining ring 5 3 Install the lower thread trimmer cam connecting rod 6 to the lower thread trimmer cam 9 w
91. feed pulse motor 4 12 Loosen the two set screws 25 and then remove the support shaft 26 13 Remove the timing belt 27 and the pulley B assembly 28 14 Remove the two ball bearings 29 15 Loosen the set screw 30 and then remove the feed guide shaft B 31 from the feed arm support 16 16 Remove the two bolts 32 17 Remove the feed arm support 16 and the feed guide shaft A 33 18 Remove the two retaining rings 34 and then remove the linear bush 35 from the feed arm support 16 19 Remove the two screws 36 and then remove the two ball bearing stoppers 37 20 Remove the two linear bushes 38 for the feed guide shaft B 31 HE 800A 43 2 DISASSEMBLY 2 21 Feed mechanism 2 4157Q 4 13 1 Be 02 15 11 4158Q 4159Q Remove the two screws 1 and then remove the feed arm support 2 and the opening cam assembly 3 from the feed arm assembly 4 2 Remove the shoulder screw 5 and then remove the work clamp assembly 6 and the spring 7 from the feed arm assembly 4 3 Loosen the set screw 8 and then remove the feed arm assembly 4 and the feed arm support shaft 9 from the feed arm support 10 4 Remove the two bolts 11 and washers 12 and then remove the support plate 13 from the feed arm 14 5 Remove the two bolts 15 and washers 16 and then remove the cam 17 from the support plate 13 6 Remove
92. g force 5 15 1 11 stronger for larger values 02 Machine motor braking time 50 500 ms 10 70 03 Machine motor acceleration time 5 70 1 46 13 faster for larger values 04 Machine motor deceleration time 5 70 1 46 faster for larger values 05 Machine motor stopping speed 150 200 rpm 10 190 06 Spare 07 Spare 08 Spare 09 Spare For 100 V and 110 V specifications the initial value of the parameter No 03 is set to 13 HE 800A 143 6 ELECTRIC COMPONENTS AND SOFTWARE 6 7 Input check list Use the following procedure when checking for switch and sensor breakdown cord breakage and adjusting the sensor positions The CPU can be checked as to whether it has correctly interpreted signals from switches and sensors Segment brother A o o D Power E ANO o f caution PROGRAM NO O 5 o M o w 1 PROGRAM N M m i CUTTER ON SELECT ENTER 1 Turn on the power while pressing the parameter UP key 1 Input check mode will be activated and the check mode value will be displayed in the program No LED 2 2 Press the program No keys 3 and 4 to select a desired check mode F1 F3 3 When the switch or sensor is turned on the corresponding segment on the parameter display LED 5 or indicators on the operation panel will react Turn the switch on and off to check it and move the object by hand to check the sensor 4 When returning to normal operat
93. h cannot be reset a single long beep will sound Code Cause Remedy 1 Release the STOP switch To restart sewing press the parameter DOWN key and then depress the treadle to step 2 E 00 STOP switch was pressed To cancel sewing press the RESET key 2 If an error still occurs after 1 is carried out check that connector P10 on the main P C board is properly connected Thread the thread or check that the thread has been passed through the thread guide To restart sewing press the parameter DOWN key and then depress the treadle to step 2 To cancel sewing press the RESET key e N E 01 Upper thread breakage 2 If an error still occurs after 1 is carried out check that connector P10 on the main P C board is properly connected 1 Turn the pulley by hand to set the needle to its highest position 2 Check if the sewing machine operation is sluggish E 02 Needle up sensor is OFF because of a reason such as thread tangled around the rotary hook 3 If an error still occurs after 1 and 2 are carried out check that connector P3 on the main P C board is properly connected Turn off the power Check that connector P11 on the main P C board is properly connected Check the operation of the zigzag home position sensor monitor lamp 1 Turn off the power 2 Check that connector P11 on the main P C board is E 06 Feed positioning is not carried out properly connected 3 Check the operation of th
94. he Polish with buff or replace the part thread path Especially pay attention to finishing around needle plate hole O Co O pa Needle plate hole 3996Q Needle Needle installation Insert needle fully into needle bar pea manua Needle size Replace needle with thicker one Thread chips or dust Rotary hook rim Remove thread chips or dust Rotary hook edge Around needle plate hole Upper thread Upper thread tension Increase upper thread tension while checking Instruction PAE a itcedetctallt 1G a a eaea e eared ae ea eee es mania Thread and needle Replace needle with one that fits for the thread Rotary hook holder Flaw on the rotary hook Polish with buff or replace the part holder Fr Check flaw here 1 i Adjust the rotary hook 85 po overlap amount 5 3997Q Rotary hook holder and Adjust the rotary hook holder and inner rotary hook inner rotary hook overlap overlap amount 85 amount Rotary hook Rotary hook lubrication Decrease the quantity of lubrication oil Note that if you reduce the amount of oil too much 102 thread breakages may occur Bobbin winder guide Bobbin thread tension Adjust the tension on the bobbin winder guide r Uneven bobbin winding Move bobbin winder tension bracket up and down to Instruction adjust manual Lower thread Lower thread tension Adjust the lower thread tension Instruction manual Bobbin case Damaged outside of Polish with buff or replace the part bobbin case and bent Use t
95. he HE 800A bobbin case bobbin holder spring etc Stitch patterns Purl stitch whip stitch Set using parameter number 11 Instruction manual 110 5 13 Upper thread run out 5 TROUBLESHOOTING a _____ Cause Check Remedy Page Upper thread trimmer Installation position of Adjust the installation position of upper thread assembly upper thread trimmer trimmer assembly by moving the setting plate assembly assembly Upper thread trimmer longitudinal position adjustment Upper thread trimmer cutting depth adjustment 91 92 Upper thread trimmer Adjust so that the thread does not come out when s assembly holding force you cut it with scissors and hold the end of the thread between your fingers and gently swing the assembly Bend the scissors U or replace them so that the correct force is applied Repair any damage from striking the needle Cotton yarn 60 Holding force approx 2N 4006Q Opening cam position Adjust the position so that the scissors do not touch the opening cam when the work clamp is lowered 94 0 5mm 4007Q Tension release End of tension release at Use parameter number 63 to retard the tension Instruction timing the beginning of sewing _ release timing eee manuel lt Opening amount of Adjust the zigzag tension discs by moving the zigzag tension discs and tension stud bracket in and out bar tack tension discs Adjust the bar tack tension discs opening
96. he bolt 12 Install the sensor 13 to the zigzag sensor plate 15 with the screw 14 Insert the wick 16 into the motor lever shaft 17 Pass the motor lever shaft 17 through the zigzag connecting rod 3 and the two washers 18 so that the screw stop is aligned correctly and then secure to the motor lever 20 by tightening the set screw 19 10 Install the zigzag sensor plate 15 to the motor bracket 22 with the two screws 21 so that each screw is in the middle of the slot 60 HE 800A 3 ASSEMBLY 3 13 Cutter mechanism 1 4224Q 4226Q O m 4225Q Insert 4227Q Pass the cutter driving arm shaft 1 through the set screw collar 2 and the cutter driving arm assembly 3 in the direction shown in the illustration 2 Secure the set screw collar 2 with the two set screws 4 so that the screw stops are aligned correctly 3 Install the cutter driving arm assembly 3 with the set screw 5 so that there is no play in the thrust direction and so that there is no gap 4 Provisionally install the two cutter bar guides 6 with the four screws 7 5 Install the cutter driving link 8 and the needle bar bracket slide block 9 to the driving shaft holder assembly 10 6 Install the cutter driving link 8 to the cutter driving arm assembly 3 7 Tighten the four screws 7 so that the needle bar bracket slide block 9 moves up and down easily without play 8 Install the stopper c
97. he oil cap 5 3 Pass the wick 2 through the oil pipe B 6 and then install it to the oil terminal 3 4 Push the oil tube 7 that is connected between the oil terminal and the plunger pump into the oil terminal 3 5 Push the oil tube 8 that is connected between the oil terminal and the oil outlet into the oil terminal 3 6 Install the tube support 9 to the wick base support 11 with the screw 10 7 Attach the oil tube 8 to the tube support 9 and then install the oil terminal 3 to the wick base support 11 with the two screws 12 8 Pass the wick 13 from the needle bar bracket the two wicks 14 from the bush and the wick 15 from the support shaft through the oil tube 16 and then install the felt base A 17 to the wick base support 11 with the screw 18 9 Install the oil tube 19 for lubricating the bush M and the zigzag lever shaft and the oil tube 20 for lubricating the zigzag mechanism to the wick base support 11 with the fastening band 21 10 Install the wick base support 11 with the two screws 22 11 Insert the felt 23 and then install the cap 24 with the screw 25 74 HE 800A 3 ASSEMBLY 3 22 4 Plunger pump mechanism 4272Q a eee TE er 4273Q Check that the notches A of the plungers 1 and the lower shaft 2 are aligned and then insert the two plungers 1 and the compression springs 3 into the bush M 4 and secure them w
98. hen tighten the nuts 6 and 7 80 HE 800A 4 ADJUSTMENT 4 3 Adjusting the feed home position sensor position 1 5mm Feed sensor E Check that they are not touching 4287Q 1 Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 2 If the clearance between the feed arm support 1 and the linear bushing 2 is 2 mm the following adjustment is not necessary If the clearance is not 2 mm turn off the power 3 Loosen the screw 3 and adjust the position of the feed sensor support plate 4 4 Repeat the procedure from step 1 HE 800A 81 4 ADJUSTMENT 4 4 Adjusting the work clamp home position sensor position Be sure to make this adjustment before carrying out 4 14 Adjusting the upper thread trimming 4288Q Approx 1mm 4289Q Turn on the power Do not set the sewing machine to the home position 2 Move the trimmer driving arm 1 in the direction of the arrow to move the upper thread trimmer driving link 2 until it is stopped by the face plate 3 Loosen the two screws 3 and then move the dog 4 by approximately 1 mm in the direction of the arrow past position A where the work clamp sensor turns on the work clamp sensor LED lights This is the provisional position for the work clamp home position sensor The final position is determined when making the adjustment in 4 14 8 Adjusti
99. holder DL 22 to the cutter holder M 20 with the two screws 23 11 Provisionally install the cutter 24 to the cutter holder DL 22 with the screw 25 12 Fully tighten the bolts 19 and 21 so that the cutter 24 is in the center of the cutter groove in the needle plate 26 when the cutter is lowered 13 Tighten the two screws 23 so that the distance between the needle bar 27 and the cutter 24 is 0 3 mm 14 Install the cutter 24 with the screw 25 so that the tip A of the cutter blade is aligned with the top of the needle plate when the cutter is pressed down by hand to its lowest position If using the flat cutter 28 install with the screw 25 so that there is a clearance of 1 5 2 0 mm between the cutter and the top of the needle plate HE 800A 63 3 ASSEMBLY 3 15 Upper shaft and tension pulley mechanism 4236Q 4237Q Upper shaft pulley mating mark 4238Q 4239Q Install the two retaining rings 1 to the upper shaft 2 Press fit the ball bearing 3 as far as the retaining rings 1 Upper shaft assembly 4 Place the timing pulley U assembly 5 timing belt 6 bobbin winder pulley 7 and set screw collar assembly 8 onto the upper shaft assembly 4 4 While pushing the timing pulley U assembly 5 against the retaining rings 1 secure it by tightening the two set screws 9 5 While pushing the bobbin winder pulley 7 against the timing pulley U assembly
100. home position can 2 Input signal spare 2 not be found 3 Input signal spare 3 e The feed mechanism and work clamp mechanism do not 4 Input signal spare 4 operate 5 Input signal spare 5 e One of error E 06 and E 07 is displayed 6 Cutter home position sensor Cutter does not operate signal e Error E 08 is displayed 7 Feed PM overcurrent signal 8 Work clamp PM overcurrent signal 9 55V relay input signal 10 55V voltage watch signal 11 12 13 OV 14 OV 15 OV 16 OV 17 18 19 20 21 Cutter return signal 22 Cutter signal 23 Cutter signal 24 Spare solenoid 1 25 Spare solenoid 2 26 Spare solenoid 3 HE 800A 131 6 ELECTRIC COMPONENTS AND SOFTWARE 2 Circuit board connectors Sub circuit board P1 EXP1 Pin no Signal name Probable symptoms due to poor contact 1 5V e The feed home position and work clamp home position can 2 5V not be found 3 5V e The feed mechanism and work clamp mechanism do not 4 5V operate 5 24V e One of error E 06 and E 07 is displayed 6 24V e 55 V power supply for driving the feed mechanism and 7 24V work clamp PM control is not possible 8 424V e Error E 44 is displayed 9 Feed PM clock e The valve does not operate 10 Work clamp PM clock 11 12 13 Work clamp PM direction signal 14 Feed PM direct
101. hread take up amount Loosen the screw to decrease thread take up amount so that upper thread does not pull out of scissors assembly at the sewing start Screw Decrease gt 101 4000Q 5 6 Uneven seams 4 Uneven sewing pitch at the sewing start Bird s nests form at the sewing start and after 5 6 mm the sewing pitch suddenly increases Cause Check Remedy Page Lower thread clamp Lower thread clamp Advance the timing at which the lower thread clamp 97 opening timing starts to open 5 7 Uneven seams 5 Poor rounding of seam Cause Check Remedy Page Thread tension Zigzag thread upper Adjust the upper thread tension appropriately Instruction NR CECL EEE EE E R 8 eae Zigzag tension disc Check the opening of the zigzag tension discs 100 OPERI T anase __ Replace the tension release solenoid hn Lower thread tension Adjust the lower thread tension appropriately Instruction Threading Upper thread threading Thread the upper thread correctly peer Lower thread threading Thread the lower thread correctly Instruction Stitch patterns Purl stitch whip stitch Set using parameter number 11 pec Tension release Tension release timing Use parameter numbers 63 to 66 to change the Instruction tension release on and off timing manual 5 8 Uneven seams 6 Around rear tack or front tack Cause Check Remedy Page Tension release Tension release timing Use parameter numbers 63 to 66 to change the Instruction tensio
102. ient power supply capacity may cause prob lems with correct operation The ambient temperature should be within the range of 5 C to 35 C during use Temperatures which are lower or higher than this may cause problems with correct operation The relative humidity should be within the range of 45 to 85 during use and no dew formation should occur in any devices Excessively dry or humid environments and dew for mation may cause problems with correct operation Avoid exposure to direct sunlight during use Exposure to direct sunlight may cause problems with correct operation In the event of an electrical storm turn off the power and disconnect the power cord from the wall outlet Lightning may cause problems with correct operation Installation 9 A Machine installation should only be carried out by a qualified technician Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done The sewing machine weighs approximately 56 kg The installation should be carried out by two or more people Do not connect the power cord until installation is complete otherwise the machine may operate if the treadle is depressed by mistake which could result in injury Use both hands to hold the machine head when tilting it back or returning it to its original position If only one hand is used the weight of the machine head may cause your hand to slip and your hand may get caught
103. ificati 6 O OOV 110V specifications e ON OFF OFF 200V 220V 230V 380V 400V specifications 7 2 OFF OFF ON 8 OFF OFF 142 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE 6 6 Description of machine motor parameters Note Do not change the default values for the machine motor parameters unless it is absolutely necessary to do so o amp Power RESET as o CAUTION PROGRAM NO o fH TEST FEED o 3 MANUAL oo lool a PROGRAM N CUTTER ON 4375Q 1 Turn on the power while pressing the ENTER key 1 Machine motor parameter setting mode will then start and the machine motor parameter number will flash in the program number LED 2 2 Press the program No keys 3 and 4 to select the number for the machine motor parameter to be changed 3 Press the ENTER key 1 The program number LED 2 will stop flashing and illuminate steadily and the parameter setting will flash in the parameter display LED 5 4 Press the parameter keys 6 and 7 to change the parameter setting and then press the ENTER key 1 The parameter setting will be changed and the parameter display LED 5 will stop flashing and illuminate steadily 5 Press the SELECT key 8 to change the mode to automatic mode No Setting items Setting range Unit Default 00 Machine motor stopping position 5 70 1 47 forward for larger values 01 Machine motor brakin
104. ine or physical damage to equipment and surroundings Symbols A eeeeee This symbol indicates something that you should be careful of The picture inside the triangle indicates the nature of the caution that must be taken For example the symbol at left means beware of injury S e eeeee This symbol S indicates something that you must not do eeeeee This symbol indicates something that you must do The picture inside the circle indicates the nature of the thing that must be done For example the symbol at left means you must make the ground connection HE 800A 2 Notes on safety DANGER AN Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury CAUTION Environmental requirements Use the sewing machine in an area which is free from sources of strong electrical noise such as high frequency welders Sources of strong electrical noise may cause prob lems with correct operation Any fluctuations in the power supply voltage should be within 10 of the rated voltage for the machine Voltage fluctuations which are greater than this may cause problems with correct operation The power supply capacity should be greater than the requirements for the sewing machine s electrical consumption Insuffic
105. iner 7 starts to hold the lower thread Note If this timing is reversed it will cause problems such as an excess trailing length of upper thread 98 HE 800A 4 ADJUSTMENT 4 17 Adjusting the thread breakage detector Section A SY 2mm Section B 4353Q 4354Q 1 Tighten the lever stopper 1 inside the slotted hole 2 Loosen the screw 4 and then adjust so that the distance A at the thread guide 3 is 2 mm when the thread breakage detector lever 2 contacts the lever stopper 1 3 Loosen the screw 6 of the lever stopper 5 and then adjust so that the distance B at the thread guide 3 is 1 mm when the thread breakage detection lever 2 contacts the stopper 5 0 1 0 5mm Section C 4mm 4355Q 4356Q 4 Loosen the screw 7 and then adjust so that the distance C at the balancer 8 is 4 mm 5 Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 6 Loosen the two screws 10 and then adjust so that the thread breakage detector sensor 9 turns on LED illuminates when the distance between the thread breakage detection lever 2 and the lever stopper 1 is 1 mm 7 When the thread guide 3 is moved to position B and then released check that it moves smoothly back to position A 8 If the thread guide 3 does not move smoothly check that the clearance between the thread breakage detection lever
106. installation height of the upper thread scissors has been changed When the gradual opening timing of the upper thread scissors has been changed When the opening timing of the upper thread scissors has been changed 4 4 Adjusting the work clamp home position sensor position 4311Q 4 14 1 Adjusting the longitudinal feed arm assembly position q q 4313Q 2 2 1 4312Q 4 14 2 Adjusting the trimmer driving arm assembly position 3 2 1 4 14 3 Adjusting the lateral position of the a thread scissors at the sewing start A 4314Q 4 14 4 Adjusting the longitudinal position of ine upper thread scissors 4315Q AR q ow 4 14 5 Adjusting the cutting depth of the upper thread scissors 4316Q Cag q o 4 14 6 Adjusting the installation height of the upper thread scissors fi 4317Q p S 4 o 4 14 7 Adjusting the upper thread scissors gradual opening timing S lt q n e 8 4 3 2 2 1 4318Q _ 4 14 8 Adjusting the upper thread scissors opening timing D ia T 9 5 4 3 1 lt q 4319Q mm HE 800A 89 4 ADJUSTMENT Note Check the work clamp home position sensor position before adjusting the upper thread trimming Refer to 4 4 Adjusting the work clamp home position sensor position 4 14 1 Adjusting the longitudinal feed arm assembly position 1 Turn on the
107. ion turn power off and then on again lt Example gt When checking the cloth presser switch Segment 4 A a Check whether a response occurs here 3559Q 144 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE No Check mode Check items Indicator Segment 1 Parameter UP key Automatic mode indicator 2 Parameter DOWN key Test feed mode indicator 3 ENTER key Manual mode indicator 4 SELECT key Program mode indicator 5 RESET key Warning indicator 6 CUTTER ON key Cutter on indicator 7 Work clamp switch Segment 4 A 8 Work clamp lifter switch Segment 4 B 9 Start switch Segment 4 D 10 F1 Needle up sensor Segment 4 E 11 Needle down sensor Segment 4 F 12 Timing sensor Segment 4 G 13 Zigzag home position sensor Segment 3 G 14 Feed home position sensor Segment 3 B 15 Work clamp home position sensor Segment 3 C 16 Cutter home position sensor Segment 3 D 17 Upper thread breakage detection sensor Segment 3 F 18 Stop switch Segment 2 A 19 Pause connection signal Segment 2 B 20 Panel DIP switch B No 1 Segment 4 A 21 Panel DIP switch B No 2 Segment 4 B 22 Panel DIP switch B No 3 Segment 4 C 23 Panel DIP switch B No 4 Segment 4 D 24 Panel DIP switch B No 5 Segment 4 E 25 Panel DIP switch B No 6 Segment 4 F 26 Panel DIP switch B No 7 Segment 4 G 27 Panel DIP switch B No 8 Segment 4 D P
108. ion signal 15 Work clamp PM current control signal 16 Feed PM current control signal 17 PM current OFF signal 18 19 20 21 VALV1 22 VALV2 23 VALV3 24 VALV4 25 VALV5 26 VALV6 27 55V OFF signal 28 55V relay output signal 29 OV 30 OV 31 OV 32 OV P2 FDPM Pin no Signal name Probable symptoms due to poor contact 1 Feed PM driving current A e The feed home position can not be found 2 Feed PM driving current B e The feed mechanism does not operate 3 Feed PM driving current C e Error E 06 is displayed 4 Feed PM driving current D 5 Feed PM driving current F P3 PER Pin no Signal name Probable symptoms due to poor contact Relay input signal e The feed home position and work clamp home position can not be found 2 OV The feed mechanism and work clamp mechanism do not operate 3 IN TAA ouput signal one of error E 06 and E 07 is displayed 4 55V OFF signal e 55 V power supply for driving the feed mechanism and z a work clamp PM control is not possible e Error E 44 is displayed 132 HE 800A P4 VALV 6 ELECTRIC COMPONENTS AND SOFTWARE Pin no Signal name Probable symptoms due to poor contact VALV1 VALV2 VALV3 VALV4 VALV5 VALV6 Olo NIDA A OO Nh gt 24V oO 24V Special edition P5 FTPM Pin no Signal name Probable symptoms due to poor contact Work clamp PM driving current A
109. ion which result from unauthorized modifications to the machine will not be covered by the warranty D 0G jii HE 800A 3 Warning labels The following warning labels appear on the sewing machine Please follow the instructions on the labels at all times when using the machine If the labels have been removed or are difficult to read please contact your nearest Brother dealer cover wae HRA CINETS RERBEBS BRERA KETS MARES SSS BTI RERE TERHS EREU SHOT HIRT ALES SHE DITT MRFRET SCE A DANGER DEAN AF TCE Bitte schalten sia den Eteindre l interrupteur et heridas Apagar el hauptschalter aus und i heed attendre 5 minutes avant interruptor principal y warten sie 5 minuten abdeckung ffnen de abrir esta cubierta Hazardous voltage Hochspannung Un voltage non adapte Un voltaje inadecuado will cause injury verletzungsgefahr provoque des blessures puede provocar las Turn off main switch and wait 5minutes before opening this bevor sie diese d ouvrir le capot esperar 5 minutos antes EREUOCH OD AAL REY HORR HHPRP RABE IT SCL Moving parts may cause injury Operate with safe ty devices Turn off main switch before threading changing bobbin and needle cleaning etc Be sure to connect the ground If the ground connection is not secure you run a high risk of receiving a serious electric shock and problems with correct operation may also occur Do not touch any of
110. isionally tighten the set screw 12 7 Tighten the four bolts 9 and the set screw 12 so that the presser driving arm 8 moves up and down easily and so that there is no play in the gear 8 Insert the motor bracket assembly 6 into the arm from the top 9 Position the motor bracket assembly 6 using the two positioning pins 13 and then install it by tightening the four screws 14 and the screw 15 10 Install the clamp sensor plate 16 with the flat screw 17 11 Install the clamp sensor 18 with the screw 19 12 Install the clamp sensor dog 20 to the upper thread trimmer driving link 22 with the two screws 21 HE 800A 59 3 ASSEMBLY 3 12 Needle zigzag mechanism 4220Q 4222Q 4221Q 4223Q _ oR OW 6 7 8 9 Pass the zigzag connecting rod shaft 1 through the zigzag lever 2 and the zigzag connecting rod 3 and then tighten the set screw 4 Pass the wick 5 through the zigzag connecting rod shaft 1 and the oil tube 6 and then push it into the lubricating hole 7 Push the felt 8 into the lubricating hole 7 to prevent the oil tube 6 from coming out Install the two fastening bands 9 so that they face in the position shown in the illustration Pass the zigzag lever assembly F 10 through the arm and position it in the thrust direction using the thrust washer 11 and the zigzag lever 2 Secure the zigzag lever assembly F 10 by tightening t
111. ith the driving lever roller 7 and the shoulder screw 8 Lower thread trimmer cam assembly 10 4 Install the cover 11 to the bed 5 Pass the lower thread trimmer cam assembly 10 through the cover 11 and install it to the bed with the two lever shafts 12 6 Tighten the two set screws 13 so that the lower thread trimmer cam assembly 10 moves smoothly without any play 7 Insert the roller 4 into the lower thread trimmer cam 9 and then install it to the bed with the lower thread trimming cam shaft 14 washer 15 and retaining ring 16 8 Tighten the set screw 17 9 Connect the presser lifter connecting rod set 18 and the lower thread trimmer cam lever 2 with the spacer 19 the plain washer D 20 and the bolt 21 10 Install the lower thread trimmer link assembly 22 with the shoulder screw 23 11 Connect the lower thread trimmer link assembly 22 and the lower thread trimmer cam connecting rod 6 with the shoulder screw 24 12 Install the opening plate assembly 25 with the shoulder screw 26 13 Install the plate spring 27 as shown in the illustration HE 800A 49 3 ASSEMBLY 3 3 Lower thread trimmer mechanism 2 4181Q 4183Q Press down j Forward Apply grease to cam groove 8 and to 10 4182Q 4184Q 1 Install the screw 1 to the base plate 2 2 Install the lever assembly 3 and the lower thread retainer 4 to the base p
112. ith the two screws 5 Insert the oil tube 6 into the lubricating hole to the right of the bush M 4 Insert the oil tube 7 that is connected between the plunger and the filter into the lubricating hole to the left of the bush M 4 4 Insert the oil tube 8 into the lubricating hole to the right of the bush M 4 5 Pass the outlet of the oil tube 8 through the tube support 9 and then install the tube support 9 to the bed with the screw 10 6 Insert the oil tube 11 that is connected between the oil terminal and the plunger pump through the lubricating hole to the left of the bush M 4 7 Pass the oil tube 13 that is connected between the oil terminal and the oil outlet through the tube support D 12 and then install the tube support D 12 to the bed with the screw 14 8 Secure the four tubes that are coming out from the bush M 4 to the bed in two places as shown in the illustration with the cord holders 15 screws 16 and plain washers 17 9 Install the pump filter 18 to the oil filter bracket 21 with the two springs 19 and the two screws 20 10 Insert the oil tube 7 that is connected between the plunger and the filter through the oil filter bracket 21 11 Install the oil filter bracket 21 to the bed with the three screws 22 WN HE 800A 75 3 ASSEMBLY 3 22 5 Rotary hook lubrication mechanism 4274Q 4276Q 1 2 4 4275Q 4 4277Q 1 Pass the wi
113. justing the thread tension at the tack tension control 9 Place the two tension discs 28 tension disc pressers 29 and 30 onto the tension stud 31 and then place the collar 32 onto the tension stud 31 as far in as it will go 10 Place the tension spring 33 and the washer 34 onto the tension stud 31 and then tighten the tension nut 35 Tension stud assembly 36 11 Provisionally install the tension release lever bracket 37 to the tension stud assembly 36 12 Attach the spring 38 13 Install the tension release lever 39 with the shoulder screw 40 14 Fully tighten the tension stud assembly 36 Nh a Ro 56 HE 800A 3 ASSEMBLY 3 9 Presser lifter mechanism 1 4212Q 4214Q 5 amp 6 Apply grease to 12 Or 4 lt a i Insert into the amer X roove J E a 26 27 24 Apply grease to 21 Apply grease 4213Q 4215Q 1 Install the presser lifter connecting rod assembly 1 and the knee lifter lever 2 with the spacer 3 the washer D 4 and the bolt 5 Presser lifter connecting rod set 6 2 Install the driving link 7 and the knee lifter lever 8 with the shoulder screw 9 Lifter lever assembly 10 3 Install the presser lifter connecting rod set 6 and the lifter lever assembly 10 with the shoulder screw 11 4 Insert the two trimmer driving levers 12 to the inside of the arm 5 Pass the
114. k Remedy Page Feed pulse motor Cord connection Check the cord connections and contacts Upper thread Upper thread scissors Remove and re install the upper thread scissors scissors position 91 Projection on scissors M is inserted Always make sure that the upper thread scissors are in the correct position before use 4025Q Check if the cam opens Adjust the cam position the stop plate If the feed mechanism operates when the cam has not opened the stop plate the cutter will bump against the upper thread scissors NG LJ oK L 95 4018Q 120 5 TROUBLESHOOTING Cause Check Remedy Page Feed home position Feed home position Adjust the feed home position sensor position 81 sensor sensor position Feed timing belt Feed timing belt tension Adjust the feed timing belt 101 5 27 Needle does not zigzag or noise occurs when needle zigzags Cause Check Remedy Page Zigzag home position Zigzag home position Adjust the zigzag home position sensor position 80 sensor sensor position Stopper Stopper position Adjust the stopper position 80 5 28 Sewing machine stops during sewing Cause Check Remedy Page Thread breakage Thread breakage detector Adjust the thread breakage detector position detector position If the detector is not adjusted sewing may stop 99 even when the thread is not broken Pauses Panel DIP switch A No When pane
115. l DIP switch A No 3 is set to ON 3 sewing will pause when the treadle is depressed backward Instruction If the treadle is depressed very firmly and then manual released the pedal may depress backward and cause sewing to be paused Threading Upper thread threading Pass the thread correctly through the thread guide Ce u Error E 07 Upper thread scissors Apply grease to the inclined face of the opening 94 operation cam 5 29 Upper shaft does not rotate as far as the needle up stop position Cause Check Remedy Page Thread retainer and Thread trimmer Turn the machine pulley backward to set the rotary hook are mechanism position needle bar to the needle up position touching Push the thread driving arm in the direction of the arrow to set the thread trimming mechanism to the home position Thread driving arm 4026Q HE 800A 121 6 ELECTRIC COMPONENTS AND SOFTWARE 6 ELECTRIC COMPONENTS AND SOFTWARE Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury 6 1 Precautions at the time of adjustment Pay attention to the following when opening the control box for maintenance Electric shock Some large capacitors may have a high voltage remaining in them for up to 5 minutes after the pow
116. late 2 with the collar 5 and the screw 6 3 Install the lower thread retainer 4 to the lever assembly 3 with the two screws 7 4 Insert the roller of the lever assembly 3 into the cam groove of the knife driving lever 8 5 Install the knife driving lever 8 to the base plate 2 with the shoulder screw 9 the collar 10 the washer U 11 and the washer D 12 6 Install the lower thread clamp plate assembly 13 to the base plate 2 with the shoulder screw 14 the plain washer 15 and the washer 16 7 Install the lower thread presser 17 to the base plate 2 with the shoulder 18 and the screw 19 8 Install the fixed knife set 20 to the knife driving lever 8 with the two screws 21 9 Install the needle plate 22 with the two flat screws 23 so that it is parallel to the base plate 2 10 Provisionally install the base plate 2 to the top of the bed with the four screws 24 11 While pushing the base plate 2 to the right so that the needle 25 is in the center of the needle hole 26 in the longitudinal direction securely tighten the four screws 24 12 Connect the lower thread trimmer link assembly 27 and the knife driving lever 8 with the shoulder screw 4 37 28 50 HE 800A 3 ASSEMBLY 3 4 Feed mechanism 1 4185Q 4187Q Align the pulley support shaft 14 with the worked surface of the bed 4186Q 4189Q 4190Q Install the two linear bushes 2 for the feed gui
117. late 5 10 Remove the screw 26 HE 800A 45 2 DISASSEMBLY 2 23 Lower thread trimmer mechanism 2 4166Q 17 4167Q 4164Q 4165Q 4168Q 1 Remove the plate spring 1 Remove the shoulder screw 2 and then remove the opening plate assembly 3 Remove the shoulder screw 4 Remove the shoulder screw 5 and then remove the lower thread trimmer link assembly 6 Remove the bolt 7 plain washer D 8 and spacer 9 Loosen the set screw 10 Remove the lower thread trimmer cam shaft 11 washer 12 and retaining ring 13 Remove the lower thread trimmer cam lever 14 Loosen the two set screws 15 10 Remove the two lever shafts 16 11 Remove the lower thread trimmer cam assembly 17 from the cover 18 12 Remove the cover 18 13 Remove the driving lever roller 19 and shoulder screw 20 and then remove the lower thread trimmer cam connecting rod 21 from the lower thread trimmer cam 22 14 Remove the retaining ring 23 and then remove the roller 24 15 Remove the nut 25 and then remove the roller shaft 26 from the lower thread trimmer cam lever 14 OOANDOABRWNDY 46 HE 800A 2 DISASSEMBLY 2 24 Lower shaft and idle pulley mechanisms 1 Remove the two screws 1 and then remove the cover 2 2 Loosen the two set screws 3 and then remove the set screw collar assembly 4 from the lower shaft 5 3 Loosen the two s
118. lock 4 into the groove in the crank rod guide 1 Secure the thread take up crank 8 by tightening the two set screws 9 NOS smoothly with no play 66 HE 800A Insert the support shaft 10 and secure it by tightening the set screw 11 so that the thread take up moves 3 ASSEMBLY 3 18 Needle bar and thread take up mechanisms 2 4245Q 4246Q 19 4247Q 8 9 Insert the needle bar 2 into the needle bar bracket assembly 1 and then pass it through the needle bar clamp 3 as shown in the illustration Set the projection of the needle bar clamp 3 into the groove in the needle bar guide 4 and then install to the needle bar bracket assembly 1 with the two bolts 5 so that the needle bar 2 moves smoothly Insert the slide block 6 of the needle bar bracket assembly 1 into the zigzag lever shaft 7 Insert the slide block 8 of the needle bar clamp 3 into the thread take up lever set 9 Insert the needle bar bracket assembly 1 into the arm while inserting the slide block 6 and 8 and then install it Pass the wick 11 of the needle bar bracket support shaft 10 through the arm Insert the needle bar bracket support shaft 10 and then secure it by tightening the set screw 12 so that there is no play in the needle bar bracket assembly 1 Insert the needle bar bracket guide 13 into the arm and then secure it by tightening the set screw 14
119. ly Instruction Pa ithe dette NA hee tea BANS Le A eed eed a EE eel cee ek manta Work clamp lifting speed Reduce the setting for memory switch No 02 dahil manua 5 4 Uneven seams 2 The end of the lower thread protrudes above the seam at the sewing start Lower thread is lifted up at the sewing start opening timing Lower force thread clamping Cause Check Remedy Page Lower thread retainer Lower thread retaining Adjust the lower thread retaining amount amount 96 4003Q Lower thread clamp Lower thread clamp Adjust so that the lower thread clamp plate opens 97 when the feed mechanism moves 6 7 mm If the lower thread clamp and lower thread presser are bent replace them Check that the screws are tightened Lower thread clamp 3999Q HE 800A 107 5 TROUBLESHOOTING 5 5 Uneven seams 3 Seam lifts up at the sewing start Seam lifts up and does not tighten at the sewing start Cause Check Remedy Page Upper thread Upper thread scissors Adjust the timing so that the upper thread scissors scissors gradual opening timing gradually start opening when the feed mechanism 94 EE E TETA moves about 1 5725 MM siete wens ezedettulll anuninaneds Upper thread scissors Apply grease to the inclined face of the opening 94 operation cam Upper thread feeding T
120. m the cutter bar fixing plate 5 3 Loosen the set screw 6 and then remove the cutter bar fixing plate 5 from the thread breakage perceiving shaft 7 4 Remove the two screws 8 and then remove the thread breakage sensor assembly 9 5 Remove the thread breakage perceiving shaft 7 from the arm 6 Remove the plain washers 10 and 11 and the screw 12 and then remove the thread guide 13 from the thread breakage perceiving shaft 7 HE 800A 25 2 DISASSEMBLY 2 5 Upper thread trimmer mechanism 4090Q a ISS el 10 10 24 Remove the screw 1 spring washer 2 and plain washer 3 and then remove the upper thread trimmer assembly 4 from the thread trimmer lever set 5 2 Remove the two springs 6 from the thread trimmer lever set 5 3 Remove the bolt 7 and then remove the trimmer driving arm assembly 8 from the trimmer driving lever 9 4 Remove the two bolts 10 and plain washers 11 and then remove the support plate 12 and the stopper 13 from the trimmer driving arm 14 5 Remove the retaining ring 15 and then remove the driving arm roller 16 6 Remove the nut 17 and the spring washer 18 and then remove the roller shaft 19 from the support plate 12 7 Remove the bolt 20 and then remove the longitudinal feed arm assembly 21 from the trimmer driving lever 22 8 Remove the two retaining rings 23 and then remove the longitudinal feed arm roller
121. m the direction of the face plate attach Remain needle so that the notched part of needle faces hanual frontward Needle installation height Insert the end of the needle shank so that it touches the top edge of the needle hole of the needle bar 7 Bent needle Replace needle Blunt needle tip or burr Replace needle Thin needle Use a needle with a count that matches the thread and material i Thread take up Thread take up spring Loosen the thread take up spring tension or shorten spring tension and stroke the stroke to such a degree that does not cause Instruction double hooking Adjust it while checking bar tacking manual stitches Work clamp Work clamp pressure Increase work clamp pressure The standard height of the adjustment screw is 85 approximately 30 mm so tighten it further than this Relation between work Replace work clamp assembly that fits for sewing clamp assembly and length sewing length When using knits or woven materials replace the parts with the 3 specification parts Length feed plate for specification 3 work clamp assembly for knits needle plate 1 2 for specification 3 Rotary hook Blunt rotary hook point Polish with buff or replace the part Needle bar height and Adjust the needle and hook timing needle bar lift amount 1 Adjust the needle bar height to 1 on the gauge 83 2 Adjust the needle bar lift amount to 2 on the EEE E E EE CCIT A de a Semele dulueade Te 222s sduie
122. mer Adjust so that the upper thread trimmer lever opens lever lever operating force gently when the stop plate is separated from the stopper 4013Q 5 17 Needle breakage Cause Check Remedy Page Needle Needle installation As viewed from the direction of the face plate insert EE needle fully into needle bar so that the notched part a of needle faces frontward Rotary hook Needle bar height and Adjust the needle and hook timing needle bar lift amount 1 Adjust the needle bar height to 1 on the gauge 83 2 Adjust the needle bar lift amount to 2 on the eee eT oe QOS akan aeredan dean data edd dade aialanna o Gap between needle and Adjust the gap between needle and rotary hook to rotary hook 0 01 0 08 mm Adjust to as large as possible without causing skipped stitches to occur 84 Check that rotary hook point does not strike needle in zigzag motion HE 800A 115 5 TROUBLESHOOTING Cause Check Remedy Page Needle plate Needle plate position Adjust the forward back position of the needle plate so that the needle is in the center of the needle hole i Bisect 4014Q Burr on the screw hole Polish with buff edge in event of uneven material feeding Check the chamfered side Za finishing 3 Needle plate cross section 4015Q Upper thread trimmer Needle strikes upper Refer to 5 16 Needle strikes upper thread trimmer 114 115 assembly thread
123. mount ee ee ee ee ee 101 4 21 Adjusting the feed timing belt 101 4 22 Adjusting the upper shaft timing belt 102 4 23 Adjusting the rotary hook lubrication 102 4 24 Adjusting the needle up stop position 103 4 25 Adjusting the V belt tensions trttstree 103 5 TROUBLESHOOTING See ee ee ee ae 104 5 1 Upper thread breakage 1stttrrrerrreeee 104 5 2 Skipped stitches trrrrtrrrrereee renee 105 5 3 Uneven seams 1 At the sewing start sttttrerreeee eee e teens 106 5 4 Uneven seams 2 Lower thread is lifted up at the sewing start ee ee eo 107 5 5 Uneven seams 3 Seam lifts up at the sewing start srs 108 5 6 Uneven seams 4 Uneven sewing pitch at the sewing start 108 5 7 Uneven seams 5 Poor rounding of seam ctr ttt ttt erste 108 5 8 Uneven seams 6 Around rear tack or front tack ttttttttteees 108 5 9 Uneven seams 7 Loose thread end at end backtack 109 5 10 Uneven seams 8 Thread sticking out at end backtack 109 5 11 Uneven seams 9 Sticking in needle plate eee e ene eee 109 5 12 Uneven seams 10 All stitches ee ee ee ee ee ee ee 11 0 5 13 Upper thread run Out rr ttrreteeee eee 111 5 14 Unraveling of thread trimmed by upper thread trimmer assembly ett ttetee 113 5 15 Upper thread mis trimming
124. move the spring 12 from the cutter driving arm assembly 13 and the tension release shaft 14 Remove the nut 15 and then remove the adjusting screw assembly 16 from the arm Loosen the two set screws 17 and then remove the cutter driving shaft 9 Remove the oil rejector 18 HE 800A 33 2 DISASSEMBLY 2 12 Cutter mechanism 2 4116Q 4117Q 19 4118Q 1 Loosen the bolt 1 2 Take out the solenoid plunger from the cutter solenoid 2 3 Remove the four screws 3 and then remove the cutter solenoid bracket 4 4 Loosen the set screw 5 5 Loosen the two set screws 6 and then remove the cutter driving arm shaft 7 from the set screw collar 8 and the cutter driving arm assembly 9 6 Remove the four screws 10 and then remove the cutter bar guide 11 7 Remove the cutter driving arm assembly 9 from the arm 8 Remove the cutter driving link 12 the needle bar bracket slide block 13 and the driving shaft holder assembly 14 from the cutter driving arm assembly 9 9 Remove the washer 15 and retaining ring 16 and then remove the cutter link bracket assembly 17 from the cutter link shaft 18 10 Remove the three bolts 19 and then remove the cutter solenoid 2 from the cutter solenoid bracket 4 11 Remove the spring washer 20 and the two nuts 21 and then remove the solenoid stopper 22 from the solenoid plunger 34 HE 800A 2 DISA
125. n back on again The zigzag pitch front tack pitch and rear tack pitch E 55 Stitch no error Exceeds 700 will be automatically doubled and the error will be stitches cleared 2 If an error still occurs after 1 is carried out turn off the power and initialize the parameter settings E 59 Sewing data error Turn off the power and initialize the parameter settings Turn off the power lt Software gt If the sewing machine stops before the needle up position reduce the setting value for machine motor parameter No 00 machine motor stopping position If the sewing machine stops after the needle up position E 62 Needle up error during operation increase the setting value for machine motor parameter No 00 machine motor stopping position lt Hardware gt 1 Turn the pulley by hand and check if the upper shaft locks or not 2 If an error still occurs after 1 is carried out check that connector P3 on the main P C board is properly connected 1 Turn off the power 2 Turn the pulley by hand and check if the upper shaft E 63 Needle down error during operation ORS arot 3 If an error still occurs after 1 is carried out check that connector P3 on the main P C board is properly connected 1 Turn off the power 2 Turn the pulley by hand and check if the upper shaft oe locks or not E64 Timing signal error during operation 3 If an error still occurs after 1 is carried out check that connector P3 on
126. n release on and off timing manual Threading Upper thread threading Thread the upper thread correctly pe Lower thread threading Thread the lower thread correctly Instruction Zigzag thread Zigzag tension disc Adjust the tension disc opening amount tension opening Check the opening of the zigzag tension discs 100 Replace the tension release solenoid Upper thread Upper thread scissors Apply grease to the inclined face of the opening 94 scissors operation cam 108 5 TROUBLESHOOTING 5 9 Uneven seams 7 Loose thread end at end backtack Cause Check Remedy Page Backtack shape Check the backtack Set the value for parameter No 68 to 1 0 shape If the value is set to 1 0 the rear tack will change Instruction manual 1 0 4004Q 5 10 Uneven seams 8 Thread sticking out at end backtack Cause Check Remedy Page Backtack shape Check the backtack Set the value for parameter No 68 to 1 0 shape If the value is set to 1 0 the rear tack will change Instruction manual 1 0 4004Q Uneven material Work clamp pressure Increase work clamp pressure feeding The standard height of the adjustment screw is 85 approximately 30 mm so tighten it further than E AE AS ONS a a a lecsaecances Work clamp When using knit material replace with the 3 work I E A AA E clamp and needle plate eee laaan Upper thread scis
127. ng the upper thread scissors opening timing 4 Set the sewing machine to the home position and then press the RESET key Check that there is no impact noise and that the motor does not go out of step when the work clamp is lowered and raised If the adjustment is not correct the work clamp may touch the upper thread trimmer driving link 2 and the roller 6 of the driving lever 5 and this may cause the motor to go out of step 5 After making this adjustment carry out 4 18 Adjusting the thread tension at the tack tension control and 4 14 Adjusting the upper thread trimming 82 HE 800A 4 ADJUSTMENT 4 5 Adjusting the needle bar height ma 0 3mm OA O K a 3972Q 4290Q 1 Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp 2 Set the needle bar 1 to its lowest position Check that the needle is in the center of the needle hole If adjustment is necessary make the adjustment while referring to 4 2 Adjusting the needle zigzag home position sensor position 3 Remove the rubber cap 2 from the face plate and then loosen the set screw 3 of the needle bar clamp 4 Insert the 1 part of the gauge 4 between the needle plate 5 and the lower edge of the needle bar 1 and touch the needle bar against the gauge Different gauges are used for each of the two specifications 2 and 3 so make sure that the gauge being
128. o the arm and then tighten the two set screws 3 of the set screw collar assembly 2 so that the upper thread trimmer fulcrum shaft 1 turns smoothly Install the rubber cap 4 from the top of the arm Install the spring hook plate 5 to the upper thread trimmer lever assembly 7 with the screw 6 Attach the spring 8 to the stop plate 9 as shown in the illustration Install the back plate 10 and the stop plate 9 to the upper thread trimmer lever assembly 7 with the two collars 11 and the two screws 12 Apply grease to the sliding surfaces Install the support stud 13 to the setting plate 16 with the nut 14 and the plain washer 15 7 Install the setting plate 16 to the upper thread trimmer lever assembly 7 with the two screws 17 and plain washers 18 8 Press fit the longitudinal feed arm pin 19 onto the longitudinal feed arm 20 and then secure it by tightening the set screw 21 9 Place the longitudinal feed arm roller 22 onto the longitudinal feed arm pin 19 and secure it with the two retaining rings 23 10 Install the roller shaft 24 to the support plate 27 with the nut 25 and the spring washer 26 11 Place the driving arm roller 28 onto the roller shaft 24 and secure it with the retaining ring 29 12 Install the support plate 27 and the stopper 30 to the trimmer driving arm 33 with the two bolts 31 and plain washers 32 ak WND O HE 800A 69 3 ASSEMBLY
129. obbin correctly and pass the lower thread through the bobbin case correctly Instruction If the bobbin is inserted back to front it will spin manual EEE EE AAE loosely and the presser lifter may go out of step Lower thread tension Reduce the lower thread tension If the lower thread tension is too strong the motor may go out of step Use memory switch No 02 to reduce the work clamp lifting speed setting to make the lifting speed slower i nstruction ae manual SR Buff this section to reduce the thread retaining resistance 4023Q HE 800A 119 5 TROUBLESHOOTING Cause Check Remedy Page Upper thread Upper thread scissors Adjust the upper thread scissors to the standard 89 scissors operation setting Work clamp home Work clamp home Adjust the work clamp home position sensor 82 position sensor position sensor position position 5 25 Lower thread is not trimmed pulls when material is removed Cause Check Remedy Page Machine stopping Rotary hook touches Adjust the needle up stop position position lower thread retainer at Retainer the stop position Inner rotary hook presser 103 4021Q Fixed knife set Fixed knife and movable Adjust the fixed knife set installation position knife do not mesh Fixed knife 96 4024Q Knife tip is bent or Repair or replace the knife 7 chipped 5 26 Feed mechanism does not operate or motor is out of step Cause Chec
130. of error E 06 and E 07 is displayed 6 Cutter home position sensor Cutter does not operate signal e Error E 08 is displayed T Feed PM overcurrent signal 8 Work clamp PM overcurrent signal 9 55V relay input signal 10 55V voltage watch signal 11 12 13 OV 14 OV 15 OV 16 OV 17 18 19 20 21 Cutter return signal 22 Cutter signal 23 Cutter signal 24 Spare solenoid 1 25 Spare solenoid 2 26 Spare solenoid 3 HE 800A 135 6 ELECTRIC COMPONENTS AND SOFTWARE 3 Circuit board connectors 1 step power supply circuit board CN1 Pin no Signal name Probable symptoms due to poor contact 1 P8V 8V e The zigzag home position can not be found 2 OV e The zigzag mechanism does not operate 3 N8V 8V e Error E 05 is displayed 4 OV Det The machine motor does not turn 5 RY out 6 OV FAULT 7 5V 8 PHOTO 9 U 10 V 11 W 12 U 13 V 14 W 15 IPM FAULT CN2 Pin no Signal name Probable symptoms due to poor contact 1 AC200 R 200V specifications e The zigzag home position can not be found 2 AC200 T 200V specifications e The zigzag mechanism does not operate 3 e Error E 05 is displayed 4 3 e The tension release solenoid does not operate CN3 Pin no Signal name Probable symptoms due to poor contact 1 AC220 R e The zigzag home position
131. oothly Install the feed cover 8 to the feed arm support 4 with the bolt 9 and the plain washer 10 Install the cam 11 to the support plate 14 with the two bolts 4 37 X 5 12 and plain washers 13 Install the support plate 14 to the feed arm 7 with the two bolts 15 and plain washers 16 Feed arm assembly 17 8 Install the feed arm assembly 17 to the feed arm support 4 with the feed arm support shaft 18 9 Tighten the set screw 19 10 Insert the spring 21 into the work clamp assembly 20 and then install the work clamp assembly 20 to the feed arm assembly 17 with the shoulder screw 22 11 Install the feed arm support 23 and the opening cam assembly 24 to the feed arm assembly 17 with the to screws 25 on NOS HE 800A 53 3 ASSEMBLY 3 6 Bobbin presser mechanism 4197Q 4198Q E P 11 7mm S 7 ony Ke E Pea 5 Approx 12 5mm 10 a 8 9 ws ONE g 8 E oy 4199Q 4200Q ONDA Install the spring hook U 1 to the bobbin presser bracket 2 Install the screw 3 and nut 4 to the bobbin presser bracket 2 At this time install the screw 3 so that the length shown in the illustration is 11 7 mm Install the bobbin presser 5 to the bobbin presser bracket 2 with the set screw 6 At this time install so that the end of the bobbin presser 5 is at the center of the bobbin c
132. oulder screw 8 and then remove the auxiliary plate 7 and the opening plate 3 5 Loosen the set screw 9 and then remove the bobbin presser 10 from the bobbin presser bracket assembly 6 Remove the screw 11 and the nut 12 Remove the spring hook U 13 HE 800A 41 2 DISASSEMBLY 2 20 Feed mechanism 1 4148Q 4149Q 4150Q 1 Remove the four screws 1 and washers 2 and then remove the four cord holders 3 2 Disconnect the cords for the feed pulse motor 4 DC fan motor 40 assembly 5 and feed home position sensor 6 3 Remove the two screws 7 and plain washers 8 and then remove the feed sensor support plate 9 4 Remove the screw 10 and then remove the feed home position sensor 6 from the feed sensor support plate 9 5 Remove the two screws 11 and then remove the feed motor cover 12 6 Remove the two screws 13 and then remove the DC fan motor 40 assembly 5 from the feed motor cover 12 42 HE 800A 2 DISASSEMBLY 4151Q 4154Q 38 4153Q 4156Q 7 Remove the two bolts 14 and then remove the belt holder 15 from the feed arm support 16 8 Remove the nut 17 and then remove the bolt 18 9 Remove the three screws 19 and plain washers 20 10 Loosen the two set screws 21 and then remove the pulley A assembly 22 11 Remove the four bolts 23 and then remove the motor mounting bracket 24 from the
133. oulder screws 11 and 12 are linked to the cam groove in the upper thread trimmer driving link 8 so that when the upper thread trimmer driving link 8 moves in the direction of the arrow the trimmer driving levers 9 and 10 operate When the trimmer driving levers 9 and 10 operate the longitudinal feed arm 15 and trimmer driving arm 16 that are secured to the trimmer driving levers 9 and 10 move in the direction of the arrow When the longitudinal feed arm 15 operates the upper thread trimmer lever 18 that is attached to the longitudinal feed arm roller 17 at the end of the longitudinal feed arm 15 moves back and forth When the trimmer driving arm 16 operates the driving arm roller 19 that is installed to the trimmer driving arm 16 rolls along the cam groove in the upper thread trimmer lever 18 and the upper thread trimmer lever 18 rotates centering on the upper thread trimmer fulcrum shaft 20 8 The setting plate 21 is secured to the end of the upper thread trimmer lever 18 and so the movement is transmitted to the upper thread trimmer assembly 22 that is secured to the setting plate 21 9 Upper thread trimmer M 23 that is installed to the upper thread trimmer assembly 22 comes into contact with the work clamp so that upper thread trimmer M 23 closes and cuts the thread HE 800A 13 1 MECHANICAL DESCRIPTIONS 1 10 1 Upper thread scissors 4060Q Figur
134. pring tension or shorten spring tension and stroke the stroke to such a degree that does not cause Instruction double hooking Adjust it while checking bar tacking manual stitches 104 5 TROUBLESHOOTING ojll e_________ Cause Check Remedy Page Rotary hook Needle bar height and Adjust the needle and hook timing needle bar lift amount 1 Adjust the needle bar height to 1 on the gauge 83 2 Adjust the needle bar lift amount to 2 on the gauge Gap between needle and Adjust the gap between needle and rotary hook to rotary hook 0 01 0 08 mm Adjust to as large as possible without causing skipped stitches to occur 84 Check that rotary hook point does not strike needle in zigzag motion Rotary hook lubrication Too small quantity of lubrication oil will cause thread breakage Adjust the quantity of lubrication 102 oil 77 The lubrication holes between rotary hook and Jaa a d TOCA hook joint do not match up 2 292 pete e Thread twisted around Remove any twisted thread from the inner and rotary hook rotary hook 7 Upper thread amount Arm thread guide position Adjust the arm thread guide position ee manua Bobbin case Damaged outside of Polish with buff or replace the part bobbin case and bent Use the HE 800A bobbin case bobbin holder spring etc 5 2 Skipped stitches Cause Check Remedy Page Needle Needle facing As viewed fro
135. r 14 into the arm and then pass it through the oil rejector 15 and the presser bar guide bracket assembly 5 6 Position the needle bar guide 12 so that the presser bar 14 moves smoothly and then tighten the two screws 13 7 Tap in the rubber cap 16 8 Install the presser roller bracket 10 to the presser bar 14 with the screw 17 9 Connect the presser bar guide bracket assembly 5 and the knee lifter lever 18 with the shoulder screw 19 10 Place a 10 mm gauge 21 underneath the work clamp 20 11 Turn on the power and after the mechanism moves to the home position check that the setting for memory switch No 05 work clamp height at neutral position is 10 mm If it is not set to 10 mm set it to 10 mm 12 While pushing the presser bar 14 down from above tighten the set screw 4 so that the roller 6 is not at an angle to the V shaped groove in the presser arm 22 13 Remove the gauge 21 and turn off the power 14 Insert the spring guide 23 compression spring 24 and plain washer 25 and with the presser adjusting screw 26 at a height of 30 mm tighten the presser adjusting nut 27 oR WD 68 HE 800A 3 ASSEMBLY 3 20 Upper thread trimmer mechanism 4252Q 4253Q 9 ge 8 o S iS o 2 Apply grease to 1 Ne aaa 19 Apply grease to 23 fo 3 lt i gn edges 22 4254Q 4255Q Insert the upper thread trimmer fulcrum shaft 1 int
136. rating force upper thread trimmer M to open when the projection is pressed with a force of 4N or less 4010Q 114 5 TROUBLESHOOTING Cause Check Remedy Page Longitudinal feed Installation position of the Move the upper thread trimmer driving link so that it arm longitudinal feed arm stops at the face plate In this position tighten the bolts so that the small slot in the upper thread trimmer lever and the edge of the washer are aligned Aligned 5 a 90 D Upper thread trimmer lever Washer 4011Q Needle bar height in Upper shaft pulley Adjust the needle up sensor position machine stopped stopping position 103 condition Cam Upper thread scissors Adjust so that the cam opens the stop plate properly 95 opening timing Opening cam Upper thread scissors Adjust the timing so that the upper thread scissors gradual opening timing gradually start opening when the feed mechanism 94 EEE EE EE Moves aboni io Zomm na a cas cal catia ep Upper thread scissors Apply grease to the inclined face of the opening 94 operation cam Work clamp home Work clamp home After setting the sewing machine to the home position sensor position sensor position position press the RESET key and then adjust the distance between the upper thread trimmer and the center of the needle when the work clamp is lowered to 5 5 6 0 mm 82 95 4012Q Upper thread trimmer Upper thread trim
137. re in 1 10 Upper thread trimmer mechanism When the treadle is depressed forward again to the 2nd step C the work clamp moves to the home position Note If the work clamp is not at the home position the check code cannot be changed C 09 The buzzer sounds for one second and then the work clamp lifts by 13 mm When the treadle is depressed forward again to the 2nd step C the work clamp moves to the home position Note If the work clamp is not at the home position the check code cannot be changed This function can be used to make fine adjustments to the position of the work clamp Refer to 4 14 5 Adjusting the cutting depth of the upper thread scissors HE 800A 147 6 ELECTRIC COMPONENTS AND SOFTWARE 6 9 Error code table A DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury If a malfunction should occur with the sewing machine a buzzer will sound and an error code will appear in the display window Follow the remedy procedure to eliminate the cause of the problem For errors which do not require the power to be turned off i e errors which can be reset two short beeps will sound For error E 02 three short beeps will sound For errors which require the power to be turned off i e errors whic
138. rlay is being sewn Use parameter number 52 to reduce the underlay sewing start pitch to about 0 5 Use parameter number 48 to reduce the underlay instruction sewing speed manual If sewing knitted wear the upper thread may get caught easily so you may need to process the end of the thread Bar tack Straight bar tacking is When carrying out straight bar tacking the upper being carried out thread may get caught easily so you may need to process the end of the thread 5 23 Work clamp is not raised 1 Pulse motor stepping sound cannot be heard Cause Check Remedy Page Work clamp _ lifting Check the work clamp Change the settings of memory switch Nos 04 05 Instruction height setting lifting height setting 06 manual Treadle Does the work clamp rise If it rises use memory switch No 08 to adjust the n when the treadle is threshold value for lowering the work clamp to a mantal depressed backward positive value Presser lifter pulse motor Cord connection Presser lifter pulse motor driving gear Check the cord connections and contacts Check if the drive gear screw is loose 118 5 TROUBLESHOOTING 5 24 Work clamp is not raised 2 Pulse motor stepping sound can be heard Cause Check Remedy Page Machine stopping Rotary hook touches Adjust the needle up stop position position lower thread retainer at Retainer the stop po
139. se un der any circumstances as they can cause vomiting and diarrhoea Keep the oil out of the reach of children Maintenance and inspection S Maintenance and inspection of the sewing machine should only be carried out by a qualified technician Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system Turn off the power switch and disconnect the power A cord from the wall outlet at the following times otherwise the machine may operate if the treadle is depressed by mistake which could result in injury e When carrying out inspection adjustment and main tenance e When replacing consumable parts such as the ro tary hook Turn off the power switch before inserting or removing the plug otherwise damage to the control box could result If the power switch needs to be left on when carrying out some adjustment be extremely careful to observe all safety precautions A Use both hands to hold the machine head when tilting it back or returning it to its original position If only one hand is used the weight of the machine head may cause your hand to slip and your hand may get caught Use only the proper replacement parts as specified by Brother If any safety devices have been removed be abso lutely sure to re install them to their original positions and check that they operate correctly before using the machine Any problems in machine operat
140. sion stud 9 4 Remove the collar 10 and then remove the two tension discs 11 tension disc pressers 12 and 13 from the tension stud 9 5 Remove the sub thread tension assembly 14 and the tension release pin 15 from the arm 6 Remove the two tension discs 16 tension disc pressers 17 and 18 tension adjusting spring 19 washer 20 and tension nut 21 from the sub tension stud 22 7 Remove the screw 23 and the washer 24 and then remove the thread take up lever assembly 25 from the tension release shaft 26 8 Remove the shoulder screw 27 and then remove the washer 28 from the arm 9 Remove the screw 29 and the washer 30 and then remove the lever 31 from the adjusting lever 32 10 Remove the two shoulder screws 33 and then remove the adjusting lever 32 and the tension take up lever 34 from the lever link 35 11 Remove the screw 36 and then remove the thread guide cover 37 and the arm thread guide L 38 40 HE 800A 2 DISASSEMBLY 2 19 Bobbin presser mechanism 4145Q 3 2 Ss D SS SC OPE 8 7 UO 6 4146Q 4147Q 1 2 3 Remove the shoulder screw 5 and then remove the bobbin presser bracket assembly 6 and the auxiliary 4 6 7 Remove the two extension springs 1 Remove the shoulder screw 2 and then remove the opening plate 3 from the rotary hook cover 4 plate 7 Remove the sh
141. sition i nner rotary lt hook presser by 103 ce 4021Q Work clamp lifting Work clamp lifting speed Use memory switch No 02 to retard the work clamp Instruction speed is too fast setting lifting speed manual Upper thread Interference between Check the standard adjustments with the upper scissors upper thread scissors and thread scissors removed 93 ANON clamp d Be particularly careful when sewing joints Upper thread scissors Apply grease to the inclined face of the opening 94 operation cam Lower thread trimmer Interference between Repair or replace the parts fixed knife set lower Lower thread thread clamp lower trimmer link A assembly thread presser and lower thread retainer Lowsrthreag trimmer connecting rod f S Remove the shoulder screw to check 4022Q Rubbish dust or thread Remove all rubbish dust and thread scraps fromthe scraps present lower thread trimmer Loose screws Check for loose screws in Securely tighten all screws the upper thread trimmer lower thread trimmer and work clamp lifter mechanisms Work clamp _ lifting Check the work clamp Change the settings of memory switch Nos 04 05 height setting lifting height setting 06 If the work clamp lifting height is too high the lower Instruction thread trimming operation will not be timed manual together with the work clamp rising and the pulse motor may go out of step Threading Lower thread threading Insert the b
142. sm 4071Q 1 Remove the two screws 1 and then remove the rotary hook holder 2 2 Loosen the two set screws 3 and then remove the rotary hook 4 3 Loosen the two set screws 5 and then remove the rotary hook joint assembly 6 from the lower shaft 20 HE 800A 2 DISASSEMBLY 2 3 Lubrication mechanism 1 2 3 1 Rotary hook lubricating mechanism 4072Q 4073Q cmp Suge Om er Fh 1 2 5 1 11 10 4074Q 4075Q 1 Remove the spring 1 and the screw 2 and then remove the rubber presser 3 from the bed 2 Remove the wicks 4 and 5 from the felt support 6 3 Remove the two screws 7 and then remove the felt support 6 from the bed 4 Remove the end of the felt 8 from the bush 9 5 Remove the spring 10 and the collar 11 from the bush 9 6 Remove the wick 5 from the collar 11 HE 800A 21 2 DISASSEMBLY 2 3 2 Plunger pump mechanism lt 2 4 w SO 14 ae lt o oO _ a F a a E 21 Sac 4076Q 4077Q Remove the three screws 1 and then remove the oil filter bracket 2 from the bed Remove the oil tube 3 that is connected between the plunger and the filter from the oil filter bracket 2 Remove the two springs 4 and the two screws 5 and then remove the pump filter 6 from the oil filter bracket 2 4 Remove the two cord holders 7 screws 8 and plain washers
143. sm HE 800A 95 4 ADJUSTMENT 4 15 Adjusting the lower thread trimming 4 15 1 Adjusting the lower thread trimmer fixed knife engagement amount Approx 7 Lower thread trimming complete 4342Q 4343Q 1 With the power turned off move the lower thread trimmer cam lever 1 in the direction of the arrow so that the knife driving lever 2 is in the position shown in the illustration 2 Check that the cam A of the movable knife 3 is sitting securely on top of the cam B of the base plate 4 3 Loosen the two screws 5 and then adjust so that the fixed knife 6 and the movable knife 3 are engaged by approximately 1 mm If the engagement amount is too small the lower thread may not be fully cut and the material may get caught when it is removed after sewing 4 15 2 Adjusting the lower thread retaining amount Smaller 4344Q 4345Q 1 Turn on the power and set the sewing machine to the home position 2 Loosen the two screws 1 and then adjust the lower thread retainer 2 to a distance of 1 2 mm as shown in the illustration If the lower thread retaining amount has been reduced check that the roller B of the lower thread clamp plate 3 is sitting securely on top of the lower thread retainer cam A If the lower thread is pulling up at the first stitch at the sewing start check if the lower thread is not being pulled out of the lower thread clamp plate 3 and that it is
144. sors Adjust to an appropriate opening timing 94 95 OPENING UMING o aa aa aana iatea aa hls Matra ot ea aada deraan Ka Upper thread scissors Apply grease to the inclined face of the opening 94 operation d SA E E E E Lower thread clamp Adjust so that the lower thread clamp plate opens 97 opening timing when the feed mechanism moves 6 7 mm 5 11 Uneven seams 9 Sticking in needle plate Front and rear tack sections of material gets stuck in needle hole Cause Check Remedy Page Start backtack Number of start backtack Use parameter number 40 to reduce the number of stitches stitches in the front tack Instruction If the material is soft it can be effective to set the manual number of stitches to 0 Rear tack Rear tack vector shape Use parameter number 37 to set the rear tack vector shape to a rectangle instructi Setting the vector shape to a rectangle can be pan effective when the width is less than the bar tack width Needle plate Needle plate When using knit material replace with the 3 needle plate Replace with a needle plate with a smaller needle hole HE 800A 109 5 TROUBLESHOOTING 5 12 Uneven seams 10 All stitches Cause Check Remedy Page Threading Upper thread threading Thread the upper thread correctly penne manua Lower thread threading Thread the lower thread correctly pesky manua Thread path Flaw or abrasion on t
145. t 8 to stop them from coming out 4 Pass the wick 9 through the tube support U 10 and push it firmly into the upper shaft lubrication hole 5 Pass the wick 11 through the tube support U 10 and push it firmly into the zigzag lever shaft lubrication hole 6 Install the tube support U 10 with the screw 12 7 Pass the oil tube 13 around the outside of the tube support U 10 as shown in the illustration 72 HE 800A 3 ASSEMBLY 3 22 2 Needle zigzag mechanism 4266Q 4267Q 1 Pass the oil tube 1 through the tube support U 2 and the tube support 3 and then secure the tube support 3 with the screw 4 2 Install the felt support assembly 5 to the motor bracket 10 with the screw 9 so that the felt 6 of the felt support assembly 5 is gently touching the felt 8 of the zigzag connecting rod 7 3 Pass the oil tube 1 around the outside of the tube support U 2 as shown in the illustration so that it does not touch the solenoid stopper 11 and then pass it in between the cutter solenoid 12 and the arm HE 800A 73 3 ASSEMBLY 3 22 3 Oil terminal mechanism 4268Q 4270Q O 3 Push into the groove 4269Q won 4271Q 1 Pass the wick 2 through the collar 1 and then insert it into the oil terminal 3 Push the wick 2 firmly enough into the groove as shown in the illustration 2 Insert the packing 4 into the oil terminal 3 and then install t
146. t amount including the play in the work clamp 1 and the pin 3 to 10 mm If it is set to more than 10 mm the work clamp will start lifting before lower thread trimming is complete which may result in thread trimming errors Furthermore it may also cause the presser foot lifter pulse motor to go out of step HE 800A 85 4 ADJUSTMENT 4 10 Adjusting the work clamp lateral position A KYAT we 4300Q 4299Q 1 Loosen the set screw 1 and then move the feed arm 2 and the roller 3 to adjust so that the knife groove comes to the center of the work clamp window 2 Operate the treadle and check that the work clamp moves up and down smoothly After adjusting check the upper thread trimmer mechanism and adjust if necessary 4 11 Adjusting the cutter home position sensor position Loosen the screw 3 and then adjust the cutter sensor setting plate 4 so that there is a clearance of 4 5 0 5 mm between the side of the cutter sensor 1 and the edge of the solenoid stopper 2 4301Q 86 HE 800A 4 ADJUSTMENT 4 12 Adjusting the cutter installation position Pulled forward 4302Q 4303Q Adjust so that the upper thread scissors 2 and the cutter 1 do not touch when the cutter 1 is pushed down by hand If the upper thread scissors 2 extends below the cutter 1 pull the stop plate 3 forward and move the upper thread scissors 2 to the left
147. tch analog value the value becomes larger and when it is depressed backward the value becomes smaller The neutral position is set to 78 3 at the time of shipment from the factory 146 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE 6 8 Output check list Use the following procedure when checking for PCB related failures mechanism breakdown and cord breakage It can be checked as to whether signals that the CPU correctly output have been received 4377Q 1 Turn on the power while pressing the parameter DOWN key 1 All mode indicators will switch off __ will be brother amp Qa PROGRAM NO OLO CUTTER ON displayed in the program No LED 2 and ___ _ will be displayed in the parameter display LED 3 2 Depress the treadle to the 2nd step C The machine will start to detect the home position and then output check mode will start The check code will appear in the parameter display LED 3 3 Press the parameter keys 1 and 4 to select the desired check code 4 Depress the treadle to the 2nd step C Oo iO POWER o f caution o AUTO off TEST FEED 0 MANUAL 0 PROGRAM v SELECT The operation corresponding to the check code will be carried out while the treadle is each time the being depressed forward treadle is depressed forward for check codes C 08 and C 09 5 When returning to normal operation turn power off an
148. ted and that there is no contact failure between pins and wires before starting troubleshooting procedures 6 4 1 Connector positions Main circuit board P16 C NPM P19 P2 OPSOL P15 AC17 AC30V DC300V L Fane 2 O Hee P22 EXPAND1 P14 P4 AC18V PANEL P23 P13 EXPAND2 FAN12 P7 P11 P10 P9 PEDAL P6 ORG HEAD HPEDAL L POWER C 4370Q Sub circuit board P10 FAN1 OOC LC P12 P9 P7 P4 P3 P1 FAN2 OPSEN1 OPSEN2 VALV PER EXP1 P13 EXP2 P11 P8 P6 P5 P2 OPSOL CUTTER POWER FTPM FDPM 4371Q HE 800A 125 6 ELECTRIC COMPONENTS AND SOFTWARE 1 step power supply circuit board CN6 5K Ld CY Til CN4 CN3 CN2 T CNS 1 1 4372Q P1 POWER 4373Q Panel PCB P1 PANEL 4374Q 126 HE 800A 6 ELECTRIC COMPONENTS AND SOFTWARE 6 4 2 Signal names for connectors and probable symptoms due to poor contact 1 Circuit board connectors Main circuit board P1 FAN2 Pin no Signal name Probable symptoms due to poor contact 1 24V e The inside air circulation fan does not operate 2 FAN2 signal e Error E 41 is displayed 3 OV P3 SYNC Pin no Signal name Probable symptoms due to poor contact 1 5V e The machine motor does not turn 2 Encoder signal e A machine stopping error occurs 3 Needle up stop posi
149. the cutter or press any objects against the machine while sewing as this may result in personal injury or damage to the machine Do not touch any of the fan or press any objects against the machine as this may result in personal injury or damage to the machine E d eT g i ye guar En Ss g lt ES Finger guard HE 800A Safety devices Eye guard Finger guard Thread take up cover Belt cover Belt cover plate etc 6 High temperature warning display Direction of operation r Thread take up cover Belt cover Belt cover plate 1 N CONTENTS MECHANICAL DESCRIPTIONS s eeeeeeees 1 1 1 Needle bar and thread take up mechanisms ee ee ee ee ee ee 1 1 2 Upper shaft lower shaft and rotary hook mechanisms ee ee ee ee 2 1 3 Needle zigzag mechanism s s tt ttt ttt ttre 3 1 4 Presser foot lifter mechanism ttttttttrttes 4 1 5 F Feed mechanism ee ee ee ee ee 5 1 6 i Cutter mechanism ee ee ee ee ee ee ee 6 1 7 Thread breakage detection mechanism 7 1 8 r Lubrication mechanism See ee ee ee 8 1 8 1 Lower shaft and rotary hook lubrication 9 1 9 Tension release mechanism s tttttttttes 10 1 10 Upper thread trimmer mechanism etete 12 1 10 1 Upper thread scissors trtttttttttee 14 1 11 Lower thread trimmer mechanism 16 DISASSEMBLY eee eee ee ee ee ee ee 19 2 1 Covers ee ee ee ee ee 19 2 2 Rotary hook mechanism ee ee ee e
150. the notched part of needle faces a ETA EEE E E E eee frontward i aa ient ne a ded eaa tease Needle installation height Insert the end of the needle shank so that it touches 7 Bee epee eee een the top edge of the needle hole of the needle bar Bent needle d Replacengedle n t a a eree ctl ender cae Blunt needle tip or burr Replace needle l ha en Nyt leet aaan Needle and thread Replace needle that fits the thread Threading Upper thread threading Thread the upper thread correctly peng manua Lower thread threading Thread the lower thread correctly piloted manua Thread path Flaw or abrasion on the Polish with buff or replace the part thread path Especially pay attention to finishing around needle plate hole O ees O i eS Needle plate hole 3996Q Flaw on the rotary hook Polish with buff or replace the part point and rotary hook PAJE cote pth tel eet a NA ddan Weal etter a leeches Flaw on the rotary hook Polish with buff or replace the part holder ot Check flaw here L x i P Adjust the rotary hook 85 Pi overlap amount E 3997Q Thread tension Zigzag thread upper Adjust the upper thread tension appropriately Instruction Bib eN L EA A E E AE AE A ORY A T Bar tack thread upper Adjust the upper thread tension while checking nekud thread tension stitches The stitches on top are the upper thread AE and the stitches underneath are the bobbin thread Thread take up Thread take up spring Loosen the thread take up s
151. tion signal e One of error E 02 E 62 E 63 and E 64 is displayed 4 Needle down stop position signal 5 OV P4 PANEL Pin no Signal name Probable symptoms due to poor contact 1 5V e The operation panel does not operate 2 OV 3 KEYO 4 KEY1 5 KEY2 6 OC 7 A 8 B 9 C 10 D 11 E 12 F 13 G 14 STB 15 P8V 16 SENSOR 17 BUZZER 18 OV 19 OV 20 OV HE 800A 127 6 ELECTRIC COMPONENTS AND SOFTWARE P6 POWER Pin no Signal name Probable symptoms due to poor contact 1 P8V 8V e The power indicator of operation panel does not illuminate 2 OV e The machine motor does not turn 3 N8V 8V 4 OV det 5 RY out 6 OV FAULT 7 5V 8 PHOTO 9 U 10 V 11 W 12 U 13 V 14 W 15 IPM FAULT P7 PEDAL Pin no Signal name Probable symptoms due to poor contact 1 P8V 8V The home position can not be found 2 PEDAL signal e Work clamp does not operate 3 OV e The machine does not operate 4 N8V 8V e One of error E 30 E 31 and E 32 is displayed P9 HPEDAL Standing operation pedal option Pin no Signal name Probable symptoms due to poor contact 1 P8V 8V e The home position can not be found 2 Work clamp FORSW signal e Work clamp does not operate 3 Backward BAKSW signal e The machine does not operate 4 OV e One of error E 30 E 31 and E 32 is displayed 5 Spare INCHSW sign
152. tments Turn on the power and set the sewing machine to the home position Then press the RESET key to lower the work clamp before carrying out adjustments AdJ will appear in the parameter display LED and the machine will not operate even if the treadle is depressed Some items are adjusted without the RESET key being pressed Carry out the adjustment by following the explanations given When turning off the power to make adjustments Do not force any of the parts to move as doing so may result in damage to the parts e Be sure to turn the machine pulley to raise the needle bar to its highest position before making adjustments If this is not done the pulley position the direction of rotation of the rotary hook may cause the lower thread trimmer mechanism to touch the rotary hook when the lower thread trimmer mechanism operates e When turning the machine pulley do it at a position where the thread trimmer mechanism will not operate the position where the presser foot lifter pulse motor is at the home position If the machine pulley is turned at a position where the thread trimmer mechanism operates the needle may touch the lower thread trimmer mechanism lower thread retainer and lower thread trimmer knife If the machine pulley is turned at a position where the thread trimmer mechanism operates the rotary hook and the lower thread trimmer mechanism may touch e When moving the feed mechanism do it at a position where the thre
153. trimmer i Cutter Clearance between Install the cutter so that the clearance between the needle bar and cutter needle bar and the cutter is 0 3 mm The cutter release section of the needle bar should be at a right angle to the cutter 0 3 mm O K 83 N G 4016Q 5 18 Imperfect cutter function imperfect material cutting Cause Check Remedy Page Cutter Installation position of Install the cutter so that its edge is aligned with the 88 GNA e eeror nenten top of the needle plate i aaaaaaaaaaa00000000000 ahaaa Cutter blade If blade is worn or chipped sharpen it or replace it Instruction PEENES A Replace with the special needle plate optional __ __ manuak Damage to cutter Replace any parts that are damaged mechanism parts Tighten any loose screws F Loose screws Cutter solenoid Check for a disconnected Connect the cords f cord Cutter power Memory switches If the material is heavy and difficult to cut use 3 Instruction memory switch No 00 to increase the cutting force manual of the cutter 116 5 TROUBLESHOOTING Cause Check Remedy Page Solenoid stopper ENUE oSeseeesenat ene sAtcll Check if the nut is loose and tighten it securely r Cutter sensor position Adjust the cutter sensor position Check if the mounting screws are loose and tighten them securely 4 5 0 5 mm 7 Cutter sensor 86
154. two O rings 13 into the shafts of trimmer driving levers 12 from the outside of the arm and fit them into the hollow in the arm 6 Insert the pin of the tension release driving lever 14 into the cam grove in the lifter lever assembly 10 and then insert into the arm 7 Install the O ring 16 to the tension release shaft 15 and then insert into the arm 8 Insert the tension release cam 17 into the tension release shaft 15 Pass the tension release shaft 15 through the tension release driving lever 14 and install the retaining ring 18 9 While pushing the tension release shaft 15 in the direction of the arrow A and also pushing the tension release driving lever 14 in the direction of the arrow B tighten the set screw 19 on the screw flat of the tension release shaft 15 10 Install the tension release cam 17 with the set screw 20 11 Install the lifter lever assembly 10 using the lifter shaft 21 plain washer 22 and retaining ring 23 to the arm and then tighten the set screw 24 12 Install the driving lever roller 25 and the ball bearing 26 to the trimmer driving levers 12 with the two shoulder screws 27 13 Install the presser lifter connecting rod set 6 to the arm with the lifter shaft A 28 and the set screw 29 HE 800A 57 3 ASSEMBLY 3 10 Presser lifter mechanism 2 10 a 1 0 0 3mm 4216Q 4217Q 1 Install the motor lever 2 to the p
155. uce the slow Instruction speed manual Slow start stitches Use parameter number 59 to increase the number of Instruction slow start stitches manual Bar tack thread Bar tack thread tension is Make the bar tack tension as weak as possible 100 tension too strong Upper thread Upper thread breaks Refer to 5 1 Upper thread breakage 104 105 breakage 112 5 TROUBLESHOOTING Ee 5 14 Unraveling of thread trimmed by upper thread trimmer assembly Cause Check Remedy Page Upper thread trimmer Installation position of Adjust the installation position of upper thread assembly upper thread trimmer trimmer assembly by moving the setting plate assembly assembly Upper thread trimmer longitudinal position adjust ment Upper thread trimmer cutting depth adjustment 91 92 Burr on tips of upper Polish with buff or replace the part thread trimmer M and upper thread trimmer U 5 Check burr on upper S side here A Check burr here 7 gt 4009Q Tension release Opening amount of Adjust the zigzag tension discs by moving the timing zigzag tension discs and tension stud bracket in and out bar tack tension discs Adjust the bar tack tension discs opening amount particularly zigzag to 0 5 1 0 mm by removing the top cover and tension discs moving the tension release cam mg 100 rA Zigzag tension Tack tension IB 1mm 4008Q Work clamp Work clamp lifting speed Use memory switch No 0
156. ulse motor N assembly for needle zigzag 1 with the two set screws 3 so that the dimensions are as shown in the illustration 2 Install the gear 5 to the pulse motor FT assembly for presser lifter 4 with the two set screws 6 so that the dimensions are as shown in the illustration 3 Install the pulse motor N assembly for needle zigzag 1 and the pulse motor FT assembly for presser lifter 4 to the motor bracket 9 with the four bolts 7 and the three bolts 8 so that the directions of the cords are as shown in the illustration Motor bracket assembly 10 58 HE 800A 3 ASSEMBLY 3 11 Presser lifter mechanism 3 4128Q 4219Q 3 14 ak a L 13 n SS xX L pply grease 17 S e 16 A s y g arg ar 42 eo o ae OG Wee 10 A P SS Apply grease to 10 a 4218Q 4124Q 1 Insert the two linear ball bearings 1 into the guide bracket 2 2 Provisionally install the bearing holder 3 with the bolt 4 3 Pass the two guide shafts 5 through the motor bracket assembly 6 and the guide bracket 2 and then tighten the four set screws 7 4 Provisionally install the presser driving arm 8 to the guide bracket 2 with the four bolts 9 5 Securely tighten the bolt 4 6 Insert the washer 11 into the driving arm presser 10 and then pass it through the presser driving arm 8 and insert into the motor bracket assembly 6 Prov
157. urn off the power supply before changing any of the DIP switch settings Any changes to the DIP switch positions will not be effective until the power is switched off and back on again Circuit board DIP switch 1 rANMTWO ONO dodo OFF Move the switches properly No ON OFF Setting items Default ON 1 OFF OFF ON 2 OFF OFF ON FF OFF g ON 4 FF OFF ON FF OFF ON FF j OFF a 7 ON Three warning Bee OFF OFF Continuous warning beep Zigzag motor energization is turned off during pauses or ON 8 when a thread breakage occurs OFF Zigzag motor energization is not turned off during pauses or OFF when a thread breakage occurs HE 800A 141 6 ELECTRIC COMPONENTS AND SOFTWARE Circuit board DIP switch 2 Note Move the switches properly No ON OFF Setting items Default 4 ON Pedal for standing operation OFF OFF Pedal for seated operation 2 ON Starting possible only when work clamp is lowered OFF OFF Starting possible regardless of work clamp position During standing pedal operation the work clamp lowers only ON i i 3 while the work clamp pedal is being depressed OFF During standing pedal operation the work clamp keeps OFF j lowering when the work clamp pedal is released ON 4 OFF OFF ON 5 OFF gt OFF N 100V 110V
158. ushion 11 to the cutter solenoid 12 It is installed at the time of shipment from the factory 9 Install the solenoid stopper 13 to the solenoid plunger with the spring washer 14 and the two nuts 15 as shown in the illustration 10 Install the cutter solenoid 12 to the cutter solenoid bracket 17 with the three bolts 16 At this time install so that the oil tube 18 passes underneath the cutter solenoid bracket 17 11 Provisionally tighten the bolt 20 to the cutter link bracket assembly 19 12 Install the cutter driving link 21 to the cutter link shaft 24 with the washer 22 and the retaining ring 23 13 Insert the shaft of the cutter link bracket assembly 19 to the hole in the cutter driving link 21 14 Insert the solenoid plunger into the cutter link bracket assembly 19 and then tighten the bolt 20 so that the end of the solenoid plunger is aligned with the edge of the cutter link bracket assembly 19 15 Install the cutter solenoid bracket 17 to the arm with the four screws 25 16 Check that the plunger of the cutter solenoid 12 moves easily 17 Insert the oil tube 18 and the cord of the cutter solenoid 12 in between tube support U 26 and the arm HE 800A 61 3 ASSEMBLY 3 14 Cutter mechanism 2 4228Q 4229Q Align edges 5mm 4230Q 4231Q Insert the cutter driving shaft 1 into the arm from the top and then pass it through the holes in the f

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