Sharp CE-150 Service manual - Color graphic printer - PC
Contents
1. Replace rotary holder Replace paper holding roller support plate unit Replace electromagnet and repair drive circuit Replace with a pen having the standard length 23 3 9 mm Adjust the gap by turning the mounting screw on the electromagnet unit 4 1 Recharge to normal voltage Replace electromagnet unit Manually maintain electro magnet actuator in the energized position rotate rotary holder in a counter clockwise direction and fix it in its proper position e Exchange ejection lever ejection lever shaft unit Oju 009 Ld MMMY d WY Je OOGL Od dieys jnoge asow pue jiy iii Od Siu ajes jou og LZ 2 Electromagnet operates normally 1 Pen moves to color change area without moving up 2 Carriage does not move until it reaches the left edge 5 Color does not Change 3 Rotary holder does not rotate at all 1 Pen movement is slow 2 Deformation and fatigue of pen return spring 4 5 3 3 Paper is not winding on rubber roller properly 4 Pen is too long 1 Electromagnet induced pen up function is ab normal 1 Foreign matter has ac cumulated in slider section 2 Contact between slide shaft support plate 4 5 5 and frame 1 Fatigue and deformation of color change bar 4 7 2 Pen tip has come off the return spring Check the shape of the pen Also check for rotary holder deformation and the presen of foreign matter Inspect the pen2. All and more about Sharp PC 1500 at http Awww PC 1 500 info Parts Symbol Parts to be Reasse mbled Precautions for Reassembly Y Idle Gear Type E Stopper Ring Insert the Y idle gear after moving the paper feed gear by one tooth REL Recommend to engage after mark ing the tooth tip and moving the gear by one tooth Hang the motor cover by its square hole on the hook on the paper guide B on the rear of the frame Motor Cover unit H R A eo Ws L T Ejection Lever Shaft Unit Insert the ejection lever shaft unit i Ejection Lever into the frame through a bearing RE2 Type E Stopper Ring hole and press in the coupling lever from outside the frame Pen Take out Lever Unit Pen Take out Lever Spring Type E Stopper Ring 4 7 SP1 4 x 1 6 Color Change bar Cross recessed Pan Head Machine Screws Screws may be coated with lock paint Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1500 info Yr mbly Parts to be Reassembled Precautions for Reassembly Slider Unit Slider Shaft A Slider Shaft B Type E Stop Ring Never bring another magnet close to the slider unit magnet If you do the magnet inside the slider unit demagnetizes causing the color detection switch to operate incorrectly Electromagnet Unit Cross recessed Pan Head Machine Screws Lock Washer Flat Wafer Assembly
3. Condition Compare the trouble with this column and verify whether it coincides 3 Cause Causes bassed on the condition of the trouble are listed Verify the cause Use the repair level described above when making repairs after fully considering the repair level 4 Locations and Methods of Checking The column lists where to check for trouble and by what method Check according to the instructions in this column and locate the trouble 5 Repair Method Repair the trouble according to the instructions described in this column If the same phenomenon or conditions exist after making repairs check the other items in the cause column and make necessary repairs 3 Repair Tools Screwdrivers Precision Screwdrivers Phillips Type 4 equivalent to No 000 Phillips Type 5 equivalent to No 00 Flat blade Type 5 ET Holders E Ring ET 2 ET 1 5 ET 12 e Radio pliers or reed pliers Tweezers e Soldering iron Do not sale this PDF a BL iii JOd Siu ajes jou og es e y e Does not draw lines 2 Lateral lines cannot be drawn X motor 2 1 Y motor 3 1 and pen drive electro magnet 4 1 operate normally but no printing is done 1 X motor 2 1 does not rotate 2 Abnormality is noticed regardless of whether the pen is moving up or down Pens 5 1 to 4 have come off or the ink is exhausted 1 X motor lead wire is cut 2 Idle gear 2 2 is defor med 3 Defo
4. _ SHARP SERVICE MANUAL Color graphic printer www PC 1500 INFO SHARP CORPORATION Do not sale this PDF W G dG Ln E Whe All and more about Sharp PC 1500 at http www PC 1500 info SERVICE MANUAL DPG 1301 COLOR GRAPHIC PRINTER CE 150 Printer TABLE OF CONTENTS Page SPEATURES AND GUENER ss tate Aoa l SFEGIFICATIONS Z nario mien T WIE Ea EEE SE A l MECHANISM AND OPERATION ee Arens E a 6 4 DISASSEMBLY AND REASSEMBLY lt Raa EEA EAE 8 REPAIR AND MAINTENANCE oo naene a aea na e e s ea edie ec ewe AS 16 AOLEING S TA NHAT Da soe apie voce tere A AEE TET 26 ADHESION STANDARD a n WS WAS ara OT aN Sete 27 CIRCUIT DIAGRAM Ga WIRING riers sine asain a Sara aida LAE 28 PARTS GUIDE AND PARTS EIST E T T ATS 29 File this manual into the service manual PC 1500 amp Option Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1500 info The Color Graphic Printer DPG1301 is an X Y polotter that uses ball point pens as its writing instru ments Driven by stepping motors it is capable of high accuracy plotting with a resolution of 0 2 mm and printing at a speed of 12 cps The carriage has a four pen capacity Color selection is done by moving the carriage in an X axial direction permitting random color graphic plotting The printer has the folowing features 1 4 color graphic plotting 2 Compactness and light weight 3 High resolution of 0 2 mm x 21
5. Idle Gear Bobbin Gear Pulley Support Base Right Pulley Support Base Left Slide Unit Step Angle and Minimum Movement Pitch The reduction ratio between the stepping motor and bobbin gear is 1 9 01 and for each stepping motor pulse 18 360 the slider unit that is pen X direction movement is 0 2mm The motive power is transmitted to the bobbin gear and slider unit by a wire and the wire tension is main tained by a coil spring 3 Y Drive Mechanism Paper Feed Mechanism Section The Y direction drive mechanism consists of the Y stepping motor idle gear rubber roller unit paper holding roller right and paper holding roller left The reduction ratio between the Y stepping motor called the Y motor below and rubber roller gear is 7 86 As is the case with the X direc tion the rubber roller movement per pulse of the Y motor that is the Y direction movement quantity of the recording paper is 0 2mm Paper Holding Roller Rubber Roller Unit Left Y Stepping Motor Paper Holding Roller Right Do not sale this PDF All and more about Sharp PC 1500 at http Awww PC 1 500 info 4 Pen Drive Mechanism Section The pen drive mechanism namely the pen up down mechanism comprises a self holding type electromagnet ejection lever roller lever and ball point pens Pen up and down directions are as shown below Pen up State The pen retracts when the electromagnet is energized f
6. P T 2 X motor rotates but slider unit does not move to the right or left 1 Operates in pen down mode only and not normal 3 Insufficient Lateral Movement 3 Wire fastening position on bobbin has moved 4 Improper pulley rota tion of pulley support base unit right 5 Sleeve 2 5 and frame make contact 6 X motor unit 2 1 is operating improperly 1 Wire has come off 2 Wire is cut 3 Bobbin gear and wire slip 4 Gear is damaged 1 Rubber roller unit 3 3 is scratched 2 Print paper has irregulations 3 Deformation of ejection lever shaft unit 4 2 Rotate bobbin gear unit 2 3 by hand and check that slider unit moves smoothly from left edge to right edge Dismount wire from pulley and check for smooth rotation Check for deformation between frame unit and sleeve as well as for other phenomena Dismount X idle gear 2 2 slowly rotate motor gear and check for abnormal load Check if wire has come off the bobbin gear Check that wire has not been cut Confirm that wire is properly screwed on to bobbin gear Check that X idle gear and bobbin gear are operating properly Slowly rotate the rubber roller by hand and check for scratches and foreign matter Check the surface of the print paper Check the contact between the ejection lever and ejection roller 4 4 Restretch wire if its fasten ing position is wrong Replace pulley support base uni
7. 1 45 for line width of 0 25 2 Character to character spacing 1 2 10 3 Line spacing 2 4210 0 p gt uy Do not sale this PDF All and more about Sharp PC 1500 at http Awww PC 1 500 info 3 Effective range of plotting 1 Plotting direction In reference with the carriage moving direction the rightward direction is determined to be X axis and the leftward direction is determined to be X axis 2 Effective range of plotting X axis 43 2mm 216 steps Y axis Any range as determined by software 216 steps Effective range of plotting 5 am 43 2 mm 9 8 mm 58 mm 3 Accumulative error in Y axis As the paper is fed by means of friction with rubber for the Y axis there may arise a slight deviation which should be within a range of 3mm as measured in the following manner provided that specific paper guide is in use Example Programme 16 GRAPH GLCURSOR lt 8 20 FOR A 1TO 28 Max 3 mm L 3B RLINE 8 2800 5 0 0 280 X 15 Bd 40 NEXT A Sg RLINE 0 185 J 205 03 0 sl 32 n 62 RLINE 2 8 8 LB 15 215 8 4 Recording paper and ball point pens 7 END Recording paper Kind Ordinary paper Dimensions Paper width 58 mm 2 1 4 Core size 70mm 2 3 4 max Paper length About 55m for the core size of 70mm Recommended paper High quality paper of about 45kg with thickness of 65 to 80 micron 1 000 sheets of 788 x 1 091 mm paper equal
8. 10 0287 O1 Push roller OOPDGOS5S Side head unit OOPDGO63 Read SW sunit OOP19 0219 02 Pawl angle OOPDGO60 Pen eject lever OOP19 0214 02 Pen eject spring OOP 1 O0062 02 Pen eject plate OOP I1 0045 01 Motor cover OOP23 0018 O1 Rubber bushing cushion OOP23 0017 O1 Rubber pad cushion OOPCB68185 Washer 3 0 OOP24 0209 0 Washer 2 5 O00P23 0025 01 Washer 1 7 gt i Ea A MA CP CIEGO 2 2 22 2 2 2 2 42 gt d ww oS t 1 1 w M k Do not sale this PDF e GOO oO Di OM o ai a T oO AIGO O O oa o1 o O12 od 9 CLC S vu 0 gt gt Pl gt PrP PP Pp T gt dia b OO gt All and more about Sharp PC 1500 at http www PC 1500 info SP14X1 6 Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1 500 info 31 Do not sale this PDF
9. return spring Remove paper and check for paper guide deformation Measure the pen length Check transmission system from electromagnet to pen drive Check for foreign matter Check if slider moves smoothly by rotating the bobbin gear by hand Check for contact Check color change bar Check all four pens to see if they have come off x Pen exchange Rotary holder exchange Removal of foreign matter Repalce rotary holder set 4 5 2 x Return it to its normal shape using tweezers etc if it is only slightly deformed Remount properly if small roller which holds the pape has come off Mount a proper pen length 23 3 mm See Phenomenon 4 Remove foreign matter and exchange slider unit Replace slider unit e Gently lift color change bar using tweezers Replace color change click Repair using tweezers Replace rotary holder if retum spring is deformed OJU 00S Ld MMAY Y 16 OOGL Od dieys jnoge asow pue jiy iii JQd S 4 BJS JOU oq CC R e a 7 Paper is not fed 3 Rotary holder rota tions are short by one 1 Y motor 3 1 does not rotate 3 Pen return spring is deformed 2 Reed switch is faulty 1 Discrepancy in mounting of the reed switch unit 2 Excessive rotation of rotary holder 1 Y motor lead wire is cut 2 Deformation of Y idle gear 3 2 3 Rubber roller unit 3 3 does not rotate well 4 Foreign matter between
10. 6 steps 4 Printing of a maximum of 36 columns line 5 Powered by a nickel cadmium battery 6 58 mm width plain paper can be used Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1500 info 1 FEATURES AND OUTLINE The color graphic printer is an X Y plotter that uses ball point pens It permits high speed printing of as many as 12 characters per second with high resolution power of 0 2mm as driven by the stepping motor Four pens of different colors are fitted on the carriage which permits you to draw graphics of different colors as the color is selected in moving on the X axis Four color graphic plot Compact and light weight High resolution of 0 2mm x 216 steps Printing width of 36 columns line at a maximum Allows operation by means of NiCd battery Use of ordinary paper of 58mm wide 2 SPECIFICATIONS G L E LM HA 1 Model name DPG 1301 2 Printing functions Print method Ball point pen recording with four color rotary select system Drive system Drum type X Y plotter Printing speed 12 characters second for specified characters Reference Printing columns 36 columns line for specified characters 36 18 12 9 columns selective Stepping speed 260 steps second Stepping distance 0 2mm for X axis and 0 2mm for Y axis Line drawing speed 52mm second X and Y axis 73mm second for 45 direction Character size One example of printed character 1 Character size 1 05 x
11. Ball point Pen Black Move the slider to the left edge Ball point Pen Blue Ball point Pen Green Ball point Pen Red Insert the pen tip at the tip of the pen return spring and push the rear 14 Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1500 info Reassembly Pesto Parts to be Reassembled Precautions for Reassembly Sequence Rotate the rotary holder in the direction of arrow A and insert the pen Mount the pen color posi tion making the magnet for the reed switch as the reference 15 Do not sale this PDF All and more about Sharp PC 1500 at http Awww PC 1 500 info 5 REPAIR AND MAINTENANCE 1 Handling Precautions 1 Carrying Printer 1 Carry the printer by hold ing it in the directions shown by gt troubles 2 The printer may be carried by holding on to the upper face of the motor cover and paper guide However do not apply pressure to it Carrying the printer in the direction will cause various Motor Cover Gear Electromagnet z2 Color Changing bar strong Slider Unit ff 2 Sections where Pressure Should Not be Applied 1 Do not touch the slider unit except when taking a pen out Particularly never apply pressure in the direction of rotation 2 Do not touch the wire The pulley may come off 3 Do not touch the color changing bar When bent color changing cannot be accomplished 3 Sections Not to be Touche
12. Hang the electromatnet unit actuator on the coupling lever on the ejection lever unit Mount so that open strokes are 0 6 mm Clamping torque 3 5 kg lt m Screw lock paint coating 46 Reed Switch Unit Screw lock paint coating SP2x3 Cross recessed Pan Head Rotate the bobbin gear Machine Screws The reed switch must actuate when the magnet at the left edge of the slider approaches the closest reed switch 2 7 Pulley Support Base Right Unit Wire Unit Stretch wire on the pulley support Sleeve plate left unit and bobbin gear WW 11 Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1 500 info coor Pars Symbol Parts to be Reassembled Precautions for Reassembly The wire must be stretched in the order described below 1 As shown in Fig 1 the spring must be pressed against the side plate using 2 finger tip with the knot of the wire in alignment with the side plate at point A 2 Next thread the leading edge of the wire through the pulley B and the protrusion C 3 As shown in Fig 2 align the slit D of the bobbin gear so that it should on a line drawn between the bobbin gear shaft E and the idler gear shaft F D Fig 2 4 Wind the wire around the bobbin gear for one and half a turn then thread it through Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1500 info aaa Parts Symbol Parts to be Reassem
13. MMMY d WY Je OOGL Od dieys jnoge asow pue jiy iii Od S 4 ajes ou oq Ez 2 Paper and rubber roller slip 8 Y direction movement is insufficient 1 Character alignment on one line is bad and the line rises at the right end 2 Stepping error in Y direction 1 Damage to paper hold ing roller large 3 6 and paper holding roller small 3 7 2 Deformation of paper guide 3 Foreign matter in paper guide 1 Roll paper load is too heavy 1 Y drive mechanism gear is damaged 2 Sliding paper feed gear by one tooth gearing of rubber roller unit is not enough 3 Rubber roller unit bearing is worn 4 Low battery voltage Check if paper holding roller is there Check for paper guide deformation Check for foreign matter in paper guide and for inser tion of paper Check that roll paper is guided smoothly into the printer Check Y idle gear 3 2 rubber roller unit 3 3 gear and Y motor unit 3 1 gear Check that the two piece tooth gear on rubber roller unit is engaging after being slid by one tooth Move rubber roller unit gear up and down by hand and check for play Check if battery voltage is below 4 5V Replace damaged roller Replace paper guide Remove foreign matter Repair roll paper guide Replace gears Mount after setting it properly Replace rubber roller unit if wear is noticed Fix by using a cyano acrylate adhesive
14. as it comes off the frame unit 1 1 Y Motor Unit Suction solder in the junction Flat Wafer Assembly section of the two printed Bobbin Unit circuit boards X Idle Unit Note brass fittings may slide Paper Holding Roller Support off Don t lose Plate Left Unit X Motor Unit Pulley Support Base Left Unit Push in plastic tabs from inside Slider Shaft A of flame Slider Shaft B Slider Unit Ejection Lever Shaft Unit Ejection Lever Color Change Reed Switch Unit Rubber Bushing Rubber Pad Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1500 info 2 Reassembly Reassembly can be completed most efficiently by referring to the reassembly sequence and precau tions shown below ae Parts Symbol Parts to be Reassembled Precautions for Reassembly X Motor Unit Screws may be coated with lock Cross recessed Pan Head Machine Paint Screws Y Motor Unit Cross recessed Pan Head Machine Screws Rubber Pad Rubber Bushing Paper Holding Roller Support Fit the end of the rubber roller Rubber Roller Unit unit into the left side and push the Plain Washer bearing to the left side to fit the Paper Holding Roller Plate other end into the right side Right Unit X Idle Gear Move the bobbin gear by one tooth Type E Stopper Ring and insert the X idle gear Babbin Gear Unit Recommend to engage after mark ing the tooth tip and moving the gear by one tooth Do not sale this PDF
15. bly Precautions for Reassembly 5 Wind the wire around the pulle G then thread through the hole in the side plate 6 Now set the slider unit toa distance of Smm from the right magnet side then thread the wire through the hole in the slider unit as shown in Fig 4 iS et San Fig 4 Hold the wire at the point A and stretch the wire towards the direction H then adjust the location of the slider unit so that the distance between the side plate and the slider unit should become about Smm 13 Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1 500 info aoe Parts Symbol Parts to be Reassembled Precautions for Reassembly 7 Apply the wire to the pulley support bracket right 2 7 then thread the wire through the hole in the side plate again 8 Next insert the wire into the sleeve thread through the spring hook loop then thread the wire through the sleeve 9 Pull the one of the wire i until the tension of 1 60 grams is on the spring about 2mm of spring elongation then set the sleeve using the long nose pliers 10 Check a proper movement of the slider Phillips head small pan head Securing of the bobbin gear with screw the wire Cross recessed Pan Head Machine Adjust the relative positions of the Screw wire and slider so that the drawing line in the X direction will be at the center of the paper guide Screw lock paint coating
16. d 1 No shaft should be touched with bare hands 2 Do not touch the pen return spring 3 Do not touch the rotary holder except when the slider is positioned at the left edge of the frame and a pen is mounted 4 Do not touch the slider 4 Sections Where Magnetic Substances Should be Kept Away 1 Do not place a magnetic substance or powder a permanent magnet or an electromagnet close to the permanent magnet of the color position detector 2 A strong rare earth magnet is used in the electromagnet unit 5 Other Be very careful not to drop the pen or in any way bend it When the ink is exhausted hold by the tail plug section and shake it 2 Maintenance Perform repairs and maintenance as shown below to maintain the initial printer quality as long as possible 1 Cleaning Clean the printer and remove paper dust dirt etc periodically about every three months or after using 5 rolls of recording paper Points for Cleaning 1 Paper dust dirt etc should be vacuumed up Use an electric vacuum cleaner 2 Use alcohol or benzene when removing stains Thinner trichloroethylene and ketone solvent may damage the plastic parts and should not be used 3 Grease any places where there is no grease or where it is not sufficient Do not grease unless greasing is required Do not use a lubricant except that which is specified Refer to Item 6 Qiling Standard 2 Recording Paper 1 Use recording paper recom
17. gears 5 Low battery voltage 6 Paper holding roller support plate unit left 3 4 does not operate smoothly 7 Paper holding roller support plate unit right 3 5 does not function well Location and Method of Checking Check the shape of the pen return spring Check if reed switch actuates when magnetic flux is normal Check position of reed switch unit Check if rotary holder excessively due to foreign matter etc Check if normal current is impressed to each phase of the motor Check if Y idle gear is normal or not Dismount Y idle gear and check rubber roller rotations Caution rotations are heavy due to friction between rubber roller and paper guide when paper is not inserted Slowly rotate Y idel gear by hand and check for foreign matter Check if battery voltage is below 4 5V Hook tweezer tips in hole of spring hook on paper holding roller support plate unit and move it up and down Hook tweezer tips in hole of spring hook on paper holding roller support plate unit and move it up and down Repair Method Replace rotary holder Replace reed switch unit 4 6 Replace reed switch unit Remove foreign matter etc Replace X motor Replace Y idle gear Replace rubber roller unit Remove foreign matter Recharge to normal voltage Replace paper holding roller support plate unit left Replace paper holding roller support plate unit right OJU 009 b Od
18. her Contact section between plain washer and side plate Sliding section between ejection lever shaft unit and slide plate Sliding section between ejection roller and slider set Tooth section of X idle gear Tooth section of Y idle gear Sliding section between holder stopper and holding plate Electromagnet unit actuator shaft Slider shaft A Slider shaft B Do not sale this PDF UKOG 0108CSZZ UKOG 0108CSZZ UKOG 0108CSZZ UKOG 0108CSZZ UKOG 0108CSZZ UKOG 0108CSZZ UKOG 0108CSZZ UKOG 0108CSZZ UKOG 0108CSZZ UKOG 0108CSZZ UKOG 0108CSZZ UKOG 0098CSZZ UKOG 0098CSZZ All and more about Sharp PC 1500 at http Awww PC 1500 info 7 ADHESION STANDARD The table below shows points on the clamps where adhesion is to be applied to lock the screws as well as adhesion points on the printer bearings Make sure that more than 1 4 of the screw heads are glued but that no adhesive is present in the screw head recessions X motor unit set screws in 2 places Phillips type pan head machine screws SP2 3 x 3 Screw lock UKOG 0003SCZZ Phillips type pan head machine screws SP2 x 3 Bobbin gear unit wire set screws 1 place Phillips type pan head machine screws SP2 x 3 Screw lock UKOG 0003CSZZ Slider unit wire set screws 1 place Phillips type pan head machine screws SP2 x 3 Screw lock ROUSSEL Y motor unit set screws 2 places Phillips type pan head machine screws SP2 3 x 3 Screw lock UKOG 0003CSZZ Ph
19. illips type pan head machine screws SP2 x 3 Electromagnet unit set screws in one place Phillips type pan head machine screws SP2 5 x 3 UKOG 0003CSZZ Reed switch unit set screws in one place Screw lock UKOG 0003CSZZ Phillips type pan head machine screws SP2 x 3 2 Color change bar set screws Phillips type pan head machine screws SP1 4 x 1 6 Screw lock UKOG 0003CSZZ Cyano acrylate UKOG 0032CSZZ adhesive Rubber roller unit bearing and side plate 27 Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1 500 info 8 CIRCUIT DIAGRAM amp WIRING 1234567 8 9 10111213 Y Motor Red Black Reed switch Solenoid Circuit diagram Color positon detector 28 Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1500 info 9 PARTS GUIDE AND PARTS LIST Do not sale this PDF 29 All and more about Sharp PC 1500 at http Awww PC 1 500 info z m E RTS DESCRIPTION OOPDGOS3 Frame unit z z i s L OOPO7 0132 01 X idler gear OOPDGO 3 Bobbin gear unit gt z z z z a m 0 o gt OOPDGOOS Rubber roller unit QOPDGO10 Paper plate Left OOPDGO 1 Paper plate Right Paper pressure roller A z z z z zjz z z z z z zZz z z Paper pressure roller B OOPDGO30 Push lever unit OOP 12 O0147 O1 Joint lever OOP
20. mended in Paragraph 24 of the specifications 16 Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1500 info 3 Repairs The printer has three repair levels A B and C taking into account the difficulty of after sale services and repairs Persons in charge of repairs are asked to make repairs after comparing their own technical proficiencies and the required repair level 1 Repair Levels Level A A general knowledge of the principles and construction of the printer and some degree of skill are required Experience or a high degree of skill is not required Level B A good knowledge of the principles and construction of the printer and the skill to disassemble the printer and to use measuring instruments jigs and tools accociated with disassembly and reassembly are required This level requires experience in making repairs Level C A high degree of special knowledge regarding the principles and construction of the printer are required along with the ability to use measuring instruments jigs and tools associated with the printer In depth experience and skill in repair work are required 2 Repair Procedure When a fault occurs carefully observe and check the type of failure and the conditions sur rounding it Find out the cause and make repairs after checking the location of the fault refer ring to the Repair Guide 1 Phenomenon Determine the trouble phenomenon from this column 2
21. or 5 ms against the actuator spring and held by a permanent magnet even after the current is cut off after the initial 5 ms iron Core Actuator Pin Ejection Lever Coupling Lever Actustor Pin P Rotation Angle Recording Paper Actuator Rotation Center Fig 4 Pen down State From its pen up state the pen descends when a current is impressed to the electromagnet for 5 ms in an opposite direction to that used for pen retraction After 5 ms the pen down state will be maintained by the actuator spring force 5 Color Change Mechanism Section The color change mechanism section consists of the X direction drive mechanism a pen holder and holder stopper both in the slider unit and projections inside the holding plates The operating principles are explained below Side Plate Left Do not sale this PDF All and more about Sharp PC 1500 at http Awww PC 1500 info Holder Stopper Holder Stopper Pen Holder Fig 5 To operate the color change mechanism first the slider is moved to the arca a l in Figure 6 45 pulses to the left from the origin Then the holder stopper in the slider contacts the projection on the holding plate and the wedge section of the holder stopper slips out of the pen holder which frees it to rotate Next by repeating the movement of the X motor for 30 pulses each in direction A and to the left the pen 1 in Figure 5 changes to pen 2 The spring moves the holder sto
22. perating voltage DC 24V max 2 Operating current 100mA max 3 Contact resistance 150m max 6 Durability Life 6 5 million characters ASCII 64 character set 1 Appearance Life 6 5 million are continuously printed in the minimum characters scale S 0 At any time during the test 2 Print quality Must be good ie 1 2 4 and 6 5 million characters appearance operating conditions and print quality are tested Pen life Continuous operational test is carried out 1 Ink life Must be able to draw in the print mode shown in Attached more than 250 meters Drawing 41 with a new pen in use 3 MECHANISM AND OPERATION The printer roughly consists of six blocks a frame X direction drive Y direction drive pen drive mechanism color change mechanism and pen take out mechanism sections An explanation of these blocks will be given below 1 Frame Section The frame section has a side plate right side plate left holding plate and paper guide The various mechanisms are mounted both inside and outside The lower edge of the frame is bent in the shape of the letter L and acts as a mounting leg 2 X Drive Mechanism Section The principal elements of the X direction drive mechanism are the X stepping motor idle gear bobbin gear pulley support base left pulley support base right slider unit wire etc Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1500 info Stepping Motor
23. pper to the right until it returns to the origin If then enters the pen holder groove The pen holde is then fixed and printing is ready 6 Pen Ejection Mechanism The pen ejection mechanism consists only of the pen ejection Lever that is mounted on the side plate right The slider unit is moved fully to the side plate right and is stopped in order to change the pen Push the pen ejection lever towards you and the pen will eject Electromagnet Pen Ejection Lever p7 Slider Unit Fig 6 Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1 500 info 4 DISASSEMBLY AND REASSEMBLY 1 Disassembly Remove the following parts from the frame in the sequence shown below Disassembly Sequence Electromagnet Unit Disassemble after removing Wire Unit cross recessed pan head machine Pen Take out Bar Unit screws SP2 x 3 and SP2 3 x Pulley Support Base Right Unit 3 and sleeves 2 5 Y Idle Gear Note brass fittings may slide Paper Holding Roller Support off Don t lose Plate Right Unit Motor Cover Lift up the motor cover 7 1 section covering the cross recessed pan head machine screws SP2 3 x 3 which hold the motor Remove the entire motor cover 7 1 by inserting a flat blade screwdriver in the paper guide as shown in the diagram below Rubber Roller Unit Push the rubber roller unit bearing to the left and remove from the right side of the rubber roller unit 3 3
24. rmation of bobbin gear unit 2 3 mis alignment of two piece teeth 4 Foreign matter has accumulated between gears 5 Low battery voltage 6 Slider unit 4 5 does not slide properly on shaft 1 Foreign matter has ac cumulated in the mov ing section of the slider unit 2 Contact between pen take out lever unit 6 1 and pen Location and Method of Checking Are the pens mounted pro perly Do the pens have enough ink Check that a normal current is impressed to each phase of the motor Check if the X idle gear is normal Dismount wire unit 2 4 rotate bobbin gear by hand and check rotation state Rotate bobbin and unit by hand and check for foreign matter Check if battery voltage is below 4 5V Dismount wire and move slider unit to the right and left by hand Check that slider unit moves smoothly on the effective printing area and check for an abnormal load by slowly rotating the bobbin gear by hand Check contact between pen take out lever and slider unit Mount properly Replace the pens Replace X motor Replace the X idle gear Replace bobbin gear unit Remove foreign matter Recharge to regular voltage e Replace slide unit e Remove foreign matter if it is obstructing movement Remove any foreign matter Replace pen take out lever OJUI 00S L Od MMMy dyY Ye OOS L Od dieys noge asow pue y iii JOd SIU ajes Jou OG BL Location and Method
25. s to 45kg Weight equivalent to 52 3 g m Ball point pen Color Black blue red green Size 5 x 23 3 Kind of ink Water color Life 250m 820 ft or more Do not sale this PDF All and more about Sharp PC 1500 at http www PC 1500 info 5 Electrical characteristics 5 1 Input Output teminals co E nba Color position sensor E A Sa X motor LH aj 7 O WEA EEJ Y motor Ee pA Pen down upon current supply to the magnet in above polarity 5 2 Magnet 1 Voltage 4 8520 65V 2 Type Self holding magnet 3 DC resistance 52b10 20 C 4 Peak current About 1 1A 20 C 4 85V About 1 4A 0 C 5 5V worst case 5 3 Motor 260 steps second CO H H 3 DC resistance A1 3009 10 2562 10 20 C resistance per phase A2 Abt 0 16A_ Abt 0 19A 20 C 4 85V per phase A3 Abt 0 23A Abt 0 27A 0 C 5 5V worst case A4 Abt 0 12A Abt 0 13A 20 C 4 85V per phase A5 Abt 0 16A Abt 0 18A O C 5 5V worst case Do not sale this PDF All and more about Sharp PC 1500 at http Awww PC 1 500 info 5 4 Power consumption rae Ye vo Sa ACI 64 character set S 0 ACII 64 character set excluding CR ACII 64 character set 4 2V S ACII 64 character set 58V 500 580 S printed in 5 columns 385 Paper feed action 260 90 90 C av 20 E wae oa 5 5 Color position sensing switch 18 1 2 0 9 24 38 1 O
26. t Repalce sleeve Replace motor Restretch wire properly Replace wire unit Tighten the screws e Replace the bobbin gear unit s Replace damaged gear x Replace rubber roller unit if scratches are found x Remove foreign matter Use normal print paper Replace ejection lever shaft unit O UI 00S L Od MMW yY JE OOGL Od dieys jnoge asow pue IY iii Id Siu jes jou oq oz 4 Drawing is done segment by segment 1 Actuator of the electro magnet unit 4 1 is detached from the electromagnet coil 4 Low battery voltage 5 Contact between set screw of return spring and small roller Current is not being supplied to the electro magnet properly Abnormally large electromagnet energize stroke Low battery voltage Electromagnet unit is faulty Rotary holder on slider unit has moved 6 Ejection lever does not operate smoothly Check that battery voltage is not below 4 S5V Move slider and confirm contact Check if current is going to the electromagnet Check if gap between rubber roller and pen tip is 0 6mm in the pen up mode Check if battery voltage is below 4 5V Check operation of the actuator for the electro magnet unit spring fatigue deformation ete Check that rotary holder pen is directly above the specified position print position Check for a bend in the ejection lever and inspect the bearing section Recharge to normal voltage
27. unt properly Exchange slider unit Replace rotary holder Replace wire unit OJU 00S L Od MMMY dHY Je OOS L Od dieys noge asow pue IY iii JOd S 4 ajes ou oq SZ ewer _trv ef ar a 2 F is printed as shown 1 Pen and return spring below F C 3 P is short as shown 1 Faulty engagement of below paper feed gear inside rubber roller unit after sliding by one P tooth 2 Substantial play in rubber roller bearing 2 Play in entire slider Repair Method Check by rotating Y idle gear l Replace rotary holder back and forth for several seconds by hand in the pen down mode Check slider and X drive system Check gear engagement Check for play by moving the gear vertically Exchange slider Mount properly Replace rubber roller unit OJUI00S b Od MMM CHY Je OOGL Od dieys noge asow pue jiy All and more about Sharp PC 1500 at http www PC 1 500 info 6 OILING STANDARD Two types of oil are used in this printer G488 and CRC 5 56 When oiling during disassembly and re assembly thoroughly clean the parts and oil in accordance with the table below Area of contact between paper holding roller support plate left and side plate Contact section between paper holding roller support plate right and side plate Sliding sections 4 locations between paper holding roller and roller shaft Sliding section between rubber roller unit shaft and plain was
28. when there is play between the bearing and frame Replace printer Recharge to regular voltage OJUI O0S L Od MMMY dyY 16 OOGL Od deys noge asow pue IY ve iii Id S 4 ayes jou oq a a 7 9 Character mis alignment is substantial 3 Origin position differs after making many movemtnts in Y direc tion Origin position changes after printing a large number of characters 1 F is drawn as shown below i 1 Rubber roller and paper slip 2 Deformation of paper guide Roll paper is guided improperly Paper type does not match printer Improper engagement of bobbin gear unit 2 3 after sliding by one tooth Rotary holder and slider do not lock sufficiently Play between pen return spring and pen tips Wire spring fatigue in wire unit 2 4 elonga tion of wire ae and oe of Checki Check for stained rubber roller Check paper guide Check roll paper rotation and ensure that the center of the paper and the center of the printer are aligned Check that the specified paper is used Check gear engagement Check rotary holder play by rotating it slowly by hand Check by rotating X bobbin gear back and forth for several seconds by hand in the pen down mode Check for slack in wire Repair Method Wipe off rubber roller stain Repair paper guide if there is any deformation Replace printer Repair roll paper guide Use the specified paper Mo
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