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SERVICE MANUAL GS-IZOO

1. Spring pressure of side presser 30 558 Use a tension gauge 50g C063 ie 0 Hook a scale 0045 on claw and ti Tension of claw braking spring 60 70g pes prever pull it in the Tension of claw spring Shaft direction 50 5008 Near claw pin Use a scale 1 kg C026 25 Forward direction 850 950g Near claw pin Use a scale 1 kg 6048 23 Claw tip protrugent length 1 0 1 1mm length from aperture plate rail Use a gauge C047 25 i i Three lines should appear d down testas up and down 5 lines Wet tie ae 25 Forward 2 0 Unstable picture 2 Sum Picture size 50cm in width Speed 24 fps Reverse 2 0mm 18 2 speed 30 5 fps Mith a rating voltage After 5 minutes running 87 Speed fine adjustment 2442 fps Take up tension 40 50g Use 800ft reel and a scale C045 Ai 18 fps 60 Rewinding tension 200430g Use a 800ft reel and scale C01 AL 18 fpa Gh Rewinding speed 150420 sec Time for rewinding a 1200ft film Center over 1150 lx Picture size 50cm in width 76 1 luminance Corner over 53 With respect to a center 76 Lumen over 220 Im Screen lumen 76 Projection lamp voltage Er EXE On transformer terminal With a rating voltage 77 Projection lamp life 25 hours lamp switch knob on High side Dissolving power 20 Left mark should clearly be distinguished 4 Corners Spring pressure of pad lever 300g On FWD condition Use a scale 500g C096 A5 Spring pressure of head pre
2. FIG 12 E Auto Threading Mechanism TROUBLESHOOTING Refer to Fig 12 The 6 s defective Mable to et Pronto eC ears pire Cho cop etek position Unable to set back from auto threading E m Film is interrupted in auto threading The 16 is out of position Unstable picture right leftward The 16 malfunctions DISASSEMBLY 1 Take off the 3 4 after unscrewing the 2 Note that the 12 may fly off 2 Tak off the 6 after unscrewing the 5 x2 The 7 8 will fall off 3 Take off the 11 after unscrewing the 9 The 10 will fall off Take off the 1 after unscrewing the 15 14 The 15 will fall off 5 For further disassembly refer to Fig 19 You had better not disassemble the 18 21 22 because a freme line gets entirely out of order except unavoidable case REASSEMBLY NOTES 1 Follow the reverse way of the disassembly steps 2 Make sure that each lever operates firmly 3 When you push the 23 down for auto threading the 16 pushes the 23 down Under this condition the space between the 25 and 24 should be within 8 8 1mm as shown in Fig 12 For this adjustment change the 16 s position FIG 13 First Sprocket Shoe 2 First Sprocket First Sprocket Gear 11 Threading Button TROUBLESHOOTING Refer to Fig 13 Film scratch The e has flaw or b
3. APPEARANCE PARTS A Front Cover Rear Cover Amplifier Cover seeevesesessesseceies MACHINE FRAME SECTION Machine Frame B Aperture 1 C Claw amp Shutter ee Mente D Cam F First Sprocket G Projection Lens Holder CONTENTS Page E 10 10 10 12 32 Counter Gear amp Rewinding Switch 68 Main Motor amp Fan Motor 70 Safety Shutter Lamp Socket eee 76 Transformer 78 Power amp Lamp Switch Unit 80 ESS CIRCUIT SECTION 82 A ESS Circuit 82 B Troubleshooting 85 CONTROL CIRCUIT SECTION 86 Control Circuit Board Troubleshooting 87 Circuit Analysis 95 Logical Circuit 95 Forward FWD Circuit Reverse REV Circuit d Still Circuit Governor Circuit f ESS Circuit 100 105 105 109 Page 3 SOUND HEAD FRAME SECTION 36 Sound Frame 36 B Ped Roller Lever amp Film Presser 38 Head Presser 40 D Combinntion Mead 10 Head Holder adii Spring Pressure Adjustment 46 G Head Pres
4. DISASSEMBLY 1 Remove the 1 x2 and detach the 9 from the machine frame Don t detach it except unavoidable case 2 For further disassembly refer to Fig 14 The 20 is adhered with double tack tape REASSEMBLY NOTES 1 Attach the 3 4 to the 5 with 6 x2 2 Attach the above assembly and the 7 to the 11 with 12 x4 tentatively Refer to Fig 14 A to attach the 7 3 Attach the 14 to the 11 with 21 x2 and 15 Don t misplace the 15 and 21 4 Attach the 16 17 18 to the 13 with 19 Attaching position of the 16 is where the notches a of 11 15 coincides with each other when you turn the 16 fully clockwise 5 Attach 9 to the machine frame with 1 x2 Adjust and tighten the position of the 3 4 5 7 being assembled tentatively so that PP mask can be in the ratio of 4 6 above and below against AP mask Refer to Fig 14 Adjust it fine by changing the position of the 2 6 After attaching the machine frame assembly to the base frame load the resolving power film type S P054 and run Make sure the picture is in focus ai the all points 1f not adjust it as follows In case upper or lower part out of focus adjust it with 1 In case right or left is out of focus adjust it with b an SOUND HEAD FRAME SECTION A Sound Frame 1 TROUBLESHOOTING Refer to Fig 15 Wow Flutter Attaching position of 1 7200 G2 are incorrect Flav deformati
5. follows Set white leader film on the aperture plate Whenever the claw tip just protrudes into the perforation it shouldn t touch the perforation edge regardless a framing knob Fig 6 16 position This is applied to both of forward and reverse projections For this adjustment shift the claw position with 15 x2 in Fig 7 C Refer to Fig 8 8 Check the claw stroke As sending the film of one or two frames by hand make sure that there is a slight clearance Fig PA between the claw tip and perforation just before the tip transports the film and that the claw tip doesn t scratch the perforation edge when putting back 9 Attach the shutter a Make sure that oil doesn t adhere to the 3 s pulley in Fig 6 b Adjust the shutter position so that it shades the aperture mask while the claw transports the film of one frame Refer to Fig 10 10 Adjust the framing Attach the machine frame to the body Project the resolving power film P054 Measure the width between the aperture mask upper line and picture bottom line appearing when the framing knob is turned fully clockwise Memorize this width Next measure the width between the mask bottom line and picture upper line appearing when the knob is turned fully counterclockwise The former width and the later should be in ratio of 6 4 If not adjust the 17 position in Fig 6 26 FIG 11 D Cam Assembly 1 TROUBLESHOOTING Refer to Fig 11 There i
6. lt su SW 304 1 1r303 OFF sw 304 Only while pushing FWD REY button slow motion is possible Pinch roller Head presser OFF 4 STILL ON REV STILL ON EWD ON 302 REV Motor Circuit REV o 304 5 OFF e Wave form shaping J circuit Comporating 18 fps 2h fps Time constant varies the square wave output of multi one shot Governor Circuit 107 Governor Circuit NORMAL too Slow too Fast FG ey pe circuit ee 24 pulses 1 rpm JUUL Speed adjustment VR404 Sync start stop pulse Sync sTov fast signa reference o 1 lit ESS Circuit ESS is the pulse talkie system controlled by the built in pulse control circuit ESS Circuit C405 Discharging x 405 Charging Filter P circuit x Speed sensor output PULSE IN When negative pulse goes into l pin the output at 3 pin changes to 1 and C405 is charged Since the output at 4 pin changes to 1 that at 6 pin changes to 0 and that at 2 pin becomes 0 Therefore the output at 3 pin keeps 1 REED SWITCH ON When reed switch is ON output at 5 pin changes to 0 and that at 6 pin changes to 1 Therefore C405 is discharge
7. Circuit trouble Lack of oil on their shafts Noise from 1 and or 2 Wipe off oil on contact surface of carbon brushes or replace the 1 2 Excessive tension of V belt j Circuit trouble geek Slow rotation of main motor of fan motor isn t changeable Circuit trouble though FWD button is depressed DISASSEMBLY Refer to Fig 36 REASSEMBLY NOTES 1 Attach the 1 in place where the tension of V belt becomes as shown in Fig 36 A 2 When attaching the 2 refer to the reassembly notes No 2 on Page 16 71 FIG 37 Safety Shutter Assembly 1 TROUBLESHOOTING Refer to Fig 37 Uneven illumination by safety shutter Safety shutter doesn t function normally Film is damaged by head in STILL projection The 2 is defective or out of position DISASSEMBLY 1 After removal of the main motor Refer to Page 70 unscrew the 3 x2 and remove the 1 If necessity of removing the 4 take off the fan motor Refer to Page 70 in advance 2 Unscrew the 5 x2 and remove the 6 assembly Unsolder the three wires on the 6 3 For further disassembly refer to Fig 37 REASSEMBLY NOTES 1 The correlation position of the 2 7 is where the 7 turns on when you push a point of the 2 fully If the 7 turns on quicker than normal timing the 1 will stop on the way If the 7 doesn t turn on at all the 2 is burnt and becomes defective 2 Bend the 8 if its movement is
8. Cont d How to detach the amplifier board 1 from the amplifier board 10 TROUBLESHOOTING Refer to Fig 46 Spot recording malfunctions 1 REC button movement isn t smooth The 12 15 are defective Volume knobs don t turn smoothly Knobs are out of position Defect of amplifier from Page 123 forth DISASSEMBLY 1 Unscrew the 2 x3 amp 5 Remove the 4 x3 and peel the 5 off 2 Unscrew the 6 x2 with 7 and the 8 with 9 Detach the 1 from the 10 3 For further disassembly refer to Fig 46 REASSEMBLY NOTES 1 Attach the 11 between the connectors of 1 10 carefully not to touch resistors capacitors etc 2 Attach the knob to the center of 5 s hole respectively 3 Don t forget to insert the isolation washer when tightening the jack 129 Amplifier Design 1 2 5 LU LU 10 Stereo Circuit The GS 1200 uses Track 1 as the left channel and Track 2 as the right channel It is possible to operate each channel independently The public address PA system and optical playback circuit are connec ted with only the left channel One piece of bias oscillator is used for both channels Remote Recording Solenoids are used for recording playback changeover With use of remote controller noise Refer to Page 160 so the operator can operate the changeover by remote controller the pulse operation is easy and th
9. Fig Remarks 1 REC PLAY 1 Workable by solenoid 2 31201 a 2 5 50102 NOR DOUBLE REC 1 50 4 5 202 2 50 5 5 103 for REC 1 58 _ 6 Sw205 2 48 7 SW104 Voltage 1 for solenoid 8 swo04 2 9 5105 A9 10 SW106 STEREO MONO 49 11 34107 READY OFF 50 12 59108 for SPOT 50 JACKS Gack No Purpose J101 MIC 15 9201 16 J102 AUX IN 17 9202 s 18 7103 Monitor 19 J203 AUX OUT w Headphone PA MIC Fig 50 42 CN105 receptacle VARIABLE RESISTORS 123 Volume control AUX IN level 8 DOUBLE REC linked Bias adjustment AUX QUT level meter adjustment CONNECTORS N No Connection 38 101 30 Amp board 1 Control circuit 39 CN102 Ga 1 Amp board amp 1 40 CN103 2 Al t 1 Level meter 2 42 CN105 3P DOUBLE REC 5 level VR 5 0106 10P n 1 Cancel board CN107 Built in SP Control circuit 5 108 2P DIN Ext moe 46 CN208 2P DIN Li 2 122
10. Track 1 io 2 connect the resistor on track 2 side 51 Track at 10 VU Bias oscillation frequency 60K 245K Set both tracks to recording state Connect 100 Tou Mot AK ohms resistor across a ground wire on track 1 side 161 Bias rcurrent 7 Measure voltage across it Track 2 In case of track 2 connect the resistor on track 2 Recording Track 1 Cut a bias power supply Measure the current in signal current Track 9 A00Hz ihe same manner as bias measurement Set both tracks to recording state Connect 1 ohm eee resistor across a ground wire of track 1 161 Erasing current Measure voltage across it In case of track 2 Track 2 Exciter Lamp current Meusure with exciler lump wire V TROUBLE INDEX Unstable picture CER Film flow T es iun 76 Picture inclination Ee eee 72 76 g Changeover of H L is defective 80 h Picture flicker It isn t pre heated 80 1 Sometimes out of focus S Bk picture 72 76 Al tavan Difficult to replace it 72 3 Film scratch amp Unstable lighting 76 T lining noine 86 92 Sil Upper i i on 78 100 102 114 Upper loop is getting shorter in REV REV key operation 104 105 114 3 ditto in REV at top with STOP ke ditm H 5 eraiio L
11. 1 or 2 128 a Tee Neither AUX OUT line works 128 Unable to put spot recording condition 149 sound from either MONI 129 2 back M No sound from stereo headphone 129 Once operated solenoid won t put back 150 sound from EXT SP 1 or 2 19 E ihough OFF button is pushed No sound thru PA system k S i As soon as power is applied solenoid 151 Loud hum from each speaker 133 3 Yr Oscillation in magnetic playback 133 136 g Selenoid works with only shifting to m wating 1 or 2 198 S READY or M position without RIG button Neither muting circuit is workable 139 Amplifier fuse burns 152 L VI DISASSEMBLY amp REASSEMBLY NOTES 1 APPEARANCE PARTS A Front Cover 1 TROUBLESHOOTING Refer to Fig 1 Trouble Cause Unable to push a STILL button fully The 4 is fixed incorrectly DISASSEMBLY 1 Unscrew the 2 Loosen the 3 and remove the 1 2 on with disassembly works referring to Fig 1 REASSEMBLY NOTES 1 Follow the reverse way of the disassembly steps 2 Make sure that the 8 functions smoothly B Rear Cover 1 TROUBLESHOOTING Refer to Fig 2 No sound from a speaker Bad tone quality The is broken or the 3 is connected loosely DISASSEMBLY 1 Unscrew the 2 x2 and take off the 1 after disconnecting the 3 2 Go on with disassembly works referr
12. Tr 51 is broken Tr451 is poorly connected MOTOR ROTATION IS OUT OF CONTROL Voltage at B pin 1 451 is about 5 amp RA28 shorts R429 opens t Voltage between E B Tr453 is defective Tr452 is ov E Input of more than Generation circuit 0 2V is applied to opens l pin 16451 D405 D406 C461 short Y Motor stops by opening Tr 51 is broken Resistance betveen Tr 51 B 10403 shorts 11 amp 12 pins is shorts Tr452 is defective Tr452 B C circuit 27Kohm 18 fps Speed adjustment resistor line shorts J 92 95 C Circuit Analysis Logical Circuit When voltage at input output of the logical circuit gate is high Vee Supplied voltage it is called 1 or High end when low OV it is called 0 or Low The symbol of the gate means the inversion 9f the signal Inverter Inverter means that the inversion of 0 is l and vice versa GATE ABX bis 000 1 1 1 Only in the case both and 0 OR gate x 011 X 0 E B 101 When A is 1 X 0 regardless of B 111 3 3 ABX A B X X is inversion of X of OR gate dp When X is 1 at OR gate X is O at NOR gate A um this NOR gate and vice ver B Tee When X is O at OR gate X is 1 at this NOR gate ABX AxB X 000 Only in the case A and B are 1 X 1 AND gate 010 when A is 0 X 0 regar
13. _ Controllable by remote n Connection of SW304 6 controller is ok 50302 6 or the relating circuit is defective Poor wire connection among SW304 6 NC 9 pin and 12 pin 16502 PROJECTOR STARTS AS SOON AS POWER SWITCH IS UN Reset system isn t workable Stops by shorting across When turning off the power R302 opens SA ST A aA and shorting across C302 RESET system works 2502 C502 open 6502 opens 89 MAIN MOTOR DOESN T RUN 91 Voltage between at 5 amp 7 pins 16451 J DZA51 and ICA51 16451 is broken R28 opens R429 shorts are broken is 12V t Voltage between at Voltage at B pin Voltage at 2 pin 3 amp h pins ICh51 10451 is 1 7 10451 is about 5v is 1V Resistance between _ Speed adjustment Voltage across R429 11 amp 12 pins is resistor line is is about 1 7V 27Koha 18 fps poor connection Ch57 is connected Poor connection correctly between 1 451 8 pin amp R429 side ICh51 is broken Ch57 opens Motor runs by short Motor runs by short When you short Ch51 D404 short ing Tr455 EC ling Tr452 52 F503 burns Motor shorts Tr453 is broken Voltage between than 0 6V 4 pins ICA51 is less Tr452 is broken Motor runs by short ing 51 E C
14. is OV circuit is 10301 drops to broken less than 0 4V with FWD button pushed 16303 broken REV FLIP FLOP l is workable by REV ON or STOP ON 716301 is broken i Voltage at 4 pin 16302 drops as above 16302 defective REV PROJECTION ISN T WORKABLE Voltage at 2 pin 1 301 is ov is OK Poor connection of 10 pin Connection of 59504 5 C CN 1C501 amp 4 pin 16502 Replace ae it Y Voltage at 50505 or thel relating 9 pin 16503 circuit ia is less than defective 0 4v Poor connection Poor connection Poor connection between IC302 between 16502 between IC301 11 amp a pain amp 16301 12 pin amp 1503 9 pin 3 pin or W304 5 NC 10502 broken Voltage at 3 pin 10301 is less than 0 4V Voltage at 8 pin 16505 is QV SW304 or Vite at 13 relating 16301 drops to circuit is less than 0 4V 4 10201 broken broken when REV button is pushed Voltage at l pin 16502 drops to less than 0 4V as above 16303 broken Poor connection between 16501 15 amp 16502 1 pin 1 302 broken PROJECTOR DOESN T STOP Voltage at 9 amp 12 pin Poor wire connection to Projector starts normally w 1302 drops to OV when 16502 9 amp 12 pin STOP button is pushed
15. is about 0 6V is 5V Voltage at VR403 Center is approx 1 5v 8 pin IC451 connectio R426 VR403 open MOTOR RUNS SLOWLY WITHOUT INPUT PULSE Motor stops by Tr408 B E shorted Tr407 is broken C410 shorts Short Tr09 B E and set the projector to reed switch OFF position Check under STOP condition Inverted output appears at 5 amp 6 pin 16401 by earthing 1 amp 5 pin alternately C405 is charged by TC401 3 pin ON Jom ma open Y C405 discharges by R 12 RA52 open 1 101 3 pin OFF Trk03 is broken Y mo indicator Tr404 is broken In case connection of SW402 amp 54405 is OK R416 R417 open or 407 C408 short Tr408 is broken E C shorts 24 42192 FIG 43 7 CONTROL CIRCUIT SECTION A Control Circuit Board Assembly G TROUBLESHOOTING Refer to Fig 43 The wires being connected to connectors touch the rotation parte Poor connection of connectors Circuit trouble Pages 87 92 Control circuit board is broken Main motor doesn t run at 6 fps Adjust it with semi fixed resistor c using a tool C005 Main motor doesn t run at 18 fps Adjust it with semi fixed resistor using a tool C005 Main motor doesn t run at 24 fps Adjust it with semi fixed resistor b using a tool C005 ESS sync projection isn t
16. performance this amplifier is designed as an inverted amplifier The phase which is once inverted by the head switching circuit will be compensated And the operator con transfer the sound on one track to another track without phase shift Refer to Page 159 For superb sound performance the tone control for Bass is also provided High Cut Filter for Transferring Sound RP To allow the sound transfer between tracks a high cut f P SE Bec Play switch filter is connected to the playback circuit SW1O1 Track 1 When you set the Track 2 side to the recording condition the Track 1 filter will function because of a crossover connection as shown in Fig A7 Rec Play switch Refer to Page 157 54201 Track 2 Transistor Switch To reduce the mumber of switch and wire transistor is used as switch Tr105 Trl06 Tr107 Tr108 Trill Tr205 Tr206 amp Tr207 Earth CN101 7 22 To prevent noise and oscillation the earth circuit Pre Amplifier on the amplifier printed board is devided into three units Pre amplifier unit Power amplifier unit and Power Amplifier Control unit and is respectively connected to the control circuit printed board as shown in the schema Control Circuit Each point is not affected CN101 10 CNIO1 16 C Switches Jacks Variable Resistors and Connectors in Amplifier Circuit SWITCHES 15 50109 ALC_OFF PA 50 SW No Switching Brack
17. proper washer Attach the claw assembly to the machine frame Adjust the claw tip protrudent length from the aperture plate surface as follows a The length is 1 0mm Fig 7 The 1 0mm length is originally adjusted in assembling line with care but if not 1 0mm adjust the length by screwing or unscrewing the 15 in Fig 7 B using gauge P047 b When the length is 1 0mm the claw pin contacts close to the bottom of the cam Xf opens bend the b point in Fig 7 C c The two pieces of claw tip should protrude into the film perforations simultaneously Attach the 6 7 in Fig 6 and adjust their spring pressure as follows Move the claw downward fully position where claw ends to send the film and measure the pressure at the a point in Fig 7 C b The 7 s pressure is within 900 50g when you measuring in the direction that the claw transports the film Use a scale P048 The 6 s pressure is within 450 50g when you measuring in the direction that the claw goes away from the aperture plate Use a scale P026 ob amp Machine Frame Section beginning of forwarding x B 9 m t c A P MASK A ee beginning of forwarding halfway end of forwarding 8 end of forwarding lt FIG 10 C Sending Claw Assembly 1 and Shutter 3 Cont d REASSEMBLY NOTES Cont d 7 Adjust the claw position
18. the 1 from the projector 2 Pull out the 6 x2 7 x2 and peel off the 8 3 For further disassembly refer to Fig 42 REASSEMBLY NOTES l Follow the reverse way of the disassembly steps 2 Make sure the 9 10 11 12 14 are surely soldered on the board as they will take off easily B Troubleshooting PROJECTOR DOESN T START BY SYNC PULSE 85 One shot wave is present Voltage at 13 pin at 11 16401 16401 drops to 0 8V by sync pulse Input pulse comes into 1Ch01 C401 opens RAO shorts amp 5 pin DIN 6P lines open is defective 13 pin is about 3V without input pulse E at IC401 R402 shorts R403 opens Y Input pulse voltage is low Over resistance on 4 pin DIN 6P line lack of C401 capacity Motor runs by Tr407 E C shorted Motor runs by Tr408 E C shorted Ld Voltage at Tr408 C Poor wire connection from 2 pin 16451 RAO1 R421 R422 open 409 R423 short Tr 07 is defective R424 R425 open Trh08 is defective B Troubleshooting Cont d PROJECTOR DOESN T SYNCHRONIZE WITH TAPE RECORDER put voltage to ICAQl R406 shorts pin is about Q 8V OV R405 opens 3V 0 opens 5V 05 shorts R406 opens Poor connection of reed switch U Tr 09 is defective Input voltage to IChOl 5 pin
19. 1 Weak torque of the 1 Defect of the 2 or circuit trouble Noise during reverse projection Rewinding mechanism malfunctions entirely Slow rewinding speed Rewinding mechanism stopa on the way DISASSEMBLY 1 off the transformer Fig 40 1 without unsoldering the wires 2 Make disassembly procedures in accordance with order of the reference numbers in Fig 32 REASSEMBLY NOTES l Follow the reverse way of the disassembly steps 2 The 1 should run by DC 4V with consumption current of under 140mA without any load Use DC stabilized power supply COOK for check 3 The 1 should be attached to the position where it runs by DC AV with under 300mA current without any noise 4 the vire position on transformer is changed check and adjustment for take up is required Refer to Page 60 5 Take up tension at 800ft reel core should be within 45 5kg Use a bar spring scale CO43 6 Since no slip mechanism is applied you adjust the take up rewinding power with supply voltage from 3V to 4V D Front Arm 1 TROUBLESHOOTING Refer to Fig 35 Unable to rewind the film Defect of the 5 10 11 20 Noise Lack of grease at gears 10 15 18 and their shafts DISASSEMBLY 1 When repairing the inside only of front arm unscrew the 8 x2 and remove the 9 2 When detaching the whole front arm unsolder the two wires blue an
20. 5 5 SERVICE MANUAL GS 1200 ELMO CO LTD Nagoya Japan INTRODUCTION Refer to the TROUBLE INDEX on Page 7 in order to find the page to be referred to in accordance with trouble Refer to the DISASSEMBLY STEPS on Page 4 to reach the defective parts For example when you remove the Amplifier you should take off the Front Cover Page 10 Rear Cover Page 12 Amplifier Cover Page 14 and Amplifier Page 116 in order Disassembly order in a section in VI DISASSEMBLY amp REASSEMBLY NOTES is as follows First HOW TO DETACH A UNIT ASSEMBLY FROM THE PROJECTOR Next HOW TO DISASSEMBLE THE UNIT ASSEMBLY AND SQ ON Refer to the Parts List for the GS 1200 which will serve you when disassembling the projector TROUBLESHOOTING is shown in the head part of each article in DISASSEMBLY amp REASSEMBLY NOTES Please be careful in DISASSEMBLING and REASSEMBLING the parts not to cause other troubles The CIRCUIT ANALYSIS is on Page 95 which explicates the logical circuit used in the GS 1200 How to read the troubleshooting flow chart ANSWER QUESTION YES follow the under box Checkup point NO follow the right box YES K E Faulkner 1v TOOLS TEST FILMS amp OIL GREASE DISASSEMBLY STEPS TOLERANCE TROUBLE INDEX DISASSEMBLY amp RFASSEMBLY NOTES 1 2 B D E
21. G 16 A B Pad Roller Lever 1 TROUBLESHOOTING Refer to Fig 16 Flaw or uneven rotation of the 5 7 Wow Flutter out of The osition or its spring pressure is improper 8 s spring pressure are improper Wow Flutter during only optical film playback The 9 is out of position Film removing from filo path is not easy The 1 is out of position Film scratch The 6 s spring pressure is excessive Slow sound picking up Lower film loop is hardly formed during The optical playback 1 6 s spring pressure are insufficient DISASSEMBLY Remove the 1 by unscreving the 2 x2 For further disassembly refer to Fig 16 REASSEMBLY NOTES 1 Check the 5 s surface flaw or oil Attach the 5 to 1 in the 5 s shaft direction within 0 Imm by insertion of proper 2 Attach the 1 in place making the 1 5 2 00m the head guide with the 5 s groove Fig 16 B STILL projection and the 5 shouldn t touch the s The 5 should turn smoothly Stop a play Fix the E ring with Screw Lock as shown in Fig 16 A and coinciding a protrusion of The 1 5 shouldn t contact the sound lens during ler battery during FWD projection 3 The 7 should rotates emoothly and have no flaw and no oil etic playback 4 The 3 is a stopper used for only optical film playback and has no respect to maj The 8 Then check wow and flutter with optical tes
22. ISASSEMBLY 1 remove the 1 unhook the 3 from ta point and unscrew the 4 x2 2 To remove the 2 after removing the 6 in Fig unhook the 7 from b point and unscrew the 8 x2 REASSEMBLY NOTES 1 When attaching the 1 make a clearance of 2mm as shown in Fig 23 A 2 Make sure that the 6 can come ON whenever the solenoid 1 works 5 Attach the 2 in place where the spring pressure of pad roller lever is within 250 5005 Refer to Page 46 Adjust the 9 position that the 9 can come ON whenever the solenoid 2 works The 1 2 will burn if the 6 9 are out of position 5 Take best care when handling the 3 7 49 H Magnetic Sound Adjustment 1 Head Position Adjustment Test film Pre striped film recorded a AKHz signal at 24 fps P027 Instruments Distortion meter and resistor box 8 ohms 40W P045 Adjust the position in place where the output obtained from each track is maximum by looseni or tightening the 2206 2 Rated Output both tracks 1 amp 2 10W 9 Maximum Qutput 2 154 119 Test film Instruments Pre striped film 4 Oscillator distortion meter and resistor box 8 ohms LOW P045 Record a 400Hz signal with 0 VU controlled by AUX volume knob at 18 fps b Play back the signal with maximum volume The output should be more than 11V Readjust the head position if less than 11V H Magnetic Sound Adjustme
23. d Since the output at 2 pin becomes 1 that at 3 pin changes to 0 and SYNCHRONIZATION The residual electric charge in C405 is a control output If the motor runs fast the charge of C405 decreases 1f the motor runs slowly the charge of C405 increases Synthesis electric charge is smoothed and it is led to split circuit of ESS reference voltage Constant voltage Start signal pi igna Loss of 5 pulses 0401 Tesis output at beginning of Split starting ESS ref voltage 109 that at 4 pin becomes 0 Therefore the output at 6 pin keeps 1 n f ESS Circuit Cont d ESS Circuit Tape Voltage at each pin No pulse from tape When negative pulse puts Still condition vinto 13 pin from tape A point as far as A point is High 9 10 pin o 8 pin Charged The output at A point returns to Low 12 15 pin after the time fixed by time constant 11 9f C403 amp R404 and the projector returns C405 i to the still condition Pulse Recording Power Supply Circuit Dan C303 12v Pulse Circuit ON LOW HIE OFF FWD REV STOP 7 317 Tr516 D311 Pulse Rec Power OFF ON 12V N ON OFF ov OFF Projection 8 OPERATION SWITCH UNIT 1 TROUBLESHOOTING Refer to Fig 44 The 1 is out of position Attach the 1 pushing it u
24. d red 3 For further disassembly refer to Fig 35 REASSEMBLY NOTES 1 Follow the reverse vay of the disassembly steps 2 Apply the grease to all gears 3 When tightening the 12 x2 align the screw holes of 13 15 with each other After reassembly of the 1 make sure that it functions smoothly without unevenness 5 The 5 can rotate in one direction only because the roller clutch is used in it 5 BASE FRAME SECTION A Counter Gear 1 and Rewind Swiich TROUBLESHOOTING Refer to Fig 34 Migh speed rewinding mechanism isn t workable Film counter malfunctions Defect of the 11 T proper position of the 10 Fig 35 Trouble in circuit Slip of the 7 or defect of the 7 8 9 Turning of the 7 8 9 is interrupted by wires DISASSEMBLY 1 Unscrew the 2 x2 and take off the 1 2 Unscrew the 4 and take off the 5 3 Unserew the 6 and take off the 3 4 For further disassembly refer to Fig 34 REASSEMBLY NOTES 1 Follow the reverse way of the disassembly steps 2 When disassembling the 1 reassemble it with backlash between 7 and 8 3 Make sure that the 11 turns on exactly when the 5 is pulled for high speed rewinding FIG 35 69 FIG 36 B Main Motor 1 and Fan Motor 2 TROUBLESHOOTING Refer to Fig 36 rotation of 1 and or 2 Defect of 1 2
25. dless of B 100 sun AxB X gt 1919 9 NAND gate ABX D z X is inversion of X of AND gate 101 110 EQUIVALENT GATE 94 a Logical Circuit Cont d 95 GATE COMBINATION RS Flip Flop RS F F ne Shot 9 po Q x This circuit is vorkable by the input of only 0 pulee 5 0 Q will be 1 _ When R is 0 Q will be 0 9 is the inversion of Q R i Don t apply input of 0 to both S and Inhibited input Transition Chart RESET When 0 pulse is given to A the plus wave continues to come from X for the period of time pre controlled by C R a Logical Circuit Cont d STATE OF THE PROJECTOR Correlation between operation and signal at each point of ICs TIT momen Signal dane piene in Circuit Diagram FWD Fo REV o REV FWD STILL FWD STILL o REV STILL Remark Should be read the FWD and FWD signal as FWD STILL and FWD STILL respectively in the control circuit diagram going to Amplifier These FWD and FWD are muting power on recording 96 97 Logical Circuit Cont d GATE CIRCUIT USED IN THE GS 1200 Control Circuit for FWD and REV Sontrol Circuit for FWD and REV FWD IN FWD STILL REV IN STOP IN REV STILL STILL IN Tim
26. e Frequency counter box B ohms 40W Weight 1 7 kgs Weight 1 1 kgs Dimensions 90 x 190 x 200mm Dimensions 130 x 135 x 180mm Page 86 Page 49 50 51 52 5 55 56 ee Code 6043 Code No Name Bar spring scale 1105 Name 2 Claw tip length gauge tome Weight 105 Weight 5 76 Dimensions 10 dia x 280mm Dimensions 60 x 8 x Imm Page 20 24 40 46 60 64 Page 1 24 Code Code P057 Bar spring scale 1 kg Name Current check cord Weight 10g 37 dia x 180m Dimensions 25 5 x 6 x 120mm 24 Page 16 Code No P055 Code No 58 Name Claw adjust driver Name Trap coil adjust bar Weight 70g Weight 7g Dimensions 23 dia x 70mm Dimensions 8 dia x 120mm Page 164 Code No P056 Code No P059 Name Board connection cord Name 2 CirewWii check cord Weight 85g Weight 32g Dimensions 300mm long Dimensions 800mm long Page 103 152 Amp board Control board Amp board l Amp board 2 for connecting and grounding the circuit II TEST FILMS amp OIL GREASE A Test Films Pre striped film AKHz signal recorded at 24 fps Super 8 optical frequency response film 400Hz Supe
27. e arrow direction with a scale C045 The measurement timing is moment the 2 goes just away from the 5 The range of 70 80g is optimum For this adjustment bend the 2 Make sure the 2 is not pushing the 5 2 Check the pressure of pad roller lever Fig 22 1 while pulling it in the arrow direction with a scale P026 The measurement timing is moment the 1 s roller goes just away from the capstan The range of 250 300g is optimum For this adjustment change the position of the 2 in Fig 25 3 Check the pressure of middle tension Fig 22 3 while pushing it in the arrow direction with a scale C045 The range of 30 40g is optimum For this adjustment change the position of 4 Notes 1 The adjustment of pressure of film presser is effective for forming loop during optical film playback The excessive pressure however may cause film scratch and vow 2 The adjustment of pressure of pad roller affects sound picking up during recording or playback 5 The adjustment of pressure of middle tension is not effective for decreasing large wow 47 FIG 23 A FIG 23 Head Pi So id 1 and Pad Roller Lever Soleno 2 TROUBLESHOOTING Refer to Fig 25 Wow Flutter The fi B are out of position The 3 7 s pressure is insufficient Solenoids 1 2 don t work The qua burnt the 6 9 are out of position or defective Page 99 Trouble in the electric circuit D
28. e microphone will not catch any projector running Level Meter of Constant Level There is an exclusive amplification circuit not affected by volum added to the amplification circuit for the speaker system The level meter can indicate the level of recorded sound as it is add other sound vith equal level Refer to Pages 156 and 157 e Lone position for the AUX OUT Level Meter system With this facility it is easy for operator to Mating Circuit a For playback To reduce or eliminate the noise click noise on switch ON OFF operation and other noise control signal for muting flows into the overload transistors 17101 Tr201 which are used for the ALC circuit on recording The muting system works on STOP REV STILL AUTO THREADING but it does not work when the PA switch is ON Refer to Page 158 b For recordin Photo coupler is used in order to mute the recording current This photo coupler turns ON muting is released when not only the REC button but also FWD button is pushed Therefore when only the REC button is pushed recording current doesn t flow into sound head Refer ts Page 161 Bias Control To reduce click noise on recording the bias oscillator works when not only the REC button but also the FWD button is pushed Recording Amplifier Tr102 Tr202 To aboid the tone control on recording there is an exclusive amplifier for recording To compensate the phase shift between each input output terminal for stereo
29. ecord 400Hz signal with 0 VU controlled by the AUX volume knob Rewind a part of recorded film and record no signal with minimum volume on the part i e this work is erasing the 400Hz signal b Play back a A00Hs signal with 9V output controlled by the main volume knob and when the part of no signal comes to the sound head read the indication of the distortion meter set to level range 6 Difference in output between tracks 1 amp 2 Test Film Pre striped film Instruments Oscillator distortion meter and resistor box 5 a Record 4002 signal with 0 VU on each track b Play back the signal with zero volume on each track Difference in output between them should be less than AdB VU e 1f not readjust the head position H Magnetic Sound Adjustment Cont d 7 Sound Transfer from one track to another Test film Pre striped film Instruient Oscillator Record 400Hz signal with 64 VU on track 1 Make sure of no oscillation when transferring the signal to track 2 with less than OdB VU Check up track 2 in the same manner as above b If oscillation occurs while your transferring the signal to another track within VU the sound head output is insufficient and therefore readjust the head position Frequency Response Test film Pre striped film Instruments Oscillator distortion meter and resistor box 8 ohms P045 Record 400Hz s
30. ess and rattling Spring Scale C043 Film FIG 30 TAKE UP AND REWINDING SECTION Motor Assembly 1 TROUBLESHOOTING Refer to Fig 30 insufficient torque of the 2 Change the position of Hiptkpek pale wire from 3V to 4V terminal transformer 27 Take up mechanism malfunctions Defect of the 2 or circuit trouble entirely Slip of the 8 or defect of gears 10 11 x Improper engagement between 8 and 11 Noise during forward projection of the 1 or its improper position DISASSEMBLY Disassemble the parts in accordance with order of the reference number referring to Fig 30 REASSEMBLY NOTES 1 Follow the reverse way of the disassembly steps 2 The 1 should run by DC AV with consumption current of under 140mA without any load Use DC stabilized power supply C004 for check 3 The 1 should be attached to the position where it runs by DC 4V with under 300mA current without any noise When the position of vire on transformer is changed check and adjustment for rewinding is required Refer to pages 6 and 66 5 Take up tension at 800ft reel core should be within 45 5kg Use a bar spring scale 6043 6 Since no slip mechanism is applied you adjust the take up rewinding power with supply voltage from 3V to AV B Rear Arm 1 TROUBLESHOOTING Refer to Fig 51 Take up mechanis
31. ference between 35V and 12V while the projection lamp is being preheated LAMP CIRCUIT While the main motor is running the positive potential is generated by D306 D307 and D308 It turns Tr315 on and RY303 works SL CIRCUIT For actuating the SL s current flows from RECT303 304 35V Sw507 SW308 SW309 into SL s because their attraction power is insufficient Once Sb s work they continue working with current supplied from RECT302 12V Decreasing the current prevents SL from overheating 100 101 FWD Starting Circuit a Starting Cirenit i He b FWD Circuit Cont d EWD STARTING CIRCUIT Refer to Page 101 l By pushing the FWD button voltage at each pin changes as shown in the circuit diagram on Page 101 and FWD projection starts 2 Even when FWD button is released voltage at A pin of 10302 returns to High FWD projection goes on because voltage at 5 pin 16302 is Low and that at 6 pin 16302 keeps High 3 Even when REV button is pushed voltage at 2 pin of IC301 changes to Low FWD projection goes on because voltage at 3 pin 16501 is High and that at l pin 16301 keeps Low By pushing the OFF STOP button voltage at each pin is inverted and FWD projection stops accordingly 102 c REV Starting Circuit FWD He 0 STILL FWD REV Circuit BEV Starting Circuit EU AE See REV STILL 105 toe REV STILL By pushing t
32. g works Attach gear so that there is a backlash 33 2 61 Go Don t damage the 36 s wires If they short fuse will burn FIG 5 A Aperture Plate 1 TROUBLESHOOTING Refer to Fig 5 Unstable picture right leftward The spring pressure of the 4 is improper Picture inclination Unstable picture Picture out of position right or left Unstable picture new printed film The 7 is out of position or worn out as shown in Fig 5 A b The 5 s position is improper DISASSEMBLY 1 Remove the film insertion entrance first sprocket shoe first sprocket and guto threading button referring to Page 32 2 Unscrew the 3 6 x3 and remove the 1 REASSEMBLY NOTES Before attaching the 1 to the machine frame make sure that the aperture plate rail has no flaw and that the 5 moves smoothly without burrs or camber 2 Follow the reverse way of the disassembly steps When attaching the 1 to the machine frame tighten the screws 3 and 6 x3 in this order After fixing the 4 to 5 measure of the spring pressure 30 40g at point in Fig 5 A Use a spring scale C043 Attach the 7 with 8 x2 in place where the image can appear fully in every direction without inclination 21 C Sending Claw Assembly 1 and Shutter 3 TROUBLESHOOTING Refer to Fig 6 Cause Shutter flows Picture trails The 3 is out of positio
33. he REV button voltage at each pin changes shown in the circuit diagram and REV projection starts Even when the REV button is released REV projection goes on because voltage at 2 pin 10302 is Low and that at 3 pin 10502 keeps High Even when the FWD button is pushed REV projection goes on because voltage at 5 pin 10301 is High and that at 4 pin 10301 keeps Low In REV projection the pulse circuit does not work because voltage at l pin 10505 is High and Trhog turns the pulse circuit off By pushing the OFF STOP button voltage at each pin is inverted end projector stops LAMP CIRCUIT While main motor is running positive potential is generated by D306 D307 and Then Tr515 turns on and RY303 works SL CIRCUIT Since the output REV STILL is High Tr304 turns on and RY302 works 7 306 turns on SL302 turns the 50507 off and continues to work by the current supplied from RECT302 105 d STILL Funciion Circuit When you push the STILL button each input of FWD OFF and REV is cut regardless of their position soon as you push the STILL button each input and output at pins of 16305 changes as follows Pin No Voltage 8 pin High ll pin High D l3 pin FWD STILL Low regardless of 12 pin voltage lo pin REV STILL Low regardless of 9 pin voltage o STILL l pin FWD STILL High STILL projection starts STILL ON FWD STILL FWD o AWO
34. ignal with 0 VU controlled by AUX volume knob at 18 fps and record a 2KHz signal without changing the AUX control knob position b Play back the 400Hz signal with OdB controlled by main volume knob observing the indication of distortion meter Play beck the 2KHz signal without touching the knob and read the indication of the meter This indication should be between 2dB and AdB Refer to the graph concerning other signals tolerance FIG 24 53 FIG 25 FIG 27 I Optical Sound Adjustment TROUBLESHOOTING Refer to Fi 25 26 amp 27 The 2 s light does not come correctly to the 1 Unable to play back optical sound pere ay Improper of the 3 as shown in Fig 26 B 3 Unable to play back high frequency range Stein on 3 Played back the sound of poor quality Insufficient volume during optical playback Noise during optical playback The 5 is out of position as shown in Fig 26 1 Position Adjustment of Solar Battery Sound Lens and Exciter Lamp Test film Pre striped film recorded a 4KHz signal at 24 fps P053 Instrument Resistor box 8 ohms 40W P045 Turn on the exciter lamp and adjust the position of sound lens tentatively by turning screws 5 6 in Fig 27 so as to have the focus of scanning beam on the 1 as shown i
35. in Fig 20 e Then fix the 1 tentatively with 2 x3 in place where the 1 not only contacts with tat points but is away by 0 8mm from b point 2 Adjust the head position so that the film runs straightly from 3 toward 4 3 Locate the 1 as shown in Fig 21 and tighten it Fig 21 shows the film should pass not along the extention line but avay from the line by 0 The film shouldn t touch the 5 except 5 s side surface and the 6 shouldn t touch the 5 IMPROVEMENT INFORMATION Improvement of Machine Frame Assembly will be performed as under Trouble Countermeasure 1f the film is incorrectly spliced with tape The pressure plate fixer P No P413946 22 on Page 33 the spliced part may be doubled when it reaches applied and the film presser assembly P No ihe place where the loop is to be formed causing APBGSO028 is replaced by the new one B No kPBGS0028B that the film stops on the way or that loop is The 25 on Page 35 is attached more closely to the getting shorter projection lens GPS AAS By attaching the film side presser stopper r No P1395 9 on Page 19 the movenent of 5 is limited 45 FIG 22 Spring Pressure Adjustment Adjust each spring pressure of film presser pad roller and middle tension in order to decrease wow and flutter and to stabilize the optical sound playback 1 Check the pressure of film presser spring Fig 22 2 while pushing it in th
36. ing Chart 1 REV input is not effective even if REV button is pushed during FWD projection FWD IN REV IN 2 FWD input is not effective even if FWD button is pushed during REV projection STOP IN STILL IN 3 The state of FWD Flip Flop doesn t change even if STILL button is pushed 1 while the FWD F F is set but final b output FWD STILL is stopped until STILL button is pushed again FWD Th REV is the similar function to FWD REV 5 F F FWD STILL sii ru xk NOTE REV STILL E J 1 All inputs FWD STOP REV are raised to High when STILL button is once pushed 99 Ty 301 D306 D307 wo b FWD Circuit Refer to Page 99 FWD PROJECTION 1 When you turn FWD switch on the output FWD STILL will be changed to High by operation of FWD starting circuit 2 Current flows in RY301 and the main motor starts running 61502 for heat proof gla 3 A bit late 51504 for pinch roller and 81505 for head presser work Since Tr307 is ON during optical projection the SL303 does not work works DURING AUTO THREADING 1 Since Tr313 ON Tr315 does not work and projection lamp does not light Fan Motor doi speed 2 Since Tr310 is ON neither Tr312 nor SL304 works 3 Since Trj07 ie ON neither Tr309 nor SL303 works not run at high FAN MOTOR The motor turns slowly by the potential dif
37. ing to Fig 2 REASSEMBLY NOTES Follow the reverse way of the disassembly steps C Amplifier Cover 1 DISASSEMBLY Refer to Pig 3 1 Pull out the ten knobs 2 pos each of the B 3 4 5 ana 1 pce each of the 6 7 They are inserted rather hard 2 Unscrew the 8 x3 and take off the 1 after disconnecting the 9 REASSEMBLY NOTES 1 Follow the reverse way of the disassembly steps 2 Difference in color among knobs is as follows The 5 is black with a white line The 6 is silver with a yellow line The 7 is silver with a red line 2 MACHINE FRAME SECTION A Machine Frame Assembly 1 TROUBLESHOOTING Refer to Fig 4 Cause Reference Defect of the 16 or its electric circuit The 16 is out of position Defect of the 25 or its electric circuit The gears 12 19 22 29 have burrs or dust Unable to set back auto threading condition causing irregular turn Page 18 Wow Flutter Wash off the dust or replace gears REASSEMBLY NOTES The 6 is incorrectly positioned No 2 The 6 is out of position Time when sound becomes normal is too long DISASSEMBLY l Take off the parts from the 2 to 12 The 13 will fall off 2 Unsolder the two wires connected to the 16 from the relay board You however may remove the 16 after unscrewing the 14 x2 3 Take off the 17 20 19 22 respectively The 18 21 will fall off 4 Unsc
38. lace where the maximum illumination appears without unevenness Contract of lamp socket FIG 39 75 ANSWER YES NO Applied voltage is OK Switches 50510 2 amp 5 and wires are OK Relay RY303 is defective Page 78 77 GL B BLO V BRB R Y ES FIG 40 F Transformer TROUBLESHOOTING Refer to Fig 40 amp Pilot lamp doesn t light Defect of the 1 or breaking of the 5 Main motor doesn t turn Defect of the 1 or breaking of the A Take up motor doesn t turn Defect of the 1 or breaking of the 5 Fan motor doesn t turn Defect of the 1 or breaking of the 6 Main motor turns only slowly Defect of the 1 or breaking of the 6 lifier isn t workable 2 iat axeiter lamp Lights Defect of the 1 or breaking of the 7 DISASSEMBLY 1 Unsolder the sixteen wires from the 1 Note that a brown wire is unsoldered from the 3 2 Unscrew the 2 x and remove the 1 REASSEMBLY NOTES 1 Follow the reverse way of the disassembly steps 2 Make sure that each wire is surely connected in place 3 Refer to the under list when trouble happens in the take up revind motors The combination of the unloaded power supply voltage for the motors have been changed at two times Voltage at terminal Voltage at terminal Applied Gs 1200 about 3 8V about 4 6V initial prod
39. m e qe of the 5 10 11 18 Noise lack of grease at the 10 15 16 and their shafts DISASSEMBLY 1 When repairing the inside only of rear arm unscrew the 8 x2 and remove the 9 2 When detaching the whole rear arm take off the transformer Refer to Page 78 need not unsolder the vires on it 3 Unsolder the two wires blue and red 4 For further disassembly refer to Fig 31 REASSEMBLY NOTES 1 Follow the reverse vay of the disassembly steps 2 Apply the grease to all gears 3 When tightening the 12 x2 align the screw holes of 13 15 with each other 4 After reassembly of the 1 make sure that it functions smoothly without unevenness 5 The 5 can ratate in one direction only because the roller clutch is used in it FIG 31 65 FIG 32 Rewind Motor Assembly 1 TROUBLESHOOTING Refer to Fig 32 The 1 s torque is insufficient Change the wire position from to AV terminal on transformer Excessive torque of the 1 Tighten the lst sprocket Film is wound loosely into feed reel in REV pem loop is lost during REV projection Noise from the 1st sprocket in REV Fig 13 2 firmly Attach the two diodes 181887 as shown n Fig 33 A in order to lower the supply voltage Improper engagement between B and ity Improper position defect of the 1 Defect of the 2 or circuit trouble Slip of the 8 or defect of the 10 1
40. n The claw tip doesn t protrude fully from the perture place surface 1 0mm is proper Page 24 notis E Cem 6 7 10 is improper Page Unstable picture up downward The spring pressure of 6 7 10 is improper Page 24 Unstable picture left rightward The 1 is out of position Page 9 Unstable picture sent backward the claw tip protrudes excenssively Page 2h stow running 011 adheres to the pulley of the 3 DISASSEMBLY 1 Take off the 3 after unscrewing the 2 x2 2 Take off the 5 after unscrewing the 4 x2 3 Unhook the 6 7 Take off the 9 after unscrewing the 8 and then remove the 1 The 10 11 will fell off 5 For further disassembly refer to Fig 6 23 Machine Frame Section FIG 7 c FIG 7 1 5 2 0mm FIG 7 A FIG 7 B C Sending Claw Assembly 1 and Shutter 3 Cont d REASSEMBLY NOTES 1 2 3 5 Replace the claw or pin if they are worn out as shown in Pig 7 Attach the 13 with 12 to 14 in place where there is the clearance 1 5 2 0mm as shown in Fig 7 B Use a tool P055 Attach the claw to the 12 13 1 assembly with 11 10 9 after checking the claw is straight Measure the spring pressure of 10 at the a point and in the a direction using a scale C043 The proper pressure is at the range of 60 70g If improper adjust it with use of
41. n Fig 25 The lens shouldn t touch the capstan Adjust the position of the exciter lamp with 7 8 eo that the lemp filament is aligned with light axis of the lens as shown in Fig 27 Run the projector with film and play back the signal with maximum volume To obtain the maximum output adjust the sound lens position by turning or sliding the lens back or forth after loosening the 4 and by tightening or loosening the 5 6 Refer to Fig 26 A 55 1 Optical Sound Adjustment Cont d 2 Rated Output 10W 9V Maximum Output 15W 11V Test film Optical super 8 frequency response film A00Hz P051 Instruments Distortion meter and resistor box ohms 40W P045 Play back the signal with the maximum volume at 24 fps Make sure that the output is more than 11V If not make readjustment on Page 54 3 Distortion Factor less than 4f Ratio 3 less than 45dB Test film Instruments Optical super 8 frequency response film 400Hz P051 Distortion meter and resistor box 8 ohms 40W P045 a Play back the signal with 9V contri the distortion meter at 24 fps At this time read the indication of the meter set to distortion range o This shows distortion factor olled by the main volume knob observing the indication of b Take off the film from the projector without changing the volume position Run the projector again without film and read the indication of the distortion meter set
42. n t smooth in the 2 s core slit owing to deflection of it 3 When the movement distance of the 2 s core readjust the position of 2 6 1 as follows and 4 ct and tat Attach the 6 pushing it in the direction of Attach the 2 pushing it in the direction of Attach the 1 pushing it in the arrow direction D FIG 38 Film Guide Assembly 1 and Take up Guide Assembly 6 TROUBLESHOOTING Refer to Fig 38 Unable to set back the The e is out of position or defective auto threading condition The 5 malfunctions Film scratch Flaws or poor turning of the 3 4 8 9 10 DISASSEMBLY 1 Unscrew the 2 x5 and remove the 1 2 To remove the 6 take off the amplifier cover Page 14 and unscrew the 7 x2 3 For further disassembly refer to Fig 38 REASSEMBLY NOTES 1 Follow the reverse way of the disassembly steps 2 Make sure that each roller rotates smoothly 5 Make sure that the 5 works perfectly after its reassembly Projection Lamp Socket Assembly TROUBLESHOOTING Refer to Fig 39 Unstable lighting Defect of the 12 15 14 THE LAMP DOESN T LIGHT Difficult to replace the lamp Defect of the 1 6 is out of position gt 1 eneven illumination DISASSEMBLY Refer to Fig 39 REASSEMBLY NOTES Adjust and tighten the 1 s position with 2 x2 in p
43. nt Cont d 3 Distortion Factor both tracks 1 2 less than Af atio track 1 i less than 50dB less than 454B Test film Pre striped film Instruments Oscillator distortion meter and resistor box 8 ohms 40W P045 including weighting of 11dB a Record a 400Hz signal with 0 VU controlled by the AUX volume knob b Play back the signal with 9V output controlled by the main volume knob and read the indication of the distortion meter set to distortion range This shows distortion factor t Stop the projector and remove the film with care to keep the volume position d Run the projector again without film and read the indication of the distortion meter set to level range This shows S N ratio Cancel Coil Fine Adjustment noise level less than 20mV both tracks 1 amp 2 including weighting Instruments Distortion meter and resistor box 8 ohms 40W P045 a Run the projector motor switch ON lamp switch ON maximum volume and adjust the cancel coil position observing the indication of the meter When the indication is less than 20mV the position is OK b This adjustment is applicable to both tracks 1 amp 2 51 H Magnetic Sound Adjustment Cont d 5 Erasing Effect both tracks 1 amp 2 less than 40dB including weighting of 114 Test Film Pre striped film Instruments Oscillator distortion meter and resistor box 8 ohms 40W P045 R
44. on or uneven running of 7 10 12 Flaw or eccentricity of the 19 Film scratch Flaw on the 19 Malfunction of loo The 25 is out of position Attach the 25 while depressing it in the Front cover doesn t close direction DISASSEMBLY 1 Remove the exciter lamp Refer to Page 54 for reattaching it 2 Remove the drive flywheel spring Fig 23 3 from a point and Solenoid I Spring I Fig 23 7 from b point Then disassemble the parts by following the order of number in Fig 15 3 Remove the 17 11 Then pull out the 19 while depressing the 18 downward and holding the 15 Don t touch the cancel coil attached to the 21 in disassembling work 5 care for handling of 1 7 10 12 19 REASSEMBLY NOTES 1l Follow the reverse vay of the disassembly steps 2 Make sure that 1 7 10 12 19 have neither flaw nor dust on their surfaces 3 Attach the 1 with 26 x3 tentatively Then fix it after adjusting each backlash of 7 10 12 After attaching the 12 pull it in the arrow direction 5 When detaching sound frame with the above procedures check spring pressure of the head presser Fig 17 10 on Page 40 position of the head presser Fig 23 1 on Page 48 and position of switch ON Fig 23 A on Page 48 6 After completing the assembly work make sure of no bum For this adjustment change the position of the cancel coil cA FIG 16 B FI
45. ower loop isn t formed Unable to set to STILL E 10 105 106 114 gt Loup sensor function is defective ESS sync defective bud Unable to set to the auto threading ESS malfunction 82710 110 111 5 Unuble to release the auto threading Speed of FAST SIOW isn t adjustable y eec Wertes i terrupted uvto threading Mable B m amp play buck ESS pulse 82 a L ke ni e Solenwids fur head presser amp pid rolle Image trails 22 lever don t vork IP Slow running 22 28 5 Lamp relay isn t workable 80 Take up is defective Unable to shift 18 24 fps 82 Take up power is weak e 5 Unable to fine adjust speed of 18 24 fps 82 piwi ie bou apa b Main motor revolution is out of regulated pp gt gu B6 Rewinding is defective 64 number D Rewinding poris te Yen 2 No power though power switch is UN 80 7 Rewinding power is too strong 64 66 Unable to shift MAG OPT system 116 3 High speed rewinding is defective 68 5 Unable to shift STEREO MONO system 116 amp Noise from rear arm 62 2 button malfunction 118 i Vn NOR EE md 5 Spot recording button malfunction 118 C n 8 Volume knob turn isn t proper 118 gt Slow running of main motor Him damage in still projection 6 tps 72 does Utm Film counter isn t workable 68 2 Noise from fan motor Pilot lamp doesn t light 78 Speed of fan motor isn t changed Noise in fo
46. pward Motor doesn t run though E ND tee The 5 9 are defective or connectors are half connected Motor doesn t stop though operator pushed OFF button The 6 10 are defective or connectors are half connected Motor doesn t run though operator pushed REV button The 7 11 are defective or connectors are half connected STILL projection system isn t workable though operator The 8 12 are defective or connectors are half connected pushed STILL button DISASSEMBLY 1 Unscrew the 3 x2 and lift the 2 up slightly Don t touch the cancel coil on the 2 2 Unscrew the 4 x2 and remove the 1 3 For further disassembly refer to Fig 44 REASSEMBLY NOTES 1 Follow the reverse way of the disassembly steps 2 Make sure that each button and switch functions well 115 9 AMPLIFIER SECTION A Amplifier Assembly TROUBLESHOOTING Refer to Fig 45 _ Unable to shift MAG OPT The 4 is defective y Unable to shift STEREO MONO The 5 is defective DISASSEMBLY 1 Unscrew the 2 x4 and pull out the 3 after cut a beaded binder The toothed lock washers are used under the 2 2 Remove the 1 pulling it toward you Note that the connected to the projector with connector 3 For further disassembly refer to Fig 45 REASSEMBLY NOTES Follow the reverse vay of the disassembly steps FIG 46 A Amplifier Assembly
47. r 8 optical frequency response film 4KHz Resolving power film B Oil Grease The mark in disassembly drawing shows you the point to be lubricated ihe letters A B C D amp in the mark show you the kind of oil grease as listed below Use the regulated oil grease to keep the projector in the original condition III DISASSEMBLY STEPS Front cover Page 10 Machine frame Page 16 Rear cover Page 12 Cancel coil printed e circuit board Page 36 1 Main motor Page 70 cuve Page 72 Fan motor Page 70 Heat proof glass Page 72 Film guide Page 74 Rewinding motor Page 64 Front am Page 66 Combination head Page 42 aspiistier cover Page 14 Amplifier Page 116 Light section 76 contro circuit board Page 86 H xac guide Page 74 circuit board Page 82 Power switch block Page 8 Hprake up motor Page 60 H Rear arm Page 62 Head presser solenoid amp Pad roller lever pressing solenoid Page 48 Cancel coil printed circuit board in case that you need not remove sound frame Page 36 Operation switch block Page 114 TOLERANCE Spring pressure of pressure plate Measurement Hook a scale 110g COL3 on a film and hold it up
48. rew the 25 and remove the 24 You need not unsolder the wire connected to the 24 5 Unsolder the two wires from the 25 N 6 Unscrew the 26 and remove the 27 7 Remove the 28 As holding the 29 and pushing the 34 down pull out the 35 The 50 51 32 will fall off 8 Unscrew the 35 and remove the 36 You need not unsolder the wire connected to the 36 9 Unscrew the 37 and remove the 38 10 Unscrew the 39 xh take off the 30 and remove the 1 16 A Machine Frame Assembly 1 Cont d REASSEMBLY NOTES 1 2 Follow the reverse of the disassembly steps After adjusting the engagement of the 6 and 41 tighten them with the 5 temporarily The 6 is naturally in contact with the 4 and the 4 is able to turn by the 6 Adjust the attaching position of the 6 and fan motor No 2 on Page 69 so that the 6 can get away from the 4 as soon as FWD button is depressed After this work tighten the 6 firmly Attach the 16 in place where it turns on when an auto threading button No 1 on Page 30 is depressed Attach the 2 in place where the reed switch on it can turn ON in the ratio of 1 time l frame Use a tester for the above checking After attaching the 29 28 make sure that a surface of the 29 is in contact with the 28 closely If not pull the 29 in the arrow direction in Fig 4 A Make sure that gears have no crack and no dust prior to the attachin
49. rwarding 60 Take up amp rewinding motors don t run Noise in reversing 6 66 Trouble Unable to playback Unable to record on track 1 or 2 141 142 Poor sound quality Unable to record on both tracks 145 Small sound Unable to erase sound on track 1 or 2 40 144 Hum Unable to NORMAL record on track 1 or 2 145 Unable to playback high frequency range DOUBLE recording is 0 Oscillation ALC of track 1 or 2 isn t vorkable 145 Wow Flutter 5 Neither ALC is workable 145 Quick sound start system won t work 8 No deflection of level meter 1 or 2 146 Wow Flutter 16 28 32 36 Recording itself is 0K 38 40 42 46 Unable to DOUBLE record on track 1 or 2 146 48 58 86 NORMAL recording is OK Poor sound quality 12 40 High frequency range isn t played back 40 42 Solenoid 1 or 2 doesn t work 147 Unable to playback 12 75 118 Neither solenoid works 148 a 123 124 125 This 1 or 2 won t work though FwD 149 sound thru speaker track 1 125 z button is pushed together REC button sound thru speaker track 2 124 Both of them won t work through FWD 149 sound thru speaker both tracks 125 button is pushed together REC button E Bst of level meter 1 or 2 197 Soot recording performed 149 a Neither level meter swings 19 Other recordings are 0K ORE ied dim S vibrates with REC 149 signal from AUX QUT
50. s play among the 1 and 14 18 owing to abrasion in the direction of its shaft The 1 s stroke is insufficient Flaw on the as cam surface Running noise Flaws on the 1 3 The 1 turns irregularly owing to eccentricity of the 14 18 Slow projection speed Oil which is lubricated among 1 and 14 18 becomes insufficient ESS sync is defective The 5 is defective or out of position DISASSEMBLY 1 Pull out the 1 after loosening the 2 x2 4 x2 The parts from 3 to 9 will fall off Take care not to mar the 3 with flaw and not to put oil on 2 Unscrew the 10 x5 and remove the 11 12 13 14 15 You however had better not take off the 11 because its center gets out of position except unavoidable case The 15 of 0 3mm 2 pes or 0 5mm 1 pee thick is used 3 Unscrew the 16 and remove the 17 18 REASSEMBLY NOTES 1 Make sure that the cam surface and its shaft have no flaws 2 After checking there is no play among the 1 and 14 18 attach the 14 18 to the machine frame Adjust the am turn by changing the 18 position to see that the 1 can turn smoothly without unevenness 3 Attach the 1 9 8 7 6 3 5 to the machine frame simultaneously 4 Adjust the 3 s position with the 2 x2 so that the 1 can turn emoothly without rattling and unevenness in the direction of the 1 s shaft 5 For further assembling works refer to Page 22
51. ser Solenoid amp Pad Roller Lever Solenoid 48 N Magnetic Se d Ad jumtment n 1 Optical Sound Adjustment 54 J Capstan amp Second Sprocket 58 4 TAKE UP amp REWINDING SECTION 60 Take up Motor csescesssessees 60 B Rear 62 C Rewind G4 D Front 66 Page 8 OPERATION SWITCH UNIT is 9 AMPLIFIER SECTION ee 116 A B c VII BLOCK CONNECTION amp CIRCUIT DIAGRAMS Amplifier Design Switches Jacks Variable Resistors amp Connectors 121 Troubleshooting seven 125 Circuit Analysis 155 Recording Bias Current Adjustment 164 Block Diagram of Governor amp ESS Circuit 165 Control Circuit Block Diagram Amplifier Block Diagram Amplifier Circuit Diagram layout Drawing of Amplifier Printed Board 1 amp 2 170 Machine Circuit Diagram 172 layout Drawing of Control Circuit Board Code C004 Code No P026 DC regulated Nane Name 3 Bar spring scale 500g Weight 5 8 kgs Weight 110g Dimensions 105 x 160 x 220mm Dimensions 37 dia x 180mm Page 60 64 7 Page i 92h 46 Code 6005 Code No Nam
52. sser 2 22g Use a tension gauge 50g C063 45 Spring pressure of back tension roller 70 806 Use a tension gauge 200g 45 pressure of arm T scratch Hook a scale 2 kgs PO46 on arm tip Noise Hurtful scratch shouldn t appear after 10 times running of black film Away from aperture plate at 1m in 2 fps projection Tilting angle Horizontal correcting angle over 19 Picture size 50cm in width Adjustable over sum Insulation resistance over 10 megohm Use a 500V megger Amp output 18 fps Track 1 94 fpa Frequency MAG Record signals with 0 W at 18 fps Use Toyo film when checking at 24 fps ss Transferring recording over 6 dB Transfer at VU a 400Hz signal recorded Track 2 over 45 dB Rating 10W 8 ohms output thru A W N circuit 49 a over 45 dB i MAG BuU Rating 10W 8 ohms output a9 pe bet less than 4 yit 2 Speed 18 fps Input 0 WU 51 ph Wack less An Rating 10W 8 ohms output thru A W N circuit MAG both tracks laus Hun 20aV to FWD thra AWN circuit o Rotes less than 20aV Maximum volume F WID less than 0 5 Wov Flutter CCIR LINE less than 0 7 Record at 18 fps Move sprocket at 12 teeth less than 0 4
53. stan axis Dry D Combination Head 1 TROUBLESHOOTING Refer to Fig 18 Magnetic recording playback erasing are faulty The 1 is worn out or out of position Wow Flutter Low output level The b is out of position Film scratch Film stops in auto threading The 3 is defective The 9 is out of position The 9 is out of position DISASSEMBLY 1 Unscrew the 2 x2 4 x2 and disassemble the 1 5 5 The 1 5 are assembled with Cemedine 575 2 When replacing the 1 unsolder the seven wires from the 1 Refer to Fig 19 RPH 5 For further disassembly refer to Fig 18 RPASSEMBLY NOTES 1 Put the 1 in the 5 and fix them by applying Cemedine 575 to point end Alone Alpha to b point while pushing the 1 in the arrow direction 2 Attach the 7 to the 1 with Cemedine 575 as shown in Fig 18 A 3 Insert a conventional washer 2 5mm between the 3 amp 9 and fix them tentatively After making sure that distance L equals to L with a vernier calipers tighten the 9 Refer to Fig 18 B 4 Assemble the parts from 1 through 5 to the 3 and put the film as shown in Fig 18 B Adjust the position of the 1 with serews 2 4 6 FIG 19 aligning the two head gaps with magnetic stripes Tighten the 2 4 FIG 20 FIG 21 E Head Holder 1 ATTACHING Refer to Fig 20 amp 21 1 Put the 1 on the sound frame as shown
54. t film shouldn t work during optical playback For this adjustment change the 9 position FIG 17 C Head Presser Assembly 1 TROUBLESHOOTING Refer to Fig 17 Magnetic recording playback erasing are faulty The 9 s malfunction Film scratch The 9 are defective Poor sound quality on optical playback The 12 is defective or out of position Wow Flutter Low output level The 10 s pressure are insufficient DISASSEMBLY 1 Detach a pad roller lever Fig 16 1 2 Unscrew the 4 x2 and detach the 6 as an assembled parts The 5 will fall off In case of removing the 6 together with the 11 unscrew the 2 5 and take off the 3 after removing the spring Fig 15 27 on back of the 11 3 For further disassembly refer to Fig 17 REASSEMBLY NOTES 1 2 Make sure that the 9 s have neither flaw nor burrs on film pressing surface After attaching the parts from the 7 through the 10 to 6 make sure that the 9 s work smoothly The 10 s pressure should be within 20 30g Use a scale 045 Refer to Page 45 Make sure that the 1 moves smoothly and that each 9 s tip contacts with a head surface securely when removing the 5 Depress the 1 in the arrov direction and the 9 will touch to a head surface Further depress the 1 and you should observe that the 9 x4 are pushed in by approx Im Attach the 12 away about 0 1 0 2mm from a cap
55. to lever range This shows S N ratio I Optical Sound Adjustment Cont d 4 Noises 1 than 20mV including weighting Instrument Distortion meter Run the projector without film at 94 fps With maximum volume read the indication of the distortion meter set to level range Make sure that the output is less than 20mV 5 Frequency Response Test films Optical super 8 frequency response film 400Hz PO51 and 4Kliz P053 Instrument Distortion meter a Splice both films Project the film at 24 fps b Play back the 400Hz signal with 3V controlled by main volume knob Play back the 4KHz signal without changing the volume knob position and see the output indicated by the distortion meter This output should be vithin 15dB FIG 28 J or FIG 29 Capstan 1 and Sprocket TROUBLESHOOTING Refer to Fig 29 gt Flaw eccentricity and rattling in the shaft direction of the 1 Defect of the 5 8 Yov Plutter Excessive tightening of the 3 Flaw and eccentricity of the 11 12 13 Improper spring pressure of the 15 Improper balance of the 16 DISASSEMBLY 1 Remove the sound head holder 3 in Fig 17 2 Loosen the 2 and remove the 3 by turning it counterclockwise 3 For further disassembly refer to Fig 29 REASSEMBLY NOTES 1 Follow the reverse way of the disassembly steps 2 Make sure that the 1 turns smoothly without unevenn
56. uction 5 4V 4 2V 35 8V 4 2V recent production G Power and Lamp Switch Unit TROUBLESHOOTING Refer to Fig 41 Q No power though the switch ig ON The 3 is defective Projection lamp doesn t light The 6 8 9 are defective Relay doesn t work The 6 is defective Unable to shift High Low illuminance The 8 9 are defective Projection lamp isn t preheated Toe 9 is defective DISASSEMBLY 1 Unscrew the 2 x3 and remove the 1 with vires 2 For further disassembly refer to Fig 41 RFASSEMBLY NOTES 1 Follow the reverse way of the disassembly steps 2 Make sure each lever surely works 5 Make sure each switch surely works FIG 42 6 BSS CIRCUIT SECTION ESS Circuit Board Assembly 1 TROUBLESHOOTING Refer to Fig 42 to shift speed of 18 24 fps 12 is soldered poorly or defective Unable to adjust speed of 4 1 fps The 11 is soldered poorly or defective Unable to record play back ESS pulse Half contact of the 13 or defect of the 14 ESS mechanism doesn t work at all The 10 is soldered poorly or defective Refer to Page 85 Defect of 14 Unable to adjust speed of SLOW FAST The 9 is defective Not synchronize with tape recorder Short of 2 or 5 pin of 5 Refer to Page 84 The 3 is defective DISASSEMBLY l Unscrew the 2 x2 and disconnect the 3 4 5 Detach
57. urrs The 7 8 14 have flaw or turn irregularly Wow Flutter The 11 15 are defective The 12 has fallen off First sprocket doesn t turn The 11 s defective The 12 has fallen off Upper loop decreases in The 2 is not fixed firmly Stop the 2 s rattling reverse projection with use of proper washer DISASSEMBLY 1 Take off the 19 18 5 5 2 in this order Don t remove the 6 except unavoidable case 2 Pull out the 1s oce as an assembled parts toward you In an improved machine however the 13 is modified and you cannot pull it out Take off the 14 15 16 after unscrewing the 17 and then push the 13 backwards REASSEMBLY NOTES 1 Fix the 14 15 16 with 17 to the 13 Fix the 8 with 9 to the 2 Make sure that the 8 turns smoothly and has no flaw and dust Fix the 7 with 4 to the 2 Make sure that the 7 turns smoothly and has no flaw and dust Fix the 2 18 with 5 19 respectively FIG 14 A Projection Lens Holder Assembly 9 TROUBLESHOOTING Refer to Fig 14 Film scratch Picture sometimes becomes out of focus Unstable picture E loop is lost during optical Flaws burrs or dust on the 13 The 4 pressure is excessive The 5 is distortional The 4 pressure is insufficient film playback in reverse projection 14 Proper pressure is within 65 5g Uneven focus The 9 is out of position
58. well Adjustable with semi fixed resistor d DISASSEMBLY 1 Disconnect the 2 3 4 5 6 with care not to break the wires Disconnect the connectors indicated by dotted and virtual lines if not disconnected yet 2 Unscrew the 7 8 x2 9 x6 and 10 x2 Unsolder the 13 s wires along with 1 s groove Pull out the 1 tovard you somewhat powerfully because it is connected by connector REASSEMBLY NOTES 1 Follow the reverse way of the disassembly steps 2 Connect the 5 after pulling out it from under a lot of wires bound 3 Let the 14 s wires come nears transformer and connect it 4 Be careful not to cut or short circuit thin wires 86 B Troubleshooting Workable by remote FWD PROJECTION ISN T WORKABLE EXD PROJECTION ISN T WORKABLE 87 Voltage at 6 pin Connection of m 1C301 drops to gt SW304 1 C CN controller OV with FWD is OK If not button pushed replace it W501 or Voltage at Output from 16502 8 pin 16301 6 pin amp relating 11 16505 6 pin IC302 amp 16505 SW304 1 NC are circuit is is less than e inversive when m l2 pin are not connected defective 0 4V comparing with poorly exactly that from 8 pin connected Voltage at 5 pin poor connection 16501 is less of 3 pin 16302 than 0 4V amp 5 pin 10301 10502 is broken Voltage at SW304 4 or the Voltage at 10 pin 11 16305

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