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TABLE OF CONTENTS

I. DISASSEMBLY

A. FRONT & REAR ARM

Page

1. Front Arm 

1

2. Rear Arm 

3

3. Take-up Guide..................................................................

4

B. PROJECTION LAMP & LENS

1. Heat Proof Glass..............................................................

5

2. Projection Lamp...............................................................

6

3. Lens holder......................................................................

7

C. TRANSFORMER & MOTOR

1. Transformer.....................................................................

8

2. Motor................................................................................

9

3. Clutch...............................................................................

10

4. Drive Belt.........................................................................

11

5. Switch Mechanism...........................................................

12

D. MACHINE FRAME

1. Machine Frame................................................................

13

2. Second Sprocket...............................................................

14

E. SOUND

1. Amplifier..........................................................................

15

2. Head Base Plate..............................................................

16

3. Sound Lens......................................................................

17

4. Sound Head......................................................................

18

II. TROUBLE SHOOTING

A. FRONT & REAR ARM.....................................................................

19

B. PROJECTION LAMP & LENS........................................................

20

C. TRANSFORMER & MOTOR...........................................................

21

D. MACHINE FRAME..........................................................................

23

E. SOUND.............................................................................................

26

CONNECTING DIAGRAM FOR MACHINE......................................

31

SCHEMATIC DIAGRAM FOR MACHINE.........................................

32

SCHEMATIC DIAGRAM FOR AMPLIFIER.......................................

33

VOLTAGE CHECKING POINTS ON THE CIRCUIT PLATE...........

34

Summary of Contents for st-I200

Page 1: ...ELMO SERVICE MANUAL ST 1200 ELMO CO LTD NAGOYA JAPAN ...

Page 2: ...4 Drive Belt 11 5 Switch Mechanism 12 D MACHINE FRAME 1 Machine Frame 13 2 Second Sprocket 14 E SOUND 1 Amplifier 15 2 Head Base Plate 16 3 Sound Lens 17 4 Sound Head 18 II TROUBLE SHOOTING A FRONT REAR ARM 19 B PROJECTION LAMP LENS 20 C TRANSFORMER MOTOR 21 D MACHINE FRAME 23 E SOUND 26 CONNECTING DIAGRAM FOR MACHINE 31 SCHEMATIC DIAGRAM FOR MACHINE 32 SCHEMATIC DIAGRAM FOR AMPLIFIER 33 VOLTAGE C...

Page 3: ...ing Fig 1 3 and remove Reel shaft gear 4 Take out attaching screws Fig 1 4 x2 and remove Arm gears x2 5 Take out Arm gear shafts Fig 1 5 x2 and remove Arm gears x2 ASSEMBLY 1 As to the assembling follow the reverse way of the above steps 2 Lubricate all the gears with aluminum grease NOTE In comparison with the rear arm Front arm Front arm base plate and Front arm shaft gear are fundamentally diff...

Page 4: ...dle gear 3 as well as Sprocket shaft pin inserted 5 Take out attaching E ring Fig 2 5 and remove Rewind gear holder 6 Take out attaching screw Fig 2 6 and Arm lock spring then pull out Front arm assy ASSEMBLY 1 As to the assembling follow the reverse way of the above steps 2 Lubricate all the gears with Alvania grease 3 Adjust the rewinding tension of the front arm to be 75 gr by the position of S...

Page 5: ... pin Fig 3 3 and remove Friction wheel pulley 4 Take out attaching screw Fig 3 4 and Arm lock spring then pullout Rear arm assy ASSEMBLY 1 As to the assembling follow the reverse way of the above steps 2 Lubricate Take up pulley washer and the teeth of Take up middle pulley 2 with Alvania grease 3 Adjust the take up tension of the rear arm to be 65 gr by the position of Spring adjusting collar Tak...

Page 6: ...g screw Fig 4 2 and remove Take up guide roller 1 3 Take out Take up guide shaft Fig 4 3 and remove Take up guide and Take up lock spring 4 Take out attaching screw Fig 4 4 and remove Release switch presser ASSEMBLY 1 As to the assembling follow the reverse way of the above steps 2 All the rollers should rotate smoothly 4 ...

Page 7: ... Straighten out the latches Fig 5 2 x4 of Heat proof glass holder and take out LC heat proof glass and Heat proof glass presser ASSEMBLY 1 As to the assembling follow the reverse way of the above steps 2 When replace LC heat proof glass of which divided crack should not be captured by the latches of Heat proof glass holder 5 ...

Page 8: ...ate and Lamp holder 2 assy back and forth or up and down until most bright and leveled screen brightness can be accomplished 5 Screen brightness of the high position should be satisfied undermentioned specification Screen Center 800 Lx min Screen Corner 50 of the center brightness NOTE 1 Do not touch inside of the Lamp reflector as well as Lamp itself 2 Replacing Lamp first disconnect Power cord 3...

Page 9: ...ve Focusing cam mount Tube Focusing spring and Focusing cam 7 Take out attaching screws Fig 7 6 x2 and remove Lens holder assy ASSEMBLY 1 As to the assembling follow the reverse way of the above steps 2 Lubricate Focusing cam with permalub H3002 grease 3 Lens holder assy should not only smoothly move back and forth but also be certainly locked by Click spring 4 To align the optical axis first pass...

Page 10: ...RMER MOTOR 1 TRANSFORMER Fig 8 Fig 8 REPLACEMENT 1 Unsolder the end of the wires connected to Transformer terminal Fig 8 1 and Terminal 2 Fig 8 2 2 Take out attaching screws Fig 8 3 x4 and replace Transformer 8 ...

Page 11: ...ig 9 3 x2 and pullout Pulley unit just Pulley 50 Hz or with Pulley 60 Hz 5 Straighten out the latches Fig 9 4 x8 of Fan casing 3 and remove Fan casing 2 and Fan casing 3 6 Loosen attaching screws Fig 9 5 x2 and pullout Fan 7 Take out attaching screws Fig 9 6 x2 and remove Fan casing 1 ASSEMBLY 1 As to the assembling follow the reverse way of the above steps 2 Fan should not be interrupted by Fan c...

Page 12: ...indicated in Fig 10 to achieve respectable movement and tighten attaching screws Fig l0 l x2 3 If Safety shutter could not keep off from the optical axis of the screen during Motor switch knob positioned F or R loosen attaching screw Fig 10 4 and adjust the position of Safety shutter presser 4 If Clutch unit assy could not convey the rotation of Motor assy during 18 f s or 24 f s projection loosen...

Page 13: ...attaching screw Fig 11 8 and remove Idler holder then replace Drive belt 3 Move back Pulley 50 Hz so that Drive belt and Pulley 50 Hz could line up in a straight line and tighten attaching screws Fig 11 7 x2 4 Attach Idler holder to obtain adequate tension of Drive belt and tighten attaching screw Fig 11 8 5 Drive belt should not be twisted 11 ...

Page 14: ...4 and remove Pilot lamp holder 5 Take out attaching screw Fig 12 5 and remove Switch cover 6 Unsolder the end of the wire connected to Micro switch V 2A Fig 12 6 7 Take out attaching screws Fig 12 7 x3 and pull out Switch assy ASSEMBLY 1 Pull out AMP assy Refer to page 15 2 Attach Switch assy to Base frame To do this first join Switch cam and both Reverse lever and Clutch lever 3 as indicated in F...

Page 15: ...13 5 x3 and pullout Machine frame assy ASSEMBLY 1 Attach Machine frame assy of which Loop former should be released and tighten attaching screws Fig 13 5 x3 strong enough 2 Solder the end of the wires x2 to Solenoid assy Fig 13 3 and hold the wires by Cord supporter then tighten attaching screw Fig 13 4 3 Insert Changing holder to Sprocket shaft 1 To do this join the U shaped hollow to Changing pl...

Page 16: ... out attaching screw Fig 14 4 then remove Second sprocket cap and Second sprocket ASSEMBLY 1 Attach Second sprocket and Second sprocket cap and pull out Second sprocket shaft as directed in Fig 14 then tighten attaching screw Fig 14 4 2 To carry out the rest follow the reverse way of the above steps Disassembly 2 1 NOTE Even if attaching screw Fig 14 4 would be loosened or tightened without perfor...

Page 17: ...e connector pin of the wires Fig 15 3 4 5 6 to AMP assy 2 Position Motor switch knob F and attach AMP assy to Base frame so that Switch cam and Recording knob assy could cooperate 3 Attach AMP decoration plate and tighten attaching screw Fig 15 1 x2 Fig 15 2 temporarily 4 Fit AMP assy so that a click of Micro switch could not be made while Motor switch positioned S but a click of Micro switch coul...

Page 18: ...nd drum 4 Take out attaching nuts Fig 16 4 x2 in turn and remove Pad roller lever 5 Unsolder the end of the wires Fig 16 5 x2 connected to Sound head and Erasing head 6 Disconnect the connecting pin of the wire Fig 16 6 on AMP assy side Refer to page 15 7 Take out attaching screws Fig 16 7 and remove Head base plate assy ASSEMBLY 1 As to the assembling follow the reverse way of the above steps 2 A...

Page 19: ... tighten or loosen attaching screw Fig 17 3 to adjust the slit image through Sound lens can be screened in the center of Silicon photo diode 6 Attach Pad roller lever 7 Pass the optical focusing test film 4000 Hz 8 Connect both the resistor 8 ohms 10W and the voltage meter AC 10V max parallel to the output terminals of the amplifier Extension speaker cord terminal 9 Run the projector move Sound le...

Page 20: ... could line up in a straight line as illustrated Fig 18 4 5 Attach Pad roller lever and tighten attaching nuts Fig 18 1 x2 in turn 6 Pass the magnetic pre recorded test film 5000 Hz 7 Connect both the resistor 8 ohms 10W and the voltage meter AC 10V max parallel to the output terminals of the amplifier Extension speaker cord terminal 8 Run the projector move Sound head gradually to search the posi...

Page 21: ...ind smoothly Rewind gear holder P2 9 Check whether Front arm shaft gear would be depressed by Rewind gear holder If so replace Rewind gear holder P 2 Reel shaft assy cannot take up with 1200 ft reel Spring adjusting collar P2 44 Adjust Spring adjusting collar first loosen attaching screw to raise the take up tension P 3 Reel shaft assy cannot rewind with 1200 ft reel Spring adjusting collar P2 2 A...

Page 22: ...er the voltage would be applied P 8 Dark image Lamp P3 3 Check whether Lamp would be off the rim of Lamp holder 2 assy P 6 To obtain the sufficient brightness first loosen attaching screws and move Lamp fixing plate and Lamp holder 2 assy back and forth until most bright screen can be achieved Safety shutter P7 ll If Safety shutter could not keep off from the optical axis of the screen during Moto...

Page 23: ... Switch assy P6 i Check Micro switch SW8 whether could not operate due to loosenness of attaching screw P 12 Check the breakage of Micro switch SW7 SWS by a tester Phase change condenser P7 4S Check the breakage of Condenser 19 MFD 125WV If so replace Motor stator P7 61 Check the breakage of the coil of Motor stator If so replace Motor assy P 9 Motor circuit P7 46 Check the breakage of the wires c...

Page 24: ...ally and if its movement seems to be heavy lubricate all gears shafts and cam P 13 Clutch roller P7 8 If Clutch roller could not be joined with Shutter assy due to slip adjust the position of Clutch lever 2 assy to convey the rotation of Motor P 10 Drive belt P7 4 If the deterioration of Drive belt would be causing slip replace Drive belt P 11 Motor runs but very slow Motor stator P7 61 Although t...

Page 25: ...osition of Film guide 2 Picture flow Shutter assy P4 28 To complete the synchronization between Shutter assy and Claw adjust the position of Shutter Film flow Claw P4 40 If the tip of Claw has been broken or the stroke of Claw is insufficient with respect to the film perforation pitch replace Claw If the tip of Claw could not protrude far enough above Aperture plate assy or is not in perforation d...

Page 26: ...rupted by Erasing head adjust the position of Erasing head P 18 Sound drum P5 19 If the film is interrupted by Sound drum adjust the position of Head stand P 18 Head presser P5 51 If the space between Head presser 1 assy and Head film guide either too wide or narrow and the film is interrupted around Head film guide bend Head presser holder assy to adjust the space P 18 Film cannot pass through se...

Page 27: ... position of Link lever spring so that the tension of Pad roller may be increased P 16 Tension roller P5 63 Move the position of Balance lever spring so that the film may not be stretched downward excessively P 16 Motor switch knob cannot be turned Reverse lever P6 20 If Reverse lever has been interrupted and deformed by AMP holder 2 replace or fix Reverse lever and also cut off the portion of AMP...

Page 28: ...ning of attaching screws for Sound lens holder adjust the position of Sound lens assy P 17 Silicon photo diode P5 77 Check the br akage of the wire of Silicon photo diode by a tester If so replace AMP assy P7 j Check the output voltages on Circuit plate in comparison with the voltage checking points on AMP circuit plate If the unusual voltage would be measured replace AMP assy P 34 Magnetic record...

Page 29: ...Sound head P 18 Head presser P5 51 If the film cannot be held in parallel with Head presser and Sound head adjust the position of Head presser holder assy P 18 Film If the sound track of film has been exhausted replace film Output sound is low during optical recorded film reproduction Exciter lamp P5 68 Adjust the position of Exciter lamp if it has been distorted P 17 Sound lens P5 81 Adjust the a...

Page 30: ... slit image through Sound lens has not been exactly focused in the center of Silicon photo diode adjust the position of Sound lens P 17 If Sound lens has been stained replace Exciter lamp P5 68 If Exciter lamp is distorted adjust the position of Exciter lamp P 17 AMP Assy P7 j If the AMP assy is inferior replace P 15 Speaker P2 62 If Speaker is inferior replace Tone color is inferior during magnet...

Page 31: ...spring tension of Fly wheel spring is not sufficient bend Fly wheel spring to obtain the adequate spring tension Middle gear 1 2 P5 35 36 If either Middle gear 1 or 2 has been broken replace and if stained lubricate with grease first clean up by alcohol First sprocket P3 27 If the rotation of First sprocket gear gear is not smooth replace Motor assy P7 61 If the vibration of Motor is so big replac...

Page 32: ...t is inferior replace Noise is recognized when sound drum is rotated Power IC P7 l9 Replace IC3 STK 015 if it is inferior at the same time replace C32 0 047 MFD and R23 5 ohms AMP assy P7 j Check whether earthed circuit in AMP assy is either inferior or mid wired P 15 If the input wire to AMP assy is excessively long and close by the speaker circuit of AMP assy cut the wire adequately to prevent o...

Page 33: ...E20309B Connecting diagram for machine for ST 1200 31 ...

Page 34: ...E30653B Schematic diagram for machine for ST 1200 32 ...

Page 35: ...E30627B Schematic diagram for amplifier for ST 1200 33 ...

Page 36: ...Voltage checking points on the circuit plate for ST 1200 34 ...

Page 37: ...ELMO CO LTO Service Department Nagoya Japan February 1973 SERVICE MANUAL No 201 ...

Page 38: ...Type C E30694 Schematic diagram for Amplifier for ST 1200 ...

Page 39: ...Type C Amplifier circuit plate for ST 1200 ...

Page 40: ...ELMO ...

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