Elmo st-I200 User manual

ELMO
SERVICE MANUAL
ST-1200
ELMO CO., LTD.
NAGOYA, JAPAN

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

I. DISASSEMBLY & ASSEMBLY
A. FRONT & REAR ARM
1. FRONT ARM (Fig. 1)
Fig. 1
DISASSEMBLY
1. Take out attaching screws (Fig.l l,x2) and remove Front arm.
2. Take out Reel shaft pins (Fig.1 2,x2) and remove Reel shaft assy.
3. Take out attaching E ring (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 different, but otherwise same.
1

2. FRONT ARM (Fig. 2)
Fig. 2
DISASSEMBLY
1. Take out attaching E ring (Fig.2 1).
2. Take out attaching screws (Fig.2 2,x2) and remove Spring adjusting collar, Reverse slip spring,
Pulley washer, Reverse middle gear 2, Friction plate 1, Reverse middle gear 1 and Reverse gear
boss.
3. Take out attaching E ring (Fig.2 3) and remove Rewind gear.
4. Take out attaching E ring (Fig.2 4) and remove Reverse middle 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 Spring adjusting
collar. Rewinding tension .. Tolerance 65 90 gr.
4. The rewinding time should be within 100 sec. with 400 feet reel.
NOTE: Pay attention for the attaching direction of gears.
2

3. REAR ARM (Fig. 3)
Fig. 3
DISASSEMBLY
1. Take out attaching screw (Fig.3 1) and remove Take up middle pulley 2, Take up pulley washer
and Take up belt.
2. Take out attaching screw (Fig.3 2) and remove Spring adjusting collar, Rear pulley shaft spring,
Pulley washer, Rear take up gear and Friction plate 2.
3. Pullout 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.
Take up tension … Tolerance 55 80 gr.
NOTE: When replace Take up belt, take out just attaching screw (Fig.3 1).
3

4. TAKE UP GUIDE (Fig.4)
Fig. 4
DISASSEMBLY
1. Take out attaching screws (Fig.4 1,x2) and remove Film guide 4.
2. Take out attaching 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

B. PROJECTION LAMP & LENS
1. HEAT PROOF GLASS (Fig. 5)
Fig. 5
DISASSEMBLY
1. Push lamp cover stopper (Fig.5 1) and take off Lamp cover.
2. 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

2. PROJECTION LAMP (Fig. 6)
Fig. 6
REPLACEMENT
1. Pullout Lamp socket assy (Fig.6 1) from Lamp.
2. Hold the Lamp presser (Fig.6 2) of Lamp holder (2) assy and pullout Lamp.
3. To install a replacement Lamp, place the square base of Lamp into the hollow and push the
reflector into the metal rim of Lamp holder (2) assy.
4. To obtain the sufficient screen brightness, first loosen attaching screws (Fig.6 3,x4) and move
Lamp fixing plate 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. Life of the Lamp installed is averaged 35 hours under normal projection.
4. Applied voltage to the lamp should be 14.3 15V A.C. on high position and 12.3 13V A.C. on low
position, under the lamp lighting condition.
6

3. LENS HOLDER (Fig. 7)
Fig. 7
DISASSEMBLY
1. Turn Focusing knob fully clockwise and pullout Projection lens.
2. Take out attaching screws (Fig.7 1,x2) and remove Pressure plate assy and Pressure plate
spring.
3. Take out attaching screws (Fig.7 2,x4) and remove Pressure plate holder.
4. Strip off Focusing plate (Fig.7 3).
5. Take out Lamp socket holder screw (Fig.7 4) and remove Focusing knob.
6. Take out attaching screws (Fig.7 5,x2) and Focusing guide pin, then remove 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 the focusing test film and either tighten or loosen attaching
screw (Fig.7 7) to obtain evenness in focusing. Then, secure the screw with screw tight.
NOTE: Attach Focusing cam mount as the stopper (Protuberance) of Focusing cam mount towards
lower side.
7

C. TRANSFORMER &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