Service Manuals, User Guides, Schematic Diagrams or docs for : AOC Monitor CM-336_337
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SERVICE MANUAL
CM-336
CM-337
COLOR VIDEO MONITOR
M618
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE
EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT
GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION
AND DISCLAIMS LIABILITY FOR CHANGES, ERRORS, OR OMISSIONS.
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TABLE OF CONTENTS
PAGE
1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. PRECAUTION AND NOTICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2-l SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2-2 PRODUCT SAFETY NOTICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2-3 SERVICE NOTES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2-4 HIGH VOLTAGE WARNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. TIMING DIAGRAM & TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5. ADJUSTMENT .................................................................. 8
5-l ADJUSTMENT CONDITIONS AND PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5-2 MAIN CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5-3 ADJUSTING THE FRONT CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5-4 ALIGNMENT PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6. PCB L A Y O U T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6-l MAIN PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6-2 VIDEO PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7. BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8. TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
B-l NO RASTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
B-2 ABNORMAL VIDEO ON CRT SCREEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
B-3 ABNORMAL WHITE BALANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
B-4 NO BLANKING WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
B-5 H. OSC/DEF/HV CIRCUIT FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
B-6 F/V CONVERTER AND ASSOCIATED CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
B-7 UNSTABLE SYNCHRONIZATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
B-B POWER SUPPLY TROUBLE SHOOTING CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9. MECHANICAL DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
10. LOCATION OF ADJUSTMENT VR (VARIABLE RESISTOR) OF P.C.B. . . . . . . . . . . . . . . . . . . 25
11. PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
12. SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
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1. SPECIFICATIONS FOR CM-336/337 COLOR MONITOR
1. CRT:
14" (13V) Deflection, 29mm Neck, 0.28mm Dot Pitch, Non-Glare Screen
2. Display Color:
Unlimited Colors
3. External Controls:
Power On/Off, Contrast, Brightness, H-Center, H-Size, V-Center, V-Size
4. Input Video Signal
Model 1 Model 2 Model 3 Model 4 Model 5 Model 6
RGB Analog RGB Analog RGB Analog RGB Analog RGB Analog RGB Analog
Horiz. Sync. TTL Level TTL Level TTL Level TTL Level TTL Level TTL Level
Positive Negative Negative Negative Positive Negative
Vert Sync. TTL Level TTL Level TTL Level TTL Level T T L Level TTL Level
Negative Positive Negative Negative Positive Negative
5. Resolution
Horizontal: 720(H) 720(H) 640(H) 800(H) 1024(H) 1024(H)
Vertical: 350(H) 400(H) 480(H) 600(H) 768(H) 768(H)
6. Display Size (H-size & V-size set to center position)
Horizontal: 247 ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo