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7 Troubleshooting
7-2
CSH7839L/CSH9839L
7-1-2 DPMS Failure
Make No H/V sync (power off
mode)
Check signal source
H/V sync video level.
LED blinks
Check IC201 Pin 31.
Yes
No
+12 V line off
Check IC201 Pin 1.
Check and replace Q655.
Yes
No
Q654 Base driving voltage exists?
Check IC201 Pin 2.
Check and replace Q654.
Yes
No
Q659 Gate driving
voltage exists?
Refer to 7-1-1 No Power Supply.
Done
Yes
No
WAVEFORMS
2
2
56.4 V (T601, #7)
CH1 P-P = 56.4 V
CH1 RMS = 9.18 V
Содержание SyncMaster 700p Plus
Страница 2: ...Samsung Electronics Co Ltd April 1998 Printed in Korea Code No BH68 61072A ...
Страница 47: ...8 Exploded View and Parts List 8 1 Front Cover CRT Ass y CSH7839L CSH7839L CSH9839L 8 1 ...
Страница 48: ...8 2 Chassis Stand Ass y CSH7839L 8 Exploded View Parts List 8 2 CSH7839L CSH9839L ...
Страница 49: ...8 3 Rear Cover Ass y CSH7839L 8 Exploded View Parts List CSH7839L CSH9839L 8 3 ...
Страница 50: ...8 Exploded View Parts List 8 4 CSH7839L CSH9839L 8 4 Front Cover CRT Ass y CSH9839L ...
Страница 51: ...8 5 Chassis Stand Ass y CSH9839L 8 Exploded View Parts List CSH7839L CSH9839L 8 5 ...
Страница 52: ...8 6 Rear Cover Ass y CSH9839L 8 Exploded View Parts List 8 6 CSH7839L CSH9839L ...
Страница 76: ...9 Electrical Parts List 9 24 CSH7839L CSH9839L Memo ...
Страница 78: ...Memo 10 Block Diagrams 10 2 CSH7839L CSH9839L ...
Страница 80: ...Memo 11 PCB Diagrams 11 2 CSH7839L CSH9839L ...
Страница 82: ...13 1 CSH7839L CSH9839L 13 Schematic Diagrams 13 1 Power Part Schematic Diagram ...
Страница 84: ...13 Schematic Diagrams 13 3 CSH7839L CSH9839L 13 2 Micom H V Process Part Schematic Diagram ...
Страница 86: ...13 Schematic Diagrams 13 5 CSH7839L CSH9839L 13 3 Main Part Schematic Diagram ...
Страница 88: ...13 Schematic Diagrams 13 7 CSH7839L CSH9839L 13 4 Video Part Schematic Diagram ...
Страница 90: ...13 Schematic Diagrams 13 9 CSH7839L CSH9839L 13 5 CRT Socket Control Part Schematic Diagram ...