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7 Troubleshooting
7-6
CSH7839L/CSH9839L
7-1-10 Tilt Failure
IC03 Pin 9 output duty varies
with different DAC values?
IC403 (on Video board)
Pin 3 output varies with different
DAC values?
Check and replace IC402.
Check and replace CRT.
Yes
Yes
No
Check and replace IC03.
No
Check tilt connector connection
7-1-11 V Deflection Failure
±14 V line is on?
IC251 Pin 23 output exists?
Check and replace IC251.
Yes
Yes
No
Refer to 7-1-1 No Power Supply
No
IC301 Pin 1 input exists?
Check CN201.
Yes
No
IC301 Pin 5 output exists?
Check and replace some parts
around IC301.
No
No
Check V DY connector connection.
WAVEFORMS
12
13
12
18.6 V (Q407, Base)
CH1 P-P = 55.2 V
CH1 RMS = 9.52 V
13
1.216 kV (Q407, Collector)
CH1 P-P = 1.216 kV CH1 RMS = 316 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 ...