Troubleshooting - Samsung CS301BN2X Service Manual

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5. Troubleshooting

5-1 No Power
Samsung Electronics
No
Check the 135/155V,
13.0V B + Lines
Yes
No
Check IC804
Pin 9 (5V)
Yes
Check IC901 No
Pin 16 (4V).
Yes
Check IC901
No
Pin 18 ; Stand-by : 0V
Normal : 5V
Yes
No
Check IC804
Pin 8 (8V)
Yes
Check IC901, No
Pin 26 <H-SYNC>
Yes
Check/Replace
IC901
Check/Replace
IC801, D801, F802
Check/Replace
IC804 (KA7630),
DZ905, IC901
Check/Replace
IC901, DZ903, DZ902
Check/Replace
IC901(m-com).
Check/Replace
IC804, IC201,
IC701, ICS02
Check/Replace
IC201, Q402, Q403,
DZ402, IC901.
Troubleshooting
5-1