Troubleshooting - Samsung CT331HBZX Service Manual

Troubleshooting

5. Troubleshooting
5-1 No Power
No Power
ON
OFF
Check LED when AC
Check IC802.
code is plugged.
Abnormal
Normal
Abnormal
Check
Check/Replace
Fuse.
IC802, R812, D856.
Check
Check and Replace
IC801* Pin 1
D807 ~D810
Oscillation.
Abnormal
Check
Abnormal (0 ~ 15V)
IC801 Pin 3 B + .
Check/Replace
Normal (15~20V)
D806, Q401, Q801,
D802, D814*
Normal (0.5 ~ 3V)
Abnormal (0V)
Check IC801*
Pin 4 Voltage
Check/Replace
Check/Replace
DZ802, DZ803, D806
PC802, DZ807
Samsung Electronics 5-1