Troubleshooting - Samsung CXJ1352AX Service Manual

6. Troubleshooting

6-1 No Power (No Raster, No Sound, Power Led Off)
Abnormal
Check the
voltages of C804
(140~150V)
Normal
Is IC801 Pin 3
(15 ~ 20V)
Normal
Check/Replace
F801
Samsung Electronics
Abnormal
Check D801, D802
D803, D804, F801, IC801
Abnormal
Check PC802
Check
the voltage of
C814 (125V)
Check the secondary
terminal short/open
of trans
Check/Replace
IC901
Check/Replace
IC902
Check/Replace
Q804
Normal
Check
Abnormal
secondary power line voltage
(5V, 6V,16.5V)
Check the voltage
of IC901 pin 34
Abnormal
(normal : 5V)
Normal
Abnormal Check the H-Sync of
pin 26 and the V-Sync of
pin 27
Normal
Check
Abnormal
IC901 Pin 17 (High
when power On)
Normal
Abnormal
Check the voltage of
Q804 coil pin
Normal
Check the voltage
of tuner
Troubleshooting
Normal
6-1