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5. Troubleshooting
5-1 No Power
Disconnect
the power cord
Check
Power LED
Check
IC901 B+
Abnormal
Check
R455
Abnormal
Check
IC803S, PC802S
FA802S
Abnormal
Check
CN902
Samsung Electronics
LED ON
LED OFF
Normal
Check/Replace
IC902, Check I2CII
Normal
Check IC905
(EEPROM)
QF09, QP10
Abnormal
Check TRANS 28V,
16V LINE
Check
F-BOX I2C
Check IC901
pins
35 , 49
Check
Q802
Normal
Check
RL802S
Normal
Abnormal
Check
135V line
Check
Normal
Q405
Check
F-BOX 5V
B+
Check
IC804, FA801S
Normal
Check
F-BOX
HD, VD
Abnormal
Check
Q404, Q405
Normal
Replace
F-BOX
Abnormal
Check
IC902,IC903
Abnormal
Replace
Q802
Abnormal
Replace
Q802
Abnormal
Abnormal
Check the voltage
of Trans Pin 1
Normal
Check IC801S,
Check D806
DZ803, PC801S,
DZ804, Q801
Check
H-BLK, V-BLK
LINE
Troubleshooting
5-1
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