Samsung TXJ1366 Service Manual - Page 18

Troubleshooting - code

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

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