Checkpoints By Error Mode - Samsung LE32M87BDX Service Manual

4 Troubleshooting

4-2 Checkpoints by Error Mode

4-2-1 No Power
LAMP off, power indicator
LED red color?
Yes
Does proper DC 13V
appear at JP845?
Yes
Does proper DC A3.3V,
A5V appear at
C1158, C1150?
Yes
Does proper DC 5V, 3.3V,
1.2V appear at C1153, C1178,
C1170?
Yes
A power is supplied to set?
TIP: How to drive the circuit by force when LCD panel Lamp is faulty.
- It is available to drive the circuit when the pin of 2 in Main_Power_control CN1101
connect the pin of 4.
4-2
No
Check a connection a power cable.
No
Change a Assy PCB Power.
No
Check a IC1112, Q1103.
Change a main PCB ass'y.
No
Check a IC1111, IC1102, IC1113.
Change a main PCB ass'y
Check a other function.
No
(No picture part)
Replace a lcd panel.