Troubleshooting - LG 32LC2D Service Manual

1. Power Board
1-1. General Power Flow
Start check
Doesn't the
screen whole come
out?
No
Doesn't the
low pressure output
come out?
No
Doesn't the
high tension output
come out?
No
Manufacture enterprise
meaning of a passage

TROUBLESHOOTING

Yes It is identical
with Power Off
condition?
Yes
1. Check the Power Off
condition.
Doesn't the
Yes
St-by 5V signal
come out?
Yes
3. Check the 5VST
signal circuit.
Doesn't the
Yes
VSC signal Vs-ON
come out?
Yes
7. Check the VSC Vs-ON
signal
No
Is the Interface
signal operated?
Yes
2. Check the Interface
signal condition.
Doesn't the
No
5V Monitor signal
come out?
Yes
4. Check the 5V-MNT
signal circuit.
Doesn't the
No
Vs, Va voltage output
come out?
Yes
8. Check the Vs, Va
voltage output circuit.
- 15 -
Doesn't the
No
VSC signal RL-ON
come out?
Yes
5. Check the VSC RL-ON
signal.
Doesn't the
VSC low pressure
output come out?
Yes
6. Check the VSC low
pressure output
No