Troubleshooting; Power Board - LG 32LC2DC Service Manual

1. Power Board

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

TROUBLESHOOTING

It is identical No
with Power Off
condition?
Yes
1. Check the Power Off
condition.
Doesn't the
No
St-by 5V signal
come out?
Yes
3. Check the 5VST
signal circuit.
Doesn't the
VSC signal Vs-ON
come out?
Yes
7. Check the VSC Vs-ON
signal
Is the Interface
signal operated?
Yes
2. Check the Interface
signal condition.
Doesn't the
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