Trouble Shooting - LG 32LG6000 Service Manual

1. Power Board
1-1. The whole flow chart which it follows in voltage output state
Start check
Does not screen
whole comes out?
No
Does not
low voltage output
comes out?
No
Does not
inverter signal output
comes out?
No
Manufacture enterprise
meaning of a passage.
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Only for training and service purposes

TROUBLE SHOOTING

Yes
Is it identical with
power off condition?
Yes
1. Check the Power off condition.
Yes
Does not the
St-by 5V(P-5V) signal
comes out?
Yes
3. Check the St_by 5V
signal circuit.
Yes
Does not the
VSC signal INV_CTL
comes out?
Yes
7. Check the VSC INV_CTL signal?
No
Is the interface
signal operated?
Yes
2. Check the interface signal condition.
No
Does not the
AC Detect signal
comes out?
Yes
4. Check the AC detect
signal circuit.
No
Does not the
INV 24V voltage output
comes out?
Yes
8. Check the INV 24V
voltage output circuit.
- 12 -
No
Does not the
RL_ON/PWR_ON/OFF
comes out?
Yes
5. Check the VSC RL_ON
/PWR_ON/OFF signal.
Does not the
VSC Low voltage output
comes out?
Yes
6. Check the VSC low
Voltage output.
LGE Internal Use Only
No