Troubleshooting - LG 22LU7000 Service Manual

1. No power
(1) Symptom
1) Doesn't minute discharge at module.
2) Non does not come in into the front LED.
3) Check Off Mode.
(2)
Check follow
Is plug in power cord?
Is push the AC
Switch ?
Is connect the AC
Switch cable?
Is normal the
"Fuse" on Power
Is connect the Power
Board and 15p of Main
Board Cable?
After remove the cable connect to
Power Board (except the AC
switch cable and Power cord),
authorizes the AC voltage marking
on manual.
When 5V does not operate,
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Only for training and service purposes

TROUBLESHOOTING

No
Yes
No
Yes
No
Yes
No
Board?
Yes
Yes
Plug in power cord
Replace AC switch
Connect Cable
Replace fuse
Connect Cable
[AC Switch Value]
LU7000 Power B/D : CN1(AC Socket)
- 18 -
CN2(AC Switch)
LGE Internal Use Only