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Check P1101 All
Voltage Level (5V, 15V)
Y
Check IC1102 Output
Voltage Level (3.3V)
Y
Check IC1104 Output
Voltage Level (1.8V)
Y
Check IC1105 Output
Voltage Level (12V)
Y
Check IC1107 Output
Voltage Level (5V)
Y
Check X101 Clock
12MHz
Y
Replace IC 105 Flash
Memory
Copyright
LG Electronics. Inc. All right reserved.
Only for training and service purposes
TROUBLESHOOTING
1. Power- Up Boot Fail Trouble Shooting
N
Check Power connctor
N
Replace IC1102
N
Replace IC1104 &
Recheck
N
Replace IC1105
N
Replace IC 1107 &
Recheck
N
Replace X101
OK ?
- 21 -
N
Replace Power board
Wave form of X101
LGE Internal Use Only
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