LG M237WDP - Back Cover Wire Arrangement

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