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LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
TROUBLE SHOOTING
1. No Power
Check C820 All
Voltage Level (19V)
Check Power connector
OK ?
Replace Adapter
N N
Check IC802 output
Voltage Level (12V)
Replace IC802 &
Recheck
N
Check IC809 Output
Voltage Level (3.3V_ST)
Replace IC809
N
Y
Check IC810 Output
Voltage Level (2.5V)
Replace IC810
N
Y
Y
Y
Y
Check IC807 Output
Voltage Level (1.5V)
Replace IC807
N
Y
Check IC806 Output
Voltage Level (1.15V)
Replace IC806
N
Check X201 Clock
24MHz
Replace X201
N
Replace IC100 Flash Memory
Y