LG 22LF4520 - Web Manual, Licenses, and Troubleshooting; Troubleshooting Common Issues

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TROUBLE SHOOTING
1. No Power
Replace X300
N
Check C500
Voltage Level (19V)
Check Power connector
OK ?
Replace Adapter
Y
N
Y
Check IC501 Output
Voltage Level (3.3V)
Replace IC501 &
Recheck
Y
N
Check X300 Clock
24MHz
Replace IC405 Flash
Memory
Y
Check IC503 Output
Voltage Level (5V)
Replace IC503 &
Recheck
Y
N
Check IC502 Output
Voltage Level (1.15V)
Replace IC502 &
Recheck
N
Y