LG 34WL550 - Page 13

- 13 -
LGE Internal Use Only
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
TROUBLE SHOOTING GUIDE
1. No Power
Replace X100
N
Check C701
Voltage Level (19V)
Check Power connector
OK?
Replace Adapter
Y
N Y
Check IC703 Output
Voltage Level (3.3V)
Replace IC703 &
Recheck
Y
N
Check X100 Clock
27MHz
Check IC701, 702 Output
Voltage Level (5V)
Replace IC701, 702 &
Recheck
N
Y
Replace IC107 Flash
Memory
Y
Y
Check IC705 Output
Voltage Level (2.5V, 1.2V)
Replace IC705 &
Recheck
N