LG DP372D - Electrical Troubleshooting Guide

3-2
ELECTRICAL TROUBLESHOOTING GUIDE
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
No 3.3VA
Check Q305/Q306
and Replace
Replace U301
NO
1. POWER CHECK FLOW
A. B.
Is
5VA section
working?
Check Q303/D301
and Replace
Check Q304/D302
and Replace
YES
YES
YESNO
Is
VCC_5V section
working?
No 5VA
Check
D501 Replace
NO
BAT_OUT=12V?
YES
YES