Only For Training And Service Purposes - LG GT500 Service Manual

Step 1
Check Point (TP1) in
Power Source Block
To Check Power source
to Check if main power
source input or not
Check Point (TP2)
in Power Source Block
To Check Power source
Check (TP1 & TP2)
in Block
to check inner line
connection
From TP4 to TP3
Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

No
3.7V OK?
Yes
Proceed to the Step 2
3.7V OK?
Yes
Short?
Yes
Soldering Check Component
(CN300)
In Power Source Block
- 123 -
4. TROUBLE SHOOTING
No
Check the Power Supply
No
Change Board
LGE Internal Use Only