LG GD580 - Page 124

- 125 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. Trouble Shooting
Step 2
Check VBATI (TP3,TP4,TP5)
in GSM PAM Block
d
to Check if main power
source input or not
Check (TP1&TP3,TP4,TP5)
in Block
c g
to check inner line connection
From TP1 to TP3,TP4,TP5
Check Point (TP1)
in Power Source Block
g
To Check Power source
3.7V
OK?
Yes
No
Proceed to the Step 3
3.7V
OK?
No
Yes
Check the Power Supply
Short?
No
Yes
Soldering Check Component
(CN300)
In Power Source Block
g
Change Board