LG GD580 - Page 125

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4. Trouble Shooting
4.14.3 Step 3
Main Board (bottom side)
- Power Source Block
g
T
P
4
TP5
TP3
Step 3 :WCDMA PAM Block
e
3.7V
OK?
Step 3
Check VBAT (TP3)
in WCDMA PAM Block
e
Yes
No
See the Next Page
3.7V
OK?
No
Yes
Check the Power Supply
Short ?
No
Yes
Soldering Check Component
(CN300)
In Power Source Block
g
Check Point (TP1)
in Power Source Block
g
To Check Power source
Change Board
Check (TP1 & TP3)
in Block
e
,
g
to check inner line connection
From TP3 to TP1
TP1
TP2