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LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
4.15.3 Step 3
Figure 4-7. Step 3 :WCDMA PAM Block
➂
Figure 4-8. PAM Power Source
➄
WCDMA
PAM
DC/DC
Converter
Check point
(CN600)
Check point
(C618)
C117
3.7V
OK?
Step 3
Check VBAT (C117)
in WCDMA PAM Block
Yes
No
See the Next Page
3.7V
OK?
No
Yes
Check the PowerSupply
Short ?
No
Yes
Soldering Check Component
(CN600)
In Power Source Block
Check Point (C618)
in Power Source Block
To Check Power source
Change Board
Check (C117 & C618)
in Block ,
to check inner line connection
From C117 to C618
➂
➄
➄
➂ ➄