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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.15.2 Step 2
Step 2
Check VBATI (C103, C104)
in GSM PAM Block
to Check if main power
source input or not
Check (C617 & C103, C104)
in Block
to check inner line connection
From C617 to C103, C104
Check Point (C617)
in Power Source Block
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
(CN600)
In Power Source Block
Change Board
Figure 4-6. Step 2 : GSM PAM Block
(Bottom)
C103
C104
GSM PAM
Z3X-BOX.COM
Содержание KT520
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