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5.11 SIM & USD trouble
SIM Check Points
-Power is working
-Socket soldering
-Proper SIM is used
TP1
SIM_CLK
TP3
SIM_DATA
TP2
2V9_VSIM
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. Trouble shooting
- 84 -
SIM CONNECTOR
C548
1000p
2V9_VSIM
4
C5
C6
5
C7
6
GND1
7
8
GND2GND3
9
10
GND4
J500
1
C1
2
C2
C3
3
22p
C547
R523
DNI
15K
C546
R522
2V9_VSIM
DNI
C543
220n
SIM_DATA SIM_CLK
SIM_RST
TP1
TP2
TP3