Sim & Usd Trouble - LG KS360 Service Manual

5. Trouble shooting
5.11 SIM & USD trouble
SIM Check Points
-Power is working
-Socket soldering
-Proper SIM is used
SIM CONNECTOR
2V9_VSIM
R522
15K
TP3
SIM_DATA
10
C546
DNI
TP1
SIM_CLK
LGE Internal Use Only
2V9_VSIM
TP2
J500
4 1
C5 C1
TP1
5 2
C6 C2
6 3
C7 C3
7
GND4 GND1
9 8
GND3 GND2
C543 C547 C548
220n 22p 1000p
2V9_VSIM
SIM_RST
SIM_CLK
TP3
SIM_DATA
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TP2
Only for training and service purposes