Sim Card Trouble - LG KE770 Service Manual
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Also See for KE770:
- User manual (233 pages) ,
- User manual (108 pages) ,
- User manual (217 pages)
Table of Contents
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5.10 SIM card trouble
Check Points
-Power control FET is working
-Socket soldering
-Proper SIM is used
2V85_SIM
_SIM_EN
G
R507
10K
SIM_IO
C510
NA
S
Q500
SI1305-E3
D
CN500
R505
4
1
NA
C5
C1
5
2
C6
C2
6
3
C7
C3
10
7
GND4
GND1
9
8
GND3
GND2
C512
0.1u
PIN5
SIM_RST
SIM_CLK
C535
NA
- 85 -
5. Trouble shooting
Check soldering
all pin of socket
CN500
PIN6
PIN1
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Table of Contents
Troubleshooting
