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9-1-3. Sim Part
"Insert SIM" is displayed on the LCD
The voltage is 2.8V
at the pin#1 of
Is there any signal
pin #2,3,4 of
Check the SIM Card
Yes
SIM300?
Yes
END
No
Check the
No
Check the
R300
VSIM
SIM_RST
SIM_CLK
SIM_IO
C303
C304
9-5
Flow Chart of Troubleshooting
UCP300
UCP201 & UCP300
C305
C306
C307
1
2
SIM300
1
VCC
2 VCC
3
CLK
4
GND
5 VPP
6
I/O
7
NC
8
NC
9
NC
10
NC
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