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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting and Circuit Diagrams
9-6
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9-1-3. Sim Part
Check the SIM
connector's (SIM400)
connector's to SIM
card
Check the circuit related to
UCP300
NO
resolder or change
SIM300
NO
Check the related circuit of
SIM300
NO
YES
YES
YES
Phone can't access SIM
card
Check the circuit around
UCP300 output
and voltage supply circuitry
END
YES
Check the pin 1 of SIM400
Voltage = 3V
Check the circuit around SIM400
input circuitry
Check the related circuit of
UCP300
NO
①
②
③
④
C340
C342
C339
C338
6 6
7
7
8
8
9
9
G
13
14
G
G
15
16
G
1
1
10 10
11
11
12 12
2
2
3
3
4 4
5
5
C341
SIM300
SIM_IO
SIM_CLK
VSIM
SIM_RST