Sim Part - Samsung GT-P3100 Servise Manual

8-3-4. Sim Part

Insert SIM card
Check the Pin Soldering
Check the SIM Voltage.
(R310) >= 1.8 or 3.0?
SIM_IO SIM_RST
D300
SIM_IO
SIM_CLK
C338
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Yes
of SIM300
Yes
Yes
END
CP_VSIM_3.0V VAP_IO_1.8V
R308
R310
SIM300
C8 C8 C5
C5
R311
C7 C6 C6
C7
C3 C3 C2
C2
C4 C1 C1
C4
1 6
NC NC
2 NC 5
NC
3 NC 4
NC
C340
C339
No
Resoldering and recheck
Change to the new SIM card.
No
If it doesn`t still work SIM card after changeing
the SIM card, Check the UCP300 (Crack etc)
SHORT
SIM_DETECT
SIM_RST
C341
8-11
Level 3 Repair