Sim Part - Samsung GT-C3750 Service Manual

Level 3 Repair

8-3-4. Sim Part

Phone can't access SIM Card
Yes
SIM300 pin1(C302), pin4(C305)
No
≥ 2.7V?
Resolder or Replace SIM300
and
pin3(SIM_CLK) ≥ 3MHz ?
Yes
No
Check signal sequence,
VSIM_2.85V(C302) →
Change PBA
SIM_IO(C305) → SIM_CLK(C304)
→ SIM_RST(C303)
Yes
Check the SIM Card (is broken?)
Yes
END
8-13
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