Samsung SCH-I535 Service Manual page 83

Level 3 Repair
8-3-3.USIM Part
Insert & Operate SIM Card
NG
Check the power of NFC
Check L1104
NO
C607 = 3.3 ~ 4.35V with Battery
Repair L1104
Inserted?
YES
Check the power of SIM
NO
Replace U601
R1414 = 1.8V or 3.3V?
YES
Measure the waveform of
YES
UICC_DATA/CLK/RST
(C1418, C1419, C1420) Replace SIM FPCB
Can you see the right
waveform?
NO
NO SIM card was broken.
Check the SIM card.
Is it right?
Replace SIM card.
YES
Replace PBA
8-13
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