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SAMSUNG Proprietary-Contents may change without notice
Level 3 Repair
8-31
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8-3-8. SIM Card Working
Resolder
Q400
Change
U401(PMIC)
Yes
Check
Q400
SIM FPCB
Break down?
NO
Change SIM400
YES
No
Yes
C450
= 3.0V
NG
Check SIM400
& Neighboring Circuits
Insert & Operate
SIM card