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Level 3 Repair
8-3-12. No Service
No service
Yes
Check memu setting
Menu → applications → setting → wireless and network →
mobile networks → network mode → setting is auto mode ?
PHONE : T111XXXX
Menu → Phone → Keypad →
*#1234# → check Phone version →
Check the Main Antenna exists or not
PHONE : T111XXXX
No
No
Check the C100,C112,C122
Re-solder C100,C112,C122 correspondingly.
is well soldered
Yes
No
Check VDD
Replace the U107
V(C146) = 2.8V
Abnormal
Change the Main Antenna
Abnormal
Change the PBA
Yes
END
8-26
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