LG -A120 Service Manual page 44

4.2.3 Checking Flow
Does the SIM Card
supports 1 . 8 V or 3V ?
Check soldering status of J301
and other components
(R313/C29/R317/R318/R319/R
320)
Check TP1 = 3.0V or 1.8V?
Re-download the SW
Check Operation
Change Board
Start
YES
YES
NO
NO
Change the SIM Card . Our phone
supports only 1.8V or 3V SIM Card
NG
Re-soldering J301 or other
components
NG
Change Board
44