Sim Detect Trouble - LG GD910 Service Manual

5. Trouble shooting

5.5 SIM Detect Trouble

Checking Flow
Checking Flow
Start
Start
Change SIM Card. Change SIM Card.
Work well? Work well?
Check soldering of Check soldering of
Is 2V9_VSIM(C225) 3.0V?
2V9 VSIM(C236) is 3.0V?
Check TP1
Click TP1
Do SIM CLK(C248),
SIM_IO(C245)
Work well?
Click TP2
EN EN
LGE Internal Use Only
YE
N N
N N
J200 J301
YE YE
N N
YE YE
N N
YE YE
GD910 service manual
END
EN
Resolde J301 Resolde J200
Check C229 or Check C236 or
Change U200 Change U202
Change the main board
Change the main board
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Only for training and service purposes