LG GX500 Service Manual page 89

4. TROUBLE SHOOTING
GX500 Operational Description
Checking Flow
START
Check All of SIM card voltage
GX500 support
2.9V SIM only
16 pins are
soldered well?
Yes
Check Proper SIM
Card
Assemble
uSD Check Points
-Power is working
-Socket soldering
-Card detect is working
LGE Internal Use Only
LG Electronics
No
Resolder pin
Yes
Replace SUB Board
MMC-DETECT PIN
MMC_DETECT SIGNAL
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TP1
Figure 4-24. uSD
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