LG GD310 Service Manual page 86

uSD Check Points
-Power is working
-Socket soldering
-Card detection is working
MMC-DETECT PIN
MMC_DETECT SIGNAL
Card insert
START
Check Micro SD card voltage
(2V8_VMME)
TF socket pins
are well soldered
Check proper
uSD?
Assemble
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Only for training and service purposes
No
Yes
Yes
Card
Detection
Resolder it
(check data line
TP 1~4 is 2.9V
Signal)
Replace Main Board
- 87 -
5. TROUBLE SHOOTING
TP1
TP2
TP3
TP4
LGE Internal Use Only