LG KF350 Service Manual page 84

uSD Check Points
-Power is working
-Socket soldering
-Card detect is working
MMC_DETECT SIGNAL
Check Micro SD card voltage
(2V8_VMME)
TF socket pins
are well soldered
Check proper
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Only for training and service purposes
MMC-DETECT PIN
Card insert
START
No
Yes
Yes
uSD?
Assemble
4. TROUBLE SHOOTING
Card Deject
Resolder it
(check data line
TP 1~4 is 2.9V
Signal)
Replace Main Board
- 85 -
TP1
TP2
TP3
TP4
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