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Only for training and service purposes
LGE Internal Use Only
5. TROUBLE SHOOTING
MicroSD Check Points
-Power is working
-Socket soldering
-Card detect is working
START
MicroSD socket
Detect pins(
TP4
)
works well
Check proper
MicroSD?
Resolder it
(check data line
MicroSD D0~D3 is
2.9V Signal)
Replace Main Board
Yes
Yes
No
Check Micro SD card voltage
(VMMC, 2.9V-
TP5
)
Card insert
Card eject
MicroSD_DETECT SIGNAL
Assemble