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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. TROUBLE SHOOTING
uSD Check Points
-Power is working
-Socket soldering
-Card detection is working
MMC-DETECT PIN
Card insert
Card
Detection
MMC_DETECT SIGNAL
TP1
TP2
TP4
TP3
START
TF socket pins
are well soldered
Check proper
uSD?
Assemble
Resolder it
(check data line
TP 1~4 is 2.9V
Signal)
Replace Main Board
Yes
Yes
No
Check Micro SD card voltage
(2V8_VMME)
Содержание AR140B
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