LG KM380t Service Manual page 80

uSD Check Points
-Power is working
-Socket soldering
-Card detect is working
VIO_2V62
uSD_DET
uSD_D1
uSD_D0
TP2
uSD_CLK
uSD_CMD
uSD_D3
uSD_D2
C245
1000 pF
Card insert
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Only for training and service purposes
START
Check All of SIM card voltage
KM380 Series support
1.8V & 2.9V SIM only
6 pins are
soldered well?
Ye
Check Proper
SIM Card
Assemble
2V8_VMM
uSD CARD
S1 DM3AT-SF-PEJ
SWA SWB
8
7
6
TP1
5
4
3
2
1
TP4
TP3
GND
C246 C247
10p 1u
N
Resolder pin
Yes
Replace Main
Board
TP3(D2 TP
TP4(D3 TP
TP1(D0 TP
TP2(D1 TP
Card eject
- 81 -
6. Trouble shooting
D2)
D3)
D0)
D1)
LGE Internal Use Only