Micro Sd Trouble - LG KT610 Service Manual

4.13 Micro SD trouble

Micro SD is worked as below :
→
Micro SD insertion
VMMC_3.1V by STw4810
Start
Insert the Micro SD Card
Does the micro SD icon
appears ?
YES
Work well?
YES
End
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Only for training and service purposes
Card Detect (SD_INT) goes to low
→
go working
NO
SD_INT (D101 Pin#6)
NO
Check VMMC_3.1V
Check the Pull up resistor
R100, RA100
S100 (MicroSD Socket)
R100
RA100
D101
4. TROUBLE SHOOTING
→
STn8810 detect SD_INT and assert
is be low ?
YES
is over 2.85V?
YES
- 123 -
NO
NO
Change the main board
LGE Internal Use Only