LG KE990 Service Manual - Page 103
Micro SD trouble
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4. TROUBLE SHOOTING 4.10 Micro SD trouble Micro SD is worked as below : Micro SD insertion → MICROSD_DETECT(R804) goes to low → go working Start Inser t the Micr o SD Card MICROSD_DETECT(R804) NO is low ? YES Check VREG_ MMC_3.0V NO is o ver 2.85V? YES NO Work w ell? YES End Chan ge the SUB b oard Work w ell? YES NO Chan ge the MAIN board SOCKET R804(DETECT) C807(VREG_MMC_3.0V) LGE Internal Use Only - 104 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc.
All right reserved.
Only for training and service purposes
4.10 Micro SD trouble
Micro SD is worked as below :
Micro SD insertion
→
MICROSD_DETECT(R804) goes to low
→
go working
4. TROUBLE SHOOTING
- 104 -
MICROSD_DETECT(R804)
is low ?
Insert the Micro SD Card
Start
End
Check VREG_MMC_3.0V
is over 2.85V?
Work w ell?
YES
NO
SOCKET
R8
04(DETECT)
YE
S
Chan ge the SUB b oard
Work w ell
?
YES
NO
NO
Chan
ge the MAIN board
YES
NO
C807(VREG_MMC_3.0V)