Transflash Trouble Shooting - LG KM710 Service Manual

4.18 Transflash Trouble Shooting

z T- flash Operation scheme is shown below.
VRIO
R101
100K
TF_DAT2
TF_DAT3
TF_CMD
TF_CLK
TF_DAT0
TF_DAT1
TFLASH_DETECT
C112
22p
z Transflash Trouble
TF_CLK, CMD, DAT0,DAT1 ,
Main board has a problem.
Change the main-board
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
MM_2V8
S100 SCHA1B0102
DAT2_RSV
CD_DAT3_CS
CMD_DI
VDD
CLK_SCLK
VSS
DAT0_DO
DAT1_RSV
COMMON
DETECT
C113
DUMMY1
1uF
DUMMY2
START
Insert Transflash Card
YES
Check the MM_2V8 level
MM_2V8 is 2.8V?
YES
Check signal of
DAT2,DAT3, DETECT
YES
Check the flexible PCB
YES
SUB Flexible PCB
NO
Refer to Power on
Trouble
NO
Transflash card has a
problem. Change the
Transflash card
NO
Change the flexible PCB
- 93 -
4. Trouble Shooting
LGE Internal Use Only