Transflash Trouble Shooting - LG L240 Service Manual

4.13 Transflash Trouble Shooting

z Transflsh Operation scheme is shown below.
TF_CLK
TF_DAT0
TF_DAT1
TF_DAT2
TF_DAT3
TF_CMD
R140
FOLDER
C136 NA
VRMMC
S201
SCHB1A0202
1
TF_DAT2 DAT2
2
TF_DAT3 DAT3
3
TF_CMD CMD
4
VDD
9
GND1
10
C201 C214 GND2
1u 0.1u
ENSY0017701
z Transflash Trouble
AA14
MMC1_CLK
W13
MMC1_DAT0
AA13
MMC1_DAT1
V13
MMC1_DAT2
Y15
MMC1_DAT3
R13
MMC1_CMD
NA
P13
GPIO_33
Y13
MMC1_PBIAS
8
DAT1 TF_DAT1
7
DAT0 TF_DAT0
6
VSS
5
CLK TF_CLK
11
GND3
12
GND4
START
Insert Transflash Card
YES
Check the VRMMC level
VRMMC is2.8V?
YES
Check signal of
TF_CLK, CMD, DAT0,DAT1 ,
DAT2,DAT3
YES
S201or U102 has a probem.
Change the main-board
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4. TROUBLE SHOOTING
S201
NO
Refer to Power on
Trouble
NO
Transflash card has a
problem.
Change the Transflash card
R204
R203
R205
R201
R202