Transflash Trouble Shooting - LG KM500 Service Manual

4.17 Transflash Trouble Shooting

z Transflsh Operation scheme is shown below.
VREXTH
u-SD CARD
TF_DAT2
TF_DAT3
TF_CMD
TF_CLK
TF_DAT0
TF_DAT1
z Transflash Trouble
Insert Transflash Card
Check the VREXTH level
Check signal of
TF_CLK, CMD, DAT0,DAT1 ,
S900 has a problem.
Change the main-board
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Only for training and service purposes
S900
500873-0802
GND
DAT2_RSV
CD_DAT3_CS
CMD_DI
VDD
CLK_SCLK
VSS
DAT0_DO
DAT1_RSV
GND
C900 C901
7p 1u
TP34_BB
START
YES
VREXTH is2.8V?
YES
DAT2,DAT3
YES
S900
LD000
LD002
NO
Refer to Power on
Trouble
NO
Transflash card has a problem.
Change the Transflash card
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4. Trouble Shooting
LGE Internal Use Only