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LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
CIRCUIT
WAVEFORM
TP1
TP1
26MHz
X201
TSX-3225
2
1
3
4
GND2
HOT2
HOT1
GND1
2V85_VSIM
0.1u
C224
E1
G4
G5
F2
F3
F1
D2
D1
E2
M10
A13
B13
K14
K13
B4
A5
B5
A4 USIF1_TXD_MTSR
USIF1_RXD_MRST
USIF1_RTS_N
USIF1_CTS_N
DPLUS
DMINUS
XOX
XO
VSIM
SIM_IO
SIM_CLK
SIM_RST
MMCI_CMD
MMCI_DAT_0
MMCI_CLK
MMCI_DAT_1
MMCI_DAT_2
MMCI_DAT_3
USB_DP
USB_DM
UART_TX
SIM_DATA
SIM_CLK
MSD_CLK
MSD_D[1]
MSD_D[0]
MSD_CMD
MSD_D[3]
MSD_D[2]
BT_UART_TX
BT_UART_RX
UART_RX
SIM_RST_N
Connect GND plane directly
Close to the 26MHz XTAL
TP1