Sim Card Interface Trouble - LG -T370 Service Manual

4.11 SIM Card Interface Trouble

TP1 : C225
Connect GND plane directly
R213
2V85_VSIM
0
C225
0.1u
JTAG_TRST_N
SIM_SEL
SIM_DATA_1
SIM_CLK
SIM_RST_N
VA308
C315
C316
33p
33p
LGE Internal Use Only
TP1 A13
XO
M10
VSIM
E2
SIM_DATA SIM_IO
D1
SIM_CLK SIM_CLK
D2
SIM_RST_N SIM_RST
F1
MSD_CMD MMCI_CMD
F3
U201
MSD_D[0] MMCI_DAT_0
F2
MMCI_CLK
MSD_CLK
G5
MSD_D[1] MMCI_DAT_1
G4
MSD_D[2] MMCI_DAT_2
E1
MMCI_DAT_3
MSD_D[3]
H14
LCD_RST_N SWIF_TXRX
J17
TDO
JTAG_TDO
J18
JTAG_TDI TDI
G18
JTAG_TMS TMS
H18
TCK
JTAG_TCK
H17
TRST_N
K18
TRIG_IN
J15
MON1
2V85_VSIM
2V85_VSIM
PIN #1
VA309
C317
33p
C321
0.1u
PIN#1
Figure 4.13
RF
VDDP_SIM
VDDP_MMC
VDDP_DIG1
I/O1 CLK2
C7 C3_1
CLK1 I/O2
C3 C7_1
VPP1 RST2
S301
C6 C2_1
RST1 VPP2
5000-12P-2_95D-A1-R0
C2 C6_1
GND1 EAG63211701 VCC2
C5 C1_1
VCC1 GND2
C1 C5_1
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4. TROUBLE SHOOTING
2V85_VSIM 2V85_VSIM
VA311
C318
C319
VA310 C323
C320
33p
33p
33p
0.1u
Only for training and service purposes
SIM_CLK
SIM_DATA_2
SIM_RST_2
VA312