LG -A290 Service Manual page 92

4.13 SIM2 Card Interface Trouble
VSIM_1
VIO
R225
TP1
DNI
SIM_DATA_1
47K R221
VA215
T_FLASH_SIM_COMBO
MMC_DET
C265
1u
SIM_DATA_2
VA222 VA221
C261
VA223
DNI
LGE Internal Use Only
VSIM_1
J201
TP1
J201
4 1
C5 C1
5 2
C6 C2
6 3
C7 C3
10 7
GND4 GND1
9 8
GND3 GND2
C247
VA216
1u
VSIM_2
VSIM_2
J202
R231
4 1
DNI
C5 C1
5 2
C6 C2
6 3
C7 C3
10 7
GND4 GND1
9 8
GND3 GND2
VA218
C254
1u
VSIM2
C234
1u
SIM2_RST
SIM2_CLK
SIM2_DATA
J201
Figure 4.13.1
SIM_CONNECTOR
SIM_RST_1
SIM_CLK_1
VA217 C249
DNI
SYS_RESET
SIM_CONNECTOR
TP200
SIM1_CLK
15
TP201
SIM1_RST
14
TP202
SIM1_DATA
SIM_RST_2
13
SIM_CLK_2
VA219
VA220 16
C256
DNI
17
18
20
I2C_SCL2
21
I2C_SDA2
22
- 9 -
4. TROUBLE SHOOTING
Dual SIM Controller
VIO
VBAT
VSIM_1
C238
C237
VSIM_2
C239 1u
2.2u
2.2u
C257
1u
VSIM1
5
SCLK1/GPIO1
6
SIMCLK1/GPI13 SRST1/GPIO2
7
SIO1/GPIO3
8
SIMRST1/GPI14
VSIM2
3
SIMIO1/GPI15 SCLK2/GPIO4
2
SRST2/GPIO5
1
SIO2/GPIO6
28
SIMCLK2/GPI16
VSIM3
27
SIMRST2/GPI17 SCLK3/GPIO7
24
SRST3/GPIO8
25
SIMIO2/GPI18 SIO3/GPIO9
26
U202
CE0 VSIM4
9
SCLK4/GPIO10
10
SCL SRST4/GPIO11
11 C259
SIO4/GPIO12
12
SDA
Copyright © 01 LG Electronics. Inc. All right reserved.
Only for training and service purposes
U202
TP2
C258
1u
SIM_CLK_1
SIM_RST_1
SIM_DATA_1
SIM_CLK_2
SIM_RST_2
SIM_DATA_2
TP3
VSIM1
R241
0
1u