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7. CIRCUIT DIAGRAM
1
1
2
2
3
3
SUB FPCB
A
A
B
B
R100
VREG_USIM_3.0V
J100
1
VCC
2
USIM_P_RST_N
RST
3
USIM_P_CLK
CLK
C102
C103
C112
33p
1u
33p
C
C
USIM
D
D
MICROSD_DATA(2)
MICROSD_DATA(3)
MICROSD_CMD
MICROSD_CLK
MICROSD_DATA(0)
MICROSD_DATA(1)
MICROSD_DETECT
E
E
F
F
V_BACK_UP
BACK_UP BATTERY
G
G
H
H
1
1
2
2
3
3
LGE Internal Use Only
4
4
5
5
6
6
15K
VREG_MSMP_2.7V
6
I_O
USIM_P_DATA
5
VPP
4
GND
KEY_ROW(0)
KEY_COL(4)
VREG_MMC_3.0V
S1
SCHA1B0102
DAT2_RSV
CD_DAT3_CS
CMD_DI
VDD
CLK_SCLK
VREG_MSMP_2.7V
VSS
DAT0_DO
DAT1_RSV
+VPWR
COMMON
DETECT
DUMMY1
DUMMY2
LED1
DIAL_DETECT1
Micro SD
SUB PCB TO DIAL KEY FPCB
BAT100
C111
1u
4
4
5
5
6
6
7
7
8
8
9
9
VREG_USIM_3.0V
VREG_MMC_3.0V
VREG_MSMP_2.7V
CN100
G1
1
34
OK
2
33
3
32
4
31
5
30
6
29
7
28
8
27
9
26
10
25
11
24
MICROSD_DETECT
12
23
13
22
USIM_P_RST_N
14
21
USIM_P_CLK
15
20
USIM_P_DATA
16
19
FLASH_LED_STROBE
17
18
FLASH_LED_TORCH
G2
SIDE KEY
40PIN CONNECTOR TO MAIN
CN101
G1
G2
1
10
R102
2
9
LED1
3
8
LED2
0
4
7
DIAL_DETECT2
R103
5
6
DIAL_PDN
LED2
0
G3
G4
PMIC_DIAL_LED_EN
DIAL KEY LED
7
7
8
8
9
9
- 134 -
10
10
11
11
12
12
+VPWR
DIAL_DETECT1
DIAL_DETECT2
DIAL_PDN
PMIC_DIAL_LED_EN
MICROSD_DATA(2)
MICROSD_DATA(3)
MICROSD_CMD
MICROSD_CLK
MICROSD_DATA(0)
MICROSD_DATA(1)
V_BACK_UP
KEY_ROW(0)
KEY_COL(4)
INS100
INS101
+VPWR
LM2758TL
U100
C105
2.2u
C1
B1
VBAT
C1+
C106
A1
FLASH_LED_STROBE
EN1
1u
B3
FLASH_LED_TORCH
EN2
R104
15K
A3
D2
ISET
C1-
D3
C2
PGND
C2+
A2
SGND
C109
1u
C3
LED-
B2
D1
FLASH LED
CPOUT
C2-
C110
2.2u
STROBE 650mA
TORCH 150mA
10
10
11
11
12
12
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C
C
D
D
E
E
F
F
G
G
H
H
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Troubleshooting
