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7. CIRCUIT DIAGRAM
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
L
K
J
I
H
G
F
E
D
C
B
A
L
K
J
I
H
G
F
E
D
C
B
A
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
10
RA101
8
7
6
5
4
3
2
1
LCD_LDO_1.8V
KEYPAD_BUTTON
KB101
VA101
EVLC14S02050
LCD_LDO_2.8V
KB102
KEYPAD_BUTTON
KB103
KEYPAD_BUTTON
KB104
KEYPAD_BUTTON
GB042-50S-H10-E3000
CN101
26
25
27
24
28
23
29
22
30
21
31
20
32
19
33
18
34
17
35
16
36
15
37
14
38
13
39
12
40
11
41
10
42
9
43
8
44
7
45
6
46
5
47
4
48
3
49
2
50
1
EVLC14S02050
VA102
VA103
EVLC14S02050
VA104
EVLC14S02050
KEYPAD_BUTTON
KB105
KB106
KEYPAD_BUTTON
KB107
KEYPAD_BUTTON
KEYPAD_BUTTON
KB108
VA105
EVLC14S02050
EVLC14S02050
VA106
311HR-VG1
M101
4.7K
R102
KEYPAD_BUTTON
KB109
VA107
EVLC14S02050
VA108
EVLC14S02050
KEYPAD_BUTTON
KB110
KEYPAD_BUTTON
KB111
u2.
21
01
C
1u
C102
+VPWR
C103
1u
C104
1u
1u
C105
19-217UTD_S887-2_TR8
LD101
C106
1u
1u
C107
V
8.
2
_
O
D
L
_
D
C
L
V
8.
1
_
O
D
L
_
D
C
L
RT9367C
U101
1
2
20
19
18
8
7
6
5
9
4
10
3
1
1
2
2
1
1
13
4
1
15
16
17
LED3
LED4
NC2
2
O
D
L
AVIN
N
1
C
1
O
D
L
N
2
C
D
N
G
A
D
N
G
P
NC1
P
2
C
ENA
P
1
C
PVIN
SCL
SDA
LED2
LED1
VOUT
G
_
G
U
L
S
K0
33
60
1
R
+VPWR
VA109
EVLC14S02050
R
W
P
V
+
CN102
04-6293-035-000-829
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
LCD_LDO_1.8V
K7
4
50
1
R
19-217UTD_S887-2_TR8
LD103
2.2u
C108
EVLC14S02050
VA110
LD104
19-217UTD_S887-2_TR8
19-217UTD_S887-2_TR8
LD102
WLED_1
WLED_1
WLED_2
WLED_2
WLED_3
WLED_3
LCD_IF[2]
LCD_IF[2]
LCD_IF[1]
LCD_IF[1]
LCD_VSYNC
LCD_VSYNC
EBI2_OE_N
EBI2_OE_N
EBI2_WE_N
EBI2_WE_N
LCD_ADS
LCD_ADS
LCD_RST
LCD_RST
LCD_CS_N
LCD_CS_N
EBI2_DATA[15]
EBI2_DATA[15]
EBI2_DATA[14]
EBI2_DATA[14]
EBI2_DATA[13]
EBI2_DATA[13]
EBI2_DATA[12]
EBI2_DATA[12]
EBI2_DATA[11]
EBI2_DATA[11]
EBI2_DATA[10]
EBI2_DATA[10]
EBI2_DATA[9]
EBI2_DATA[9]
EBI2_DATA[8]
EBI2_DATA[8]
EBI2_DATA[7]
EBI2_DATA[7]
EBI2_DATA[6]
EBI2_DATA[6]
EBI2_DATA[5]
EBI2_DATA[5]
EBI2_DATA[4]
EBI2_DATA[4]
EBI2_DATA[3]
EBI2_DATA[3]
EBI2_DATA[2]
EBI2_DATA[2]
EBI2_DATA[1]
EBI2_DATA[1]
EBI2_DATA[0]
EBI2_DATA[0]
LCD_MAKER_ID
LCD_MAKER_ID
KEY_ROW[4]
KEY_ROW[4]
KEY_ROW[0]
KEY_ROW[0]
KEY_ROW[1]
KEY_ROW[1]
KEY_ROW[2]
KEY_ROW[2]
KEY_ROW[3]
KEY_ROW[3]
KEY_COL[3]
KEY_COL[3]
KEY_COL[4]
KEY_COL[4]
KPDPWR_N
KPDPWR_N
VBACK_UP
VBACK_UP
I2C_SCL_BL
I2C_SCL_BL
I2C_SDA_BL
I2C_SDA_BL
LCD_LDO_EN
LCD_LDO_EN
SUB_BACKLIGHT
SUB_BACKLIGHT
+VPWR|WLED_PWR
WLED_PWR
WLED_PWR
M_MIDDLE_RIGHT
N_DOWN
M_DOWN_LEFT
BACKUP BAT.(SUPER CAP.)
N_CENTER
KEY LED
M_M_LEFT
CHARGE PUMP & DUAL LDO
KEY MAP
N_LEFT
N_UP
N_RIGHT
LCD ZIP CON.(35 PINS)
M_UP_LEFT
KEY BAOARD CON.(50 PINS)
M_UP_RIGHT
END KEY
M : MENU
N : NAVIGATION
Pin number is reversed(1 => 35) in REV.A
<GU280_KEY_REV.1.0>