LG MG180C Service Manual page 96

7. CIRCUIT DIAGRAM
1 2
A
LCD LED DRIVER
VBAT
C303
C302
4.7u
0.1u
LCD_BACKLIGHT
R520 1K
R303
C305
47K 4.7u
B
R304
PWON
680
VA304
EVLC14S02050
300
C
KBR(1)
1
VA306 303
EVL5M02200
KBR(2)
4
VA307 306
EVL5M02200
KBR(3)
7
VA308
*
EVL5M02200
D
KBR(4)
*
VA309 LEFT
EVL5M02200
KBR(0)
LEFT
VA310
EVL5M02200
KBC(0)
KBC(1)
KBC(2)
KBC(3)
E
VA311 VA312 VA313 VA314
EVL5M02200 EVL5M02200 EVL5M02200
1 2
LGIC(42)-A-5505-10:01
3 4 5
U300 AAT3120ITP-20-T1
4
10
IN C1+
C301
1u
3
2
R300
OUT C1-
47K
C2+
1
C304
9
EN_SET 1u
12
C2-
8
D1 LCD_BL_IN
7
D2
6
D3
11
5
GND
NC
POWER
POWER ON KEY
301 302 CLR
2 3 CLR
304 305 F300
5 6 F1
307 308 F301
8 9 F2
SEND
309 SHARP
0 # SEND
RIGHT UP DOWN
RIGHT UP DOWN
EVL5M02200
3 4 5
6 7
LCD CONNECTOR
CN300
C300 1
V_IO
270p 2
3
LCD_RESET INOUT_A6 INOUT_B6 4
6 8
D(0) INOUT_A5 INOUT_B5 5
5 9
D(1) INOUT_A4 INOUT_B4 6
4 10
D(2) INOUT_B3 7
INOUT_A3
3 11
D(3) INOUT_A2 INOUT_B2 8
2 12
D(4) 9
INOUT_A1 INOUT_B1
1 13
10
VA300 11
ICVE31186E150R101FR 12
13
14
LCD_BL_IN 15
16
R301 47
17
18
R302 47
19
20
21
22
_WR INOUT_A6 INOUT_B6 23
6 8
D(8) INOUT_A5 INOUT_B5 24
5 9
D(9) INOUT_A4 INOUT_B4 25
4 10
D(10) INOUT_A3 INOUT_B3 26
11
3
D(11) INOUT_A2 INOUT_B2 27
2 12
D(12) INOUT_A1 INOUT_B1 28
1 13
29
VA302 30
ICVE31186E150R101FR 31
32
33
34
35
VIBRATOR
VBAT VBAT
R305 R306
47K 20
C307 4.7u
1SS302-T5L_F_H
R311
D300
220
R318
1.5K
VIBRATOR
R319
100K
2
L507
EMZ2
82nH
Q300
1
VB300
C311
4.7u
Section
Designer
Checked
Approved
Iss. Notice No. Date Name LG Electronics Inc.
- 95 -
8 9 10
INOUT_B6 INOUT_A6 D(5)
8 6
INOUT_B5 INOUT_A5 D(6)
9 5
INOUT_B4 INOUT_A4 D(7)
10 4
A(1)
INOUT_B3 INOUT_A3
11 3
INOUT_B2 INOUT_A2 MAIN_CS
12 2
IF_MODE
INOUT_B1 INOUT_A1
13 1
VA301
ICVE31186E150R101FR
INOUT_B6 INOUT_A6 D(13)
8 6
INOUT_B5 INOUT_A5 D(14)
9 5
INOUT_B4 INOUT_A4 D(15)
10 4
INOUT_B3 INOUT_A3 _RD
11 3
INOUT_B2 INOUT_A2 LCD_ID
12 2
INOUT_B1 INOUT_A1
13 1
VA303
ICVE31186E150R101FR
VBAT
KEY BACKLIGHT
R309 R312 R313 R314 R315 R316 R317
R307 R308 R310
200 200 200 200 200 200 200 200 200 200
LD302 LD303 LD304 LD305 LD306 LD307 LD308 LD309
LD300 LD301
R320
LEDB
10
VA305
EVL5M02200
Date Sign & Name
MODEL
MG180c
06/02/06 JASON
G.C.LIM
DRAWING
KEY/LCD
NAME
H.KANG
DRAWING
Ver_1.0
NO.
LG Electronics Inc.
A
B
C
D
Sheet/
Sheets
3/5