Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3-21
3-22
CIRCUIT DIAGRAMS
1. LCD I/F CIRCUIT DIAGRAM
SPK_L-_T
SPK_L+_T
VG-T
STH-T
VB-T
STV-T
SPK_R-_T
VR-T
CKV-T
VCOM-T
OEH-T
KEY0_T
IR-T
OEV-T
CPH1-T
SPK_R+_T
LED-T
VGH-T
5-T
3.3-T
LED+T
VGL-T
KEY1_T
KEY3_T
KEY2_T
SPK_L-_T
SPK_R-_T
IR-T
VR-T
5-T
OEH-T
CKV-T
STH-T
GND
VCOM-T
3.3-T
VB-T
OEV-T
STV-T
KEY3_T
KEY2_T
KEY1_T
KEY0_T
VG-T
CPH1-T
SPK_L-
SPK_L+
SPK_R-
SPK_R+
SPK_L+_T
SPK_R+_T
VGL-T
LED+T
GND
GND_DC
VGH-T
GND_DC
LED-T
IR8202
KEY0
KEY1
KEY2
KEY3
CKV
STVD
STH
OEV
OEH
CPH1
PANEL_VG
PANEL_VB
PANEL_VR
SPK_R+
SPK_R-
SPK_L-
SPK_L+
PANEL_VCOM
+3.3V_SYS
GND_DC
GND_DC
PANEL_VGH
PANEL_VGL
LED+
LED-
GNDA
+5V_BF
L62
0/J/0402
L64
0/J/0603
C212
0.
1U/25V/0603
C330
NC/20P/50V/0402
C202
0.
1U/25V/0603
TP63
1
TP90
1
L71
0/J/0402
C269
NC/20P/50V/0402
C265
NC/20P/50V/0402
L74
0/J/0402
TP88
1
TP64
1
L63
0/J/0402
TP68
1
TP77
1
TP82
1
TP89
1
TP67
1
C227
NC/20P/50V/0402
L13
0/J/0603
TP65
1
TP74
1
C245
NC/20P/50V/0402
C279
NC/20P/50V/0402
TP71
1
C220
0.
1U/25V/0603
L58
0/J/0402
TP66
1
L54
0/J/0402
TP80
1
C229
0.
1U/25V/0603
L16
0/J/0603
CN6
30P/1.0/VA/WAFER
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
5
6
7
8
9
10
TP62
1
C253
NC/20P/50V/0402
TP73
1
L66
0/J/0603
C234
NC/20P/50V/0402
L70
0/J/0402
L56
0/J/0402
TP101
1
L61
0/J/0402
TP79
1
TP81
1
C261
NC/20P/50V/0402
L53
0/J/0402
TP78
1
C243
NC/20P/50V/0402
L17
0/J/0603
C256
NC/20P/50V/0402
TP70
1
C277
NC/20P/50V/0402
L77
0/J/0603
C237
NC/20P/50V/0402
L67
0/J/0603
C233
NC/20P/50V/0402
TP75
1
C218
0.
1U/25V/0603
C273
NC/20P/50V/0402
L75
0/J/0603
TP76
1
C211
0.
1U/25V/0603
TP85
1
C328
NC/20P/50V/0402
L78
0/J/0402
C251
NC/20P/50V/0402
TP83
1
C249
NC/20P/50V/0402
L69
0/J/0603
C242
NC/20P/50V/0402
TP84
1
C221
NC/20P/50V/0402
C238
NC/20P/50V/0402
L76
0/J/0402
L65
0/J/0402
TP87
1
C329
NC/20P/50V/0402
L68
0/J/0603
C250
NC/20P/50V/0402
L59
0/J/0402
C327
NC/20P/50V/0402
C262
NC/20P/50V/0402
L73
0/J/0402