Circuit Diagrams; Lcd I/F Circuit Diagram - LG DP471B Service Manual

CIRCUIT DIAGRAMS

1. LCD I/F CIRCUIT DIAGRAM

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