LG 32CM540-CA / 42CM540-CA / 47CM540-CA Service Manual ▷ View online
5
HDMI 输入 (PC/DTV)
No Resolution H-freq(kHz) V-freq.(Hz)
Pixel
clock(MHz)
Proposed
HDMI-PC
1
720*400
31.469
70.08
28.32
DOS
2
640*480
31.469
59.94
25.17
VESA
3
800*600
37.879
60.31
40.00
VESA
4
1024*768
48.363
60.00
65.00
VESA
5
1360*768
47.712
60.015
85.50
VESA
6 1280*1024
63.981
60.020
108.00
VESA
7 1920*1080
67.5
60
148.5
VESA
HDMI-DTV
1
720*480
31.469
59.94
27.00
SDTV 480P
2
720*576
31.25
50
27.00
SDTV 576P
3
1280*720
37.50
50.00
74.25
HDTV 720P
4
1280*720
44.96
59.94
74.176
HDTV 720P
5 1920*1080
33.75
60.00
74.25
HDTV 1080I
6 1920*1080
28.125
50.00
74.25
HDTV 1080I
7 1920*1080
67.500
60
148.50
HDTV 1080P
8 1920*1080
56.250
50
148.50
HDTV 1080P
9 1920*1080
27.000
24.000
74.25
HDTV 1080P
10 1920*1080
26.97
23.976
74.176
HDTV 1080P
11 1920*1080
33.75
30.000
74.25
HDTV 1080P
12 1920*1080
33.71
29.97
74.176
HDTV 1080P
6
主板重要节点电压
序号
名称
最大(V)
最小(V)
1
F1
(5BSB)
5.50
4.50
2
F2
(12V)
13.20
10.80
3
F3
(USB
5V)
5.50
4.50
4
F4
(OP
AMP
&
RF
T
UNER
)
13.20
10.80
5
CE3
(5VSW)
5.50
4.50
6
CE6
(3V3SB)
3.63
2.97
7
CE4
(VDDC_1V2)
1.32
1.08
8
CE18
(3V3SW)
3.63
2.97
9
CE7
(2V5SW)
2.75
2.25
10
CE8
(DDRV)
3.63
2.97
11
CE11
(TUNER_5V)
5.50
4.50
12
CE16
(PANEL_VDD)
13.20
10.80
7
II. 主板输入/输出接口
接口引脚定义
J4
電源板
接口
Pin
Description
1
+5VSB
2
+5VSB
3
+5VSB
4
GND
5
GND
6
GND
7
GND
8
+12V
9
+12V
10
+12V
11
POWER_SW_ON_OFF
12
BL_ON_OFF
13
BL_NG
14
BL DIMMING
J14
IR 板
接口
Pin
Description
1
RED_LED
2
BLUE_LED
3
IRIN
4
3V3SW
5
5VSB
6
GND
7
NC
8
NC
J5
喇叭接口
Pin
Description
1
R+
2
R-
3
L+
4
L-
8
P1
显示屏接口
P
IN
Description
1
GND
2
GND
3
NC
4
NC
5
GND
6
RXE3P
7
RXE3N
8
GND
9
RXECP
10
RXECN
11
GND
12
RXE2P
13
RXE2N
14
GND
15
RXE1P
16
RXE1N
17
GND
18
RXE0P
19
RXE0N
20
GND
21
NC
22
LVDS_OPTION
23
GND
24
GND
25
GND
26
GND
27
+12V
28
+12V
29
+12V
30
+12V
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