![background image](http://html.mh-extra.com/html/sharp/lc-20dv20u/lc-20dv20u_service-manual_373836061.webp)
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
W820
W897
W885
C139
1B
C126
0.01
B
C128
0.1
F
C109
0.1
B
C107
0.1
F
C113
0.1
B
C114
18P
CH
C118
0.1
B
C111
18P
CH
C117
0.1 F
C106
0.1 B
C123
0.1 B
C104
0.1 B
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
R200
1K
R199
1K
R106
4.7K
R156
4.7K
R154
4.7K
R157
4.7K
R155
4.7K
R112
1K
R10927K
R147
100
R146
100
R103
2.2K
R105
4.7K
R160
10K
R161
4.7K
R149
10K
R189
10K
R188
10K
R135
10K
R114
100
R115
100
R116
4.7K
R117
4.7K
R111
10K
R197
4.7K
R163
1K
R138
4.7K
R129
4.7K
R118
4.7K
R107
4.7K
R140
4.7K
R104
2.2K
R175
100
R178
4.7K
R123
1K
R120
1K
R119
4.7K
R122
4.7K
R145
100
R181
1K
R141
100
R193
5.6K
R192
5.6K
R195
100
R134
1K
R102
10K
R158
4.7K
R159
4.7K
R194
100
R142
100
R151
10K
R136
4.7K
R165
4.7K
R153
4.7K
R137
4.7K
R131
10K
C101
220
6.3V
V-S
C125
100
6.3V
V-S
C131
0.47
50V
V-S
C136
2.2
50V
V-S
C110
220
6.3V
V-S
C116
220
6.3V
V-S
IC103
AT24C256N-10SU-2.7
EEP ROM IC 256K
1
2
3
4
5
6
7
8
IC104
AT24C256N-10SU-2.7
EEP ROM IC 256K
1
2
3
4
5
6
7
8
D101
UDZS5.6B
D106
UDZS5.6B
Q101
KRC103SRTK
SW
X101
16MHz
100WT01611
Q105
KRA103SRTK
SW
IC102
PST3229NR
RESET IC
1
2
3
4
5
D109
RB520S-30-TE61
D105
RB520S-30-TE61
IC101
OEC7155B
MICOM
1
10
100
11
12
13
14
15
16
17
18
19
2
20
21
22
23
24
25
26
27
28
29
3
30
31
32
33
34
35
36
37
38
39
4
40
41
42
43
44
45
46
47
48
49
5
50
51
52
53
54
55
56
57
58
59
6
60
61
62
63
64
65
66
67
68
69
7
70
71
72
73
74
75
76
77
78
79
8
80
81
82
83
84
85
86
87
88
89
9
90
91
92
93
94
95
96
97
98
99
CP102
A2001WV2-10P
MICON_DATA
1
10
2
3
4
5
6
7
8
9
CP101
A2001WV2-5P
1
2
3
4
5
JG134
JG112
JG136
JG116
JG118
JG137
JG101
JG120
JG130
JG131
JG114
JG107
JG135
JG129
JG127
JG102
JG105
JG106
JG103
JG104
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
CAUTION: DIGITAL TRANSISTOR
CP103
A2001WV2-7P
PC_CONTROL
1
2
3
4
5
6
7
CAUTION: DIGITAL TRANSISTOR
S
D
G
Q106
KTK5132E
LEVEL SHIFT
S
D
G
Q104
KTK5132E
LEVEL SHIFT
EEPROM_SCL
P.CON+5V
SCART_AUDIO_SW
DVD_POWER
DVB_RESET-L
DVD_RX
DVB_POWER_CTL-H
DVD_TX
DVB_MUTE-L
START_SW
DVD_RESET
EEPROM_SDA
KEY-A
SD_H
KEY-B
AT+5V
AUDIO_MUTE
EXT_MUTE-H
SCART1_Y
STEREO_RESET
DVS
DVB_FAN_ON-H
SCALER-H
DVB_FAN_ON-H
START_SW
DVD/AV3
STANDBY_LED
DTUNER_H
DVD_RESET
STANDBY_LED
REMOCON_IN
AFT
SCALER_RESET
S_DET
SD_SW1
SCART1_Y
EXT_MUTE-H
POWER_FAIL
SW_SCART
POWER_ON-H
LCD-H
IIC_OFF
LCDON
LIGHT_CTL
LCD-H
AFT_1[LOW]
STEREO_RESET
SDA1
AFT_2[HIGH]
SCL1
4SI_SCL
LCDON
4SI_SDA_IN
4SI_SDA_OUT
AT+3.3V
4SI_CHIP_SE
HDMI_H
AUDIO_MUTE
SCALER_RESET
SCALER_RESET
4SI_CHIP_SE
S_DET
AFT
4SI_SCL
SW_SCART
KEY-B
DVB_RX
4SI_SDA_IN
SCART_AUDIO_SW
4SI_SDA_OUT
KEY-A
DVB_TX
RST1
CLK1
DVS
DVD_RX
DVD_TX
DVB_MUTE-L
DVB_RX
DTUNER_H
DVB_TX
EEPROM_SCL
DVB_RESET-L
DVD/AV3
DVB_POWER_CTL-H
EEPROM_SDA
AFT_1[LOW]
IIC_OFF
AFT_2[HIGH]
SD_H
DDVS
DVD_TX
SCL1
SDA1
RST1
DDVS
AT+5V
P.CON+3.3V
CLK1
DVD_RX
CNVSS
HDMI_H
AT+3.3V
P.CON+3.3V
SCALER-H
P.CON+5V
4SI_CHIP_SE
4SI_SDA_OUT
4SI_SDA_IN
REMOCON_IN
POWER_FAIL
POWER_ON-H
AT+5V
DVD_POWER
LIGHT_CTL
4SI_SCL
C_SYNC
HDMI_H
CNVSS
SCL1
SDA1
GND
EEPROM_SCL
EEPROM_SDA
C_SYNC
SD_SW1
H-18
H-17
(SCALER PCB)
PCBDS0
CEF170
5.0
5.0
5.0
FROM WRITER
GND
TX
BUSY
VCC
RX
CLK
GND
NC
CNVSS
RESET
CHIP_SELECT
RESET
AT+3.3V
FROM/TO INTERFACE_HDMI IC
NC
NC
NC
NC
NC
NC
NC
2.8 2.8
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
MICON SCHEMATIC DIAGRAM
GND
EEPROM_SCL
EEPROM_SDA
IIC_OFF
GND
OUT
NC
IN
NC
GND
0
0
3.2
0
0
3.2
3.2
0
0
0
3.2
3.2
3.4
3.2 3.2
0
0
0
0 3.2 3.3
0 3.09 3.2 3.2 3.3 3.16 3.2
0
0 3.2
0
0 3.2
0
0
3.2
3.2
3.2
0
0
0
3.2
3.4
3.4
0
0
SDA
SCL
TEST
VCC
SDA
SCL
TEST
VCC
A0
A1
GND
4SI_SDA_IN
GND
4SI_SDA_OUT
AVCC
VREF
4SI_CHIP_SE
POWER FAIL
REMOCON IN
XIN
XOUT
VSS
BYTE
CNVSS
RESET
NC
LIGHT_CTL
AVSS
KEY-A
POWER ON-H
(32KHz_OUT)
(32KHz_IN)
C_SYNC
4SI_DATA_OUT
4SI_DATA_IN
4SI_CLK
VCC1
SYNC_HD_IN
DVD POWER ON-H
DVD_TX
DVD_RX
(CLK1)
(RST1)
DVB_TX
SCL1
SDA1
26
27
28
DDVS
99
100
98
DVD/AV3
NC
DTUNER_H
NC
NC
HDMI_MUTE
NC
NC
5.0
5.0
0
5.0
0
5.0
5.0
5.0
14
FROM/TO REGULATOR
FROM/TO AV SWITCH1
FROM/TO ADC
FROM/TO JACK
5.0
0
4.9
3.2
0
3.2
0
3.2
0
0
0
3.2
3.2
0
0
3.2
0
0
1.4
3.2
0
0
0
0
0
0
0
3.2
3.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2.51
3.2
3.4
3.2 3.2
3.2
0
0
0
0
0
VSS
A2
A1
A0
0
0
0
0
4SI_SCL
0
0
3.3
FROM/TO SCALER
HDMI/DVI
P50/^WRL/^WR
SD_SW1
49
48
50
47
VSS
EEPROM_SCL
EEPROM_SDA
STEREO_RESET
HP_MUTE
IIC_OFF
LCD_H
KEY-B
DVD_RESET
V_SYNC
EPM
COMPONENT/HDMI
SCART_AUDIO_SW
SCALER_RESET
SCART3_SW
AUDIO_MUTE
EXT_MUTE-H
DVB_RX
SC2_CVBS_OUT-H
DVB_FAN_ON-H
VCC2
A_TUNER_AGC_IN
COMPOSITE/RGB
DVB_ASPECT_IN
5VD
76 SCALER-H
75 HEADPHONE_IN
DISC_IN_DET
S_JACK_IN_DET
A_TUNER_AFT
DVB_RESET-L
DVB_POWER_CTL-H
DVB_MUTE-L
SCALER_SW
YUV_SW
SW_SCART/COMPONENT_SW
SCART1_SW/S_DET!
SCART2_SW/S_DET2
SD_H
DVB_SW-H
NC
SC2_AUDIO_OUT-H
HDMI_H
LCDON
VS_ON
PDP_RLY
STANDBY_LED
AFT_1[LOW]
AFT_2[HIGH]
NC
NC
NC
NC
NC
NC
NC
5.0
3.3
3.3
5.0
3.3
3.3