![background image](http://html.mh-extra.com/html/sharp/lc-20dv20u/lc-20dv20u_service-manual_373836062.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
B804
FCM1608CF-600T06
B805
BLM18PG181SN1D
B803
FCM1608CF-600T06
B801
BLM18PG181SN1D
B802
BLM18PG181SN1D
NR801
4D03WGJ0000T5E
NR806
4D03WGJ0470T5E
NR802
4D03WGJ0470T5E
NR803
4D03WGJ0470T5E
NR804
4D03WGJ0470T5E
NR805
4D03WGJ0470T5E
NR807
4D03WGJ0470T5E
NR808
4D03WGJ0103T5E
NR809
4D03WGJ0103T5E
IC801
R8J66607A72FP
SCALER
101 102 103 104 105 106 107 108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
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
CP802
00_6232_030_
1
10
11
12
13
14
15
16
17
18
19
2
20
21
22
23
24
25
26
27
28
29
3
30
4
5
6
7
8
9
D808
1SS355
D807
1SS355
CP803
00_6232_029_
1
10
11
12
13
14
15
16
17
18
19
2
20
21
22
23
24
25
26
27
28
29
3
4
5
6
7
8
9
W905
W810
W883
W803
W802
W931
W809
W930
W801
W929
W873
W875
W805
W807
W824
C810
0.1 B
C877
0.1
B
C873
0.1
B
C871
0.1
B
C862
0.1
B
C852
0.1
B
C849
0.1
B
C868
7P
CH
C861
7P
CH
C7241
2.2
B
C7240
2.2
B
C7239
2.2
B
C7238
2.2
B
C7242
2.2
B
C888
0.001
B
C887
0.01
B
C835
0.1
B
C821
0.1 B
C893
0.1 B
C892
0.1 B
C891
0.1 B
C801
1
B
C858
0.1
B
C875
0.1
B
C823 0.1 B
C824
0.1 B
C832
0.1 B
C855
0.1
B
C836
0.1 B
C837
0.1 B
C838
0.1 B
C839 0.1 B
C840 0.1 B
C841 0.1 B
C842
0.1 B
C843
0.1 B
C844
0.1 B
C846
0.1 B
C847
0.1 B
C845
0.1 B
C859 0.1 B
C876 0.1 B
C834 0.1 B
C819
0.1 B
C817
0.1 B
C870
0.1
B
C872
0.1
B
C884
0.1
B
C879
0.1
B
C897
0.1 B
C896
0.1 B
C895
0.1 B
C894
0.1 B
C813
0.1 B
C889
0.1 B
C886
0.1
B
C878
0.1
B
C863
0.1
B
C860
0.1
B
C857
0.1
B
C853
0.1
B
C851
0.1
B
C814
0.1 B
C816
0.1 B
C812
0.1 B
C818
0.1 B
C826
0.1 B
C830 0.1 B
C820
0.1 B
C827
0.1 B
C883 0.1 B
C822
0.1 B
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
R831
10K
R823
10K
R821
10K
R819
10K
R817
10K
R828
10K
R826
10K
R830
470
R825
1M
R822
10K
R820
10K
R818
10K
R845
47
R844
47
R829
10K
R836
1K
R846
47
R833
47
R835 10K R834
10K
R805
10K
R804
10K
R807
10K
R806
10K
R808
390
C856
220
6.3V
V-S
C850
220
6.3V
V-S
C898
220
6.3V
V-S
C2802_1
470
4V
V-S
C2801_1
470
4V
V-S
C815
220
6.3V
V-S
D802
UDZS5.6B
D805
UDZS5.6B
D803
UDZS5.6B
X801
54MHz
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
STANDBY_LED
DPR3
DPR2
DPR1
DPR0
DPB7
DPB6
DPB5
DPB4
DPB3
DPB2
DPB1
DPB0
DPG7
DPG6
DPG5
DPG4
DPG3
DPG2
DPG1
DPG0
DDCK
GND
REMOCON_IN
P.CON+3.3V
AFT
AUDIO_MUTE
EXT_MUTE-H
SW2_B/CB
SW2_G/Y
SW2_R/CR
DDHS
STANDBY_LED
DDVS
DDCK
REMOCON_IN
AFT_2[HIGH]
AFT
DPR7
GND
DPR6
SCART1_Y
DPR5
SCART1_Y
EXT_MUTE-H
DPR4
DPR4
DPR3
POWER_FAIL
DPR5
DPR2
POWER_ON-H
DPR6
DPR1
POWER_FAIL
DPR0
LCD-H
DPR7
POWER_ON-H
DDVS
DPG7
LCDON
DPG6
AFT_1[LOW]
DDHS
LIGHT_CTL
DPG5
LCDON
DPG4
STEREO_RESET
DPG3
DVB_FAN_ON-H
AUDIO_MUTE
DPG2
LCD-H
SW_CVBS
DPG1
SDA1
DPG0
S_DET
SCL1
DPB7
SCALER_RESET
DPB6
SW_SCART
DPB5
4SI_CHIP_SE
DPB4
4SI_SDA_OUT
DPB3
DPB2
4SI_SDA_IN
DPB1
4SI_SCL
LIGHT_CTL
DPB0
S_DET
DR9
SW_SCART
SW_R/SW_CR
DR8
SCART_AUDIO_SW
DR7
DVD/AV3
DR6
DVS
DTUNER_H
DVB_FAN_ON-H
DVB_MUTE-L
DTUNER_H
DR2
DVD/AV3
DR3
DVB_MUTE-L
DR5
DVB_RX
DR4
DR4
DVB_RX
DR5
DR3
DVB_TX
DR6
DR2
DVB_TX
DR7
DVB_RESET-L
DR8
DB9
DVB_POWER_CTL-H
SW_VIDEO_C
DR9
DB8
SD_H
DVB_RESET-L
DB7
DG2
AFT_1[LOW]
DB6
DG3
AFT_2[HIGH]
SW_AUDIO_R[PC]
DG4
DB5
SW_B/SW_CB
DG5
DB4
DG6
DB3
SW_AUDIO_L[PC]
DG7
DB2
DG8
DG9
STEREO_RESET
DB2
DB3
SW_VIDEO_Y
DB4
SCART_AUDIO_SW
DG9
DB5
DG8
SDA1
DB6
DG7
DB7
SCL1
DG6
DB8
DB9
DVB_POWER_CTL-H
DCLK1
DG5
DVS
DG4
DHS
SD_H
DG3
DEN
DG2
SW_CVBS
SW_VIDEO_Y
P.CON+1.5V
P.CON+3.3V
SW_VIDEO_C
GND
SCALER_RESET
SW_AUDIO_R[PC]
SW_G/SW_Y
SW_AUDIO_L[PC]
SW_R/SW_CR
SW_B/SW_CB
GND
SW2_R/CR
P.CON+1.5V
DCLK1
SW2_G/Y
DHS
DVS
DEN
SW2_B/CB
SW_CVBS
SW_VIDEO_Y
4SI_SCL
4SI_SDA_OUT
4SI_SDA_IN
4SI_CHIP_SE
H-20
H-19
PCBDS0
CEF170
(SCALER PCB)
SCALER SCHEMATIC DIAGRAM
LIGHT CTL/PSU_5VD
AFT
STANDBY LED
REMOCON IN
SCART1_R
GND
SCART1_B
GND
SCART1_G
LCDON
POWER_ON-H
POWER_FAIL
SCART1_Y
GND
GND
S_DET
GND
EXT_MUTE-H
AUDIO_MUTE
DVB_FAN_ON-H
LCD-H/PDP_RLY
AFT_2/DTV_CVBS
AFT_1
SW_YUV1/2
17
16
15
3.3
1.5
3.3
DVDD15
DVDD15
DVDD15
DVDD15
DVDD15
DVDD15
DVDD15
DVDD15
DVDD15
DVDD15
DVDD15
1.5
1.5
1.5
1.5
NC
NC
NC
NC
NC
3.3
3.3
1.5
1.5
1.5
3.3
1.5
3.3
2.1
1.5
1.5
3.3
3.3
SW_AUDIO_L(PC)
SWITCH_VIDEO_C
GND
SWITCH_VIDEO_Y
GND
SWITCH_CVBS
GND
SDA1
SCART_AUDIO_SW
STEREO_RESET
GND
GND
GND
SCL1
GND
SW_AUDIO_R(PC)
GND
GND
DTV_MUTE_L
DVD/AV3_SW
DTUNER_RX
DTUNER_TX
DTUNER_RESET_L
DTUNER_POWER
DTUNER_SD_H
DTUNER_H
20
19
FROM/TO MICON
NC
NC
NC
NC
NC
NC
NC
NC
FROM/TO TUNER/OUT JACK
FROM/TO LVDS
FROM/TO ADC
21
NC
3.3
3.3
0
NC NC
NC
3.3
22
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
FROM/TO AV SWITCH1
NC
FROM/TO REGULATOR
NC
DVDD33
PXD24
PDX25
PDX27
PDX26
VDIN
HDIN/FBIN
DVDD33
DGND
VRPD
VROD
VRMD
VIND
AVDDD1
AVSSD1
AVSSD2
AVDDD2
VRPC
VROC
VRMC
VINC
AVDDC2
AVSSC2
AVDCC1
AVSSC1
DVDD
DVSS
VRPB
VROB
VRMB
VIN1B
AVDDB2
VIN2B
AVSSB2
AVDDB1
AVSSB1
VRPA
VROA
VRMA
VIN1A
AVDDA2
VIN2A
AVSSA2
VIN3A
AVDDA1
AVSSA1
SVSS
DVDD33
DGND
RESET
QOECTL
HDIN2
VDIN2
DVDD33
MPWEL
MPOE
MPCE
MPAH/PCXLKI
DVDDSD
MDQ15/C656IN7
MDQ14/C656IN6
MDQ13/C656IN5
MDQ12/C656IN4
MDQ11/C656IN3
MDQ10/C656IN2
MDQ9/C656IN1
DVDD33
DGND
MDQ8/C656IN0
MDQ7/C656OUT7
MDQ6/C656OUT6
MDQ5/C656OUT5
MDQ4/C656OUT4
MDQ3/C656OUT3
MDQ2/C656OUT2
MDQ1/C656OUT1
DVDDSD
DGND
MPSEL0
XIN
XOUT
MPSEL1
MDQ0_C656OUT0
QE/PXCLK0
QH
QV
QDRVHA/QDE
DVDD33
DGND
QDRVHB
QDRVHC
QDRVHD
QDRVHE
DVDD33
DGND
DVDDSD
QDRVHF
QDRVVA
QDRVVB
DVD33
TEST0
QCLKL
QGL1
LPF1
TEST1
QGL2
QGL3
QGL4
DVDD33
DGND
QGL5
QGL6
QGL7
QBL1
QBL0
DGND
DVDD33
QBL2
QBL3
QBL4
QBL5
QBL5
QBL6
QBL7
QRL0
QRL1
QRL2
DGND
DVDD33
QRL3
QRL4
QRL5
QRL6
QRL7
QCLKR
QGR0
QGR1
DGND
DVDD33
QGR2
QGR3
QGR4
QGR5
QGR6
QGR7
DVDD33
DGND
QBR0
QBR1
QBR2
QBR3
DVDD33
QBR5
QBR6
QBR7
QRR0
DVDDSD
DGND
DVDD33
QRR1
QRR2
QRR3
DGND
DVDD33
QRR4
QRR5
QRR6
QRR7
TSTCLK
QBLCA
QBLCB
QBLCC
QBLCD
DGND
DVDDSD
PXCLK
PXD00
PXD01
PXD02
PXD03
PXD04
PXD05
PXD06
DGND
DVDD33
PXD07
PXD10
PXD11
PXD12
PXD13
DVDDSD
PXD14
PXD15
PXD16
PXD17
PXD20
PXD21
PXD22
56
55
57
106
107
108
214
215
216
163
164
165
PXD23
DGND
DGND
QBR4
QGL0
DGND
MPWEL
DGND
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
0
1.6
1.2
0.7
0.9
3.4
0
3.4
0
1.6
1.1
0.7
1.3
3.4
0
3.4
0
3.4
0
1.6
1.1
0.7
0.5
3.4
2.0
0
3.4
0
1.6
1.1
0.7
0.5
3.4
1.3
0
1.3
3.4
0
0
3.4
0
3.7
3.7
3.3
3.3
3.4
3.3V
3.3V
FROM/TO JACK
(CP4204)
(CP4203)
FROM/TO AV SWITCH2
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0
0
0
0
3.3
0
3.3
3.3
3.3
3.3
3.3
3.3
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0
0
3.3
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0
0
3.3
1.5
3.3
3.3
0
0
0
3.3
0
3.3
0
0
0
0
NC NC NC NC
0
3.3
3.3
3.3
0
0
0
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0
0
0
0
0
0
NC
NC
NC
NC
NC
NC
NC
NC
0
0
0
0
0
0
0
NC
NC
NC
0
0
0
0
0
0
0
0
0
0
NC
NC
NC
NC
0
0
0
0
0
0
NC
NC
NC
NC
NC
NC
0
0
0
NC
NC
NC
3.3
3.3
3.3
18