![background image](http://html.mh-extra.com/html/sharp/lc-20dv20u/lc-20dv20u_service-manual_373836054.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
CP4204
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
IC4406
NJM4580M
AUDIO_AMP
1
2
3
4
5
6
7
8
CP4401
A2001WV2-9P
1
2
3
4
5
6
7
8
9
C4447
10
16V
KANP
C4459
10
16V
KANP
IC4405
SN74LVC1G3157DCKR
DIGITAL AUDIO SW
1
2
3
456
W909
W896
W897
W876
C4434
22
50V
YK
C4430
22
50V
YK
C4431
2.2
50V
KA
C4433
100
16V
YK
C4432
2.2
50V
KA
C4427
4.7
50V
KA
C4444
33
25V
YK
C4429
220
6.3V
YK
C4422
10
25V
KA
C4443
100P
CH
C4421
0.1
F
C4438
100P
CH
C4439
0.001 B
C4441
0.001 B
C4446
820P
CH
C4436
0.1
F
C4445
820P
CH
C4428
220P
CH
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
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
R4442
10K
R4457
100
R4456
100
R4459
75
1/4W
R4420
4.7K
R4443
10K
R4440
10K
R4438
12K
R4446
47K
R4447
10K
R4437
10K
R4435
1K
R4432
100
R4430
10K
R4431
100
R4441
47K
R4445
47K
R4444
47K
R4439
12K
R4436
10K
R4433
1K
R4428
4.7K
R4427
3.3K
R4429
10K
R4426
1K
R4425
1K
R4452
75
R4424
10K
R4450
10K
R4451
10K
R4458
100
Q4406
KTC3875S_Y_RTK
MUTE SW
Q4405
KTC3875S_Y_RTK
MUTE SW
Q4403
KRC102SRTK
LEVEL SHIFT
Q4404
KRC104SRTK
MUTE SW
Q4408
KRC103SRTK
MUTE SW.
CD4204
2H0U1401
TR701
W5T29X7.5X19
Q4407
KRA101SRTK
MUTE SW.
Q4402
KRA102SRTK
LEVEL SHIFT
CAUTION: DIGITAL TRANSISTOR
CAUTION: DIGITAL TRANSISTOR
EXT_MUTE
REMOCON_IN
STANDBY_LED
SW_YUV_Y
SW_YUV_PB
SW_YUV_PR
AT+5V
DTUNER_H
DVD_Y
DTUNER_SPDIF
DTUNER_H
DVD_C
AT+3.3V
SPIF_134
STANDBY_LED
SW_SPDIF
REMOCON_IN
EXT_MUTE
AFT
SW_SPDIF
AUDIO_MUTE
DTUNER_SPDIF
AFT
AFT_1
SW_YUV_PB
AFT_2
SW_YUV_Y
SW_YUV_PR
AFT_2
AUDIO_MUTE
POWER_ON-H
PSU_ACD/P.FAIL
POWER_ON-H
AFT_1
VS_ON/LCDON
PSU_ACD/P.FAIL
PSU_5VD/DSR/LIGHT_CTL
RLY_ON/LCD-H
VS_ON/LCDON
RLY_ON/LCD-H
POWER_ON-H
STANDBY_LED
AT+5V
AT+3.3V
P.CON+5V
P.CON+9V
PSU_5VD/DSR/LIGHT_CTL
GND
P.CON+5V
P.CON+9V
DVD_C
DVD_Y
DVD_A_OUT_R
R_AUDIO
SPIF_134
DVD_A_OUT_L
L_AUDIO
H-4
H-3
3.3
3.3
3.3
TUNER/OUT JACK SCHEMATIC DIAGRAM
(AV PCB)
LIGHT CTL/PSU_5VD
POWER_FAIL
POWER_ON-H
S_DET
SW_YUV1/2
GND
SCART1_Y
AFT_2/DTV_CVBS
GND
SCART1_R
GND
SCART1_G
SCART1_B
GND
EXT_MUTE-H
AUDIO_MUTE
AFT
STANDBY LED
REMOCON IN
GND
LCDON
DVB_FAN_ON-H
LCD-H/PDP_RLY
AFT_1
NC
NC
NC
NC
NC
NC
3.2
0
3.2
FROM/TO SOUND AMP/HEADPHONE AMP
0
5.8
5.8
5.8
+
-
A_GND
VCC
-
+
5.8
5.8
5.8
3.2
0
2.6
0
5.0
0
-0.2
5.0
5.0
-0.3
0
0
0
0
-0.3
DVD_AUDIO_R
[Y]Y_VIDEO
[U]C_VIDEO
SPIF_134
GND
GND
DVD_AUDIO_L
GND
ZERO
NC
NC
9.0
VCC
A
B1
GND
B2
S
4.9
0
0
0
4.9
4.9
NC
NC
(CP802)
FROM/TO SCALER
(CD703)
FROM/TO AUDIO/VIDEO
FROM/TO AV SWITCH2
FROM/TO AV JACK2
FROM/TO TUNER
FROM/TO POWER
FROM/TO STEREO
PCBD20
CMF090