![background image](http://html.mh-extra.com/html/sharp/lc-20dv20u/lc-20dv20u_service-manual_373836056.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
X901
18.432MHz
100CT01804
IC904
MSP4440G-QA-C13-100
STEREO
1
10
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
9
CP901
A2001WV2-4P
1
2
3
4
C916
22
16V
KANP
C919
22
16V
KANP
L903
10uH 0305
L901
10uH 0305
L904
10uH
0305
W916
W892
W893
W839
W894
W930
W856
W857
W927
C930
22
50V
YK
C933
1000
6.3V
YK
C904
22
16V
V-S
C946
10
50V
YK
C951
10
50V
YK
C927
3.3
50V
KA
C914
10
50V
YK
C918
10
50V
YK
C906
220
10V
YK
C915
10
50V
YK
C929
22
50V
YK
C917
470P CH
C955
56P CH
C949
22P
CH
C941
0.0015
B
C943
470P
CH
C945
220P
CH
C948
22P
CH
C958
0.0022
B
C953
56P CH
C936
0.33
B
C940
0.33
B
C942
0.33
B
C944
0.1
B
C952
470P CH
C950
0.0015 B
C957
5P CH
C956
10P CH
C920
0.0015 B
C934
0.33
B
C962
0.33
B
C963
0.33
B
C954
56P CH
C926
0.1
B
C922
0.1
B
C959
0.0022
B
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
R915
10K
R901
33
R902
33
R903
33
R906
100
R905 100
R913
1K
R914
10K
R916
100
R904
100
Q902
KTC3875S_Y_RTK
BUFFER
Q901
KTC3875S_Y_RTK
BUFFER
D901
MTZJ5.6B
B906
FCM1608KF-102T02
B904
FCM1608KF-102T02
B903
BLM18PG121SN1D
B902
FCM1608CF-600T06
B901
BLM18PG121SN1D
CD901
CU246601
AT+5V
P.CON+5V
I2SSD0_OUTA
GND
I2SWS_OUTA
I2SSCLK_OUTA
I2SSD0_IN
I2SWS_IN
I2SSCLK_IN
P.CON+8V
HDMI_I2SSCK
HDMI_I2SSDO
HDMI_I2SWS
GND
SP_AUDIO_OUT_L
SP_AUDIO_OUT_R
AUDIO_JACK_OUT_R
AUDIO_JACK_OUT_L
SIF
STEREO_RESET
SCL
SDA
DVD_A_OUT_R
DVD_A_OUT_L
SW_AUDIO_L[PC]
SW_AUDIO_R[PC]
SW_AUDIO_L[JACK]
SW_AUDIO_R[JACK]
AV2_A_IN_L
AV2_A_IN_R
H-8
H-7
(AV PCB)
STEREO SCHEMATIC DIAGRAM
FROM/TO TUNER
NC
NC
NC
NC
NC
NC
NC
FROM/TO POWER
0.6
4.9
0
3.8
3.8
3.8
HDMI_I2SSDO
HDMI_I2SWS
HDMI_I2SSCK/MCKL
GND
FROM/TO HDMI MICON2
(CP3602)
NC
NC
NC
NC
4.9
0
0
4.9
4.9
4.9
1.7
2.5
4.9
0
2.4
1.9
0
2.6
1.9
2.4
4.9
4.9
0
2.6
3.8
3.8
0
3.8
3.8
0
3.7
0
0
7.1
8.0
7.1
3.8
NC
65 AVSUP
79 ADR_SEL
80 STANDBYQ
40 CAPL_M
26 VREF2
NC
NC
I2S_DA_IN2
I2S_WS
I2S_DA_OUT
I2S_DA_IN1
ADR_DA
ADR_WS
ADR_CL
I2S_CL
D_CTR_I/O_1
D_CTR_I/O_2
NC
I2C_DA
I2C_CL
DVSUP
DVSUP
DVSUP
DVSS
DVSS
DVSS
RESETQ
NC
NC
NC
AUDIO_CL_OUT
TP
NC
NC
NC
NC
NC
XTAL_OUT
XTAL_IN
TESTEN
ANA_IN-
AVSUP
MONO_IN
NC
NC
NC
NC
NC
NC
VREFTOP
ASG1
AHVSUP
CAPL_A
SC2_OUT_L
SC2_OUT_R
ASG2
AVSS
AVSS
ASG4
AGNDC
NC
NC
AHVSS
AHVSS
NC
NC
NC
NC
VREF1
NC
NC
0
0
3.8
0
0
0
0
3.8
3.8
0
0
0
0
4.8
0
0
0
0
0
4.4
0
0
0
0
0
5.0
5.0
5.0
0.2
0.2
0
0
0
0
0
NC
0.1
0.1
0
NC
DACM_SUB
NC
0
0
0
0
0
0
25
26
NC
SW_A_IN_L
SW_A_IN_R
SIF
AV2_A_IN_R
AV2_A_IN_L
SW2_A_IN_L
SW2_A_IN_R
SPOUT_R
SPOUT_L
SW1_A_IN_L
SW_A_IN_R
I2S_CL3
I2S_WS3
I2S_DA_IN3
(PC/HDMI/DVI)
(AV1/YUV/SIDE)
(DVD)
(AV2)
NC
NC
25 NC
VariOut_R
VariOut_L
FROM/TO AV JACK
FROM/TO TUNER
FROM/TO AV JACK2
5.0
0.6
0
FROM/TO SOUND AMP/HEADPHONE AMP
FROM/TO TUNER/OUT JACK
FROM/TO AV SWITCH2
PCBD20
CMF090