SA-HT870E,EB,EG MAIN CIRCUIT
10K
R1025
75
R1031
4.7K
R1024
22K
R1017
22K
R1009
1
C1007
TV L
TV R
YC H
R
B
G
S C
S Y
VMUTE3(RGB HD)
WIDE1_
DVD A+5V
+12V
MUTE
TVLCH
GND
TVRCH
GND
YC H
R
GND
B
GND
G
GND
COUT
GND
YOUT
RGB H
WIDE1
A+5V
NSW+12V
CN2005
10K
R1026
75
R1030
1K
R1029
1K
R1028
R2969 0
GND
V-IN
V-OUT
RETURN
RETURN
BLK I/O
RED I/O
RETURN
RETURN
NC
GREEN I/O
21PIN
AV JACK
CONT
RETURN
FUNC SW
BLUE I/O
A(A)IN
RETURN
A-COM
A(A)OUT
A(B)IN
A(B)OUT
JK1001
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
470
R1027
B0ACCK000005
D1001
75
R1023
J0JBC0000015
L1023
J0JBC0000015
L1022
75
R1022
J0JBC0000015
L1021
75
R1021
J0JBC0000015
L1020
75
R1020
IN1
VCC
OUT
SW
GND
IN2
Video Buffer
0.1
C1019
C1AB00001731
1
2
6
5
4
3
6.3V220
C1017
6.3V220
C1016
6.3V220
C1015
6.3V220
C1014
6.3V220
C1013
0.01
C1018
0.1
C1012
UNR211H00L
Switch
Inverter
Q1007
UNR221200L
Switch
Q1006
4.7K
R1018
22K
R1019
XN0460100L
2SD0601AHL
Switch
Q1005
18K
R1015
UNR221200L
Inverter
Q1004
22K
R1016
0.01
C1004
1K
R1003
1
C1009
1
C1008
10V22
C1010
0.1
C1006
0.1
C1005
0.1
C1011
Video selector IC
16V100
C1001
J0JBC0000015
L1002
B1AAKD000009
Regulator
Q1010
B0BC01200019
D1002
50V2.2
C1020
100
R1041
10K
R1040
10K
R1042
2SB0709AHL
Amplifier
Q1001
1K
R1004
CN1001
AGND
LIN(TV)
AGND
RIN(TV)
AGND
YCH
R
VGND
B
VGND
G
VGND
COUT
VGND
YOUT
RGBH
WIDE1
A+5V
NSW+12V
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CRSAG
CROUT
GND2
CBSAG
CBOUT
GND2
CYSAG
CYOUT
GND2
YSAG
YOUT
GND2
VSAG
YOUT
GND2
COUT
VCC
GND2
CRIN
MUTE2
CBIN
CLP
CYIN
NC
GND1
NC
GND1
BIAS
YIN
YC-MIX
VIN
MUTE1
CIN
VCC1
C9ZB00000432
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
N
UNIT
SB-WA878EG/EB-S
SUBWOOFER
ACTIVE
TO
220
R2032
B0JCPD000025
D2011
B0JCPD000025
D2009
EPM
C2830 0.1
50V47
C2082
4700
25V
C2080
1
C2062
16V10
C2817
G0A100G00005
L2014
B0BC7R500001
D2010
6.3V820P
C2061
C2821 1
1K
R2813
HP R
HP L
RMT
VREF+
BLUE LED
JOG A
JOG B
KEY2
FL2
SW5V
FL1
FLD DA
FLD CK
FLD CS
FLD RST
-VP
KEY1
STBY LED
SYNC
PCONT
SUBWOOFER
CENTER
LSURR
RSURR
FRONTL
FRONTR
MUTE H
SYS6V
FL2
FL1
SUB+B
DC DET
0.1
C2171
K4CZ01000027
E2000
0.1
C2077
G0A100G00005
L2017
G0A100G00005
L2018
CASE GND
SUBAC2
FL2
SUBAC1
FL1
SYNC
PCONT
GUARD GND
SUBWOOFER
GUARD GND
CENTER
SURRL
GUARD GND
SURRR
FRONTL
OUTPUT GND
OUTPUT GND
SUB+B
FRONTR
DGND
MUTE H
SYS6V
DVDAC1
DCDET
DVDAC2
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
JK2000
FL2
SW5V
FL1
FLD DA
FLD CK
FLD CS
FLGND
FLD RST
-VP
GND1
KEY 1
STBY LED
DISC1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
CN2009
CN2008
HP R
HPGND
HP L
RMT
GND1
VREF+
BLUE LED
JOG A
JOG B
KEY2
10
9
8
7
6
5
4
3
2
1
B0ECKM000016
D2024
B0ECKM000016
D2034
50V220
C2081
4.7
R2853
12K
R2852
12K
R2920
B0BC01000014
D2029
100
R2851
16V100
C2087
0.01
C2088
2SD21370PA
Q2023
8.2
R2850
16V10
C2095
B0ECKM000016
D2027
SUB B
R2859 4.7K
R2858 39K
R2857 15K
DVD AC
B1GBCFJA0015
Q2025
50V4.7
C2089
T+9V
B0ADCJ000020
D2039
B0ADCJ000020
D2032
B0ACCK000005
D2033
DCDET
4.7
R2849
+12V
C+9V
1.8K
R2848
B0BC7R500001
D2026
25V100
C2085
470
R2847
0.01
C2086
2SD21370PA
Q2022
16V100
C2083
B0BC5R600003
D2025
820
R2846
0
R2981
150
R2845
0.01
C2084
B1AAKD000009
Q2021
DVD D+5V
Regulator
Regulator
Power Supply
Regulator
Regulator
Regulator
Regulator
Regulator
DC Detect Switch
Regulator
Regulator
Regulator
Regulator
Stabilizer
DC-DC Converter
DC-DC Converter
SW5V
B0FBAM000010
D2023
2A
FP2000
C2075 50V100
C2074 63V100
1000P
25V
C2076
B0EAKM000117
D2020
B0EAKM000117
D2019
25V1000P
C2073
B0EAKM000117
D2018
B0EAKM000117
D2017
50V100
C2072
B0EAKM000117
D2016
B0EAKM000117
D2015
63V100
C2071
4.7
R2835
16V100
C2070
2.7K
R2834
0.01
C2069
B1ADCF000001
Q2016
R2833 2.7K
C2068 10V33
B1BCCD000016
Q2017
560
R2837
2.7K
R2836
+7.5V
-7.5V
B0BC02900004
D2014
150
R2831
0.01
C2067
4.7K
R2832
50V100
C2066
KTA12710YTA
Q2015
-VP
R2830 2.7
R2829 2.7
R2828 2.7
R2827 2.7
1.2K
R2826
B1GDCFGA0014
Q2014
10K
R2825
0.01
C2057
B0BC9R000008
D2013
25V33
C2056
820
R2824
B1ABCF000131
Q2013
B1BCCG0000021
Q2012
B0ACCK000005
D2012
G0A100G00005
L2013
M+9V
B1ADCF000001
Q2011
DVD AC
R2823 1
R2822 1
R2821 1
R2820 1
R2819 1
R2815 330
10V47
C2063
D+1.2V
1
2
VIN
C0DBEFG00003
BIAS
6
VOUT
5
VREF
4
3
R2816 3.9K
C2060 10V1
G0A101G00022
L2019
B0ACCK000005
D2040
DVD PCONT
1K
R2899
1K
R2900
C2058 1
R2916 10K
R2818 2.7K
C2059 25V220
C0DBAZG00033
VSOFT
DADJ
COM
VOUT
VIN
5
4
3
2
1
R2917 10K
C2055 1
R2896 1K
C2054 25V220
C0DBAZG00033
G0A101G00022
L2012
1
C2053
4.7K
R2860
560
R2898
C2052 6.3V820P
C2816 16V10
C2051 10V1
C2050 6.3V47
R2918 470
C2049 10V1
C2048 6.3V47
VSOFT
DADJ
COM
VOUT
VIN
5
4
3
2
1
B0BC7R500001
D2008
G0A100G00005
L2011
DVD A+5V
C0CBADG00023
3
2
1
C0CBADG00023
1
2
3
MAIN CIRCUIT
: +B SIGNAL LINE
: -B SIGNAL LINE
: MAIN SIGNAL LINE
SCHEMATIC DIAGRAM-6
B
SCART CIRCUIT
D
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
: DVD(VIDEO) SIGNAL LINE
FAN DRIVE
FAN motor drive
B1GBCFJJ0039
Q2031
FAN DRIVE