Panasonic SC-HT870 Service Manual page 249

SCHEMATIC DIAGRAM-6
MAIN CIRCUIT
IC2004
C0CBADG00023
Regulator
3 2 1
DVD D+5V
DVD A+5V
M+9V
DVD AC
D+1.2V
1 2 3
VIN BIAS VOUT
IC2005
C0DBEFG00003
Regulator
VREF
6 5 4
R2813
1K
R2815 330
-7.5V
+7.5V
Q2015
R2836
KTA12710YTA
2.7K
Regulator
-VP
C2067
R2831
0.01
150
C2066 D2014
50V100 B0BC02900004
C+9V
R2981
0
+12V
Q2021
R2846
B1AAKD000009
820
SW5V Regulator
C2084
R2845
0.01
150
C2083 D2025
16V100 B0BC5R600003
SUB B
T+9V
DCDET
DVD AC
: +B SIGNAL LINE
IC2000
C0CBADG00023
Regulator
C2053
3 2 1 1
R2898 R2860
560 4.7K
L2011
G0A100G00005
L2012
G0A101G00022
D2008 D2009
B0BC7R500001 B0JCPD000025
L2013
G0A100G00005
Q2011 D2012
B0ACCK000005
B1ADCF000001
Power Supply
C2063
Q2013
10V47 R2819 1
B1ABCF000131
Regulator
R2820 1
R2821 1
R2822 1
R2823 1
Q2012
B1BCCG0000021
Regulator
Q2017
B1BCCD000016 R2835
4.7
Regulator
C2069 R2834
R2837
0.01 2.7K
560
D2015
B0EAKM000117
R2832
C2070
4.7K
16V100
Q2016
C2071
B1ADCF000001
63V100
Regulator
Q2022
2SD21370PA R2849
Regulator 4.7
C2086 R2848
R2847
0.01 1.8K
470
C2085 D2026
25V100 B0BC7R500001
D2027
B0ECKM000016
R2857 15K
R2858 39K
R2850
8.2
C2095
16V10
C2089
50V4.7
N
Q2025
B1GBCFJA0015
DC Detect Switch
R2859 4.7K
: -B SIGNAL LINE : MAIN SIGNAL LINE
IC2002 IC2001
C0DBAZG00033 C0DBAZG00033
DC-DC Converter DC-DC Converter
1 2 3 4 5 1 2
R2899 R2900
1K 1K
D2011
B0JCPD000025
C2062
1
R2824
C2056 D2013
820
25V33 B0BC9R000008
Q2014
R2826
B1GDCFGA0014
1.2K
Stabilizer
C2057 R2825
0.01 10K
R2827 2.7
R2828 2.7
R2829 2.7
R2830 2.7
C2074 63V100
C2075 50V100
D2016 D2017 D2018 D2019
B0EAKM000117 B0EAKM000117 B0EAKM000117 B0EAKM000117
C2072 C2073
50V100 25V1000P
D2023
B0FBAM000010
C2082
50V47
Q2023
2SD21370PA
R2853 D2034
Regulator 4.7 B0ECKM000016
C2088 R2920 R2852 C2081
0.01 12K 12K 50V220
R2851
C2087 D2029
100
16V100 B0BC01000014
: DVD(VIDEO) SIGNAL LINE
3 4 5
L2019
G0A101G00022
C2060 10V1
R2816 3.9K
C2061
6.3V820P
L2014
G0A100G00005
C2817 D2010
16V10 B0BC7R500001
FP2000
C2076
DC DET
2A
25V
1000P
SYS6V
D2020
MUTE H
B0EAKM000117
FRONTR
SUB+B
FRONTL
RSURR
LSURR
CENTER
C2080
D2024
25V
B0ECKM000016
4700
SUBWOOFER
L2018
G0A100G00005
PCONT
L2017 C2077
G0A100G00005 0.1
SYNC
FL1
FL2
+12V
DVD A+5V
WIDE1_
VMUTE3(RGB HD)
S Y
S C
G
B
R
YC H
E2000
C2171 K4CZ01000027
0.1 TV R
TV L
Q2031
B1GBCFJJ0039
FAN motor drive
JK2000
1 DVDAC
2 DCDET
3 DVDAC
4 SYS6V
5 MUTE H
6 DGND
7 FRONT
8 SUB+B
9 OUTPU
10 OUTPU
11 FRONT
12 SURRR
13 GUARD
14 SURRL
15 CENTE
16 GUARD
17 SUBWO
18 GUARD
PCONT
19
FAN DR
20
21 SYNC
22 FL1
23 SUBAC
24 FL2
25 SUBAC
C2830 0.1
26 CASE G
CN2005
1 NSW+1
2 A+5V
3 WIDE1
4 RGB H
5 YOUT
6 GND
7 COUT
8 GND
9 G
10 GND
11 B
12 GND
13 R
14 YC H
15 GND
16 TVRCH
17 GND
18 TVLCH
19 MUTE
56