Panasonic SA-HT720P Service Manual page 49

SCHEMATIC DIAGRAM-5
MAIN CIRCUIT 3 : +B SIGNAL LINE
R2620 R2308 R2166
1.8K 1.8K 1.8K
Q2600 Q2103 Q2105
B1GDCFGA0014 B1GDCFGA0014 B1GDCFGA0014
Muting Control Muting Control Muting Control
R2621 R2309 R2168
56K 56K 56K
R2622 C2617 R2310 C2170 R2167 C2168
27K 50V4.7 27K 50V4.7 27K 50V4.7
R2973
0
R2972
0
R2812
2.2K
C2036
50V22
L2010 R2807
22u 10K
17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Q2004
B1GBCFJN0021
IC2006
Switch
C9ZB00000431
Video Selector IC
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
C2047 C2046 C2038
6.3V330 6.3V330 10V220
R2886 R2887 R2888 R2889 R2890
75 75 75 75 75
R2891
C2136
75
220P
C2808 C2807 C2806 C2805 C2804 C2803 R2127
100P 100P 100P 100P 100P 100P 100K
R2128
1K
: -B SIGNAL LINE : DVD(VIDEO) SIGNAL LINE
R2266 R2897
1.8K 1K
STBY LED
Q2201 Q2029
B1GDCFGA0014 B1GBCFJN0021
Muting Control LED Drive
DISC3
(LINE SW)
R2267
56K
MRSLED
DISC5
DISC4
DISC3
R2268 C2267 DISC2
27K 50V4.7
DISC1
FLD RST
FLD CS
FLD CK
R2971
FLD DA
0
KEY2
KEY1
DISC SENS
OUT IN
X2000
H2B100500004
10MHz
GND
WIDE1
D2000 L2000
B0ACCE000003 3.3u
C2008
0.1
R2082
R2083 D2002
47K
680 B0ACCE000003
D2001 C2009
C2007
B0ACCE000003 C2006 50V2.2 6.3V
VREF+ 0.1
100
C2003 C2004 C2005
Q2000
D2003
10V22 0.01 10V1000P
B0ACCK000005 B1GBCFLL0028
Reset Switch
R2878 1
R2879 1
R2880 1
R2881 1
R2882 1
C2236 R2130 R2230 R2131 R2231 R2133 R2233
R2883 1
220P 10K 10K 10K 10K 10K 10K
R2884 1
R2885 1
C2801 100P
R2227
R2129 R2229 R2132 R2232 R2134 R2234 C2802 100P
100K
10K 10K 10K 10K 10K 10K C2137 0.1
C2237 0.1
C2138 C2238 C2139 C2239 C2141 C2241
C2140 680P
220P 220P 100P 100P 100P 100P
C2240 680P
R2228
1K
AV JACK
JK2001
K2YZ12000010
R2058 56K
R2056 47K
R2057 47K
C2000
0.1
80 79 78 77 76 75 74 73 72 71
R2080
10K
R2059 220
81 MRSLED
82 DISC5 LED
83 DISC4 LED
84 DISC3 LED
85 DISC2 LED
86 DISC1 LED
R2060 100
87 FLD RST
R2061 220
88 FLD CS
R2062 220
89 FLD CK
R2063 220
90 FLD DA
R2064 100
91 KEY2
92 SPEAMA IN
R2065 10K
93 DES3
R2066 10K
94 DES2
R2067 10K
95 DES1
R2068 10K
96 AVSS
R2072 100
97 KEY1
98 VREF
99 AVCC
R2073
220
DISC
100
SENSE
R2074 R2075
39K 2.7K
1 2 3 4 5 6 7 8 9 10
C2001
0.1
R2076 100K
R2077 4.7K
R2084 22K
R2513 R2514
C2173 R2176 C2827
27K 10K
1 47K 0.01
R2323
C2268 R2275 C2511
100K
1 47K 9P
R2912 C2824 R2903
2.2K 50V4.7 27K 8 9 10 11 12 13
-VCC
R2905
56K
Q2300
B1ABEB000001
Muting Switch
Q2301
+VCC
B1GDCFGA0014
Muting Control 7 6 5 4 3 2
C2305 C2134
18P 100P
R2909 C2174 R2174
1.8K 0.022 47K
C2269 R2273 R2316
R2315
0.022 47K 27K
22K R2319
22K
R2318 C2826 C2307
47K 0.01 0.082
49
70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
P02 50
VOL CK 49
VOL DATA 48
MUTE L 47
YC H 46
(RGB H)VMUTE3 45
DVD MUTE 44
/HP MUTE 43
MUTESUB 42
IC2018 EPM 41
C2CBHG000137
MUTE C 40
System Control
MUTE FRONT 39
WIDE1 38
DVD CLK 37
DVD STAT 36
DVD CMD 35
MUTE S 34
(VMUTE1) 33
VMUTE2 32
(TUN CE) 31
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
R2020 22K
R2079
22K
R2021 47K
R2022 47K
R2023 10K
R2861 10K
R2512 C2512 R2516
C2829
10K 47 10K
0.1
C2509
330P
IC2021
C0ABCB000052
QUAD OP-Amp
14 8 7 6 5 4 3 2 1
Z0 Z ZI Y0 Y1
IC2022
C0JBAR000292
Signal Select
C B A X0 X1 X Y
1 9 10 11 12 13 14 15 16
C2304
22P
R2914 C2828
47K1 0.1
R2314 C2306
22K 47
R2317
R2322
10K
33K
SA-HT720P / SA-HT720PC
R2037 1K
VOL CK
R2036 1K
VOL DA
MUTE L
R2035 220
YC H
R2034 220
V MUTE3
R2033 220
DVD MUTE
MUTE HP
SUBMUTE
EPM
MUTE C
MUTE F
R2031 220
WIDE1
R2030 220
DVD CLK
R2029 220
DVD STAT
R2028 220
DVD CMD
MUTE S
R2027 220
CLK
R2026 220
VMUTE2
R2025 220
TXD
R2032
220
R2024
47K
-7.5V
+7.5V
EXT R
FR OUT
FL OUT
R2913
470
D2101
B0BC5R000009
EXT L
SSS SUR
(PARTY)DSP CLK