Panasonic SC-HT870 Service Manual page 166

SCHEMATIC DIAGRAM-4
MAIN CIRCUIT : +B SIGNAL LINE
TV L
61 INA1
TV R
62 INA2
VCR L
63 INB1
VCR R
64 INB2
AUX L
65 INC1
AUX R
66 INC2
TUN L
67 IND1
TUN R
68 IND2
DVD MIXL
69 INE1
DVD MIXR
70 INE2
R2111 R2211
10K 10K 71
72 EXM1
C2120 1
EXT L
73 EXM2
C2218 1
EXT R
74
R2116 100K
75 INFLA
R2216 100K
76 INFRA
DVDCNT
77 INCA
DVDSL
78 INLSA
DVDSR
79 INRSA
SUBW
80 INSUBA
R2172
0
SEL FL
SEL FR
R2271
0
R2112 C2121 C2127
10K 180P 50V4.7
DVDFL
R2169
7.5K
C2123 R2114 R2115
50V10 10K 27K
R2113
C2124 C2125
10K
100P 33P
C2122
470P
+7.5V
C2126
0.01
5 6 7 8
IC2010
C0ABBB000118
Buffer Amp
4 3 2 1
-7.5V
C2225 C2227
C2226 33P 50V4.7
0.01
C2223 R2214
50V10 10K
R2212 C2224
10K 100P
DVDFR
R2213 R2215
R2269 C2222
10K 27K
7.5K 470P
C2221
180P
: -B SIGNAL LINE : MAIN SIGNAL LINE : FM/AM SIGNAL LINE
C2819 16V47
R2163
1K
C2818 16V47
C2810 220P
C2163
C2809 220P 50V
3.3
R2265 R2165
C2811 0.01
6.8K 6.8K
C2812 0.01
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
FW4 40
OUTFL 39
FOUT3 38
FW3 37
OUTFR 36
MIX IN 35
AGCR 34
AGCC 33
GAOUT 32
IC2011 FW2 31
C1BB00000845
FPIT2 30
ASP IC
FW1 29
FOUT1 28
OUTC 27
OUTCN 26
OUTLS 25
OUTLSN 24
OUTRS 23
OUTRSN 22
OUTSUB 21
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
R2603
20K
C2159 470P C2301 470P
R2159 47K R2301 3.3K
C2259 470P C2402 470P
R2259 47K R2401 3.3K
C2169 470P C2601 1000P
R2170 3.3K R2602 47K
R2263
1K
C2263
50V
3.3
R2506
27K
R2162 6.8K
C2613 R2614
0.01 1K
C2161 0.1 C2162 0.033
C2611
C2149 10V1 R2144 1.2K 50V4.7
R2261 6.8K
C2261 0.1 C2262 0.033
C2249 10V1 R2244 1.2K
R2406
100K
R2892 0 R2893 27K
C2605 0.47 R2610 2.7K
C2606 C2607
0.18 0.22 C2618 0.12
R2625 5.6K R2608 180K R2609 68K
R2611 68K
C2609 8200P
R2613
C2608 0.082
3.3K
C2610 50V10
R2501 33K R2502 4.7K C2502 R2503
50V10 3.3K
C2250
C2302 R2305 50V1
R2303 39K R2304 6.8K
10V1 1K
C2403 R2405
R2403 39K R2404 6.8K
1 1K
R2605 R2612 C2603
R2606 C2264 R2178
3.3K 8.2K 50V10
10K 50V10 27K
R2264 R2164
R2278
20K
20K 27K
R2604
27K
(DS2:47K)
C2270 C2175
0.22 0.22
C2150
50V1
R2320
10K
R2321
22K R2218
22K
R2875 C2800
27K 50V4.7
R2876
56K
Q2027
B1GDCFGA0014
Muting Control
R2877
1.8K C2228
50V10
R2505
C2503 C2506
1K
0.033 0.01
R2508
C2504 R2504
C2505 1.8K
0.068 12K
50V1
Q2500
R2624
5 6 7 8
B1GDCFGA0014 100K
Muting Control
IC2015
C0ABBB000118
Buffer Amp
R2509
56K
4 3 2 1
C2615
5600P
R2511
2.2K
R2615
100K
C2612 R2616 R2617 C2616 R2618
50V4.7 20K 22K 16V10 1K
R2510 C2508
27K 50V4.7
R2311 R2306
2.2K 100K
R2255
100K
Q2104
B1GFGCAA0001
Muting Switch
R2312
2.2K
R2245 R2246 C2253 R2247 R2249
5.6K 33K 16V100 22 22
C2251 C2252 R2248 R2250 R2251
100P 47P 22 22 4.7K
C2154
0.01
C2255
1000P
5 6 7 8
IC2013
C0AABB000125
Headphone Amp
R2148 R2150
4 3 2 1 22 22
C2151 C2152 C2153 R2147 R2149
100P 47P 16V100 22 22
C2254
0.01
R2145 R2146 C2155 R2151 R2153
1000P 4.7K 0
5.6K 33K
R2219 R2226 C2229 C2230 R2220
12K 0.15 12K
100K 3300P R2222
C2233
22K 0.01
C2231 C2232
47P 100P
R2225
2.2K
8 9 10 11
-VCC
Q2101
B1GFGCAA0001
Muting Switch
+VCC
R2125
2.2K 7 6 5 4
R2119 C2130 R2120
12K 0.15 12K
C2131 C2132
47P 100P
R2126 C2129
C2128 R2118
100K 6800P
50V1 22K
R2122
22K
C2133
0.01
SA-HT870E,EB,EG MAIN CIRCUIT
R2619
2.2K
Q2601
B1GFGCAA0001
Muting Switch
R2623
100K
C2404 R2407
50V0.47 100
RSURR
LSURR
C2303 R2307
50V0.47 100
R2254
2.2K
Q2200
B1GFGCAA0001
Muting Switch
R2154
2.2K
R2155
100K
R2253
0
HP R
R2252
2.7K
Q2102
B1GFGCAA0001
Muting Switch
R2152
2.7K
R2221
1.2K
R2223 R2224
10K 10K
C2234 C2235
100P 47P
12 13 14
IC2012
C0ABCB000040
Buffer Amp
3 2 1
C2134 C2135
100P 47P
R2123 R2124
10K 10K
R2121
1.2K