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SCHEMATIC DIAGRAM-5
MAIN CIRCUIT
:+B SIGNAL LINE
R2262
22K
R2162
C2162
3.9K
0.15
C2261
C2262
C2161
0.1
0.15
0.1
R2161
C2149
R2144
22K
1
1.5K
R2261
3.9K
C2249
R2244
1
1.5K
R2892
R2893
18K
15K
C2605
0.47
C2606
0.12
R2611
56K
C2609
5600P
R2604
R2403
R2303
R2501
33K
39K
39K
47K
R2603
R2404
R2304
R2502
15K
6.8K
6.8K
6.8K
C2264
50V10
C2621
R2639
R2663
33P
1.8K
3.9K
R2642
R2638
68K
68K
1
2
3
4
IC2601
C0ABBB000118
Buffer Amp
8
7
6
5
R2636
10K
R2657
100K
C2633
R2656
+7.5V
220P
4.7K
R2661
R2658
27K
2.2K
R2659
Q2607
56K
B1ABCE000016
C2628
R2655
Buffer Amp
50V1
10K
C2637
50V4.7
Q2609
R2635
B1GDCFGA0018
R2654
C2619
10K
Level Control
10K
0.47
-7.5V
R2633
C2620
R2634
100K
0.1
8.2K
R2660
1.8K
HB LVL
12
13
:-B SIGNAL LINE
:MAIN SIGNAL LINE
R2184
220K
Q2306
B1GFGCAA0001
Muting Switch
R2181
R2186
R2187
220K
2.2K
2.2K
C2610
50V10
R2264
R2164
C2603
33K
33K
50V10
R2178 22K
R2610
1.5K
R2278 22K
R2612
6.8M
R2605 2.2K
C2607
C2175
C2270
R2606
R2608
0.47
0.033
0.033
10K
150K
R2625
R2609
22K
56K
C2608
0.1
C2618
0.068
C2632
100P
R2651
C2635
12K
0.022
R2652
100K
R2640
R2664
0
3.9K
1
2
3
4
IC2602
C0ABBB000118
Buffer Amp
R2662
100K
C2630
50V10
8
7
6
5
R2637
1K
R2643
100K
R2647
C2627
R2630
Q2608
R2629
3.3K
50V10
100K
B1ABEB000002
33K
Level Control
Q2604
R2648
B1ABEB000002
R2631
R2644
Muting Switch
10K
100K
27K
R2649
R2641
C2631
R2645
2.2K
3.9K
50V4.7
56K
Q2605
C2636
R2627
R2632
B1GDCFGA0018
Muting Control
50V4.7
100K
8.2K
R2646
1.8K
HB MUTE
+7.5V
-7.5V
14
15
16
C2163
R2163
50V3.3
1K
FRONTL
C2263
R2263
50V3.3
1K
FRONTR
C2506
0.01
R2615
100K
C2613
0.01
C2611
R2614
R2617
50V4.7
33K
1K
C2612
R2616
C2615
50V4.7
33K
5600P
R2613
3.3K
4
3
2
1
IC2015
C0ABBB000118
Buffer Amp
5
6
7
8
R2506
33K
C2504
R2504
0.068
6.8K
R2305
1K
C2503
0.033
C2502
R2503
50V1
3.3K
C2302
1
C2403
1
Q2302
C2250
R2245
B1GFGCAA0001
50V1
6.8K
R2330
Muting Switch
12K
C2251
R2246
C2253
100P
33K
16V100
C2252
47P
+7.5V
5
6
7
8
IC2013
C0AABB000125
Headphone Amp
R2247
22
4
3
2
1
R2248
C2254
22
0.01
C2255
1000P
C2152
47P
C2151
100P
C2155
1000P
R2148
22
C2150
R2145
R2146
C2153
R2147
50V1
6.8K
33K
16V100
22
+7.5V
-7.5V
17
18
R2622 27K
-7.5V
C2617 50V10
R2619
2.2K
R2624 100K
R2621
Q2601
56K
B1GFGCAA0001
Muting Switch
R2510 27K
C2508 50V4.7
R2511
2.2K
R2509
56K
R2623 100K
R2310 27K
C2170 50V4.7
R2312
2.2K
R2306 100K
R2309
Q2104
56K
B1GFGCAA0001
Muting Switch
R2311
2.2K
R2327 27K
C2311 50V4.7
R2406 100K
R2405
R2254
1K
R2255 100K
R2326
2.2K
56K
Q2200
B1GFGCAA0001
Muting Switch
R2430
12K
R2167 12K
C2168 50V3.3
R2154
2.2K
R2168
22K
R2428
1K
R2155 100K
R2328
1K
Q2102
R2249
22
B1GFGCAA0001
R2251
4.7K
Muting Switch
R2250
R2268 27K
22
C2267 50V4.7
R2152
2.7K
R2267
56K
R2150
R2153
22
10
R2151 4.7K
R2149
22
R2252
2.7K
19
20
21
R2620
1.8K
MUTE SUB
Q2600
B1GDCFGA0018
Muting Control
R2508
1.8K
MUTE C
Q2500
B1GDCFGA0018
Muting Control
R2308
1.8K
MUTE S
Q2103
B1GDCFGA0018
Muting Control
R2331
1.8K
SURR FC1
Q2301
B1GDCFGA0018
Freq.Limiter
Control
R2166
1.2K
MUT FRNT
Q2105
B1GDCFGA0018
Muting Control
R2253
10
HP R
R2266
1.8K
HP MUTE
Q2201
B1GDCFGA0018
Muting Control
+7.5V
-7.5V
SA-HT840EB MAIN CIRCUIT
22
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