A
C
E
G
I
B
D
F
H
J
2
1
3
5
7
4
6
KAC-859
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
-16.6V
16.8V
0V
0V
0V
0V
0V
0V
0V
0V
-16.6V
16.8V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0.6V
0V
-1.2V
-44.5V
-44.0V
-45.2V
-16.6V
16.8V
-5.1V,5.7V(MUTE)
0V
0.6V
14.3V
-23.4V
0V
-1.2V
-23.4V
-24.0V
-24.3V
-24.0V
-23.4V
-23.4V
0.6V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
14.3V
0V
0.6V
-23.4V
0V
-1.2V
-23.4V
-24.0V
-24.3V
-24.0V
-23.4V
-1.2V
0V
-23.4V
14.3V
0.6V
-24.3V
25.2V
-45.4V
14.3V
0V
0V
-44.0V
B LINE
B LINE
Bch
Lch
Rch
Lch
Ach
J1
Rch
Rch
Lch
SUBch
S2
E3
E4
E2
IC2
IC2
(1/4)
(3/4)
D205
D201
D203
D207
D208
D204
D202 D206
S4
IC2
(4/4)
IC2
(2/4)
IC4
(3/4)
(4/4)
IC4
(2/4)
IC5
PHASE
INVERTER
HPF
D209
D210
Q201
Q202
MUTE
Q203
Q205
Q207
Q209
Q210
Q208
Q206
Q204
S3
D106
D102
D108
D104
D107
D103
D105
D101
IC1
(2/4)
(4/4)
IC1
IC1
(1/4)
IC1
(3/4)
(1/4)
(2/4)
IC4
S1
INVERTER
IC5
PHASE
HPF
IC4
(1/4)
Q110
Q108
D1
10
Q102
Q104
Q106
MUTE
D109
Q101
Q103
Q109
Q107
Q105
D304
D302
D303
D301
(1/4)
IC3
(2/4)
IC3
S5
LPF
IC3
(3/4)
MUTE
Q307
Q301
Q304
Q303
Q302
IC5
(3/4)
(4/4)
IC5
D1
D2
D3
D4
IC3
(4/4)
D305
ISOLATION
AMPLIFIER
MIXER
SIGNAL
ISOLATION
AMPLIFIER
PHASE
INVERTER
FILTER
INFRASONIC
IC1-3,5
: UPC4574C
IC4
: NJM2058D
Q101,102,201,202,307
: 2SC945(A) (Q,P)
Q103-106,203-206,301,302
: 2SA733(A) (Q,P)
Q107-110,207-210,303,304
: 2SC1845(F,E)
D1-4
: RD8.2JS(B)
D101-110,201-210,301-305
: 1SS133
GND LINE
SIGNAL LINE
WH2
WH3
WH1
2/2
X09-
CN2
2/2
CN3
X09-
2/2
CN1
X09-
AMPLIFIER
ISOLATION
INPUT
SELECTOR
SUB. CH LPF FREQ.
SUB. CH
LEVEL
INPUT
2-STAGE
AMPLIFIER
DIFFERENTIAL
INPUT
SELECTOR
OPERATION
B.CH HPF
B.CH INPUT
LEVEL
A.CH INPUT
LEVEL
A.CH HPF
AMPLIFIER
DIFFERENTIAL
2-STAGE
AMPLIFIER
DIFFERENTIAL
2-STAGE
ONLY
(E) TYPE
10K
1200P
R204
C204
C203
1200P
10K
R203
1K
R201
R202
1K
1
2
3
4
5
6
7
8
BRN
BRA
BLN
BLA
ALN
ALA
ARN
ARA
1
2
3
4
5
6
7
8
NF
A CLAS
-LB
GND
+LB
-HB
+15V
MUTE
1
2
3
4
5
6
7
8
BR-
BR+
BL+
BL-
AR-
AR+
AL+
AL-
6
2
3
1
5
7
12
13
14
10
9
4
8
11
10u35
+
C201
10u35
+
C202
R209
8.2K
C2 1000P
R2 1K
R213 6.8K
R214 6.8K
R205 10K
10P
C205
10K
R207
10K
R208
10P
C206
R206 10K
R212
6.8K
22P
C210
6.8K
R211
22P
C209
6.8K
R217
6.8K
R218
R210
8.2K
C21
1
10P
C212
10P
R215
C213
C214 22P
R216 6.8K
10u35
+
C215
3
4
1
2
R221
82K
R222
82K
82K
R224
R223
82K
100K
R219
100K
R220
10u35
+
C216
AB
A
ST
MONO
1
2
3
R231 6.8K
R233 18K
R234 18K
R232 6.8K
R227 100K
R228 100K
R225 39K
R226 39K
0.22
C217
0.22
C219
R229
5.6K
R230
5.6K
C218
0.22
C220
0.22
5
6
11
4
7
3
2
1
10K(A)
VR2
10K
R236
R238 10K
C222 22P
22u35
+
C223
22u35
+
C224
390
R239
390
R240
10K(A)
VR2
10K
R243
10K
R244
10u35
+
C225
10u35
+
C226
6.8K
R241
6.8K
R242
470P
C227
470P
C228
R245 18K
R246 18K
C233 47P
C234 47P
360
R255
1K
R251
1K
R252
360
R256
1K
R250
1K
R249
100
R253
1000P
C229
1000P
C230
100
R254
R247
7.5K
R248
7.5K
100u10
C231
+
100u10
C232
+
33
R261
33
R262
100P
C237
100P
C238
R257 18K
C235 10P
R258 18K
C236 10P
R259 100
R260 100
R106 10K
C106
10P
10u35
C104
R104
1200P
10K
10u35
+
C102
1200P
C103
+
R103
10K
R108
10K
R107
10K
C101
C105
10P
R105 10K
10P
C1
12
C116
R1
18
6.8K
C1
10
22P
3
2
6.8K
R112
1
R122
82K
6
5
6
7
10u35
+
10P
8.2K
R110
R114 6.8K
R113 6.8K
R1 1K
C1 1000P
5
82K
R123
R124
82K
8
6.8K
14
8.2K
R109
13
C109
22P
12
R111
82K
R1
17
6.8K
C
111
R121
7
100K
R1
19
R116 6.8K
C114 22P
100K
R120
C113 22P
C115
10
R115 6.8K
9
8
10u35
+
R130
R126 39K
C118
0.22
C120
0.22
5.6K
8
10
9
10K
R136
C124
C122 22P
22u35
+
13
R138 10K
12
14
10K(A)
VR1
R133 18K
R131 6.8K
R125 39K
R127 100K
R128 100K
R134 18K
R132 6.8K
5.6K
R129
C117
0.22
C119
0.22
390
R140
390
R139
13
14
12
10K(A)
VR1
+
22u35
C123
360
R156
R146 18K
1000P
6.8K
10u35
+
R142
C126
7.5K
R148
C134 47P
100
R158 18K
C136 10P
R160 100
C138
100P
C130
1000P
C129
R145 18K
470P
C127
470P
10K
R144
C128
R143
10K
1K
R150
R154
R152
R149
1K
R151
6.8K
R141
10u35
+
C125
R153
100
C133 47P
R147
7.5K
100u10
C132
1K
+
R162
33
100u10
C131
1K
+
R161
33
R155
360
R157 18K
C135 10P
100P
C137
R159 100
10K
R305
10u35
C302
1200P
+
10K
R303
C301
10P
C303
R304 1K
R31
1
100K
C307 22P
R308 6.8K
C3 1000P
R3 1K
390
R322
10P
6.8K
14
R306
8.2K
13
22P
C305
12
R307
6.8K
R310
C306
3
R309 6.8K
2
1
+
10u35
C308
6
7
5
VR3
10K(A)
+
C319
10u35
R327 18K
R336
10K
R330
1.2K
R331
100u10
C322
1.2K
+
R335
68
C321
100P
C320 1000P
10u35
+
C335
R329
100
C323 47P
R328
7.5K
R332
330
R333 18K
C324 10P
C326
220P
R334 100
9
10
8
R312 10K
C309 22P
10
R339
5
11
7
6
4
R314 10K
C310 22P
10K
R313
10u35
+
C311
100K
R315
22u25
C4
+
9
8
10
R326 8.2K
2.2K
R325
1u50
+
C317
R316
47K
0.47
C312
3.3K
R319
10K(C)
10K(C)
0.12
C314
R324 4.7K
C318 4700P
1u50
+
C316
+
C315
1u50
5.1K
R320
R321 22K
R323 5.6K
1K
R345
10u35
C331
+
R346
1K
C332
10u35
+
R347
1K
C333
+
10u35
R348
1K
+
C334
10u35
R341
1K
R342
R343
1K
1K
1K
R344
C327
10u35
C328
+
+
C329
+
10u35
10u35
10u35
C330
+
7
8
6
5
4
3
2
1
7
8
4
5
6
1
2
3
7
8
6
5
2
4
3
1
+
C5 22u25
R6 82 2W
R4 82 2W
R7 82 2W
R5 82 2W
1
2
2
1
1
2
3
4
7
8
6
5
7
8
6
5
4
3
2
1
R102 1K
R101 1K
R301 2.2K
R302 2.2K
4
11
Q103-110
SUB - AB
3.3K
R318
1.5K
R317
VR4
11
4
0.01
C10
0.01
C9
0.01
C8
0.01
C7
0.01
C12
0.01
C13
0.01
C14
0.01
C15
12K
R8
1u50
+
C6
220P
C325
220u50
+
C25
10
R47
220u35
C1
1
+
470
R51
R52
470
R53
470
R54
470
R55
470
R56
470
R57
470
R58
470
R59
470
R60
470
S5
200Hz
50Hz
Q301-304
S4
S3
S2
80Hz
OFF
150Hz
150Hz
OFF
S1
80Hz
Q203-210
2.2K
R352
R351
2.2K
R350
2.2K
R349
2.2K
22P
6.8K
0.47
C313
(X08-4080-10) (A/2)
KAC-859 (K,M,E,J)
PRE AMPLIFIER UNIT
A
B
C
(1/2)
2SA1110
2SC2590
DTA124ESA
2SC4137
CAUTION:
For continued safety, replace safety critical components only with manufacturer's recommended
parts (refer to parts list).
indicates safety critical components. For continued protection against risk of fire,
replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakage-current or
resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply
circuit) before the appliance is returned to the customer.
