Kenwood KAC-859 User manual

POWER AMPLIFIER
KAC-859
SERVICE MANUAL
© 2000-5 PRINTED IN KOREA
B51-7626-00 (K) 3547
SUB
SUB
OUTPUT
POWER IN
GND
BATT
P.CON
FUSE(25Ax2)
BRIDGED
RIGHT
LEFT
SPEAKER
SPEAKERL
EVELINPUT
RIGHT
LEFT
SPEAKER LEVEL INPUT
25 25
SELECTOR
INPUT
INPUT SELECTOR
LINE IN
GND
B.chH
PF
A.chH
PF
FREQUENCY(Hz)
SUB.CH LPF
SENSITIVITY(V)
SUB.CH INPUT
MONO(Lch)
STEREO
OPERATION
A
B
A
B
A
B
RL
5/4/3 CHANNEL
POWER AMPLIFIER
BSUBA
A
L
R
B SUB
0.3
0.2
(MAX)
0.5
1
2
3
4
(MIN) 5
SENSITIVITY(V)
B.CH INPUT
0.3
0.2
(MAX)
0.5
1
2
3
4
(MIN) 5
SENSITIVITY(V)
A.CH INPUT
0.3
0.2
(MAX)
0.5
1
2
3
4
(MIN) 5
170
200
150
100
80
70
50
BAA
OFF
150Hz
80HzOFF
150Hz
80Hz
SCREW TERMINAL
BOARD
(E70-0828-05)
(E type only)
(N99-1587-05)
SCREW SET
(W01-1515-05)
TERMINAL COVER SET
(W01-1530-05)
LEAD TERMINAL SET
DRESSING PANEL
(A21-4015-02)
HEAT SINK
(F01-1629-01)
SCREW TERMINAL
BOARD
(E70-0829-05)
SCREW TERMINAL
BOARD
(E70-0821-05)
FUSE
(E52-0014-05)
PIN JACK
(E63-0849-05)
(J type only)
DC CORD ASSY
(E30-4341-05)
40%

KAC-859
2
BLOCK DIAGRAM
-1
11.8V
-1
AB/A
ST/MONO
LEVELLEVEL
-1
50Hz-200Hz
(18dB/oct)
(12dB/oct)
(18dB/oct)
15Hz
LEVEL
120mV 21.9V
SP-P-CON
+LB
-LB
+HB
-HB
320mV
0
10
20
30
40
50
-10
MONO AMP
4ch AMP
ISOLATION
& FILTER POWER
dB
INPUT
LEVEL
VOL.
IC1
L
R
SP
SP
HPF
HPF
IC4 (1/4)
IC4 (2/4)
S1-1
S1-2
R
L
(4
40W
)
80,150,OFF
(1/4)
IC5 MUTE Q101,102
SP
R
L
SP
IC5
(2/4)
S2-2
IC4 (4/4)
HPF
IC2
IC4 (3/4)
HPF
80,150,OFF
S2-1
R
40W
MUTE Q201,202
(4 )
L
S4
S3
200mV
R
L(2/4)
(1/4)
IC3 IC3
(3/4)
IC5
(4/4)
IC5
IC3 (3/4)
LPF
IC3 (4/4)
INFRA
MUTE
120W
(4 )
SUB
A
B B
A
SUB
FILTER
CONVERTER
DC/DC BATT
P-CON
T1,T2
Q1-6
Q307
S5
SUB/AB
5 CH AMP. BLOCK DIAGRAM
[ LEVEL DIAGRAM ]
KAC-859

Q14 4.7k
R16
to P-CON terminal
from SP-P-CON
D8
R44 100k
10u 35
3.3k
Q13
A
Q2
power control
D11
7.5v
KAC-859
3
CIRCUIT DESCRIPTION
When the SP output from the head unit is con-
nected to SP IN, the power can be switched
ON/OFF based on the DC voltage of the SP out-
put.
However, As certain head unit models output DC
permanently or generate a click during switching
OFF, it is required to provide the capability of pre-
vious P-CON switching.
A circuit which can perform the switching without
using a switch is described below.
This circuit performs switching by inhibiting the
operation of the S-P-CON circuit when a voltage
is applied to the P-CON pin.
Circuit operation description When the head unit
is connected to SP-INN, the DC component in the
SP output turns Q2 ON through D8 and R16.
When a voltage is applied to the P-CON pin under
this condition, Q13 is turned ON via R44, positive
feedback is applied by combination of Q13 and
Q14, Q13 and Q14 are held at ON, so the voltage
at point (A) is almost 0V and the SP-P-CON cir-
cuit is not activated.
This circuit holds the ON status while the DC volt-
age from SP is present.
Therefore, in this condition, the P-CON circuit
continues functioning.
To cancel the functioning, the voltage at the SP-IN
pin should go 0V.
SP P-CON Switching Circuit

KAC-859
4
ADJUSTMENT
ADJUSTMENT
No ITEM INPUT SETTINGS OUTPUT SETTINGS
TUNER (RECEIVER)
SETTINGS
ALIGNMENT
POINTS ALIGN FOR FIG.
Connect a cassette receiver or other receiver.
1
IDLE CURRENT
Connect a DC voltmeter to
CN7/CN8 and J4(SP.OUT,
L+/R-) in X09-5330-10 UNIT
Volume : 0
(A)
VR101(Lch)
VR102(Rch)
(B)
VR201(Lch)
VR202(Rch)
After sufficient aging
adjust to 2.0mV (a)
2
IDLE CURRENT
Connect a DC voltmeter to
CN7 in X08-4080-10 UNIT Volume : 0 (SUB)
VR401
After sufficient aging
adjust to 2.0mV (a)
BATT.P.CON. GND
(X09-5330-10)
(X08-4080-10)
SPEAKER
OUTPUT SPEAKER
LEVEL
INPUT
FUSE
DC VOLTMETERS
2mV (a)2mV
(a)2mV
(a)2mV
(a)2mV
(a)2mV
L
L
R
R
VR102
(A-Rch)
VR202
(B-Rch)
VR101
(A-Lch)
VR401
(IDLE ADJ.)
VR201
(B-Lch)
A-Rch
A-Lch B-LchB-Rch
CN7
CN7
CN8
B ch
A ch

ACEG IBDFHJ
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view)
56
17
14 8
17
14 8
1
16
1
12 5
6
1
22
5
6
1
2
3
4
5
6
7
14 8
17
14 8
18
16 9
17
14 8
W6
VR1
VR2
VR3
VR4
R139
R140
R125
R105
R106
R101
A
A B
A B
SUB
R102
R2
R205
R206
R325
R44
R201
R202
R301
R302
R128
R142
R156 R158
R154
R152
R162
R150
R145 R149 R247
R245
R255 R257 R256 R258
R253 R254
R252
R262
R250
R251
R261
R249 R246
R248
R259
R341
R343
R345
R347
R346 R348
R344
R342
R238
R260
R349
R352
R241 R243 R242 R244
R161
R151
R153
R157
R155
R141 R143
R147
R334
R333
R332
R331
R329
R335
R327
R328
R326
R330 R8
R40
R11
R12
R29
R34
R32 R39
R21
R22 R15 R35
R27 R26
R18
R19
R20
R17
R16
R25
R410
R411
R404
R407
R401
R405
R406
R417
R419 R418
R416
R36
R37
R13
R42
R41
R14
R23
R43 R24
K1
IDLE SUB
IDEL ADJ.
R6
R47
R4
R5
R7
R146
R148
R336
R339
R228
C218
C118
C136
C130
C127
C133
C129
C227
C237
C330 C327 C328 C329
C333
C332
C331
C225
C233
C135
C235 C236
C230
C229
C234
C228
C226
C125 C137
C134
C128
C324
C321
C323
C320
C325
C326
C335
C216
C4
C5
C6
C24 C17
C21
C26
C403
C19
C16
C138
C126
C124 C123
C223
C115
C116
C315
C316
C319
C104
C2
C224
R132 R126
R131
R127
R129
R133
R134
R130
R136 R138
R312 R313
R160
R159
R350
R351
R144
R314 R315
R238
R236 R230 R234 R233
R229 C217
C219
C220 C120
C119
C117
C122
C309
C12 C132
C322
C11
C25
C131
C231
C232
C7
C310
C222
C113
C13
C8
C215
C9
C14
C114
C211
C209
C205
C1
C112
C110
C106
C111 C109
C105
C101
C102
C201
C202
C103
C204
C302
C3
C15
C10
C318
C317
C314
C305
C306
C313
C312
C307
C308
C303
C301
C206
C210 C212
C214
C27
C203
C311
R227 R231
R232
R239
R240
R107
R109 R111
R117
R113
R115
R119
R120
R116
R114
R118
R112
R110
R104
R108
R1
R207
R203
R209
R211
R217 R213
R215 C213
R219
R221
R223
R224
R220
R45
R216
R214 R218
R212
R210
R204
R208
R322
R323
R324
R307
R311
R308
R309
R310 R319
R317
R316
R318
R320
R321
R305
R303
R304
R306
R3
C23
C22
C18
C20
C406
C405
C404
C402
C401
R30
R38
R413
R403
R402
R415
R414 R412
R409
R408
R46
VR401
R31
R28
R33
R222
R124
R122 R121
R123
R225
R226
R103
W14
W46
W47
W60
W76
W94
W154
W117
W131 W143
W77
W57
W56
W73
W74
W59
W69
W64
W93 W78
W91
W81
W103
W104
W105
W106
W92
W79
W45
W98
W132
W133
W134
W135
W150
W151
W158
W159
W96
W97
W56
W113
W80
W90
W89 W95
W29
W70
W169
W122
W123
W138
W43
W136
W144
TH1
W128
W5
W18
W16
W35
W44
W19W20
W15
W13
W11
W9
W3
W12
W10
W4
W1
W7
W8
W23
W30
W36
W72
W82 W83
W84
W86
W61
W85
W119 W120
W121
W110
W115
W114
W124
W126
W116
W129
W130
W140
W155
W156
W157
W141
W99
W102
W109
W111
W125
W137
W55
W48
W62
W52
W54
W63
W53
W51
W42
W38
W37
W32
W31
W34
W170
W75
W147
W153 W152
W146W148
W142
W160
W163
W166
W162 W165
W167
W161
W164
W168
W112
W33
W66
W68
W87
W88
W49W50
W40
W41
W17
W27
W28
W21 W22
W24
W65 W67 W71
W39
W25W26
W2
EB EB
EB
EB
EB
EB
EB
EB
EB
EB
EB
BE EB
EB EB
EB EB
BE
EB
EB EB EB
EB EB
EB EB
EB
EB
EB
BE
BE
BE
BE
BE BE
EB EBBE
BE
BE
BE
BE BE
BE
BE B
12
78
12
78
12
78
E
BE
BE
C334
IC4
A.CH
INPUT
A.CH
HPF
B.CH
HPF
SENSITIVITY
B.CH
INPUT
SENSITIVITY
SUB.CH
INPUT
SENSITIVITY
SUB.CH
LPF
FREQUENCY
OPERATION
INPUT
SELECTOR
INPUT
SELECTOR
LINE IN
A
B
SUB
IC1
IC2
IC3
CN6
CN5 CN4
CN7
IC6
J1
S1
S2
S4
S3
S5
D107
D105
D103
D101
Q104 Q103
Q209
Q105
Q206
Q208
Q210
Q302
Q301
Q303
Q304
Q13 Q14
Q5
Q2
Q4
Q3
Q12
Q403
Q402
Q405
Q1
Q10
Q9
Q7
Q6
Q404
Q401
Q408
Q406
Q8
Q11
Q409
Q407
D305
D109
D209 D210
D2
D4
D6
D8
D9
D13
D15
D10
D12
D7
D1
D3
Q106
Q107
Q203
Q109
Q205
Q207
Q204
Q101
Q201
Q202
Q307
Q110
Q108
Q102
D110
D108
D106
D104
D102
D207
D205
D203
D201
D208
D304
D303
D302
D301
D206
D204
D5
D11
D17
D402
D16
D18 D401
D14
D202
IC5
X08-4080-10 A/2 (J74-1031-11)
PREAMPLIFIER UNIT
X08 B/2
E3
E4
E2
E1
Ref.No. Address Ref.No. Address
IC1 3C Q108 2E
IC2 4C Q109 2F
IC3 6C Q110 2E
IC4 2C Q201 2G
IC5 2D Q202 2G
IC6 6E Q203 2F
Q1 6D Q204 2G
Q2 6D Q205 2F
Q3 6D Q206 2G
Q4 6D Q207 2G
Q5 6D Q208 2G
Q6 6E Q209 2G
Q7 6E Q210 2G
Q8 6E Q301 3E
Q9 6E Q302 3E
Q10 6E Q303 3E
Q11 6E Q304 4E
Q12 7F Q307 3E
Q13 6D Q401 6I
Q14 6D Q402 6H
Q101 2F Q403 6H
Q102 2E Q404 6H
Q103 2F Q405 6H
Q104 2E Q406 6I
Q105 2F Q407 6G
Q106 2E Q408 5I
Q107 2F Q409 6F

KLNPRTMOQS
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Foil side view)
87
17
148
17
148
1
16
112 5
6
1
22
5
6
1
2
3
4
5
6
7
148
17
148
1
8
169
17
148
W6
VR1
VR2
VR3
VR4
R139
R140
R125
R105
R106
R101
A
A B
A B
SUB
R102
R2
R205
R206
R325
R44
R201
R202
R301
R302
R128
R142
R156
R158
R154
R152
R162
R150
R145
R149
R247
R245
R255
R257
R256
R258
R253
R254
R252
R262
R250
R251
R261
R249
R246
R248
R259
R341
R343
R345
R347
R346
R348
R344
R342
R238
R260
R349
R352
R241
R243
R242
R244
R161
R151
R153
R157 R155
R141
R143
R147
R334
R333 R332
R331
R329
R335 R327
R328
R326
R330
R8
R40
R11
R12
R29
R34
R32
R39
R21
R22
R15
R35
R27
R26
R18
R19
R20
R17
R16
R25
R410
R411
R404
R407
R401
R405
R406
R417
R419R418
R416
R36
R37
R13
R42
R41 R14
R23
R43
R24
K1
IDLE SUB
IDEL ADJ.
R6
R47
R4
R5
R7
R146
R148
R336
R339
R228
C218
C118
C136
C130
C127
C133
C129
C227
C237
C330
C327
C328C329
C333 C332 C331
C225
C233
C135
C235
C236
C230 C229
C234
C228
C226
C125
C137
C134
C128
C324
C321
C323
C320
C325
C326 C335
C216
C4
C5
C6
C24
C17
C21
C26
C403
C19 C16
C138
C126
C124
C123
C223
C115
C116
C315
C316
C319
C104
C2
C224
R132 R126
R131
R127
R129
R133
R134
R130
R136 R138
R312 R313
R160
R159
R350
R351
R144
R314 R315
R238
R236 R230 R234 R233
R229 C217
C219
C220 C120
C119
C117
C122
C309
C12 C132
C322
C11
C25
C131
C231
C232
C7
C310
C222
C113
C13
C8
C215
C9
C14
C114
C211
C209
C205
C1
C112
C110
C106
C111 C109
C105
C101
C102
C201
C202
C103
C204
C302
C3
C15
C10
C318
C317
C314
C305
C306
C313
C312
C307
C308
C303
C301
C206
C210 C212
C214
C27
C203
C311
R227 R231
R232
R239
R240
R107
R109 R111
R117
R113
R115
R119
R120
R116
R114
R118
R112
R110
R104
R108
R1
R207
R203
R209
R211
R217 R213
R215 C213
R219
R221
R223
R224
R220
R45
R216
R214 R218
R212
R210
R204
R208
R322
R323
R324
R307
R311
R308
R309
R310 R319
R317
R316
R318
R320
R321
R305
R303
R304
R306
R3
C23
C22
C18
C20
C406
C405
C404
C402
C401
R30
R38
R413
R403
R402
R415
R414 R412
R409
R408
R46
VR401
R31
R28
R33
R222
R124
R122 R121
R123
R225
R226
R103
W14
W46
W47
W60
W76
W94
W154
W117
W131
W143
W77
W57
W56
W73
W74
W59
W69
W64
W93W78
W91
W81
W103
W104
W105
W106
W92
W79
W45
W98
W132
W133
W134
W135
W150
W151
W158
W159
W96
W97
W56
W113
W80
W90
W89
W95
W29
W70
W169
W122
W123
W138
W43
W136
W144
TH1
W128
W5
W18
W16
W35
W44
W19W20
W15
W13
W11
W9
W3
W12
W10
W4
W1
W7
W8
W23
W30
W36
W72
W82 W83
W84
W86
W61
W85
W119 W120
W121
W110
W115
W114
W124
W126
W116
W129
W130
W140
W155
W156
W157
W141
W99
W102
W109
W111
W125
W137
W55
W48
W62
W52
W54
W63
W53
W51
W42
W38
W37
W32
W31
W34
W170
W75
W147
W153 W152
W146W148
W142
W160
W163
W166
W162 W165
W167
W161
W164
W168
W112
W33
W66
W68
W87
W88
W49W50
W40
W41
W17
W27
W28
W21 W22
W24
W65 W67 W71
W39
W25W26
W2
EB
EB
EB
EB
EB
EB
EB
EB
EB
EB
EB
BE EB
EB EB
EB EB
BE
EB
EB
EB
EB
EBEB
EB
EB
EB EB
EB
BE
BE
BE
BE
BEBE
EB EBBE
BE
BE
BE
BE
BE
BE
BEB
1
2
7
8
1
2
7
8
1
2
7
8
E
BE
BE
C334
IC4
A.CH
INPUT
A.CH
HPF
B.CH
HPF
SENSITIVITY
B.CH
INPUT
SENSITIVITY
SUB.CH
INPUT
SENSITIVITY
SUB.CH
LPF
FREQUENCY
OPERATION
INPUT
SELECTOR
INPUT
SELECTOR
LINE IN
A
B
SUB
IC1
IC2
IC3
CN6
CN5
CN4
CN7
IC6
J1
S1
S2
S4
S3
S5
D107
D105
D103
D101
Q104 Q103
Q209
Q105
Q206
Q208
Q210
Q302
Q301
Q303
Q304
Q13
Q14
Q5
Q2
Q4
Q3
Q12
Q403
Q402
Q405
Q1
Q10
Q9
Q7
Q6
Q404
Q401
Q408
Q406
Q8
Q11
Q409
Q407
D305
D109
D209D210
D2
D4
D6
D8
D9
D13
D15
D10
D12
D7
D1
D3
Q106
Q107
Q203
Q109
Q205
Q207
Q204
Q101
Q201
Q202
Q307
Q110
Q108
Q102
D110
D108
D106
D104
D102
D207
D205
D203
D201
D208
D304
D303
D302
D301
D206
D204
D5
D11
D17
D402
D16
D18 D401
D14
D202
IC5
X08-4080-10 A/2 (J74-1031-11)
PREAMPLIFIER UNIT
X08 B/2
E3
E4
E2
E1
Ref.No. Address Ref.No. Address
IC1 3R Q108 2P
IC2 4R Q109 2O
IC3 6R Q110 2P
IC4 2R Q201 2N
IC5 2Q Q202 2N
IC6 6P Q203 2N
Q1 6P Q204 2N
Q2 6Q Q205 2N
Q3 6Q Q206 2N
Q4 6Q Q207 2N
Q5 6Q Q208 2N
Q6 6P Q209 2N
Q7 6P Q210 2N
Q8 6P Q301 3P
Q9 6P Q302 3P
Q10 6P Q303 3P
Q11 6P Q304 4P
Q12 7O Q307 3P
Q13 6Q Q401 6L
Q14 6Q Q402 6L
Q101 2O Q403 6M
Q102 2P Q404 6M
Q103 2O Q405 6M
Q104 2P Q406 6L
Q105 2O Q407 6N
Q106 2P Q408 5L
Q107 2O Q409 6O

UWYAAACVXZABAD
2
1
3
5
7
4
6
W26
W25 W73
W74
W75
W76
W77
W111
W112
W113
W114
W115
W116
W117
W118
W142
W143
W144
W145
W146
W147
W148
W149
W152
W153
W154
W155
W156
W157
W158
W159
W84
W85
W89
W90
W102
W103
W104
W126
W120
W122
W123
W119
W97
W41
W140
W124
W141
W150
W195
W162
W174
W199
W190
W178
W173
W176
W204
W256
W182
W181
W164
W175
W171
W207
W303
W305
W302
W202
W246
W211
W257
W179
W187 W225
W264
W235
W203
W254
W258
W218
W265
W212
W255
W270
W228 W224
W229
W180
W237
W236
W170
W307
W271
W200
W198
W197W169
W168
W167
W177
W260
W186
W185
W184
W183
W189
W188
W193
W192
W209
W172
W205
W206 W241 W238
W230
W266
W210
W151
W269
W125
RR
L
L
W121
W98
W67
W68
W69
W9
W22
W23
W27
W28
W29
W30
W31
R301
R203
R119
R128
R129
R229
R127 R24
R18
R25
R20
R21
R16
R17
R12
R227
R228
VR201
VR102
VR202
IDLE B-L
IDLE A-R
B-ch
IDLE
A-ch
IDLE
IDLE
B-R
VR101
IDLE A-L
C301
C201
C202
C113
C114
C9 C1
C2
T2
C3
C16
C15
C18
C17
T1
C19
C12
C11
C214
1
2
7
8
1
1123 2349
567810
1
2
2
7
8
1
14
58
1
2
2
7
8
R23
R13
R211
R201
R209
R207
R213
R202
R226R224
R220
R222
R212
R216
R204
R208
R206
R214
R218
R210
R217
R205
R115
R101
R103
R109
R22
R112
R102
R116
R104
R114
R120
R108
R106
R130
R230
R118
R15
R1
R8
L1
L2
R11 R9
R4
R5
R2 R3 R26
R28
R10
R27
R19
R7
R6
R110
R122
R107
R105
R113
R121
R125
R123R126
R124 R117
R111
R221
R225
R223
R219
R215
W5
W43 W35
W34
W13
W6
W1
W2
TH3
TH2
W8
W21
W3
W16
W17W18
W12
W4
W11
W19
W10 W15 W14
W7
W33
W42
W50 W57 W64 W78 W86
W51 W58 W65 W79 W87 W92
W52 W44 W36 W59
W53 W45 W37 W60
W54 W46 W38 W61
W71 W62 W55 W47 W39 W82 W95
W100
W40 W48 W63
W56 W72
W83
W96
W101
W137
W161
W163
W160
W213
W219
W301
W259
W242
W248
W240
W234
W194
W247
W166 W165
W253
W220
W32
W267
W262 W208
W227
W268
W304
TH1
W221
W222
W233
W239
W252 W245
W196
W20 W215
W24
W244
W231
W201
W250
W243
W232
W251
W249
W217
W216
W261
W49
W214
W226
W223
W263
W191
W138
W70 W99
W81 W94
W109 W108 W106
W105
W129
W130
W135W136
W134 W139
W110
W66 W80 W88 W93
W107
W132W133
W128
W91
W127
W131
C211
C111
C107
C103
C105
C109
C112
C108
C102
C4
C5
C6
C7
C14
C8
C13
C104
C106
C213
C110
C101
C207
C203
C205
C209
C212
C208
C204
C206
C210
EB
5
61 25 66
11
2
EB
BE
BE
EB
EB
BE
EBEBEBEB
DGSDGSDGSDGSDGSDGS
BEBEBE
EB
EBEB
BEBE
EB
EB
EB
EB
EB
EB
EB
BE
BE
BE
BE
BE
BE
BE
X09-5330-10 (J74-1032-21)
AUDIO UNIT
D18
D16
D17
D15
D1
D2
D20
D12
D9
D10
D13
D11
D24
D3
D7 D8 D6 D5
D21
D23
D19
E2 E3 WH6
E1
D4
D14
CN8
CN1 CN2
J5
RL
L
GND BATT P.CON
RSUB
J4 J1
CN3
CN9 CN10
CN7
Q213
Q201
Q211
Q214
Q202
Q212
Q106
Q209
D207
D107
D105
D101
D108
D208
D206
D106
D102
D104
D203
D202
D204
D103
Q205
Q201
Q109
Q105
Q103
Q107
Q207
Q206
Q204
Q208
Q210
Q110
Q104
Q108
Q203
Q113
Q101
Q111
Q114
Q102
Q7
Q2 Q4 Q6 Q1 Q3 Q5
Q8
Q9 Q11
Q10
Q112
D205
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view)
9 10
Ref.No. Address
Q1 4AB
Q2 5AB
Q3 4AB
Q4 5AB
Q5 3AB
Q6 5AB
Q7 5Z
Q8 4Z
Q9 3Z
Q10 4Z
Q11 3Z
Q101 3Y
Q102 5Y
Q103 3X
Q104 5X
Q105 2X
Q106 4X
Q107 3X
Q108 5X
Q109 2X
Q110 4X
Q111 3Y
Q112 5Y
Q113 2Y
Q114 4Y
Q201 2W
Q202 5W
Q203 3W
Q204 5W
Q205 2W
Q206 4W
Q207 3W
Q208 5W
Q209 2W
Q210 4W
Q211 3W
Q212 5W
Q213 2W
Q214 4W

AE AF AH AJ AL ANAG AI AK AM
2
1
3
5
7
4
6
W26
W25
W73
W74
W75
W76
W77
W111
W112
W113
W114
W115
W116
W117
W118
W142
W143
W144
W145
W146
W147
W148
W149
W152
W153
W154
W155
W156
W157
W158
W159
W84
W85
W89
W90
W102
W103
W104
W126
W120
W122
W123
W119
W97
W41
W140
W124
W141
W150
W195
W162
W174
W199
W190
W178
W173
W176
W204
W256
W182
W181
W164
W175
W171
W207
W303
W305
W302
W202
W246
W211
W257
W179
W187
W225
W264
W235
W203
W254
W258
W218
W265
W212
W255
W270 W228
W224
W229
W180
W237
W236
W170
W307
W271 W200
W198
W197 W169
W168
W167
W177
W260
W186
W185
W184
W183
W189
W188
W193
W192
W209
W172
W205
W206
W241
W238
W230
W266
W210
W151
W269
W125
R
R
L
L
W121
W98
W67
W68
W69
W9
W22
W23
W27
W28
W29
W30
W31
R301
R203
R119
R128
R129
R229
R127
R24
R18
R25
R20
R21
R16
R17
R12
R227
R228
VR201
VR102
VR202
IDLE B-L
IDLE A-R
B-ch
IDLE
A-ch
IDLE
IDLE
B-R
VR101
IDLE A-L
C301
C201
C202
C113
C114
C9
C1
C2
T2
C3
C16
C15
C18
C17
T1
C19
C12
C11
C214
1
2
7
8
1
1
123 23 49
567 810
1
2
2
7
81
14
58
1
2
2
7
8
R23
R13
R211
R201
R209
R207
R213
R202
R226R224
R220
R222
R212
R216
R204
R208
R206
R214
R218
R210
R217
R205
R115
R101
R103
R109
R22
R112
R102
R116
R104
R114
R120
R108
R106
R130
R230
R118
R15
R1
R8
L1
L2
R11 R9
R4
R5
R2 R3 R26
R28
R10
R27
R19
R7
R6
R110
R122
R107
R105
R113
R121
R125
R123R126
R124 R117
R111
R221
R225
R223
R219
R215
W5
W43 W35
W34
W13
W6
W1
W2
TH3
TH2
W8
W21
W3
W16
W17W18
W12
W4
W11
W19
W10 W15 W14
W7
W33
W42
W50 W57 W64 W78 W86
W51 W58 W65 W79 W87 W92
W52 W44 W36 W59
W53 W45 W37 W60
W54 W46 W38 W61
W71 W62 W55 W47 W39 W82 W95
W100
W40 W48 W63
W56 W72
W83
W96
W101
W137
W161
W163
W160
W213
W219
W301
W259
W242
W248
W240
W234
W194
W247
W166 W165
W253
W220
W32
W267
W262 W208
W227
W268
W304
TH1
W221
W222
W233
W239
W252 W245
W196
W20 W215
W24
W244
W231
W201
W250
W243
W232
W251
W249
W217
W216
W261
W49
W214
W226
W223
W263
W191
W138
W70 W99
W81 W94
W109 W108 W106
W105
W129
W130
W135W136
W134 W139
W110
W66 W80 W88 W93
W107
W132W133
W128
W91
W127
W131
C211
C111
C107
C103
C105
C109
C112
C108
C102
C4
C5
C6
C7
C14
C8
C13
C104
C106
C213
C110
C101
C207
C203
C205
C209
C212
C208
C204
C206
C210
EB
56 12 56
61 12
EB
BE
BE
EB
EB
BE
EBEBEB
E
B
DGSDGSDGSDGSDGSDGS
BEBEBE
EB
EBEB
BEBE
EB
EB
EB
EB
EB
EB
EB
BE
BE
BE
BE
BE
BE
BE
X09-5330-10 (J74-1032-21)
AUDIO UNIT
D18
D16
D17
D15
D1
D2
D20
D12
D9
D10
D13
D11
D24
D3
D7
D8
D6 D5
D21
D23
D19
E2E3
WH6
E1
D4
D14
CN8
CN1
CN2
J5
RL
L
GNDBATTP.CON
R SUB
J4
J1
CN3
CN9
CN10
CN7
Q213
Q201
Q211
Q214
Q202
Q212
Q106
Q209
D207
D107
D105
D101
D108
D208
D206
D106
D102
D104
D203
D202
D204
D103
Q205
Q201
Q109
Q105
Q103
Q107
Q207
Q206
Q204 Q208
Q210
Q110
Q104
Q108
Q203
Q113
Q101
Q111
Q114
Q102
Q7
Q2 Q4 Q6 Q1 Q3 Q5
Q8
Q9 Q11
Q10
Q112
D205
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Foil side view)
11 12
Ref.No. Address
Q1 4AG
Q2 5AG
Q3 4AG
Q4 5AG
Q5 3AG
Q6 5AG
Q7 5AI
Q8 4AI
Q9 3AI
Q10 4AI
Q11 3AI
Q101 3AJ
Q102 5AJ
Q103 3AJ
Q104 5AK
Q105 2AJ
Q106 4AK
Q107 3AJ
Q108 5AJ
Q109 2AJ
Q110 4AJ
Q111 3AJ
Q112 5AJ
Q113 2AJ
Q114 4AJ
Q201 2AL
Q202 5AL
Q203 3AL
Q204 5AL
Q205 2AL
Q206 4AL
Q207 3AL
Q208 5AL
Q209 2AL
Q210 4AL
Q211 3AL
Q212 5AL
Q213 2AL
Q214 4AL

ACEG IBDFHJ
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
-1.2V0V
-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)
D205D201
D203 D207
D208D204
D202 D206
S4
IC2
(4/4)
IC2
(2/4)
IC4
(3/4)
(4/4)
IC4
(2/4)
IC5
PHASE
INVERTER
HPF
D209D210
Q201
Q202
MUTE
Q203 Q205
Q207 Q209
Q210Q208
Q206Q204
S3
D106D102
D108D104
D107D103
D105D101
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)
Q110Q108
D110
Q102
Q104 Q106
MUTE
D109
Q101
Q103
Q109Q107
Q105
D304D302
D303D301
(1/4)
IC3
(2/4)
IC3
S5
LPF
IC3
(3/4)
MUTE
Q307
Q301
Q304Q303
Q302
IC5
(3/4) (4/4)
IC5
D1D2
D3D4
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
315
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
C211
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 18KR234 18K
R232 6.8K
R227 100KR228 100K
R225 39KR226 39K
0.22
C217
0.22
C219
R229
5.6K
R230
5.6K
C218
0.22
C220
0.22
5
6
11
47
3
21
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 18KR246 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
C112
C116
R118
6.8K
C110
22P
3
2
6.8K
R112
1
R122
82K 6
5
6710u35
+
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
R117
6.8K
C111
R121 7
100K
R119
R116 6.8K
C114 22P
100K
R120
C113 22P
C115
10
R115 6.8K
9810u35
+
R130
R126 39K
C118
0.22
C120
0.22
5.6K
8
10
910K
R136
C124
C122 22P 22u35
+
13
R138 10K
12 14
10K(A)
VR1
R133 18K
R131 6.8K
R125 39K
R127 100KR128 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
R311
100K
C307 22PR308 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
21
+
10u35
C308 67
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
64
R314 10K
C310 22P
10K
R313
10u35
+
C311
100K
R315
22u25
C4
+
98
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
C11
+
470
R51
R52
470
R53
470
R54
470
R55
470
R56
470
R57
470
R58
470
R59
470
R60
470
S5
200Hz50Hz
Q301-304
S4
S3
S2
80HzOFF 150Hz
150HzOFF
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.

KLNPRTMOQS
2
1
3
5
7
4
6
KAC-859
11.4V
-0.6V
1.2V
1.2V 0.55V
25.2V
0V
-0.55V
-1.2V
-1.2V
25.2V
-25.2V
0.55V
1.2V1.2V
-0.6V
11.4V
0V
-0.55V
-1.2V
-1.2V
-25.2V
-14.3V
-45.4V
25.2V
-24.3V
25.2V
1.2V
1.2V 0.55V
-0.6V
11.4V
-1.2V
-1.2V
-0.55V
0V
25.2V
-25.2V
0V
0.55V
1.2V1.2V
-0.6V
11.4V
-1.2V
-1.2V
-0.55V
-25.2V
21.5V
-5.1V
5.7V(MUTE)
-25.2V
14.3V 21.5V
25.2V
14.4V
0V
0V
0V
0V
0V
-45.4V
45.4V
4.8V
4.8V
21.5V
25.2V
8.1V
14.4V
14.4V
14.4V
45.4V
1.2V
0.57V
0V
-1.2V
-45.2V
-45.4V
-1.2V
-45.4V
-0.58V
5.0V
5.0V
0V
5.0V
2.5V
5.0V
0.1V
0.7V
1.7V
3.8V
14.3V
14.4V
8.1V
1.7V
24.7V
0V
0V
0.7V 0V 8.2V
0.7V
0V
5.0V
B LINE
B LINE
6
5
4
3
2
1
-HB
+HB
SP OUT
SP OUT
A CLAS
NF
6
5
4
3
2
1
PRT OC
PRT DC
DD CON
DD CON
POSI
POSI
1
2
3
4
5
6
P-CON SP
PRT CONT
LED
P-CON
BATT
GND
220(B)
VR401
470
R404 R403
1.5K
R402
3.9K 3.9K
R401
C401 22u50
+
10u35
+
270
100P
C403
100
R405
1.3K
0.1 2W
4700P
470
R414
0.1 2W
R418
10
R408
10
R409
100P
C404
1.3K
R419
4700P
0.1 2W
0.1
R407
R412
R415
470
10
R411
10
R410
22K
R39
10K
R38
100u10
C20
+
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
99
10
9
10
R25
1.5K
R26
1.5K
10u35
+
C17
4
3
3 4
R34 16K
C24 1000P
1u50
C18
+
680K
R37
R36 27K
R35 4.7KR32 680
R33 27K
C19 10u35
+
R28 47K
R30 10KR31 220K
TH1
R29 1K
C26 1u50
+
R27
10K
C21 220u10
+
K1
2
1
R413
C406
R417 R416
C405
C402
680
R11
680
R12
10u35
C16
+
10K
R13
10K
R15
100
R14
1000P
C27
R44
100K
R46
10K
R19
33K
R20
1.5K
R18
3.3K
R21
100K
R23
1.5K
R22
3.3K
R17
10K
R45
4.7K
R16
10u35
C22
+
Q13,14
22K
R24
+
C23
47u25
Q1 Q2
Q6-9
Q3
33K
R43
TH1
Q12
R40 47K
VR401
Q401
R406
100
820
R42 R41
820
2W
1.8K
R119
2
1
Q101,102
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
1
2
3
4
5
6
7
8
BR-
BR+
BL+
BL-
AR-
AR+
AL+
AL-
Q103-106
1.8K
R121
R123
0.1 2W
R125
0.1 2W
330
R117
1.3K
R115
1.3K
R113
4700P
C105
4700P
C107
100P
C111
100P
C109
100
R109
C103
R111
100
430
R107
220(B)
VR101 R105
1.5K
2.7K
R103
10u35
C101
+
2.7K
R101
47K
R129
5
6
7
VR102
220(B)
R130
47K
R108
430
C102
1.5K
R106
10u35
+
R102
2.7K 2.7K
R104
R112
100
C112 100P
4700P
C108
R116
1.3K
4700P
C106
R114
1.3K
1.8K
R126 R124 R118
330
R122
0.1 2W 0.1 2W
C104
100
R110
C110
100P
R120
1.8K
220(B)
VR202
47K
R230
430
R208
C202
+
10u35
2.7K
R202
R206
1.5K
R204
2.7K
VR201
220(B)
R229
47K
R207
430
C201
1.5K
R205
10u35
+
R201
2.7K 2.7K
R203
R220
100
R212
100P C212
4700P
C208
1.3K
R216
C204
4700P
C206
1.3K
R214
R226
1.8K
330
R218
R222
0.1 2W
R224
1.8K
0.1 2W
R211
R210
100
100P
C210
100
C211
100P
4700P
C207
R215
1.3K
4700P
C205
R213
1.3K
1.8K
R225 R223
R217
330
R221
0.1 2W 0.1 2W
C203
100
R209
Q203-206
C209
100P
R219
1.8K
2
1
3
2
4
1
6
7
8
P-CON SP
PRT CONT
LED
6
4
5
BATT
P-CON
2
3
GND1
PRT DC2
PRT OC1
DD CON
DD CON
POSI
POSI
4
3
5
6
TH2TH3
TH1
4
3
1
2
3 P-CON
2
1 GND
BATT
25A
CN9 CN10
25A
3
6
5
4
2
1
10
9
8
7
Ach,Bch
40W/4
60W/2
120W/4
150W/2
SUBch
2
1
4
3
8
5
1
2
2
1
3
1
2
3
4
5
6
NF
A CLAS
SP OUT
SP OUT
+HB
-HB
0.047
C113 10
R127
1/2W
R128
C114
0.047 1/2W
10
0.047
C213 10
R227
1/2W
C214
0.047
R228
10
1/2W
2
1
Q107-110
Q201,202
3.3K
R1
10u35
+
C1
0.047
C19
0.047
C30110
R301
4.7K
R15
3
330
R16
47K
R22
R27
4.7K
43K
R19
10K
R21
68
R13
4.7K
R18
15K
R17
100u35
C15
+
10u35
C16
+
100u25
C17
+
47u25
C9
+
8.2K
R20
47u25
C18
+
4
3
L1
L2
3900u16
C2
+
3900u16
C3
+
T1
T2
R11
10 1/2W
C11
1000P
C12
1000P
R12
10 1/2W 1000P 1000P 10 1/2W10 1/2W
R10 C6 C5 R9
Q9,11
2.2K
R23
3300u35
C13
+
3300u35
C14
+
C8
2200u50
+
C7
2200u50
+
33K
R28
33K
R26
4.7K
R6
75
R3
22
R2
4.7K
R7
22
R5
0.015
C4
10 1/2W
R8
470
R302
470
R303
470
R304
470
R305
470
R306
470
R307
470
R308
470
R309
470
R310
470
R311
470
R312
470
R313
470
R314
470
R315
470
R316
470
R317
470
R318
470
R319
470
R320
470
R321
470
R322
470
R323
470
R324
470
R325
470
R326
470
R327
470
R328
470
R329
470
R330
470
R331
470
R332
470
R333
470
R334
470
R335
470
R336
470
R337
470
R338
470
R339
470
R340
470
R341
470
R342
470
R343
0.010.01
R24 10
75
R4
24K
R25
0.01 0.01
R345
R344
470 470
1/2W
Q111-114
Q211-214
Q207-210
Q8
Q10
F1 F2
6
5
4
3
2
1
Q402,403
Q404,405
Q406-409
1.5K
CN6
CN4
CN5
IDLE
CURRENT
Q401
TEMPERATURE
COMPENSATION
D401
Q402
Q403
Q404 Q406
Q408
Q409
Q407Q405
OVER
CURRENT
DET.
D16
PROTECTOR
CONTROL
OSCILLATOR &
CONTROLLER
DC/DC CONVERTER
DC/DC CON.
FET DRIVER
D17 D14
CN7
D6
D7
D5
Q7Q6
Q8 Q9
D9
D10
D8 Q2
Q3
Q13
Q1
Q14
Q5
Q11
Q10
D11
/P.CON. SW
SP-P.CON.
DET.
MUTE
D13
Q4
SUB-AMP.
SP-RELAY
DRIVER
P.CON
DET
DET.
VOLTAGE
OVER
P.CON POWER
CONTROL
D12
SHIELD CASE
E1
HEAT
SINK
PROTECTOR
DC DET.
D18
Q12
D402
D15
IC6 : UPC494C
Q1-4,6,7,12,13,402
: 2SC945(A) (Q,P)
Q401 : 2SC4137(V,W)
Q403 : 2SA992(F,E)
Q404 : 2SC2590(Q,R)
Q405 : 2SA1110(Q,R)
Q406,408 : 2SC5100LB
Q407,409 : 2SA1908LB
D5-10,14-18,401,402
: 1SS133
(X08-4080-10) (B/2)
Q107
Q111
CN7
TEMPERATURE
COMPENSATION
CN2
CN3
J5
CN1
Q101
Q105
DETECTION
OVER CURRENT
Q113
Q109
D105
D107
D103
D101
Q103
D102
Q102
D108 D106
Q114
Q110
Q106
D104
Q104
Q112
Q108
IDLE CURRENT
IDLE CURRENT
Q202
Q201
D202
D201
D206 D208
Q210
Q214
Q206
Q204
D207
D205
Q213
D204
Q208
Q212
Q209
Q205
D203
Q203
OVER CURRENT
DETECTION
Q211
Q207
IDLE CURRENT
IDLE CURRENT
D18
D17
D16 D15
E3
E2
J1
J4
L
R
R
L
SUB
A-CH
B-CH
SP OUT
A-CH
R
L
R
L
SP IN
B-CH
IDLE
ADJ.
(A)
(B)
ADJ.
IDLE
CN8
WH6
DRIVE
POWER
TEMPERATURE
DETECTION
TEMPERATURE
D19
POWER
(RED)
D20
D12
D10
D14
Q8Q10
Q7
D9 D11
D21
D13 D23
Q6
Q4
Q2
Q5
Q1
Q3
D2
D1
D3
D4
D6
D5
DRIVER
DC/DC CONVERTER
CIRCUIT
DRIVER
MUTE
DRIVER
MUTE
Q9
Q11
Q1-6 : 2SK2897-01MR-F
Q7 : DTA124ESA
Q8-11,103,104,203,204 : 2SC945(A) (Q,P)
Q101,102,201,202 : 2SC4137(V,W)
Q105,106,205,206 : 2SA992(F,E)
Q107,108,207,208 : 2SC1627A
Q109,110,209,210 : 2SA817A
Q111,112,211,212 : 2SC5100LB
Q113,114,213,214 : 2SA1908LB
D1,2 : 1N5406-M
D3,4,9-12,15-18,20,21,24,101-108,201-208
: 1SS133
D5,7 : FML22S A
D6,8 : FML22R A
D13 : RD5.1JS(B)
D14,23 : RD15JS(B)
:D19 B30-1460-05
(X09-5330-10)
D7
D8
D24
GND LINE
SIGNAL LINE
D11,13
D12
RD7.5JS(B):
RD16JS(B2):
Q5,8-11,14 2SA733(A) (Q,P):
1/2
X08-A/2
-E3
X08-A/2
-E4
1/2
X08-A/2
-E2
1/2
STAGE
POWER
STAGE
COMPENSATION
POWER
POWER
STAGE
STAGE
DRIVE
RIPPLE
FILTER
AVR
A-CLASS
POWER
DRIVE
STAGE
IDLE
ADJ.
POWER
STAGE
(X08-4080-10) (B/2)
PRE AMPLIFIER UNIT
IC6
AUDIO UNIT
(X09-5330-10)
KAC-859 (K,M,E,J)
A
B
C
(2/2)
22K
22K
2SA733(A)
2SA817A
2SA992
2SC1627A
2SC1845
2SC945(A) NJM2058D
UPC4574C UPC494C
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.