Kenwood KAC-8101D, KAC-8151D Schematics
A B C D E
KAC-8101D/8151 D
1
(X09-5480-1x) (A/2)
J1
L
INPUT
R
L
OUTPUT
2
SPEAKER
INPUT
R
J3
21
R8
34
65
87
R7
109
3
4
C9
180P
0.01
C10
D71 D72
R10
47K
R12
2.2K
47K
R11
47K
R9
2.2K
47K
C3
R1
10u35
1K
+
C1
R3
1000P
C2
R4
1000P
1KR210u35C427K
+
C6
10u35
+
C8
10u35
+
C7
10u35
+
C5
10u35
+
10K
10K
27KR51K
R6
C61
0.01
R13
R21 15K
C105
10u35
++
C106
10u35
10u35
0.01
C62
R101
R102
C60
+
ISO AMP
16.0V
IC1(1/2)
D1D2
D3
33P
C23
R23 33K
D4
C24 47P
10K
R22
150
R111
150K
R113
33K
R114
D5
10K
Q1
D7D6
R112
150
100K
16.0V
IC4
(2/2)
8
6
7
5
4
R62
100K
R24
8
3
10K
15
2
4
R105
1K
47u25
R63
INVIN1
678
D75D76
4.7K
+
R123
10K
INVIN2
RESR31
C68
R72
R106 10K
IC7
(1/2)
R122
470
RESR32
OUT1
0.01
56K
C21
C22
10.2V
C103
1800P
C114
47P
R119
680K
68K
C115
0.01
C67
9
OUT2
TTRIM1
C25
0.01
0.01
3
2
3900P
R124
24K
10u35
TTRIM2
R115
E.X.P
C111
1u50
+
82K
8.2K
R116
C63
IC6
C64
R71
56K
D73D74
820
R104
D8
D10
D9
D12 D11
R117
1K
R118
0.1
C112
C113
C65
+
+
10u35
2.2u50
16151413121110
VCC
REIN2
ACIN2
RECAP2
RECAP1
REIN1
ACIN1
GND
1
2
345
0.01
0.01
C66
10P
5
6
R65
4.7K
C69
+
R25
8
IC7(2/2)
4
R64 22K
33P
C26
10K
10K
R27
10K
R28
3K
R107
1
7
SUMMING
AMP
-10.2V
R66
1
C104
4.7K
564
2
0.01
R67
IC1(2/2)
6
R26 10K
C27 10P
R108
R120
4.7K
R121
4.7K
3
10K
1.5K
3
2
IC4(1/2)
S3
7
R68 4.7K
C71 100P
C28
10u35
+
VR1
10K(A)
3
2
3
4
5
6
7
1
BASS BOOST
IC2(1/2)
8
R103
1.5K
3
C31
0.01
2
6
C32
NC14
NC13
AOUT
BIN-
BIN+
BGND
47K
R69
4
C33
0.22
R31
24K
0.01
14
13
12
11
V+
0.01
C101
10
9
0.01
C102
8
7
R199
2.2K
5
27K
C195
R200
6800P
5
2
1
4
430
R29
IC9
1
NC1
NC2
AGND
AIN+
AINVBOUT
C72
10u35
+
1
R131
D19
750
D13
R32
300
R201
2.2K
D20
R132
C131
510
47u25
C34
2.2u50
90Hz OFF
1
2
+
Q28
22K
R34
220K
456
1
2
14
3
IC10
(1/4)
IC11 IC11
(3/4) (4/4)
1
3
2
R205
100K
22K
C194
6
378
+12dB
IC10
4
5
(2/4)
C133
39P
12
13
0.01
S1
R45
1.2K
6
R134
10K
D15
R133
10K
D14
11
C132
IC8
5
BIN+
6
BIN-
7
BOUT
8
V+
R33
220K
8.0V
IC12
D58D59
0.01
C37
0.01
C38
R46
1.2K
IC10
13
12
(3/4)
IC10
10
9
7
39P
DEAD TIME
GEN CIRCUIT
4
GND
3
AIN+
2
AIN-
1
AOUT
LEVEL SW
R48
R47
680
330
16151413121110
X2
VDD
Y0Y2YCOMY3Y1
1
2
345
11
4
5
IC11
(4/4)
(2/4)
10
8
9
R202
100K
R203
1
X1
IC11
(1/4)
14
7
9
9
9
B
A
X0
X3
XCOM
-7.9V
INH
VEE
VSS
678
R135
1K
D16
R136
8
1K
D17
16.0V
R198
39K
C193
47u2510K
+
R196
4.7K
R197
4.7K
65.7V
W404
Q53
D45
D49
16.0V
R319
R320
Q52
Q49
++
820
C317
47u25
+
C315
4.7K
47u25
+
R322
D48 D47
C316
47u25
10
+
C318
47u25
Q50
5
Q51
10K
R321
15K
R323
-16.0V
R315
Q47
R317
24K
R318
24K
Q48
R316
51.8V
10
22
R311
1/2W
+
C313
3300u63
C309
1000P
C311
1000P
C312
1000P
+
C310
3300u63
D46
R312
1000P
22
1/2W
C314
R314 56K R313 56K
10
-51.8V
C320
R325 56K
47u25
R324
D50
5.6K
++
+
C319
47u35
D51
D53
D52
R326
C321
10
2200P
1/2W
L2
8
7
9
6
10
5
4
11
12
13
14
3
2
1
C303
R309
+
3900u16
DC/DC
123
Q41 Q43 Q45
C304
6800P
10
1/2W
Q46 Q44 Q42
+
C302
3900u16
3421
123
W405
W403
R307
R308
R305
R306
Q37
D43
10
Q39
R303
75
4.7K
4.7K
D44
10
R304
75
Q40
Q38
R301
R302
1.5K
1.5K
R271
R272
6
D30
3
D60
8
4
10K
0.01
2.2K
C271
6
CAUTION : For continued safety, replace safety critical components only
with manufacturer's recommended parts (refer to parts list).
Indicates safety critical components. 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.
• DC voltages are as measured with a high impedance voltmeter. Values
may vary slightly due to variations between individual instruments or/
2SA1123
2SA1286-T11
2SA1534A
2SA733(A)
2SA992
2SC1845
2SC2631
2SC3940A
2SC945(A)
B
C
E
and units.
7
X09-5480-1x (1/2)
6
JIHGF
4
2
2K
XCOM
Y3
8
10K
KAC-8101D/8151 D
1
IC2
(2/2)
KAC-8151D
ONLY
47K
R50
C40
100P
470
R144
Q5
750
1/2W
R142
0.01
0.68
C205
0.01
5.0V
C272
2.2u50
TH1
2.2K
R274
27K
R284
10K
D54
D55
47
R145
R220
C274 1000P
R36
1K
R35
220
D56
D57
270
R146
Q7
Q8 Q10
Q27
C206 0.01
220K
R278
1K
330K
R275
R280 3.9K
C273
0.1u50
+
R281 1K
R282 16K
C275
47u25
+
R38 10K
C35 470P
R37
65.4V
10
R147
Q9
10
R14910R150
10K
R221
R222
Q26
D42
10K
R279
5
6
2.2K
R148
1K
1
2
3
4
5
6
7
8
9
10
121110
9
B
A
X0
X3
-7.9V
Y1
INH
5
678
1
)
R135
1K
47K
R49
VEE
VSS
C39
100P
470
R143
Q3 Q4
D16
750
R141
R136
1K
1/2W
D17
16.0V
198
39K
193
7u25
196
.7K
197
.7K
3
8
4
D30
D60
C201
C202
6
R273
27K
R276
10K
R277
1.5K
R283
10K
C276
D41
10u35
+
Q36 Q55
.
0.01
C271
Q22
10
CASCADE
R219
20K
IC5
(1/2)
7
-16.0V
IC15
NI IN1
I IN1
FBACK
DTCON
CT
RT
GND
C1
7
R171
VI COM
8
4
REFOUT
OUTCON
R173
1.5K
NI IN2
I IN2
VCC
1/2W
R218
R217
L.P.F
R39
470
C36
0.47
R174
10K
1K
1/2W
Q21
47K
R172
12K
R216
10K
6
5
1.3K
16
15
14
13
14.2V
12
11
C2
10
E2
9
E1
R40
3.3K
R215
C171
20K
0.01
D22
VR2
10K(C)
465
1
3
Q61
D18
Q63
330
R151
Q62
Q64
1.2K
R152
MOS FET
DRIVER
R214
20K
D21
IC5
(2/2)
1
680
R265
680
R266
KAC-8151D ONLY
R43
10u25
J2
1
2
3
4
5
6
7
1
2
3
1K
10
9
T1
T2
T3
+
T4
T5 P-CON
T6 GND
T7 BATT.
FUSE
T1
T2
T3
IC1-5 : NJM4565M
IC6 : SA571N
IC7 : NJM5532MD
IC8 : NJM2903M
IC9 : NJM319D
IC10,11 : TC74HC00AF
IC12 : TC4052BF(N)
IC15 : UPC494GS
Q1,23,24,31,32,36-38,55
Q3,4,21 : 2SC2631(Q,R)
Q5,7-10 : 2SA1352(E,F)
Q11,14,17,20,27,61,62
Q12,13,63,64 : 2SA1286-T11
Q15,16,65,66 : STW34NB20
Q18,19,26 : 2SA1376A(L,K)
Q22 : 2SA1123(Q,R)
Q25,34,39,40,51,52
Q28 : DTC124EUA
Q33 : 2SA1534A(R,S)
Q41-46 : FKV550T
Q47 : 2SC1845(F,E)
Q48 : 2SA992(F,E)
Q49 : 2SC4883A
Q50 : 2SA1859A
Q53 : 2SC3940A(R,S)
D1-5,8,9,11,12,14-17,19,21,
D6,7,37,71,72 : RD10JS(B)
D10,13,18 : RD5.1JS(B)
D20 : RD4.7JS(B)
D30,41,42 : MA111
D31,32 : RM4ZLF-J1
D33 : RD7.5JS(B)
D34,47,48 : RD16JS(B)
D45 : FML22S
D46 : FML22R
D49-52 : S5566B
D53 : RD15JS(B)
D58,59 : RD8.2JS(B)
D62 : MA3100-M
D401 : B30-1669-05
C53
0.47
8
2
2
R51
1K
100
R155
100
R156
2
3
C204
7
D40
9
3
D39
C54
10u35
R213
0.15
Q11
Q13
Q12
20K
+
R262
D38
R263
Q14
Q34
1
3
4
IC3
(1/2)
C51
0.01
0.01
C52
R159
10
R161
100
R153
10
47K
R157
R160
10
R162
100
R154
10
47K
R158
-51.8V
47K
R211
C203
10u35
+
10K
R212
33K
R261
C254
10K
+
C253
C255
10u35
100
0.01
10K
C256
R264
C55
10u35
+++
0.1
R181
Q65
Q66
0.1
R182
R260
0.01
10K
+
10u35
R55
3.9K
IC3(2/2)
C57
C58
1u50
1u50
22K
R52
30K
R54
0.1
0.1
2W
2W
2W
R183
R185
Q15
POWER
FET
Q16
0.1
0.1
2W
2W
2W
R186
R184
L3
C154
6800P
C153
C155 10
6800P
4.7
2W
R163
2
Q33
R259
33K
2.2K
R258
R267
D37
D62
0.1
C257
6
5
51.8V
C156 10
D36
4.7K
C151
C152
Q25
Q24
R192
R257
D35
R191
3.3K
3.3K
I.F.S
0.1
0.1
R233
Q32
7
15Hz 25HzOFF
C192
22K
14.4V
33K
R256
C191
0.047
R255
4.7K
Q17
Q18
Q31
0.047
R234
C59
1u50
+
10K
R251
R195
22K
Q23
3.3K
D33
R252
R56
510K
S2
810976
10K
1
2
345
R61
24K
8.2K
R193
1
5
Q19
Q20
3.3K
R194
4
2
10.0V
0.01
C232
82K
R231
8
+
10K
C231
100u10
T5
3.3K
R253
D34
3.3K
R254
26uH
3.3K
R232
L4
D31
C252
10u35
T5
C251
D32
+
J4
1
R41
1K
2
R42
3
4
1K
: 2SC945(A)(Q,P)
: 2SC3478A(L,K)
: 2SA733(A)(Q,P)
22,35,38-40,43,44,54-57,60,
73-76 : 1SS133
SP OUT
200W / 4
400W / 2
500W / 1
(X09- ) (B/2)
CN1WH1
D401
1
0.01
C401
2
3
KAC-8101D/8151D
J1
SIGNAL LINE
GND LINE
B LINE
B LINE
(X16-2390-10)
4
3
D1
D2
2
110
6
7
8
9
5
4
3
2
1
2
3
4
5
6
DTC124EUA TC4052BF NJM2903M
UPC494GS TC74HC00AF
NJM4565M
NJM5532MD
X09-5480-1x (2/2)
7
7
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