Kenwood KAC-8404 User manual

This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
SERVICE MANUAL
© 2007-11 PRINTED IN JAPAN
B53-0600-00 (N)519
KAC-8404
POWER AMPLIFIER
Accessories
(W01-1606-05)
Screw & wrench key set
(N99-1820-05)
Connecting cord assy
(E30-6144-05)
19cm
4/3/2 Channel
LINE IN
SP LEVEL INPUT
SIGNAL SENSING
TURN-ON
FUSE[40A] P.CON LEFT
BRIDGED
POWER IN
SPEAKER OUTPUT
RIGHT LEFT
BRIDGED
SPEAKER OUTPUT
RIGHT
4/3/2 Channel
M type
E,K type
Dressing Panel
(A21-6635-02): (E,K type)
(A21-6636-02): (M type)
Fuse (40A)
(F52-0016-05)

2
KAC-8404
BLOCK DIAGRAM
50W x4ch / 4
75W x4ch / 2
LINE IN (0.2V~5.0V )
B.Boost SEL.
L..P.F / OFF/ H.P.F
SPEAKER LEVEL INPUT
F.P.H
F.P.L
F.P.H
F.P.L
F.P.H
F.P.L
F.P.H
F.P.L
)Bd21-(zH002zH05F.P.L
)Bd21-(zH002
zH05F.P.H
SP
OUTPUT
ETUM
TTA
POWER AMP
AL
ETUM
TTA
(INV)
POWER AMP
AR
SP
OUTPUT
ETUM
TTA
POWER AMP
BL
ETUM
TTA
(INV)
POWER AMP
BR
SENS.
VOL
SENS.
VOL
ssaB
tsooB
ssaB
tsooB
ST /
MONO
SEL
ST /
MONO
SEL
-OSI
PMA
-OSI
PMA
LA
RA
PMA-OSI
PMA-OSI
LB
RB
+L
-L
-R
+R
+L
-L
-R
+R
40Hz
+18dB
BATT.
GND
P- CON
POWER
INDI.
LAMREHT
TED
TESFFO-CD
TED
REWOP
FFO/NO
CD/CD
NOC
NAF
RVA
NAF
RETLIFCL
NOC-P
YTIROIRP
15V
RVA
DAOLREVO
TED
B
LANGIS
ROTCETED
IC3,4
IC3,4
IC1,2
IC1,2
IC2
IC3
IC2
IC3
IC8
IC9
IC8
IC9
IC5,7
IC5,7
Q709 Q701-704
Q11,12 IC5
Q707,708 Q703 Q710
IC4
IC4
Q301,315
Q302,316
Q401,415
Q402,416
Q303
Q304
Q403
Q404
TH1
X09-874 X08-443
X08-443

3
KAC-8404
COMPONENTS DESCRIPTION
ADJUSTMENT
No. ITEM ALIGNMENT POINT METHOD ALIGN FOR NOTE
1 IDEL CURRENT
VR5 (A-Lch)
VR6 (A-Rch)
VR7 (B-Lch)
VR8 (B-Rch)
Connet a DC voltmeter
between check land
(Refer to a figure)
2.5mV After Power on 5minutes
●PREAMPLIFIER UNIT (X08-4430-10)
Ref. No. Application/Function
IC1-3 HPF, LPF
IC4 Reverse circuit
IC5,7 Bass Boost
IC6,8,9 HPF, LPF
IC10 Attenuator circuit
Q301,302,315,316,
Q401,402,415,416 Attenuator circuit
Q303,304,403,404 Mute circuit
Q305-308,Q405-408 Differential circuit (First stage)
Q309,310,313,314,
Q409,410,413,414 Differential circuit (Second stage)
Q311,312,411,412 Current mirror
Q701-704 DC protection
Q705-708 Shock noise mute
Q709 Over current detection
Q710 Stabilized power supply
●AUDIO UNIT (X09-8740-10)
Ref. No. Application/Function
IC1-4 Isolation circuit
IC5 DC-DC IC
Q1,2 Switch
Q3-6 Gate driver
Q7-10 DC/DC comparator
Q11,12 Constant voltage circuit
Q301,302,401,402 Temperature compensation
Q303-306,Q403-406 Over current detection
Q307-310,Q407-410 Darlington
Q311-314,Q411-414 Final stage
Q701 Voltage supply
Q702 Over voltage detection
Q703 P-CON
Q704,705 Mute driver
Q706 Shock noise mute driver
Q707,708 Auto P-CON driver
VR8
VR7 VR6 VR5
X08-443 (B/2)
Q311
Q313
Q312
Q314
R319 W98
DC voltmeter
A-Lch 2.5mV
+
-
W83 R320
DC voltmeter
A-Rch 2.5mV
Q413
Q411
Q412
Q414
B-Rch
A-Rch
B-Lch A-Lch
+-
-
+
DC voltmeter
B-Lch 2.5mV
W8
W45
R420
R419
DC voltmeter
B-Rch 2.5mV
-
+

4
KAC-8404
ABCDE
1
2
3
4
5
6
7
AUDIO UNIT
X09-8740-10 (J76-0471-01)
C13
C8
C9
L2
C16
C17
C1
C2
C4 C6
C12
C14
C217
C218
L3
W1
C701
C702
C703
C704
C705
W2
R23
R319
R320
R321
R322
R323 R324
R423 R424
W87
W88
W100
W103
W67
W68
W73
W65
W95
W93
W78
W64
W55
W57
W59
W62
W101
W102
W104
W69
W51
W42
W54
W56
W58
W61
W41
W44
W43
W86
W76
W77
W45
W36
W75
W94
W80
W106
W79
W49
W47
W70
W40
W81
W39
W37
W38
W82
W99
W71
W84
W83
W50
W72
W66
W53
W35
W60
W48
W105
W85
W92
W97
W91
W74
W46
W89
W63
W52
W98
W90
BE
BE
BE
EB EB
BE
BE BE
BE
EB
E
BEBEB E
B
W232
W310
W241
R703
R701
R704
C214 C216
C3
C5
C7
C10 C11
C207
C208
C209
C210
C211
C212
C301
C302
C303
C304
C305
C306
C307 C308
C407
C706
R1
R2
R3
R4
R5
W906
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17 SDG SDG SDG SDG
R18
R19
R20
R21
R22
R24 R25
R26
EB
W286
R213
R214
R215
R216
R217
R218
R219
R220
W291
W305
R301
R302
R303
R304
R305
R306
R307
R308
R309
R310
R311
R312
R313
R314
R315
R316
R317
R318
R702
R705
R706
R707
R708
R709
R710
R711
R712
R713
R714
R715
R716
R717
R718
R719
R720
R721
111
122
R722
R723
R724
R725
R726
TH1
W236
W250
W235
W312
R28
W259
W277
W244
W238
W308
W260
W242
W293
W292
W272
W309
W269
W268
W270
81
W313
R727
W262
W299
W276
W301
W302
W300
W297
W298
W306
W294
W307
W280
W281
W287
W283
W284
W295
W304
W285
W303
W296
W278
W279
W273
W274
W289 W288
W290 W282
W275
W267
W23
3
W237
W231
W249
W239
W256
W248 W245
W247
W243
W266
W264
W234
W265
W240
W263
W258
W271
W252
W251
W257
W255
W261
W254
W246
W253
R331
R332
W31
18
169 14
58
7
28
BE
BE
BE
BE
BE
BE
BE BE
BE BE
BE
BE
BE
EB
J4
D7
Q309
Q310
Q313
Q314
Q701
Q11
D1
J3
D6
P1
Q7
Q8
Q9
Q10
Q301
Q302
Q304
Q305
Q306
Q307
Q308
Q311
Q312
CN33
CN1
WH5
Q303
D709
D2
D3
D4
D5
D8
D301
D302
D303
D304
D701
D702
D703
D704
D705
D706
D707
D708
D710
D713
Q1
Q2
Q3
Q4
Q5Q6
Q702
Q703
Q704
Q705
Q706
Q707
Q708
IC4
IC5
PC BOARD (FOIL SIDE VIEW)

5
KAC-8404
JIHGF
1
2
3
4
5
6
7
C17 C15
C100
C103
C104
C117
C118
C123
C124
C125
C126
C203
C204
C223
C224
C225
C226
W31
R419
R420
R421
EBEBEBEB
BE
R422
R424
W8
W9
W27
W14
W7
W6
W29
W16
W30
W12
W13
W17
W11
W15
W19
W20
W21
W22
W10
W4
W5
W33
W32
W28
W18
W35
W34
W3
W23
W24
W25
W26
EB
BE
BE
BE
EB
EB
EB
EB
EB
W232
R27
C113
C114
C213
C115
C116
C215
C101
C102
C105
C106
C107
C108
C109
C110
C111
C112
C122
C201
C202
C205
C206
C222
C401
C402
C403
C404
C405
C406
C408
W203
EB EB
R100
R101
R102
R103
R104
R105
R106
R107
R108
R109
R110
R111
R112
R113
R114
R115
R116
R117
R118
R119
R120
W202
W209
W219
R125 R126
R127
R128
R129
R130
R201
R202
R203
R204
R205
R206
R207
R208
R209
R210
R211
R212
R225 R226
R227
R228
R229
R230
R401
R402
R403
R404
R405
R406
R407
R408
R409
R410
R411
R412
R413
R414
R415
R416
R417
R418
6
W212
W235
W222
W201
W205
W207
W221
W211
W204
W220
W226
W224
W213
W223
17
28
W210
W214
W216
W215
W233
W231 W225
W227
W228
W234
W206
W208
R431
W229
W217
W218
R432
W230
1
17
28 4
58
14
58
14
58
J4
Q12
Q409
Q410
Q413
Q414
1
J1
J2
Q401
Q402
Q403
Q404
Q405
Q406
Q407
Q408
Q411
Q412
CN1
CN44
D101
D201
D102
D202
D9
D103
D203
D401
D402
D403
D404
D711
D712
IC1
IC2
IC3
X09-8740-10
Ref. No. Address
IC1 6G
IC2 5G
IC3 6F
IC4 6E
IC5 6B
Q1 6B
Q2 6A
Q3 6A
Q4 6A
Q5 6B
Q6 6A
Q7 5B
Q8 4B
Q9 6B
Q10 5B
Q11 2E
Q12 2F
Q301 3B
Q302 2D
Q303 3C
Q304 2C
Q305 2B
Q306 2E
Q307 3B
Q308 2C
Q309 2B
Q310 2D
Q311 3B
Q312 2C
Q313 2B
Q314 2D
Q401 3G
Q402 4G
Q403 3G
Q404 4G
Q405 2G
Q406 4G
Q407 3G
Q408 4G
Q409 2G
Q410 5G
Q411 3G
Q412 4G
Q413 2G
Q414 5G
Q701 5D
Q702 6C
Q703 6C
Q704 5C
Q705 5C
Q706 6C
Q707 5C
Q708 5C
Refer to the schematic diagram for the values of resistors and capacitors.

6
KAC-8404
KLMNO
1
2
3
4
5
6
7
PREAMPLIFIER UNIT X08-4430-10 B/2 (J76-0468-02)
VR5
VR6 VR7
VR8
C706
R337
C6
C5
C301 C302
C309
C310
C319
C401
C402
C409
C410
C704
C707 C708
C710
C711
A-R
B-L
A-L
2
1
B-R
W86
W122
W104
W80
W78
W96
W103
W73
W82 W72
W83
W68
W107
W65
W63
W62
W75
W114
W116
W44
W19
W109
W60
W76
W77
W115
W69
W64
W88
W111
W101
W110
W105
W98
W87
W74
W70
C714
W89
W97
W99
W85
W95
W90
W93
W100
W81
W84
W94
W92
W91
W112
W117
W102
W61
W71
W66
W67
W120
W106
W108
W119
W118
W121
EB
BE
BE
BE
EB
EB EB
BE
BE BE
BE
BE
W265
C323
R344
C3
R342
R736
C713
R311 R312
R411 R412
R723
R728
C4
R708
R711
R719
C303
C304
C305
C306
C307
C308
C311
C312
C313 C314
C315 C316
C317
C318
C403
C404
C405
C406
C407
C408
C411
C412
C413 C414
C415 C416
C417 C418
C701
C702
C703
C705
C709
C712
R343
R301
R302
R303
R304
R305
R306
R307
R308
R309
R310
R313 R314
R315
R316
R317 R318
R319
R320
R321
R322
R323
R324
R325 R326
R327
R328
R329 R330
R333
R334
W935
W936
R401
R402
R403
R404
R405
R406
R407
R408
R409
R410
R413 R414
R415
R416
R417 R418
R419 R420
R421
R422
R423
R424
R425 R426
R427
R428
R429 R430
R433
R434
W945
W946
R701
R702
R703
R704
R705
R706
R707
R709 R710
R712
R713
R714
R715 R716
R717
R718
R720
R721
R722
R724
R725
R726
R727
R729
R730
C322
R338
R339
R341
R437
C423
R443
R441
R438
W264
C422
R735
R734
W276
R733
W250
W263
W275
711
8
111
82212
W271
C901
W270
W262
C903
W267
C902
W273
W254
R442
R444
R732
R731
W252
W258
W248
W261
W260
W251
W253
W257
W256
W255
W259
1
1
2
7
28
W272
W274
C904
C906 C908
C905 C907
58
41
BE BE
BE
BE BE
BE
BE
BE
BE BE
BE
EB
BEBE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE BE
BEBE
BE
BEBE
IC10
Q309
Q310
Q311
Q312
Q313
Q314
Q409
Q410
Q411
Q412
Q413
Q414
Q710
CN22
CN3
CN6
CN7
CN4
CN5
Q709
D301
D302
D303 D304
D305 D306
D401 D402
D403 D404 D405
D406
D701
D702
D703
D704
D705
Q301
Q302
Q303
Q304
Q305
Q306
Q307
Q308
Q401
Q402
Q403
Q404
Q405
Q406
Q407
Q408
Q701 Q702
Q703
Q704
Q705
Q706
Q707
Q708
Q315 Q316
Q415
Q416
X08-4430-10 B/2
Ref. No. Address
IC10 6N
Q301 5M
Q302 4L
Q303 5L
Q304 4L
Q305 5L
Q306 4L
Q307 5L
Q308 4L
Q309 5L
Q310 4L
Q311 5M
Q312 4L
Q313 5L
Q314 4L
Q315 5M
Q316 4M
Q401 5M
Q402 4M
Q403 5M
Q404 4M
Q405 5N
Q406 4N
Q407 5N
Q408 4N
Q409 5N
Q410 4N
Q411 5N
Q412 4N
Q413 5N
Q414 4M
Q415 5M
Q416 4M
Q701 6K
Q702 6K
Q703 6K
Q704 6L
Q705 6L
Q706 6M
Q707 6L
Q708 6M
Q709 6L
Q710 6M
PC BOARD (FOIL SIDE VIEW)
Refer to the schematic diagram for the values of resistors and capacitors.

7
KAC-8404
TSRQP
1
2
3
4
5
6
7
PREAMPLIFIER UNIT X08-4430-10 A/2 (J76-0468-02)
200mV 5V
A-SENS
5V 200mV
L/OFF/HST/MONO
OFF/ON
B.B
ST/MONO L/OFF/H
50Hz 200Hz
AFBF
B-SENS
200Hz 50Hz
C111
C112
C113
C114
C119
C211
C212
C221
C222
C223
C224
C225
C226
C229
W11
W8
W38
W4
W3
W20
W51
W10
W2
W1
W41
W47
W34
W43
W50
W46
W52
W55
W48 W49
W53
W56
W39
W36
W54
W30
W57
W59
W29
W23
W28
W35
W31
W25
W15
W27
W22
W18
W17
W9
W58
W37
W7
W13
W6
W12
W42
W45
W21
W33
W26
82
71
W32
W5
W14
VR1
VR2
VR3VR4
W225
W233
W204
W203
28
17
W210
W249
W242
C101
C109
C110
C116
C202
C205
C208
C217
C219
C102
C107
C108
C117
C201
C206
C207
C218
C220
C103
C104
C105
C106
C115
C118
C203
C204
C209
C210
C213 C214
C215
C216
C227
C228
R101
R102
R103
R104
R105
R106
R107
R108
R109
R110
R111
R112
R113
R114
R115
R116
R117
R118
R119
R120 R121
R122
R123
W901
W902
R203
R204
R205
R206
R207
R208
R209
R210
R211
R212
R213
R214
W236
R219
R220
R221
R222
R223
R224
R225
R226
R227
R228
R231
R232
R233
R234
R235
R236 R237
R238
R239
R240 R241
R242
R243
W221
W230
W215
W241
W219
W228
W232
W209
W238
W207
W220
W208
W211
W212
C1
C2
W214
W213
W231
W229
W224
W223
W246
W240 W245
W235
W244
W222
W226
W217
W243
W216
W268
W234
W269
W239
W227
W277
W205
W206
W202
W218
W237
W201
W247
W278
W279
W280
W281
W282
14
58
14
58
14
58
14
58
14
58
14
58
14
58
14
58
14
58
IC1
IC2
IC3
IC4
IC5
IC6
IC7
IC8IC9
CN2
CN11
S2
S3 S4 S5
S6
X08-4430-10 A/2
Ref. No. Address
IC1 5S
IC2 4S
IC3 3S
IC4 2R
IC5 2S
IC6 2R
IC7 2R
IC8 2Q
IC9 2Q
PC BOARD (FOIL SIDE VIEW)
Refer to the schematic diagram for the values of resistors and capacitors.

8
KAC-8404
X09-8740-10 (1/2)
ABCDE
1
2
3
4
5
6
7
+15.0V
-15.0V
(X09-8740-10)
A
B
D102
(1/2)
IC1
D101
(2/2)
IC1
D203
J2
IC2
(1/2)
(2/2)
IC2
D713
D712
Q707
Q708
D5,101,201,711,712
J1
A
B
RL
LR
D103
LM1MA142WA-G
LM1MA142WK-G
UDZS10BD704
D710
D708,709
:
:
:
B30-1743-05
B30-1770-05
D102,202,303,304,403,
D702
D701
D103,203
404
:
:
:
:
D8,9
D7
D6
:
:
:
:
UDZS15B
UDZS6.8B
UMZ6.8N
UDZS16B
FRH10A20
FCH10A20
D202
IC3
(2/2)
Q305,306,405,406
2SB1241Q701
703,705-707,713
D2-4,301,302,401,402,
Q702-704,706,708
D1
:
:
Q705,707 :
:
:
1SS355
RM4ZLF-J4NF
2SA1576A(R,S)
2SC4081
Q313,314,413,414
Q311,312,411,412
Q309,310,409,410
Q307,308,407,408
:
:
:
:
:
2SA817A-F
2SA1695NF
2SC4468NF
2SC1627A-F
2SA992-A(F,E)
2SC1845-A(F,E)
2SC4097Q3,4
Q303,304,403,404
Q301,302,401,402
:
:
Q7-10
Q5,6
Q12
Q11
:
:
:
:
:
2SC3419(Y)-F
2SB1375-F
2SD2012-F
STP60NF06FP
2SA1577
TL494IDR
BA4560RFIC1-4
Q1,2
IC5
:
:
:
DTA114EUA
D201
IC3
(1/2)
IC4
(2/2)
D711
(1/2)
IC4
Q402
Q401
Q302
Q301
CN1 CN33
X08-A/2-
CN11 1/2
X08-B/2-
CN3
SP
LEVEL IN
ISO
AUTO
P-CON DRV
ISO
R125
2.2K
R112
10K
R114
10K
C223
10u50
C225
10u50
C226
10u50
C224
10u50
C124
10u50
C126
10u50
C125
10u50
R108
R110
1000P
R102
1K
C102
C104
10u50
R104
10K
12K
R106
3
4.7K
C106
15P
2
4
1
R107
10K10K
1000P
C101
R101
1K
R103
10K
C103
10u50
R109 12K
6
57 8
BR+
BL+
BL-
BR-
R225
2.2K
100K
R227
R229
100K
R226
2.2K
R230
100K
R228
100K
AR+ AL+ AL- AR-
100K
R126
2.2K
R130
R128
100K
R129
100K
4
2
3
C118
47u25
1
R118 10K
C112 100P
C111 100P
R117 10K
85
6
C117
47u25
7
C706
1000P
R724
10K
R723
100K
2.2K
C704
10u50
R722
C705
10u50
R726
10K
R725
4.7K
C123
10u50
R212
10K
R214
10K
R213
10K
TP100
-REDR-
R127
100K
C204R202
1K 10u50
C206
R206
4.7K
15P
57
4
R210
12K
R208
6
10K
C215
0.01
1000P
C201
R203
10K
R209 12K
R207
10K
R201
1K
C203
10u50
2
31 8
C17
47u25
C16
47u25
R218 10K
4
5
C208
100P
6C218
47u25
7
C212 100P
R217 10K
C211 100P
C207
100P
100u25
C14
100u25
C15
83
2
C217
47u25
1
R432
1.8K
R332
1.8K
R431
1.8K
10K
R111
4.7K
R105
15P
C109
15P
C105
100P
C107
10K
R115
10K
R113
TP103 TP107
TP105
15P
C110
100P
C108
10K
R116
TP106
TP104 TP108
1000P
C100
1K
R100
47K
R120
47K
R119
0.01
C115
0.01
C113
TP203
TP205
TP207
TP204
TP206
TP208
1000P
C202
10K
R204
0.01
C213
10K
R216
15P
C210
47K
R220
15P
C205
4.7K
R205
10K
R211
15P
C209
10K
R215
47K
R219
1.8K
R331
TP213
TP214
TP212
TP211
TP111
TP112
TP113
TP114
TP722
TP723
TP721
ISO-AL
8
ISO-BL
GND
ISO-AR
5672
-15V
NC
ISO-BR
34
+15V
1 3
AL33
AR36
6
AL34
AR35
45
AL31
AL32
12
24
22
21
23
21
23
22
24
11
13
12
14
TP202
TP201
TP102
TP101
0.01
C122
0.01
C222
TP210
TP120
TP110
7
8
TP304
TP302
TP306
TP305
TP301
TP303
D701
Q703
5
4
36 33
32
31
35
34
7 8
4 5
47
46
48
45
42
41
44
43
37
38
35
36
34
33
31
32
0.01
C114
0.01
C116 0.01
C216
0.01
C214
AR-
AL-
AR+
AL+BL+
BL-
BR-
BR+
BL+
BR-
BL-
BR+
AL+
AR-
AL-
AR+
11
13
14
12
+15V
15V
15V
+15V
+15V
15V
+15V
15V
+15V
15V15V
+15V
++
+
+
+
+
+
+
+
+
+
+
+
+
+ +
+
+
+
+
++
CAUTION : For contin-
ued safety, replace safe-
ty critical components
only with manufacturer’s
recommended parts (re-
fer to parts list).
Indicates safety critical
components. To reduce
the risk of electric shock,
leakage-current or re-
sistance measurements
shall be carried out (ex-
posed parts are accept-
ably insulated from the
supply circuit) before the
appliance is returned to
the customer.
• DC voltages are as
measured with a high
impedance voltme-
ter. Values may vary
slightly due to varia-
tions between indi-
vidual instruments or/
and units.

9
KAC-8404
X09-8740-10 (2/2)
JIHGF
1
2
3
4
5
6
7
37.3V)33.6V(MAX
5.0V
14.4V
-33.6V
33.6V
IC5
BC
D
KAC-8404 (1/2)
Q12
D8D9
Q11
D7
D6
Q10 Q8
Q9 Q7
Q408
Q402
D402
Q404
Q412
Q409
Q406
D404
Q401
D403
Q405
Q410
Q414
Q413
Q407
Q308
D302D401
Q403
Q302 Q304
D304
Q306
Q411
Q312
Q3
Q309
Q307
Q305
D303
Q301 Q303
D301
Q310
Q314
Q313
Q311
Q4
Q2
Q6
Q5
Q1
D5
D4
D3
Q706
D710
Q704
D707
D706
Q705
D2
J4
D705
D704
Q703
Q702
D701
D702
D708
D709
P1
D1
J3
CN44 WH5
Q701
D703
1/2
X
08-B/2-
C
N3 X08-B/2- CN4 1/2
CN5
X08-B/2- 1/2
SIGNAL LINE
B LINE
B LINE
GND LINE
DC/DC
CONVERTER
MUTE
DRV.
P-CON
DC/DC CONTROL
47u25 47u25
C13
3300u50
C12
3300u50
100u25
R27
5.6K
C14
100u25
C15
R26
5.6K
C7 10
C11
1500P1/2W
R25
10 C10
1500P
R24
1/2W
10
R23
C9
2200u16
C8
2200u16
L2
R18
4.7K
1500P
R22
56
R20
56
1/2W
R21
56
R17
4.7K
R19
56
1000P
R432
1.8K
R402
100
1.2K
R406
C404
4.7
R412
R420
0.1
2W
1000P 1000P1000P
C406
R408
1.2K
R404
100
R403
100
1.2K
R407
C405
1.2K
R405
C403
R422
0.1
2W
R413
4.7
1000P 1000P
R332
1.8K
R431
1.8K
R401
100
R302
100
C304
R306
1.2K 1.2K
R308
C306
R312
4.7
R310
470
R320
0.1
2W
4.7
R318
1K
R322
0.1
2W
TP718
12
5
1000P1000P
R307
1.2K
C305
R304
100
100
R303
1.2K
R305
C303
100
R301
R321
0.1
2W
R314
R313
4.7
R317
1K
R315
1K
R309
470
R319
0.1
2W
R311
4.7
R14
1.5K
R16
56
R15
56
R12
10K
TH1
TP9
VCC
GND
C1
RT
CT
8
7
6
E1
E2
C2
9
10
11
R715
1.5K
R713
10K
1K
R714
C703
33u35
R712
33K
C6
2.2u50
C4
47u25
R1
10K
OUTCTRL
REF
IN2-
IN2+
1
DTC
FBACK
IN1-
IN1+
4
3
2
16
13
14
15
TP4
TP3
C702
10u50
R711
10K
R710
4.7K
R708
3K
R707
R706
1.5K
C701
10u50
6.8K
2.2K
R721
R727
2.2K
TP701
C307
0.047
R323
10
1/2W
0.047
C308
0.047
C407
C408
0.047
1/2W
R324
10
1/2W
R423
10
R424
10
1/2W
BR+
BR-
BL-
BL+
1
2
3
4
TP760
L3
AR+
AR-
AL-
AL+
P-CON
1
2
3
4
5
GND
BATT
C1
10u50
6
7
TP758 40A
4.7
R414
1K
R418
1K
R416
470
R410
2W
0.1
R419
2W
0.1
R421
4.7
R411
1K
R417
470
R409
1K
R415
1K
R316
C302 0.01
0.01
C402
0.01
C401
TP308
TP322
TP318
TP312
TP316
TP320
TP310
TP314
TP326
TP324
TP307
TP321
TP317
TP311
TP315
TP319
TP309
TP313
TP325
TP323
1.8K
R331
C301 0.01
TP704
TP707
TP706
TP716
TP709
TP713
TP711
TP712
TP715
TP717
TP714
TP705
TP702
Q703
D701
3.9K
R702
33K
R709
3.9K
R703
100
R716
TP708
TP710
TP26
TP25
TP24
TP23
TP22
TP21
TP16
TP15
TP18
TP20
TP19
TP17
TP13
TP14
R13 1.5K
6
BR46
BR47
BR48
78
BL44
BR45
45
BL41
BL42
BL43
12311
GND
+B
12
NC
-B
9103
AL33
AR36
AR37
AR38
678
AL34
AR35
45 4
PRTECTION
DC OFFSET
POP MUTE
A-MUTE
ATT
7856
SW14V
GND
CURRENT
231
1000P
C3
22K
R4 TP7
TP6
TP5
1K
R2
10K
R3
2.2K
R28
0.01
C5
TP8
10K
R9
470
R8
100K
R5
4.7K
R7
R11 1M
6.8K
R10
TP10
9
10
TP759TP2 TP1
TP720
TP719
TP29 TP28 TP27
TP34 TP33 TP35
TP31 TP30 TP32
TP12
TP11
3
04
3
02
TP306
TP305
3
01
TP303
41
45
42
43
44
48
47
46
36 33 35
34
38
37
10u50
C2
8
4
5
6 7
4 5 3
8
OVER
30K
R705
3.9K
R701
3.9K
TP703
R704
47K
R717
47K
R719
47K
R718
47K
R720
4
7
4
6
4
8
4
5
4
2
4
1
4
4
4
3
9
10
3
7
6
+15V
15V
BU
BU
SW14V
SW14V SW14V
+B
BB
+B
B
+B
B
+B
BU
++
++
+ +
+
+
++
+
+
+

10
KAC-8404
X08-4430-10 (1/3)
KLMNO
1
2
3
4
5
6
7
A
(X08-4430-10) (A/2)
IC7
(1/2)
IC6
(1/2)
IC6
(2/2)
IC7
(2/2)
IC5
(1/2)
S3
(2/2)
IC5
S4
IC9
(1/2)
IC8(1/2)
S6
IC8(2/2)
IC9
(2/2)
CN11
S2
IC1
(2/2)
IC1(1/2)
(1/2)
IC3
IC2(1/2)
S5
IC2(2/2)
(2/2)
IC3
IC1-10 : BA4560RF Q301-304,315,316,401-404,
415,416,702-705,707,709
: 2SC4081
Q305-308,405-408,701,706,
708 : 2SA1576A(R,S)
Q309,310,313,314,409,410,
413,414 : 2SC1845-A(F,E)
Q311,312,411,412
: 2SA992-A(F,E)
Q710 : 2SD1863
D301-304,401-404,702,703,
705 : 1SS355
D305,405 : LM1MA142WK-G
D306,406 : LM1MA142WA-G
D701 : UDZS10B
D704 : UDZS12B
1/2
CN1
X09-
SIGNAL LINE
B LINE
B LINE
GND LINE
HPF/OFF/LPF
ST/MONO
HPF/OF
F
B.B
ON/OFF
ST/MONO
FREQ-
UENCY
LPF
HPF
INV
E
S
E
IN
P
LPF
LPF
LPF
HPF
HPF
FREQ-
UENCY
BASS
BOOST
R214 R213
7
R204
2
3
4.3K
10K
R208
10K
1
R210
6
5
TP211
6
5
R211
33K
R212
C210
0.47
33K
TP213
C209
0.47
4
R203
6
C203
100P
R205
2.4K
TP205
4.3K
4
2
31
8
10K
3
4
58 R207
TP209
7
R209
10K
28
TP207
C218
C216
0.047
R224
3K
7R226
10K
R222
10K
C226
R238
22K
10u50
50K(C)
VR3
R228
220
R220
100K
0.33
2.2K
C214
TP217
C212
4.7u50
C211
220
4.7u50
10u50
1
0.01
3
21
8
4
C219
3
C222
10u50
R232 16K
2C224
R236
22K
22K
R234
TP230
TP229
R221
1
R219
100K
TP221
TP227
TP225
10K
R233
7
6
5C223
10u50
5
67
4
810u50
C221
R237
22K22K
R235
22K
C225
10u50
+15V
-15V
ISO-BR
ISO-BL
NC 6
7
8
5
4
GND
ISO-AR
ISO-AL
3
1
2
10K 4
R102
8
6
57
C101
0.01
50K(C)
2
10K
VR1
31
R101
R103 10K
V
10K
R110
C104
10K
0.047
R112
3K
R106
R108
2.2K 0.33
C106
2
4
38
1
3
21
R118
C112
10u35
22K
C114
10u35
TP12
0
R120
15K
86
R111
R107
2.2K 0.33
C105
R105
10K
3K
5
67
5
4
7
R109
C103
10K
0.047
10u35
R117
C113
10u35
22K
R119
100
C115
4700P
C111
0.01
0.01
2
C117
3
C116
1
R113 16K
C108 0.01
C110 0.01
C109 0.01
C107 0.01
TP115
TP116TP114
TP113
TP111TP112
22K
R115
22K
R116
TP108
TP110
TP109
TP107
TP103 TP105
TP101
TP104
TP102
0.01
C102
TP106
10K
R104
TP119 TP117
TP118
1
C1
1
C2
0.01
C201
0.01
C206
0.01
C205
0.01
C202
TP203
0.01
C208
TP23
2
TP23
3
3K
R223
R231 16K
0.33
C213
2.2K
R227
TP215
TP219
C207 0.01
TP204
TP206
TP208
TP210
TP218
TP214
TP212
C204 100P
R206 2.4K
C220 0.01
C217 0.01
0.047
C215
10K
R225
TP228
TP220
TP216
TP222 TP226
0.01
15V
+15V
15V
+15V
16K
R114
+
+
+
+
+
+
+
+
+
+