Kenwood KAC-6403 User manual

© 2006-1 PRINTED IN JAPAN
B53-0378-00 (N)540
POWER AMPLIFIER
KAC-6403
SERVICE MANUAL
Screw washer
(N09-4215-08)
Panel
(A64-3834-02)
Heat sink
(F01-3511-01)
Screw set
(N99-1587-05)
Accessory
(W01-1606-05)
A ch FILTER B ch FILTER INPUT SELECTOR
OFF LPFOFF HPF
1
0.5
0.3
0.2
2
5
34
MIN
V
MAX
LINE IN
INPUT SENSITIVITY
1
0.5
0.3
0.2
2
5
34
MIN MAX
Ach Bch
POWER IN BRIDGED
LEFT
FUSE
BATT. P.CON GND
25A
RIGHT SPEAKER OUT
POWERAMPLIFIER
Fuse (25A)
(F52-0014-05)
Rear panel
(A84-0410-02)
Connecting cord assy
(E30-6144-05)
Screw washer
(N09-6393-08)
This product uses Lead Free solder.
EXPLODED VIEW is on page 5.

KAC-6403
2
BLOCK DIAGRAM
+6dB 0dB +29.5dB
AMPLIFIER
ISOLATION
IC2
AMPLIFIER
ISOLATION
IC2 GAIN
INPUT
VR1
CONT.
J1
R
L
LINE IN A
J2
SPEAKER
INPUT
HPF
80Hz 12dB/OCT
C151,153,R165,167
80Hz 12dB/OCT
HPF
C152,154,R166,168
MUTE
201,202
AMPLIFIER
POWER
119-126
Q103-114,
AMPLIFIER
POWER
J9
SPEAKER
R
OUT A
L
AVR
15V
Q3,4
CONVERTER
L2
DC/DC OVER ROAD PROTECTION DC DETECT &
Q115-118,215-218
CIRCUIT
P.CON
Q605
PROTECTION
THERMAL
TH1
P.CON
BATTERY
IC13
OVER VOLTAGE
PROTECTION
S2
S2
ISOLATION
AMPLIFIER
IC4
IC4
ISOLATION
AMPLIFIER
R
LINE IN B
L
INPUT
VR2
CONT.
GAIN
S1
S1
A-AB
Ach
Bch
Q101,102,
119-126
Q103-114,
IC7
+1
-3dB ATT
-3dB ATT
IC7
+1
IC9
+1
IC9
-1
80Hz 12dB/OCT
LPF+10dB
IC5
S3
S3 S3
S3 IC6
-3dB ATT
+1
-3dB ATT
-1
IC5
AMPLIFIER
POWER R
OUT B
SPEAKER
AMPLIFIER
219-226
Q203-214,
POWER L
219-226
Q203-214,
AUDIO UNIT (X09-8542-70)
COMPONENTS DESCRIPTION
●AUDIO UNIT (X09-8542-70)
Ref. No Application / Function Operation / Condition / Compatibility
IC1 Buffer AMP Amplifies 6dB by decreasing impedance.
IC2 Isolation AMP Decreases common mode noise.
IC3 Buffer AMP Amplifies 6dB by decreasing impedance.
IC4 Isolation AMP Decreases common mode noise.
IC5 LPF B-Rch side is phase inverter.
IC6 -3dB ATT B-Lch side is buffer amplifier.
IC7 Buffer AMP Decreases impedance.
IC9 Phase inverter A-Lch side is buffer amplifier.
IC13 DC/DC converter Oscillates and controls DC/DC converter.
Q3,4 Constant voltage power supply Controls ±15V constant voltage.
Q5,6 DC/DC converter Switching FET.
Q7~10 DC/DC converter Drives Q5’s and Q6’s gates.

KAC-6403
3
Ref. No Application / Function Operation / Condition / Compatibility
Q11,12 DC/DC converter Turns on or off IC13 output.
Q101,102 Input mute Absorbs shook noise when power turns on or off.
Q103~106 Power AMP 1st deferential amplifier.
Q107~110 Power AMP 2nd deferential amplifier.
Q111,112 Power AMP Current mirror load for 2nd deferential amplifier.
Q113,114 Power AMP Compensates bias temperature in power amplifier.
Q115~118 Power AMP Detects over-current.
Q119~122 Power AMP Darlington driver.
Q123~126 Power AMP Darlington output.
Q131,132 ATT signal control Controls signal in attenuator.
Q201,202 Input mute Absorbs shook noise when power turns on or off.
Q203~206 Power AMP 1st deferential amplifier.
Q207~210 Power AMP 2nd deferential amplifier.
Q211,212 Power AMP Current mirror load for 2nd deferential amplifier.
Q213,214 Power AMP Compensates bias temperature in power amplifier.
Q215~218 Power AMP Detects over-current.
Q219~222 Power AMP Darlington driver.
Q223~226 Power AMP Darlington output.
Q231,232 ATT signal control Controls signal in attenuator.
Q601 B-class stage mute Generates mute signal. ON: Normal
Q602 Mute Generates mute signal. OFF: Normal
Q603 Input mute Generates mute signal. OFF: Normal
Q604 Power ON/OFF Controls primary power supply. ON: Normal
Q605 Power ON/OFF Controls power.
Q606 Power ON/OFF Protects from over-voltage. Stops when primary power supply input voltage is below 16V.
Q610 Over-current DET Operates when Q610 detects over-current, and DC/DC converter turns off.
Q611,612 DC output voltage DET Operates when DC output voltage is in power amplifier.
Q613,614 DC output voltage DET Latch circuit for DC to be detected.
Q615,616 B-class stage mute Operates to turn off input of power amplifier.
Q617,618 B-class stage mute Drives Q615 and Q616. ON: Normal
D1 Wrong connection protection Cuts fuse off when connector is connected wrongly.
D2,3 AVR reference voltage Controls Q3 and Q4 with zener voltage.
D4,5 Secondary power supply rectifier
D6~10 Switching Prevents reverse flow.
D32~37 Static electricity protection Prevents OP-AMP to be broken by static electricity.
D101,102 Temperature compensator Stabilizes current between base and emitter of 2nd deferential transistors.
D103,104 Current mirror Current mirror load for 2nd deferential amplifier.
D105,106 B-class stage mute Prevents reverse flow.
D107~111 Over-current DET Prevents reverse flow.
D201,202 Temperature compensator Stabilizes current between base and emitter of 2nd deferential transistors.
COMPONENTS DESCRIPTION

KAC-6403
4
Ref. No Application / Function Operation / Condition / Compatibility
D203,204 Current mirror Current mirror load for 2nd deferential amplifier.
D205,206 B-class stage mute Prevents reverse flow.
D207~211 Over-current DET Prevents reverse flow.
D601 LED control Controls D610’s power indicator.
D602,603 Mute control Prevents reverse flow.
D604 Mute AVR 10V
D605 Power control Prevents reverse flow.
D606 Over-current DET Level shift for primary power supply.
D607 Power control Level shift
D608 Mute control Being controlled by Q602.
D610 LED Being controlled by Q602.
D613,614 DC protection Operates when DC is output.
D616 POP mute
COMPONENTS DESCRIPTION
No. Item Alignment Point Method Align for Note Fig.
Connect a DC voltmeter between
VR5 (A-Lch) the following emitter resistors. PC BOARD
1IDEL CURRENT VR6 (A-Rch) R253 (A-Lch) 2.5mV Over 5 minutes on page 6
VR7 (B-Lch) R254 (A-Rch) aging is required. and 7.
VR8 (B-Rch) R453 (B-Lch)
R454 (B-Rch)
ADJUSTMENT

KAC-6403
6
ABCDE
1
2
3
4
5
6
7
PC BOARD (FOIL SIDEVIEW)
R223
R225 R423 R425
R608
R609
R619
R668
R629
R666 R669
C15
C609
C610
C617
R10
R11
R16 R17
R19
R23
R26
R27
R606
R613
R614
R635
R636
R661
R662
R663
R664
R670
C14
C217
C219
C221
C222
C417
C419
C421
C607
C
R12
R13
R14 R15
R18
R20
R21
R22
R24
R25
R28
R209
R213
R219 R221
R229
AL
R231
R233
R235
R237
R238
R239
R241
R242
R243
R
R249
R251
R252
R413
R419
R421
R429
R431 R433
R435
R43
7
R439 R441
R443
R449
R451
R604
R605
R607
R610
R611 R612
R617
R620
R621
R622
R623
R632
R633
R634
R637
R665
R667
R671
TH1
TP44
W506
W533
W559
W535
W534
W537
W542
W539
W538
W536
R269
W546
W545
W543
W544
W541
W540
W557
W558
W592
W578
W579
916
81
BE
BE
BE BE BE BE
BE
BE
BEBE
BE
BEBE
BE BE
BE
BE
BE
BE
BEBE
EB
BE
BE BE
B
E
BEBEBE
BE
I
D
B
BL
IDL+
AL
IDL+
AL
IDL- AR
IDL+
2200uF
2200uF
W191
C1
W192
C6
C7
C606
R261
C18
R602
R618
C8 C9
C10
C17
C223
C224
C261
C423
C424
C601
C602
C603
3 4
5 6
791011 8
1 2
C608
L2
C12
C13
C16
C211 C411
R7 R8
R9
R245
R247 R248
R253
R255
R256
R257
R258
R445
R447
R453
R455
R457
R458
R603 R615
R616
W203
W202
W26
W85
W88 W86
W87
W80
W78
W79
W104
W128
W124
W101
W103
W105
W118
W133
W83
W120
W112
W106
W107
W108
W126
W102
W130
W135
W93
W119
W125
W129
W134
W94
W163
W902
W167
W170
W169
W168
W159
W157
W160
W162
W161
W156
W155
W153
W152
W151
W141
W154
W158
W166
W165
W92
W84
W91
W89
W90
W131
W121
W116
W113
W146
W137
W117
W123
W96
W109
W110
W111
W145
W122
W144
W143
W149
W148
W147
W175
W100
W138
W115
W114
W127
W132
W98
W97
W136 W139
W99
BL
W196
W198
W140
W189
W190
W188
W187
W176
W182
W177
W180
W179
W181
W183
W184
W185 W172 W150
W164
W186
W178
W142
W194
W195
L3
W201
EB
EB
EB
BE
E
B
EB
EB
BE
GSDGSD
EBB
EB
EEB
EB
Q610
Q7 Q8
D8
D604
D614
D616
Q9 Q10
Q602
Q605 Q606
Q611
Q612 Q613
D6
D7
D9
D101
D103
D105
D107
D109
D110 D111
D201
D203
D207
D
D601
D602
D603
D605
D606
D607
D613
Q11
Q12
Q
Q
Q601
Q603
Q614
Q615
Q616
Q617
Q618
Q
Q131
D608
D4
Q119
Q123
Q219
Q223
D5
Q121 Q122
Q125 Q126
Q604
J9
P1
Q5
Q6
Q107
Q109 Q111
Q113 Q115
Q117 Q118
Q207
Q209
Q211
Q213
Q215
Q217
VR5
VR7
D1
IC13
AUDIO UNIT
X09-8542-70 (J76-0189-01)
DC voltmeter
B-Lch 2.5mV
DC voltmeter
A-Lch
2.5mV

KAC-6403
7
JIHGF
1
2
3
4
5
6
7
X09-8542-70
Ref. No. Address
IC1 4H
IC2 4H
IC3 3H
IC4 3H
IC5 5H
IC6 5H
IC7 6I
IC9 6I
IC13 3D
Q3 6H
Q4 6G
Q5 2C
Q6 2B
Q7 3D
Q8 2D
Q9 3D
Q10 2D
Q11 3D
Q12 2D
Q101 4F
Q102 4F
Q103 4F
Q104 4F
Q105 4F
Q106 4G
Q107 5E
Q108 5G
Q109 5F
Q110 5G
Q111 4F
Q112 4G
Q113 6C
Q114 6G
Q115 6D
Q116 5G
Q117 5B
Q118 5E
Q119 5D
Q120 5F
Q121 5C
Q122 5E
Q123 5D
Q124 5F
Q125 5C
Q126 5E
Refer to the schematic diagram for the values of resistors and capacitors.
Ref. No. Address
Q131 4F
Q132 4G
Q201 4F
Q202 4F
Q203 3F
Q204 3F
Q205 3F
Q206 3G
Q207 3E
Q208 3G
Q209 3F
Q210 3G
Q211 4F
Q212 4G
Q213 2E
Q214 2G
Q215 3D
Q216 3F
Q217 3E
Q218 3H
Q219 3E
Q220 3G
Q221 3F
Q222 3H
Q223 2E
Q224 2G
Q225 2F
Q226 2H
Q231 4F
Q232 3G
Q601 6B
Q602 6B
Q603 5B
Q604 5A
Q605 6A
Q606 6A
Q610 4E
Q611 5E
Q612 5E
Q613 4E
Q614 4E
Q615 3E
Q616 3E
Q617 4D
Q618 3D
R30
C19
C31
C33
C35
C41
R207 R208
R407 R408
R660
R5
R224R226 R424 R426
C32
C34
C36
C42
R659
R6
C101
C102
R100
R103
R104
R107
R108
R113
R114
C128
C324
R31
C117
C118
C203 C204
C317
C318
C351
C403 C404
R115
R116
R153
R155
R156
R165
R166
R167
R168
R179
R180
R203 R204
R205 R206
R300
R315
R316
R319
R320
R355
R356
R367
R373
R379
R380
R403 R404
R405 R406
C105
C106
C107
C108
C109
C110
C150
C151
C152
C153
C154
C218
C220
C259
C260
C301
C302
C305
C306
C307
C308
C309
C310
C352
C353
C417
C418
C420
421
C422
C459
C460
C901 C902
C905 C906
R32
R101
R102
R105
R106
R109
R110
R111
R112
R117
R118
R121 R122
1 2
9
10
R123
R124
R125
R126
R151 R152
R154
R201
R202
R209
R210
R211
R212
R213
R214
R215
R216
R219
R220
R221
R222
R227 R228
R230
AR
R232
R234
R236
8
R240
R244
R250
R265
R266
R301
R302
R303
R304
R305
R306
R307
R308
R309
R310
R311
R312
R313
R314
R317
R318
R321 R322
R323
R324
R325
R326
R357
R358
R359
R361
R362
R374
R401
R402
R409
R410
R411
R412
R413
R414
R415
R416
R419
R420
R421
R422
R427 R428
R430
R432
R433
R434
R436
R437
R438
R440
R
441
R442
R444
R450
R451
R452
R465
R466
W516 W518
W517
W520
W527
W519 W514W513 W515
W510
W504
W522
W501
W503
W523
W511
W508
W507 W505
W512
W502
W521
W509
W531
W526
W532
W593
W524
W525
W529
W533
W530
W528
R33
R34
R35
R467
R468
R267
R268
R469
R470
R269
R270
W560
R365
C20
W556
R601 C21
W554
W552
W555
W547
R328
R327
W549
C44
R181
R182
W571
W570
W573
W572
W590
W574
W591
R366
W575
W581 W576
W580
W577
W578
W579
C43
14
58
58
41
58
41
58
41
58
41
58
41
BE
BE
BE BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE BE
BE
BE
B
E
BE
BE BE BE BE
B
BEBEBE
BE
EB
EB
IDL-
BL BR
IDL- BR
IDL+
AR
IDL-
C2
C3
C616
C100
C4
C5
C207
C208
C300
C407 C408
C903 C904
C907 C908
C103
C104
C111
C112
C113
C114
C115
C116
C159
C160
C201 C202
C205
C206
C211
C212
C213
C214
C215 C216
C303
C304
C311
C312
C313
C314
C315
C316
C355
C356
C401 C402
C405
C406
C411
C412
C413
C414
C415 C416
R246
R254
R446
R447
R448
R454
R455 R456
W18
W5
W32
W68
W34
W35
W29
W11
W28
W7
W8
W22
W21
W15
W16
W4
W36
W24
W13
W19
W17
W9
W30
W31
W20
W3
W14
W38
W47
W33
W10
W2
W39
W1
W12
W43
W66
W70
W61
W57
W81
W85
W71
W62
W82
W58
W88
W54
W67
W63
W86
W87
W42
W41
W27
W25
W37
W45
W48 W44
W59
W55
W40
BR
W64 W56
W60
W65
W75
W83
W6
W73
W72
W76
W69
W77
W197
W84
W53
W52
W51
W49
W46
W50
C357
W199
C22
C155
C156
W200
VR1 VR2
EB EB EB
EB
BE
BE
E
E
EB BEEB
EB
41
85
85
41
BE EB
EB
BE
D34 D36
D35 D37
D32
D2
D3
D610
Q101 Q102
Q201 Q202
D33
D101
D102
D103
D104
D106
D108
1
D201
D202
D203
D204 D205
D206
D208
D209
D210
D211
Q103
Q104
Q105
Q106
Q203
Q204
Q205 Q206
Q231 Q232
Q131
Q132
D10
Q3
Q120
Q124
Q220
Q224
Q4
Q221
Q222
Q225 Q226
J1
J2
Q107
Q108
Q109
Q110
Q111
Q112
Q114
Q116
Q208
Q209
Q210
Q211
Q212
Q214
Q216 Q218
S3 S1
S2
VR6
VR8
IC6
IC1
IC2
IC3
IC4
IC5
IC9 IC7
DC voltmeter
B-Rch 2.5mV
DC voltmeter
A-Rch 2.5mV

KAC-6403
8
ABCDE
1
2
3
4
5
6
7
X09-8542-70 (1/2)
D35
D34
Q4
Q3
D5
D4
Q8
Q6
Q10
Q9
Q5 Q7
D6
Q11
D7
D8
Q12
D2D3
D9
IC1(2/2)
(2/2)
IC2
IC1(1/2) IC2(1/2)
IC4(1/2)
IC4
(2/2)
IC3(1/2)
D37
IC3(2/2)
D36
INPUT
SP
J2
B
LINE IN
LR
LAR
J1
D33
D32
DC/DC CONVERTER
(2/2)
IC9 IC7
(1/2)
S2
IC7 (2/2)
OFF/HPF
(1/2)
IC9
Ach INPUT
SENS.
SENS.
Bch INPUT
S1
A/AB
S3
(2/2)
IC5
OFF/LPF
(2/2)
IC6
(1/2)
IC5
IC6
(1/2)
D10
-3dB
ATT
HPF : 80Hz
12dB/OCT
LPF : 80Hz
12dB/OCT
PHASE INVERTER
AMP
BUFFER
DC/DC
CONVERTE
R
BUFFER
AMP AMP
ISOLATION
AMP
BUFFER ISOLATION
AMP
BUFFER AMP
LPF
AMP
BUFFER
PHASE INVERTER
CONSTANT VOLTAGE
POWER SUPPLY DC/DC CONVERTER
ATT SI
G
CONT
R
TP24
TP25
TP71
TP23
TP72
TP64
TP69
TP73
TP74
TP63 TP65 TP66
TP358 TP359
TP60
TP57
L2
TP356
TP357
TH1
1
2
3
4
5
6
7
8
IN1+
IN1-
FBACK
DTC
CT
RT
GND
C1
IN2
+
IN2
-
RE
F
OUTCTR
L
VC
C
C
2
E
2
E
1
C13
2.2u50V
47u25
C2
100u25
C4
47u25
C3
100u25
C5
2.2K
R5
2.2K
R6
2200u35
C6
2200u35
C7
1/2W
10
R7
1500P
C8
3300u16
+
C10
56
R12
56
R13
4.7K
R10
4.7K
R11
56
R14
1.5K
R16
1.5K
R17
56
R15
10K
R19
10K
R21
330K
R20
10K
R18
0.01
C14
470
R23
1K
R25
4.7K
R26
1000P
C17
R27 22K
10u50
C18
47u25
C16
R22 4.7K
R28
85
67
4.7K
R105 10K
R111
15P
C105
10u50
C103
1000P
C101
10K
R103
10K
R107
R109 12K
C117 100P
R115 10K
15P
C107
R117 10K
C109 100P
47u25
C111
R113 10K
C100 1000P
R100 1K
7
6
85
0.01
C31
C110 100P
R118 10KR110 12K
4.7K
R106
15P
C106
10K
R108
10K
R112
C118 100P
R116 10K
0.01
C32
15P
C108
47u25
C112
R114 10K
1000P
C102
10K
R104
10u50
C104
21
344
3
21
1K
R102
1K
R101
TP67
2
4
8
10
10K
R24
100K
R318 10K
C310 100P
C309 100P
R317 10K
TP120
R302 10u50
1K
C304
1000P
C302
R304
10K
C306
15P
4.7K
TP85
3
R306
2
TP86TP87
4
1
C318 100P
R312
10K
3
1
R316 10K
2
3
C308
15P
TP122
TP121
R310 12K
R309 12K
1000P
R307R308
10K
TP78
10K
C303
10u50R301
1K
C301
R303
10K
TP76
C305
R305
4.7K
15P
6
5
R315 10K
C317 100P
R314 10K
R300 1K
C300 1000P
R313 10K
TP82
TP80
TP79TP77
7
8R311
10K 5
6
C307
15P
C34
0.01
R320 47K
4
1C312
47u25
TP81
R319 47K
C33
0.01
87C311
47u25
BS
BL
AS
AL
AR
BR
R122
100K 10u50
10u50
C115
10u50
C116
C113
10u50
C114
TP30
TP31
100K
100K
R125
R123
TP29
2.2K
R121
100K
R124
R126
2.2K
10
8
4
TP32 2
12
34
56
10
9
78
BR
BS
BL
C324
0.01 C128
0.01
AL
AS
AR
B
+B 14.4V
VR1 10K
R151
10
TP253 5
67
10K
R153
TP250
430
R156
TP249
430
R155
0.1
C153
0.47
C151
1
2
3
22K
R165
27K
R167
8
4
0.01
C43
C44
0.01
10u50
+
C155
C159
10u50
+
R181
47K 47K
R179
0.47
C152 0.1 C154
7
6
5
10u50
+
C160
10u50
+
C156
22K
R166
27K
R168
R180
R182
47K 47K
TP246
TP242
1
24
38
R152
10K
TP251
C150 47P
R154 10K
VR2 10K
TP350
430
R356
TP349 430
R355
5
6710u50
+
C355
68K
R358
68K
R357
33K
R359
0.1
C351
0.047
C353
R361
11K
47K
R373
100K
R380
10K
R328
10K
R327
100K
R379
5
6710u50
+
C357
10K
R365
1K
R366
1
24
38
10K
R362
10u5
+
C35
6
10K
R374
47P
C352
4
283 1
2.2K
R35
5.6K
R34
1K
R30
10u50
C22
+
470K
R33
R32
9.1K 6.2K
R31
C20
0.01
0.01
C21
C9
1500P
R8 10
1/2W
10
R9
1500P
C12
1/2W
0.1
C15
W902
TP35
TP36
R322
2.2K
100K
100K
R324 10u50 C314
10u50
TP33
TP34
R321
2.2K
R325
100K
R326
100K
R323
C315
C316
10u50
10u50
C313
1
3
C19
0.1
TP255
TP353
R367
4.7K
0.01
C42
Q3,4
Q5-12
Q231,232
C36
0.01
0.01
C35
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
++
++
+
+
+
+
+
IC13
AUDIO UNIT (X09-8542-70)
15.0V 15.0V
-15.0V
-15.0V
-15.0V
15.0V
-15.0V
15.0V
2.4V
5.0V
0V
0V
3.6V
14.2V 0V
12V
25.0V
15.0V
-15.0V -25.0V
0V
15.0V
15.0V
-15.0V
0V
0V
-15.0V
-15.0V
15.0V
15.0V
-15.0V
2SA817A-F
2SA992-A
2SC1627A-F
2SC1845-A B
C
E
2SA1576A 2SC3419
B
EC
2SB1375-F
2SD2012-F 2SC4081 DTA114EUA

KAC-6403
9
JIHGF
1
2
3
4
5
6
7
X09-8542-70 (2/2)
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/and units.
Q618
Q615
Q617
Q616
Q106
Q104
Q112
D104
Q102
Q101 D102
Q108 Q110
D101
Q107 Q109
Q103 Q105
D103
Q111
Q116
Q114
Q118
D108
Q120 Q124
D111
D106
D105
Q117
Q121
D110
Q122
D109
Q113 Q115
D107
Q119
Q126
Q125
Q123
Q611
Q610
Q613
Q612
Q614
P1
J9
AL
AR
D614
D616
D1
D613
Q206
Q201
Q202
Q204
Q203 Q205
Q214
Q212
D204
D208
Q216
Q224
Q220
BR
D209
Q208 Q210
D202
D201
Q207 Q209
Q218
D210
D206
D205 D211
Q213Q211
D203
Q217
Q215
D207
Q219
Q222
Q226
Q221
Q225
BL
Q223
D604
Q605
D605
Q602
D610
Q601
D602
D601
D603
Q603
Q604
D606
Q606
D607
GND LINE
SIGNAL LINE
B LINE
B LINE
MUTE
POWER AMP
DC OUTPUT VOLTAGE DET
S2
O
FF/HPF
Q131
Q132
2
/2)
C
6
)
Q231
Q232
D10
D608
-3dB
ATT
INVERTER
M
P
U
FFER
IDLE
(AL)
ADJ
(AR)
ADJ
IDLE
(BL)
IDLE
ADJ
(BR)
IDLE
ADJ
DC/DC
CONVERTER
ATT SIGNAL
CONTROL
ATT SIGNAL
CONTROL
INPUT
MUTE
INPUT
MUTE
B-CLASS
MUTE
STAGE
POWER ON/OFF
OVER-
DET
CURRENT
B-CLASS
STAGE
MUTE
INPUT
MUTE POWER
AMP
POWER
AMP
POWER AMP
AMP
POWER
POWER
AMP
IC1-7,9 : BA4560RF
IC13 : TL494IDR
Q11,12 : DTA114EUA
Q101,102,131,132,201,202,231,232,
601,605,606,610-613,616,618
: 2SC4081
Q103-106,203-206,603,
614,615,617 : 2SA1576A(R,S)
Q107-110,115,116,207-210,215,216
: 2SC1845-A(F,E)
Q111,112,117,118,211,212,217,218
: 2SA992-A(F,E)
Q113,114,213,214 : 2SC3419(Y)-F
Q119,120,219,220 : 2SC1627A-F
Q121,122,221,222 : 2SA817A-F
Q123,124,223,224 : 2SC4467NF
Q125,126,225,226 : 2SA1694NF
D1 : RM4ZLF-J4NF
D2,3 : 02DZ16F-Y
D4 : FCH10A20
D5 : FRH10A20
D6,34,36,105,111,205,211
:LM1MA142WK-G
D7-10,101-104,107-110,201-204,
207-210,601-603,605,608,613,616
: 1SS355
D32,33 : UMZ6.8N
D35,37,106,206 : LM1MA142WA-G
D604,614 : 02DZ10F-Y
D606 : 02DZ15F-Y
D607 : 02DZ6.8F-Y
D610 : B30-1743-05
2SA1577Q9,10 : 2SC4097Q7,8,602 :
2SB1241Q604 :
STP60NF06FPQ5,6 : 2SB1375-FQ4 : 2SD2012-FQ3 :
TP391
TP392
TP390
TP395
TP394
6.8K
R667
TP393
TP361
TP61
TP372
TP360
TP370
TP369
TP371
TP59
TP58
TP365
TP40
TP39
TP364
TP37
TP38
TP397
TP381
TP380
TP396 TP398
TP55
K
16
15
14
13
12
11
10
9
IN2+
IN2-
REF
OUTCTRL
VCC
C2
E2
E1
C1
10u 50
6uH
L3
1/2W
10
R458
0.047
C424
150
R223
150
R225
5.6K
R221
33
R233
470P
C903
1.8K
R229
100
R235
4.7
R245
1.8K
R249
2W
0.1
R253
470
R243
1000P
C219
1000P
C221
R239 5.1KR241 5.1K
1.8K
R251
2W
0.1
R255
0.01
C217
510
R231
6P
C215
47K
R227
3P
C901
47P
C213
100
R237 4.7
R247
8.2K
R207
100K
R203
100
R213
100P
C211
47u25
C207
4700P
C205
820
R211
100
R219
100
R220
10
R261
C261 220u35
+
100K
R204
C204 470P
R206 47K
C203 470P
R205 47K
820
R209
820
R210
820
R212
10u50
C202
100
R214
47u25
C208
+
1.5K
R216
100P
C212
3P
C902
510
R232 47P
C214
47K
R228
6P
C216
0.01
C218
1000P
C222
1000P
C220
5.1K5.1K
R244
4.7
R248
1.8K
R250
4.7
R246
1.8K
R252
2W
0.1
R256
2W
0.1
R254
100
R236
470P
C904
33
R234
1.8K
R230
150
R224
150
R226
5.6K
R222
47P
C260
8.2K
R208
10K
R265
10K
R266
150K
R660
100K
R659
10u50
C616
47P
C259
1.5K
R215
VR6
220
VR5
220
R622 47K
R623 47K
R620 47K
R621 47K
12K
100u10
C606
10K
R629
100u10
C608
6.2K
R635
0.01
C609
R636
2.2K
47K
R632
0.01
C607
12K
R633
C610 0.01
10K
12K
R634
22
R662
22
R661
10K
R664
10K
R663
10K
R668
47K
R671
6.8K
R670
6.8K
R665
10K
R666
33K
R669
6
5
4
3
2
1
8
9
7
10
11 BATT
GND
P CON
BL+
AL+
AL-
BL-
AR-
BR-
AR+
BR+
TP49
TP45
TP50
TP46
TP51
TP47
TP52
TP48
TP368
TP54
TP56
TP53
R238
100
C206
4700P
2.2K
R618
R637
R617
TP374
TP377
R466
10K 10K
TP378
47P
C460
8.2K
R408
R465
820
R412
820
R410
R406 47K
C404 470P
10u50
C402
C408
47u25
R414
+
R416
1.5K
4700P
C406
100
R404
100K
R403
100K
R409
TP375
820
R411
820
TP362
R405 47K
C403 470P
C401
+
10u50
R415
1.5K
R413
100
C405
4700P
47u25
C407
C459
47P
8.2K
R407
TP373
47K
R434
R426
150
R424
150 R422
5.6K
R430
1.8K
C416
6P
220
VR8
C908
470P
33
R436
100
1000P
C420
R444
5.1K
TP367
R446
4.7
R450
1.8K
R454
0.1
2W
TP376
C906
100P
C412
R420
C414
47P
R428
3P
R432
510
100 R419
100
100
R438C418
0.01
5.1K
1000P
C422
R437
100
R433
C415
R421
5.6K
C411
100P
R431
510
C905
3P
47P
C413
47K
R427
6P
R423
150
1.8K
33
R429
VR7
220
R425
150
R439 5.1K
R443
C419
1000P
C417
0.01
R441 5.1K
C421
1000P
100
C907
470P
R435
4.7
TP43
TP42
1.8K
R456
0.1
2W
4.7
R448
R452
0.1
2W
470
R453
TP44
0.1
2W
R455
1.8K
R451
R447
TP366
TP41
R445
4.7
1.8K
R449
C201
10u50
+
3.3K
R614
R613
1.5K
10K
R606
C602
10u50
C601
33u35
R604
10K
R603
100
R607
4.7K
3.9K
R608
33K
R609
R602
820
33K
R605
TP62
R610
30K
3.6K
R611
10u50
C603 3.9K
R615
3.6K
R612
R616
3.9K
TP379
R257
10 1/2W 0.047
C223
R258
10 1/2W 0.047
C224
R457
10 1/2W C423 0.047
+B B
14.4V
R442R440
470
R240 R242
470
47K
R179R180
47K
3.3K
R201
P246
P242
3.3K
R202
10K
R268
10K
R267
6.8K
R269
6.8K
R270
710u50
+
C357 3.3K R401
1
4
810u50
+
C356 3.3K R402
10K
R467
R469
6.8K
10K
6.8K
R470
R468
2.2K
R35
.
6K
R
34
10u50
C22
+
100
R601
0.01
C41
0
.
01
3.9K
R619
0.1
C617
VR5
VR6
VR7
VR8
Q131,132
3
1,232
Q601
Q604-606
Q611-614
Q615-618
Q103-106
Q107-114
Q207-214
Q203-206
Q115-126
Q215-226
F1 (25A) F52-0014-05
+
+
+
+
+
+
+
+
+
+
KAC-6403
5.0V
14.2V
14.2V
0V
12V
5.0V
5.0V
14.4V
25.0V
-25.0V
-15.0V
15.0V
0V

KAC-6403
5
Parts with the exploded numbers larger than 700 are not supplied.
EXPLODED VIEW
3
2
1
BA
X09-854
6
4
9
8
DC1
3
2
701
710
F1
Cx2
D
D
D
D
A
Ax3
Ax3
Ax8
Ax3
Dx2
Dx2
Dx2
Dx2
Dx2
Dx2
D
D
B
Bx3
Fx4
Gx2
Fx4 F
D
A
B
C
D
E
F
G
:
:
:
:
:
:
:
N09-6365-05
N80-3010-43
N83-3006-43
N89-3008-48
N80-3010-43
N09-4215-08
N09-6393-08
φ2.6x13
M4,Ni
M6,Ni
(X09-)
J9
(Insulated sheet is contained
in transistor)
(Insulated sheet is contained
in transistor)
E
E

KAC-6403
10
Indicates safety critical components.
✽New parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
Ref. No. A
d
dN
e
wParts No. Description Desti-
nation Ref. No. A
d
dN
e
wParts No. Description Desti-
nation
E: Europe K : North America M : Other Areas E :Without Europe
PARTS LIST
23A ✽ A64-3834-02 PANEL
32B
✽ A84-0410-02 REAR PANEL
41BB19-2324-03 LIGHTING BOARD
-B46-0682-00 WARRANTY CARD
-
✽ B64-3353-00 INST. MANUAL (ENGLISH) E
-
✽ B64-3353-00 INST. MANUAL (FRE.GER.DUT) E
-
✽ B64-3353-00 INST. MANUAL (ITA.SPA.POR) E
-
✽ B64-3354-00 INST. MANUAL (ENG.T-CHI) M1
DC1 1A E30-6144-05 CONNECTING CORD ASSY
61B
✽ F01-3511-01 HEAT SINK
F1 2B F52-0014-05 FUSE (BLADE TYPE) (25A)
-
✽ H10-4976-03 POLYSTYRENE FOAMED FIXTURE
-H25-1192-04 PROTECTION BAG (370X440)
-H25-1200-04
PROTECTION BAG (250X350X0.03)
- ✽ H54-3676-03 ITEM CARTON CASE M1
-
✽ H54-3677-03 ITEM CARTON CASE E
81AN99-1587-05 SCREW SET
A2A
✽ N09-6365-05 SEMS (TAPTITE SCREW) (2.6X13)
B1BN80-3010-43 PAN HEAD TAPTITE SCREW
C1BN83-3006-43 PAN HEAD TAPTITE SCREW
D3BN89-3008-48
BINDING HEAD TAPTITE SCREW
91AW01-1606-05 ACCESSORY
D610
✽ B30-1743-05 LED (RED LED)
C1 CD04AU1H100M NP ELEC 10UF 50WV
C2,3 CD04BJ1E470M ELECTRO 47UF 25WV
C4,5 CD04BJ1E101M ELECTRO 100UF 25WV
C6,7 CD04AZ1V222M ELECTRO 2200UF 35WV
C8,9 CK45FB1H152K CERAMIC 1500PF K
C10 CD04AY1C332M ELECTRO 3300UF 16WV
C12 CK45FB1H152K CERAMIC 1500PF K
C13 CD04AU1H2R2M NP-ELEC 2.2UF 50WV
C14 CK73GB1H103K CHIP C 0.010UF K
C15 CK73GB1H104K CHIP C 0.10UF K
C16 CD04BJ1E470M ELECTRO 47UF 25WV
C17 CQ93FMG1H102J MYLAR 1000PF J
C18 CD04BJ1H100M ELECTRO 10UF 50WV
C19 CK73GB1H104K CHIP C 0.10UF K
C20,21 CK73GB1H103K CHIP C 0.010UF K
C22 CD04BJ1H100M ELECTRO 10UF 50WV
C31-36 CK73GB1H103K CHIP C 0.010UF K
C41-44 CK73GB1H103K CHIP C 0.010UF K
C100 CK45FB1H102K CERAMIC 1000PF K
C101,102 CK73GB1H102K CHIP C 1000PF K
C103,104 CD04BJ1H100M ELECTRO 10UF 50WV
C105-108 CC73GCH1H150J CHIP C 15PF J
C109,110 CC73GCH1H101J CHIP C 100PF J
C111,112 CD04BJ1E470M ELECTRO 47UF 25WV
C113-116 CD04BJ1H100M ELECTRO 10UF 50WV
C117,118 CC73GCH1H101J CHIP C 100PF J
C128 CK73GB1H103K CHIP C 0.010UF K
C150 CC73GCH1H470J CHIP C 47PF J
C151,152 CK73EB1H474K CHIP C 0.47UF K
C153,154 CK73GB1H104K CHIP C 0.10UF K
C155,156 CD04BJ1H100M ELECTRO 10UF 50WV
C159,160 CD04BJ1H100M ELECTRO 10UF 50WV
C201,202 CD04BJ1H100M ELECTRO 10UF 50WV
C203,204 CC73GCH1H471J CHIP C 470PF J
C205,206 CK45FB1H472K CERAMIC 4700PF K
C207,208 CD04BJ1E470M ELECTRO 47UF 25WV
C211,212 CC45FCH1H101J CERAMIC 100PF J
C213,214 CC45FCH1H470J CERAMIC 47PF J
C215,216 CC45FCH1H060D CERAMIC 6.0PF D
C217,218 CK73GB1H103K CHIP C 0.010UF K
C219-222 CK73GB1H102K CHIP C 1000PF K
C223,224 CQ93FMG1H473J MYLAR 0.047UF J
C259,260 CC73GCH1H470J CHIP C 47PF J
C261 CD04BJ1V221M ELECTRO 220UF 35WV
C300 CK45FB1H102K CERAMIC 1000PF K
C301,302 CK73GB1H102K CHIP C 1000PF K
C303,304 CD04BJ1H100M ELECTRO 10UF 50WV
C305-308 CC73GCH1H150J CHIP C 15PF J
C309,310 CC73GCH1H101J CHIP C 100PF J
C311,312 CD04BJ1E470M ELECTRO 47UF 25WV
C313-316 CD04BJ1H100M ELECTRO 10UF 50WV
C317,318 CC73GCH1H101J CHIP C 100PF J
C324 CK73GB1H103K CHIP C 0.010UF K
C351 CK73GB1H104K CHIP C 0.10UF K
C352 CC73GCH1H470J CHIP C 47PF J
C353 CK73GB1H473K CHIP C 0.047UF K
C355-357 CD04BJ1H100M ELECTRO 10UF 50WV
C401,402 CD04BJ1H100M ELECTRO 10UF 50WV
C403,404 CC73GCH1H471J CHIP C 470PF J
C405,406 CK45FB1H472K CERAMIC 4700PF K
C407,408 CD04BJ1E470M ELECTRO 47UF 25WV
C411,412 CC45FCH1H101J CERAMIC 100PF J
C413,414 CC45FCH1H470J CERAMIC 47PF J
C415,416 CC45FCH1H060D CERAMIC 6.0PF D
C417,418 CK73GB1H103K CHIP C 0.010UF K
C419-422 CK73GB1H102K CHIP C 1000PF K
C423,424 CQ93FMG1H473J MYLAR 0.047UF J
C459,460 CC73GCH1H470J CHIP C 47PF J
C601 CD04BJ1V330M ELECTRO 33UF 35WV
C602,603 CD04BJ1H100M ELECTRO 10UF 50WV
C606 CD04BJ1A101M ELECTRO 100UF 10WV
C607 CK73GB1H103K CHIP C 0.010UF K
C608 CD04BJ1A101M ELECTRO 100UF 10WV
C609,610 CK73GB1H103K CHIP C 0.010UF K
C616 CD04BJ1H100M ELECTRO 10UF 50WV
C617 CK73GB1H104K CHIP C 0.10UF K
C901,902 CC73GCH1H030C CHIP C 3.0PF C
C903,904 CC45FSL1H471J CERAMIC 470PF J
C905,906 CC73GCH1H030C CHIP C 3.0PF C
C907,908 CC45FSL1H471J CERAMIC 470PF J
KAC-6403
AUDIO UNIT (X09-8542-70)
EXPLODED VIEW is on page 5.