Kenwood KAC-7204 User manual

SERVICE MANUAL
This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
© 2008-1 PRINTED IN JAPAN
B53-0612-00 (N)519
KAC-7204
POWER AMPLIFIER
Stereo/Bridgeable
Power Amplifier
BASS BOOST
LEVEL[dB]
LPF
FREQUENCY[Hz]
HPF
FREQUENCY[Hz]
INPUT
SENSITIVITY[V]
[MIN] [MAX]
OFFLPF
FILTER
LINE IN LINE OUT
HPF
SP LEVEL INPUT
SIGNAL SENSING
TURN-ON
FUSE[40A] P.CON
LEFT RIGHT
BRIDGED
POWER IN SPEAKER OUTPUT
Accessories
(W01-1606-05)
Screw & wrench key set
(N99-1820-05)
Connecting cord assy
(E30-6145-05)
19cm
Stereo/Bridgeable Power Amplifier
M type
E,K type
Dressing Panel
(A21-6640-01): (E,K type)
(A21-6641-01): (M type)
Fuse (40A)
(F52-0016-05)

2
KAC-7204
BLOCK DIAGRAM
COMPONENTS DESCRIPTION
Bass
Boost
SP
OUTPUT
ISO-AMP
ISO-AMP
SENS.
VOL
LINE IN
L
R
(0.2~5V)
L
R
LINE OUT
Bass
Boost
MUTEATT
POWER AMP
MUTEATT
BATT.
GND
P-CON
POWER
ON/OFF
LC FILTER
±B
±15V
AVR
DC/DC
CON
FAN
AVR
THERMAL
DET
OVERLOAD
DET
DC-OFFSET
DET
FAN
L
R
(INV)
L.P.F
FREQ
H.P.F
H.P.F
FREQ
(50~200Hz)
FREQ
LPF/OFF/HPF
FREQ
(40Hz)
L+
L-
R-
R+
SIGNAL
DETECTOR
P-CON
PRIORITY
-0.83dB_ATT
+6.85dB_AMP
=6.0dB
-0.5dB_ATT
+16.4dB_AMP
=15.9dB
+15.8dB
40Hz=18dB
40A x1
-0.83dB_ATT
+6.85dB_AMP
=6.0dB
POWER AMP
40Hz=18dB
(50~200Hz)
(50~200Hz)
IC2
IC1
IC7
IC12
IC7
IC8
IC8
IC10
IC11
Q281,283
Q282,284
Q241
Q242
Q201...229
Q202...226
Q215-218,610 Q611,612 TH601,602,605
Q1,2 D5,6
Q50,D50,52 Q605 Q604
IC5
Q609, 699
●AUDIO UNIT (X09-8760-10)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1,2 Isolation circuit
IC5 DC/DC converter
IC6 Temperature ATT control ATT2=on by pin1=H, ATT1=on by pin7=H
IC7 HPF
IC8 Buffer amplifier, Rch inversion amplifier
IC10,11 bass-boost
IC12 LPF
Q1,16 +15V power supply
Q2,17 -15V power supply
Q3~8 DC/DC switching FET
Q9~14 DC/DC switching FET drive Tr
Q15 Temperature ATT reference power supply
Q50,51 auto_pcon_off Disables operation of the auto_pcon circuit when the pcon_ is connected

3
KAC-7204
Ref. No. Application / Function Operation / Condition / Compatibility
Q201~204 Differential first stage amplifier
Q205~208 Differential second stage amplifier
Q209,210 Differential second stage current mirror
Q211,213 Temperature compensation Tr
Q215~218 Current limiter
Q220,222~227,229 Power amplifier final Tr
Q241,242 mute_Tr Mute_on when is ON
Q251~258 Power amplifier driver
Q281,282 ATT2_Tr The signal level becomes -3dB when is ON
Q283,284 ATT1_Tr The signal level becomes -1.5dB when is ON
Q602 Mute control ON when is pcon_off
Q603,698 Power supply for the mute_Tr
Q604 SW14V Power supply for DC/DC_IC
Q605 Pcon control ON by pcon=H
Q606 Over voltage detection Turn off Q605 when over voltage is detected
Q609 Power supply for FAN
Q610 Over current protection
Q611,612 DC protection
Q613,614 Latch circuit for DC protection Hold the protection operation while the DC protection is being operational
Q615,616 Shock noise prevention circuit
Q617,618 Shock noise prevention circuit control
NO. ITEM ALIGNMENT POINT METHOD ALIGN FOR NOTE
1IDLE
CURRENT
VR5 (Lch)
VR6 (Rch)
Connect a DC voltmeter between check land.
Lch: Q223_emitter
↔W148
Rch: Q224_emitter
↔W21
2.5mV after 5minutes from power on
ADJUSTMENT
VR6
VR5
X09-876
Q227
Q223
W148
R245
DC voltmeter
Lch 2.5mV
Q224
Q220
Rch
Lch
+-
W21 R243
DC voltmeter
Rch 2.5mV
-+
COMPONENTS DESCRIPTION

4
KAC-7204
ABCDE
1
2
3
4
5
6
7
R608
C129
R5
R609
R35
R6
R610
R612
R615
R49
R626
R640
C14
C52
C600
C617
R9
R10
R15
R16
R18
R22
R24
R34
R58
R147
R606
R613
R614
TH605
C121
R11
R12
R13
R14
R17
R19
R20
R21
R23
R25
R26
R27
R53
R54
R55
R56
R57
R59
R60
R61
R289
R290
R603
R604
R605
R607
R611
R620 R621
R627
R650
R72
W305 W304
W306
W303
W307
W308
W302
W309
W311
W310
W312
W313
R691
W292
W291
W294 W293
W296
W300
W301
C621
W295
W297
W298
W288
R695
R694
R693
R692
R699
R62
BE
BE
BE
BE
BE
BE BE
BE
BE
BE
BE
BE
BE
BE
18
169
C7
C6
-15V
+15V
BE
+B
-B
SP-GND
SP-R
BATT
4.5V
SW14V
-15V
SP-R
SP-L
TH-GND
SP-L
+B
-B
W331
W332
W428
W151
W154
W427
W13
6
W181
W152
W155
W157
W402
W426
W430
W141
W1
4
W5
L3
W404
W431
W403
W192
W164
W145
W191
W405
W401
W406
W407
W408 W409
W413 W410
W411
W412
W414
W415
W416
W417
W418
W419
W420
W421
W422
W423
W424
W15
W27
C699
W165
W425
W93
W429
W153
1234567
W174
W173
C10
C11
L1
L2
C1
C16
C8
C9
C17
C19
C20
C50
C51
C601
C602
C603
C13
C15
C18
C24
R7 R8
R28 R29
R30
R155
R273
R245
R275
R616
W129
W147
W146
W119
W118
W4
W182
W
W125
W123
W149
W194
W193
W186
W187
W188
W189
W190
W185
W184
W183
W180
W179
W178
W175
W148
W170
W167
W169
W168
W172
W171
W177
W176
W195
W139
W138
W135
W137
W140
W144
W150
W128
W124
W122
W117
W166
W
1
W131
W143
W156
W161
W160
W159
W158
W162
W163
W134
W133
W132
W120
W11
W12
W16
W1
EB
E
21
EB
SDG
SDGSDGSDGSDGSDG
EB
EB
Q698
Q15
Q9
Q12
D9
D600
D604
D609
Q10
Q11
Q51
Q602
Q605
Q606
D8
D10
D606
D607
Q13
Q14
Q50
Q603
P1
D699
D5
Q223
Q227
D6
Q604
D1
D2
J3
Q609
Q3
Q4
Q5
Q6
Q7
Q8
D7
D50
D601
D602
D603
D605
D611
Q211
CN2
IC5
AUDIO UNIT X09-8760-10 (J76-0476-11)
PC BOARD (FOIL SIDE VIEW)
X09-8760-10
Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address
IC1 5H IC8 5G Q2 2F Q7 4B Q12 3C Q17 2F Q203 4H Q208 4H Q215 2H
IC2 5H IC10 6F Q3 5B Q8 3B Q13 3C Q50 5E Q204 4H Q209 3H Q216 5I
IC5 3C IC11 6F Q4 4B Q9 3C Q14 3C Q51 5E Q205 4G Q210 3H Q217 3H
IC6 4F IC12 6H Q5 4B Q10 3B Q15 3C Q201 4H Q206 3H Q211 2D Q218 2H
IC7 5G Q1 2F Q6 4B Q11 3B Q16 2F Q202 4H Q207 4G Q213 3I Q220 5I

5
KAC-7204
Refer to the schematic diagram for the values of resistors and capacitors.
JIHGF
1
2
3
4
5
6
7
W225
C36
C126
C129
C145
C148
R51
R241
R242
R1
R3
R215
R216
R217
R218
R661
C34
C120
C127
C146
C147
R52
R600
R636
R638
R2
R4
R629
R660
R664
R626
R640
C133
C134
C135
C139
C600
C609
C610
C614
C616
C620
R100
R115
R116 R118
R123
R124
R131
R133
R134
R135
R137
R140
R141
R143
R146
R147
R150
R159
R163
R167
R227
R228
R633
R634
R646
R649
R659
R665
R666
R667
R668
TH601
TH602
C101
C102
C105
C106
C107
C108
C113
C114
C117
C118
C121
C124
C125
C128
C130
C131
C132
C137
C138
C141
C205
C206
C219
C220
C221
C222
C227
C228
C607
C613
C149
R50
R103
R104
R105
R106 R107
R108
R109
R168
R111
R112
R113
R114
R117
R119
R120
R121
R122
R125
R126
R127
R128
R129
R130
R132
R136
R138
R139
R142
R144
R145
R148
R149
R151
R152
R153
R154
R156
R157
R158
R160
R161
R162
R165
R201
R205
R206
R207
R208
R209 R210
R223
R224
R225
R226
R229
R230
R231
R232
R237
R238
R239
R240
R249
R250
R251
R260
R263
R264
R265
R266
R280
R281
R283
R285
R286
R287
R290
R422
R423
R71
R602
R617
R618
W321
R624
R625
R628
R630
R631
R632
R635
R639
R643
R647
R648
R651
R652
R653
R656
R658
R662
R663
R914
R915
R916
R72
W277
W255
R74
R73
W275
R696
W322
W200
W201
R169
W328
W270
W266
W202
W204
W211
W245
W223
W203
W205
W226
W218
W241
W252
W260
W250
W246
W234
W235
W227
W237
W228
W231
W269
W276
W272
W283
W287
W253
W323
W208
W207
W206
W216
W209
W214
W213
W212
W210
W219
W229 W217
W215
W273
W258
W254
W256
W267
W232
W233
W224
W221
W325
W236
W230
W238
W299
W244
W243
W249 W248
W239
W240
W242
W247
W280
W257
W265
W263
W268
W314
W259
W274
W281
W278
W261
W262
W324
W271
W279
W284
W286
W288
W315
W317
W318
W220
W282
R698
C232
C230
C233
C231
C698
W326
W320
R171
R170
W327
R110
W285
C150
BE BE
BE BE BE
BE
BE
BE
BE
BE BE
41
58
58
41
58
14 58
14
58
14
14
58
14
58
14
58
EB
SENS. HPF-FLPF-F
MAX
-15V
+15V
OUTIN
E
B
R
SP-L
SP-R
SP-R
+B
-B
+B
SP-R
+15V
-15V
AGND
FAN+B
AMP-IN-L
AMP-IN-R
RL
PIN-G
LPF
SENS
BB
H/OFF/L
HPF
L
10
9
2
1
LRR
LED+B
BB-G
L-NF
-B
+B
BE
L+
L-
W13
W136
W79
W97
W141
W142
W400
W55
W73
W59
W70
W431
C223
W63
W127
W196
R697
W69
W199
W95
W93
W330
C2
W21
C3
C611
C612
C615
C606
R202
C57
C58
C4
C5
C50
C51
C140
C203 C204
C207
C208
C225
C226
C263
C264
C604
C605
C608
C618
C619
R622
W23
R203
R204
W25
C103
C104
C109
C110
C111
C112
C115
C116
C119
C122
C123
C136
C143
C201 C202
C209
C210
C211
C212
C213
C214
C215
C216
C217
C218
W30 W31
W33
W24
R101
R102
R277
R274
R278
R211
R212
R213
R214
R219
R220
R221
R222
R233
R234
R235
R236
R243
R246
R247
R248
R257
R258
R261
R262
R271
R272
R275
R276
R279
R282
W29
W32
W34
R619
W129
W198
7
6
9
8
W115
W26
W104
W121
W53
W125
W37
W123
W28
W38
W42
W114
W56
W58
W65
W67
W66
W72
W75
W62
W60
W90
W64
4
9
W88
W77
W91
W100
4
8
W87
W22
W20
W35
W36
W48
W47
W46
W45
W52
W51
W89
W74
W86
W41
W40
W43
W44
W111
W110
W109
W108
W113
W112
W83
W82
W81
W80
W85
W84
3
9
3
8
W54
W135
W128
W124
W122
W99
W96
W94
W71
W92
W61
W68
W106
W117
W39
W50
W76
W101
W78
W105
W107
W116
W49
W130
W131
4
3
W134
W133
W132
W120
W14
W10
W197
VR1
VR2
VR3
VR4
BE
BE
L
MAX
EB EB
EB
21
E
B
E
B
E
B
BE
BE
BE
BE BE
BE
BE
EB
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BEBE
BE
EB
EB
BE
BE
D101
D102
D3
D4
D608
D609
D614
D104
Q241
Q242
Q281
Q282
Q283
Q284
D52
D229
D253
D254
D255
D295
D296
D617
Q614
Q615
Q616
Q617
Q618
D103
J1 J2
Q699
Q1
Q220 Q224
Q251
Q253
Q256
Q258
Q2
Q222
Q225
Q226
Q229
Q252
Q254
Q255
Q257
Q610
Q609
D615
D624
Q611
Q612
Q613
D152
D203
D204
D205
D206
D251
D261
D
601
D612
D613
D616
Q16
Q17
Q201 Q202
Q203
Q204
Q205
Q206
Q207
Q208
Q209
Q210
Q213
Q215
Q216
Q217
Q218
D610
CN1
S6
D260
IC1
IC2
IC7
IC8
IC10
IC11 IC12
IC6
VR5
VR6
Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address
Q222 2I Q227 2D Q252 3H Q257 2G Q284 4G Q606 6D Q613 3G Q618 4F
Q223 2E Q229 2G Q253 3G Q258 4H Q602 5D Q609 3F Q614 4F Q698 5E
Q224 4I Q241 4G Q254 3H Q281 4G Q603 5D Q610 3G Q615 4G
Q225 2H Q242 4G Q255 2H Q282 4G Q604 5D Q611 4F Q616 4G
Q226 3I Q251 3G Q256 5H Q283 4G Q605 6D Q612 4G Q617 4F

6
KAC-7204
X09-8760-10 (1/3)
ABCDE
1
2
3
4
5
6
7
-15.0V
-13.9V
12.5V
15.0V
15.0V
-15.0V
(X09-8760-10)
D295
D296 Q202
Q210
D261
Q204 Q213
Q282 Q284
Q281 Q283
Q242
Q241
Q201
Q207
Q206
D152
D251
Q205
Q208
D254
D253
Q203
Q209
Q211
D206D204
Q216
Q218
D205
D2
5
Q217
Q215
FAN
CN2
CN1
INPUT
SP
J2
LINE
AR AL
IN
RL
OUT
LINE
D624
D52
D260
D102
D104D103
IC2
(1/2) (2/2)
IC2
J1
D101 IC1
(1/2) (2/2)
IC1
D203
L
Q50
D50
Q51
AUTO P CON
ISO
ATT MUTE
FAN
10
0
C228
1
3
2
R265
TP3
RR280
11K
10K
R285 R286
10K
R915 R916
10K
10K
R287
24K
R914
10u50
47P
C202
10K
R266
10K
30K
R204
22K
R242
10K
R218 R216
150
R240
150
R260
33
4.7K
R220
6.2K
R212
R210
100
R264
1K
C208
C206
4700P
C264
47u25
1.5K
R222
6.2K
C212
220P
220P
470
VR6
10P
C210
R214
22K
R290
100
R226
C218
22P
C214
22P
1.3K
C216
10u50
C227
47P
TP4
TP1
R281
24K
R283
R228
TP9
R206
C204
220P
22K
R227
30K
R205
22K
220P
C203
R201
11K
L
R203
22K
C201
10u50
100100
100u63
R208
1K 1K
R224
R207
1K 1K
R223
C226
470P
470PC223
C225
C207
C205
4700P
C263
47u25
R211
R209
100
R263
1K
220P
C211
220P
1.5K
R221
6.2K
R219
6.2K
R225
C213
22P
C217
22P
1.3K
C215
10u50
470
VR5
10P
R213
22K
C209
R289
100
C
C
2
R234
100
1
0
C222C220
1
0
R236
100
100 R
2
R235
C
221
C
1
0
C
21
9
100P
R105
10K
0.01
GND
+B
1
2
+B 2
GND 1
RR+ 21
RR- 43
RL-
65
87
RL+ 109
100K 10u50
2.2K
R121
C620
0.01
FR+ 2
R217
R241
10K
150
R215
R239
150
4.7K
33
R251
4.7K
100K 10u50
2.2K
R120
FL-
TP12
FR-
TP14 R128 C111
C112
10u50
R129
100K 4
8
TP11
FL+
TP13
10u50
C110
100K
R127
10
C109R122
TP18
1000P
C124
TP6
0.01
TP8
R102
1K
C102
1000P
TP7
C101
R101
1K
R104
C104
10u50
10K
R114
C106
15P
TP17
R106
10K
R103
10K
C103
10u50
C114
15P
R124 10K
C134 100P
7
10
2
8
4
R110
10K
5
4
R112
2
31
R108
12K
TP20 10K
1K
R100
C140
1000P
C132 100P
R126 10K
6
TP22
8
0.01
0.01
C36
C34
C698
TP16
10K
C105
15P
R113
4.7K
TP15 TP21
2
12K
R107
R111
10K
3TP19
1R109 7
R125 10K
6
R123 10K
C133 100P
C113
15P
C131
4
58
100
C
2
R233
10u50
C120
C116
C611
3
R636 18K
10u50
1
2
R153
10u50
C135
20K
C115
R152
20K
TP29
TP51
C50
10K
R691
10u50
2.2K
R50
R58
10u50
C51
10K
0.047
C52
1
2
1
2
FAN+B FAN+B
+
1
+B
+15V
+15V 15V
+15V
+
+B
100
R169
100
R168
100
R170
100
R171
C149
4700P4700P
C150
15V
1
R59 100K
4.7K
R61
10K
R60
1K
R62
TP78
TP79
TP10 TP5 TP2
+
+
+
++
+ +
++
+
+
+
+
+
+
+
+
+
1
1
2
2
2 2
2
3
3
3
3
3
4

7
KAC-7204
JIHGF
X09-8760-10 (2/3)
-13.6V
-13.6V
-47.3V
10.0V
15.0V
+-B=47.3V(BATT=14.4V)
52.6V(BATT=16V)
15.0V
-15.0V
15.0V
10.1V
13.4V
-2.1V
1.7V
5.0V
4.3V 14.2V
ATT2=-1.5dB ATT1=-1.5dB
15.0V
2.8V
2.8V
1.6V
-15.0V
47.3V
-47.3V
47.3V
Q223
D206
Q220
D204
Q256
Q258 Q224
Q216
Q218
Q222
Q225
D205
D255
Q252
Q255
Q254 Q226
Q257
Q217
Q215
Q229
D615
Q615
Q617
Q616
Q618
POP
Q2
D614
Q611
Q610
Q612
Q613
D613
Q614
HPF
(2/2)
(1/2)
D203
Q251
Q253
Q227
HPF 12dB/OCT,F=VR CONT (50-200Hz)
(2/2)
IC7
IC8
INVERTER
Rch : PHASE
(2/2)
HPF/OFF
/LPF
D4
Q17
D3
Q16
Q1
D6
Q4
D5
Q3
IC11
B.B 0+18d
(2/2)
LPF 50-200Hz 24dB/OCT
IC12
(1/2)
IC7
S6
LPF
(2/2)
IC8
INPUT SENS.
(1/2)
IC12
IC10
D603
D699
Q602
D602
D604
D605
Q605
Q609
D608
D617D600
D601
D609
Q603
Q698
Q12 Q14
Q604
Q6 Q8
Q11
Q10
D10
Q7Q5
Q9
IC6
(2/2)
Q13
D612
D616
D7
D9
(1/2)
IC6
D610
Q15
NOISE MUTE
THERMAL
ATT
DC/DC
POWER AMP
LATCH
FAN+B
P-CMUTE
S
2.2
R51
R622
2.2K
100P
2.2C232
R243
2W
C233
R234
100
100P R278
2.2
2.2
C222
1000P
C220
1000P
R230
5.1K
R238
3.6K
100P
3.6K
R232
5.1K
R272 R262
470
R250
R246
0.1
2W
R282
0.1
R248
470
0.1
2W
R276
2.2
R258
0.1
2W
R236
100
100 R202
10
R235
R274
R231
5.1K
C221
1000P
C231
100P
R249
3.6K
R229
C219
1000P
R271 R261
470
5.1K
R237
3.6K
R247 R257
R277
R279
2.2
2.2
0.1
2W
0.1
2W
2W
0.1
R245
470
R155
0.1
2W
C608
100u10
R668 R666
2
R663
10K
47
36K
R660
R664
43K
47K
R667
1
R665
36K
47
R662
10K
R621
47K TP39
R661
TP46
R659
5.6K
TP45
C699
47K
C616
0.1
1u50
R658
43K
10
C607
0.01
R617
R620 47K
C606
100u10
12K
R629
10K
R630
47K
TP40
C613
0.01
C609
0.01
R634
2.2K
TP50
R633
6.2K
C617
0.01
R632
12K
TP49
R635
10K
R631
12K TP44
C610
0.01
R149
C121
0.1
R119
9.1K
TP32
100
C230
R233 R273
2.2
R275
2.2
1
0.22C10810u50 85ISO-L
0.01
C120
8.2K
0.1
R130 4
6710u50
2
C116
R116
47K
TP31
56K 9.1K
C118
R118 R132
GND
R115
47K
13
C126
0.01
TP35
R134
C122
47K
VR1 50K(C)
7 4
5 8 9
6
R131 56K
R133
47K
C147
0.01
4
TP75
C128 15P
R138 62K
5
R136
4
2
3 5
4
R135
430
R137
430
1
7
10K
85
6
C148
0.01
10K
9
7
8
R141
R143
10K
56K
R600 22K
C611
C615
10u50
R636 18K
10u50
C5
47u25
C612
10u50
R638 22K
R72
2.2
C3
47u25
R2
R4
R74
100
C4
47u25
100
10K
R602
R71
R639
C2
47u25
10K
2.2
R3
R73
R1
10
3300u63
R7
10
1/2W
3300u63
1000P
16K C7
R8
10
1/2W
33K
R6
33K
C9
R5
C6
C8
1000P
3900u16
C18
2200P
R12
47
C11
3900u16
R30
10
1/2W
C10
R11
47
16K
L3
R142
C130
0.1
R140
150K
6
5
R147
150K
6
5
TP47
10
0.033
R154 R157
R153
R117 8.2K
10u50 ISO-R
C117C107
0.1 0.22
TP30
C135
0.15
20K
C115
R152
20K
10K
2
3
180K 1
10u50
2
31
C119
TP36
R158
7.5K
C139
R156
TP29
10K C137
3 6
1 5 2 4
VR2 50K(C)
9 8 7
0.033
R160
7 9 8 6
3 2 6
5
6
0.15
R161
100K
9.1K
4
7
810u50
C143
VR3 10K(A)
R139
620
R145
2
31
47K
R163
C145
0.01
C141
R162
7.5K 0.01
C146
R606 R607
10
R692
33u35
C601
R693
10K
C621
0.01
R603 R699
18K
R608
18K
R609
33K
100
R604
10K
C602
10u50
10K 4.7K
C600 0.01
C604
10u50
C605
10u50
R640
R625
620
R619
4.7
1.5K
R627
1K
680
22K
R605
33K
R694
R695
10K
R626
R643 R624
10u50 10u50
R21
10K
R35
10K
C15
47u25
C13
8.2K
R18
4.7K
R55
47
R57
47
R14
47
R10
R54
47
R9
4.7K
R56
47
R13
47
TP71
TP66 R16
1.5K
TP70
R15
1.5K TP68
R646 3K
220K
76
5
TH601
TH602
TH605
C614
0.01
TP73
R648
4.7K
4.3K
R696
200
R19
10K
TP88
100
0
10
u
C
1
C14
R22 100K
0.1
R2
20
K
C1
R17
33K
R34
150
R27
1K
R23
10K
10u50
R20
330K
R26
R25
6.8K
TP83
10u50
C58
C57
R649
8
1
4
3
2
R647
220K
R52
2.2
R652
4.3K
2.7K
R651
4.7K
C24
R656
3.9K
R653
4.3K
R618
4.3K
R53
R650
100K
1K
FAN+B
FAN+B
SW14.1V
SW14.1V
SW14.1V
B14.4V
B14.4V
B14.4V
+15V
+B
B
+15V +15V
+15V -15V +15V -15V
+B
+B
+B
+B
15V 15V
15V
15V
B
B
TP25
TP26
TP27
TP28
TP38
TP37
TP34
TP33 TP41
TP42
TP59
TP62
TRANS
TP80
TP81
TP55
TP58
TP54
TP53
TP82 TP87
30K
R610
TP63
TP64
TP76
TP43
TP57
TP56
T
P
TP
+
+
++
+ + +
+
++
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
1
1 1
3 3
44
4

8
KAC-7204
X09-8760-10 (3/3)
ONMLK
1
2
3
4
5
6
7
10.1V
2.8V
-1.0V
14.2V
3.7V
0V 0V
12V
3.3V
0V
-2.1V
-1.0V
0.1V
0V
4.5V
5.0V
14.2V
5.0V
14.2V
14.2V
IC5
KAC-7204
2SA1376AA(L,K)Q209,210
D102,254,295,296
D10,52,101,253,255
605,610-613,615,616,
260,261,601-603,
D7,50,152,203-206,251,
Q252,254,255,257
Q251,253,256,258
Q222,225,226,229
Q220,223,224,227
D103,104
D609
D608
D607
D606
D604,614
D600,617
D8,9
624,699
D6
D5
D3,4
D1,2
Q609
Q604
Q610-613
Q211,213
UDZS6.8B
B30-1743-05:
UDZS13B
UDZS6.2B
UDZS15B
UDZS10B
B30-1770-05
:
:
:
:
:
:
LM1MA142WA-G
LM1MA142WK-G
:
:
1SS355
1SS133
:
:
FRH10A20
FCH10A20
UDZS16B
1N5406-TSC
:
:
:
:
2SC2235-F:
2SC945AA(Q,P)
2SA965-F
:
2SD1863
2SB1241
:
:
:
2SA1695NF
2SC4468NF
KTC3114-PH(A)
:
:
:
Q50,603,614,615,
Q17,201-204,217,218
281-284,602,605,606,
Q15,51,241,242,
TL494IDR
BA4560RF
IC1,2,6-8,10-12
Q3-8
Q16,215,216
Q205-208
617,698
Q13,14
Q10,11
Q9,12
616,618
Q2
Q1
IC5 :
:
STP60NF06FP:
2SC1845-A(F,E)
2SC3478AA(L,K)
2SA1576A
2SA992-A(F,E)
:
:
:
:
:
DTA114EUA
2SC4081:
2SA1577
2SC4097
:
:
:
2SA1859ANF
2SC4883ANF
:
:
(2/2)
IC11
B.B 0+18dB (VR) F=40Hz
(2/2)
IC11
(1/2)
BOOST
BASS
IC10
IC10
(1/2)
D604
Q606
D605
Q605
D606
D611D607
Q604
D2
D1
P1
SP
OUT
J3
D8
GND LINE
SIGNAL LINE
B LINE
B LINE
P-CON
SW
14V
DC/DC CONTROL
R149
240
0.1
R146
C136
R142
240
0.1
4.7u50
2.2K
R144
4
3
28
1
150K
6
57
150K
6
57
10K
R148
2.2K
C138
100P
R150
47K
VR4 10K(C)
C129 0.01
C127
0.01
C125 100P
R423
1K R
R167 47K
C123
4.7u50
2.2K
R159
10K
R151
TP67
2
R165 2.2K
4
83 1L
1K
R422
R613
1.5K
TP69
C603
10u50
TP72
C19
0.047
C20
0.047
1/2W 1/2W
R616
3.9K TP84
TP85
TP48
21uH
21uH
2
1
W4
W5
C1
10u25
L1
L2
TP74
3 LCH-
2
1
RCH-
RCH+
4
5
LCH+
P-CON
FUSE=40A
BATT 14.4V
6 GND
7
TP91
TP90
IN2+
REF
IN2-
VCC
C2
E2
OUTCTRL
10K
C15
47u25
DTC
1000P
10u50
C16
R24
20K
C17
R49
1
8C1
6
7GND
RT
TP86
5CT
R34
150 R26
100K
R25
6.8K
P
83
IN1-
3
4FBACK
1
2
IN1+
9
E1
10
11
12
13
14
16
15
TP89
B14.4V
+15V
SW14.1V-1
SW14.1V-1
+15V -15V
2
13
5
4 7
8
6
9
15V
10
R28
10
R29
R614 6.8K
R615 3.9K
3.6K
R611
30K
R610
3.6K
R612
TP61
TP60
+
+
+
+
+
1
1
3
3
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 instru-
ments or/and units.
B
C
E
2SA965-F
2SA992-A
2SC1845-A
2SC2235-F
2SA1576A
2SC4081
DTA114EUA

9
KAC-7204
3
2
1
BA
(X09-876)
J1
J2
J3 VR4
VR2
VR1
VR3
F1
Bundled to the
transistor.
Bundled to the
transistor.
714
21
12
6
6
Bx2
1
20
5
D
Ax5
8
10
9
E
E
A
B
C
D
E
F
G
Y
Z
F2.6x13
M4x8
F3x10
F3x6
F3x8
F3x16
F3x10
M6 AU
M4 AU
: N09-6365-05
: N09-6726-05
: N80-3010-43
: N89-3006-43
: N89-3008-48
: N89-3016-48
: N09-6447-05
: N07-0003-08
: N09-4214-08
Gx2
Yx2
Zx5
C
C
C
E
E
3
E
E
E
E
E
E
C
723
Ax8
Ax7
Ex4
Ex2
Ex2
F
715
718
719
16
E
E
702
F
F
715
719
16
E
Ex2
Ex2
F
EXPLODED VIEW
Parts with the exploded numbers larger than 700 are not supplied.

PARTS LIST
Indicates safety critical components.
Ref. No. A
d
d
N
e
wParts No. Description Desti-
nation Ref. No. A
d
d
N
e
wParts No. Description Desti-
nation
✽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.
KAC-7204
10
E1 : KAC-7204 (Europe) K: KAC-7204 (North America)
M1 : KAC-7204 (Other Areas)
1 1B
✽
A21-6640-01 DRESSING PANEL KE1
1 1B
✽
A21-6641-01 DRESSING PANEL M1
3 2B
✽
A64-4421-02 PANEL
5 2B B07-3231-03 ESCUTCHEON
6 1A B07-3232-02 ESCUTCHEON
8 2A B19-2324-03 LIGHTING BOARD
9 2A B19-2468-03 LIGHTING BOARD
10 2A B19-2502-03 LIGHTING BOARD
-
✽
B64-3928-00 INSTRUCTION MANUAL (ENG.FRE.SPA KE1
-
✽
B64-3929-00 INSTRUCTION MANUAL (GE.DU.IT.PO E1
-
✽
B64-3930-00 INSTRUCTION MANUAL (ENG.S-CHI) M1
12 1A E30-6145-05 CONNECTING CORD ASSY
16 3A F09-2974-05 FAN
F1 3B F52-0016-05 FUSE (BLADE TYPE) 40A
-
✽
H54-4231-03 ITEM CARTON CASE KE1
-
✽
H54-4233-03 ITEM CARTON CASE M1
20 1A N99-1820-05 SCREW & WRENCH KEY SET
A 2A N09-6365-05
SEMS (TAPTITE SCREW)(2.6X13)
B 1B N09-6726-05 DRESSED SCREW (M4X8)
C 3B N80-3010-43 PAN HEAD TAPTITE SCREW
D 2A N89-3006-43
BINDING HEAD TAPTITE SCREW
E 3B N89-3008-48
BINDING HEAD TAPTITE SCREW
F 3A N89-3016-48
BINDING HEAD TAPTITE SCREW
Y 2B N07-0003-08 TERMINAL SCREW (M6 AU)
Z 2B N09-4214-08 TERMINAL SCREW (M4 AU)
21 1A W01-1606-05 ACCESSORIES
C1 C90-5557-05 ELECTRO 10UF 25WV
C2-5 CD04BJ1E470M ELECTRO 47UF 25WV
C6,7
✽
C90-5546-05 ELECTRO 3300UF 63WV
C8,9 C91-2293-05 M P F C 1000PF 200WV
C10,11 CD04BC1C392M ELECTRO 3900UF 16WV
C13 C90-5557-05 ELECTRO 10UF 25WV
C14 CK73GB1H104K CHIP C 0.10UF K
C15 CD04BJ1E470M ELECTRO 47UF 25WV
C16 CD04BJ1H100M ELECTRO 10UF 50WV
C17 CQ93FMG1H102J MYLAR 1000PF J
C18 CK45FB1H222K CERAMIC 2200PF K
C19,20 CQ93FMG1H473J MYLAR 0.047UF J
C24 CD04BJ1H100M ELECTRO 10UF 50WV
C34 CK73GB1H103K CHIP C 0.010UF K
C36 CK73GB1H103K CHIP C 0.010UF K
C50,51 CD04BJ1H100M ELECTRO 10UF 50WV
C52 CK73GB1H473K CHIP C 0.047UF K
C57,58 CD04BJ1H100M ELECTRO 10UF 50WV
C101,102 CK73GB1H102K CHIP C 1000PF K
C103,104 CD04BJ1H100M ELECTRO 10UF 50WV
C105,106 CC73GCH1H150J CHIP C 15PF J
C107,108 CK73GB1H104K CHIP C 0.10UF K
C109-112 CD04BJ1H100M ELECTRO 10UF 50WV
AUDIO UNIT (X09-8760-10)
KAC-7204
C113,114 CC73GCH1H150J CHIP C 15PF J
C115,116 CD04BJ1H100M ELECTRO 10UF 50WV
C117,118 CK73FB1H224K CHIP C 0.22UF K
C119 CD04BJ1H100M ELECTRO 10UF 50WV
C120 CK73GB1H103K CHIP C 0.010UF K
C121 CK73GB1H104K CHIP C 0.10UF K
C122 CD04BJ1H100M ELECTRO 10UF 50WV
C123 CD04BJ1H4R7M ELECTRO 4.7UF 50WV
C124 CK73GB1H103K CHIP C 0.010UF K
C125 CC73GCH1H101J CHIP C 100PF J
C126,127 CK73GB1H103K CHIP C 0.010UF K
C128 CC73GCH1H150J CHIP C 15PF J
C129 CK73GB1H103K CHIP C 0.010UF K
C130 CK73GB1H104K CHIP C 0.10UF K
C131-134 CC73GCH1H101J CHIP C 100PF J
C135 CK73FB1E154K CHIP C 0.15UF K
C136 CD04BJ1H4R7M ELECTRO 4.7UF 50WV
C137 CK73GB1H333K CHIP C 0.033UF K
C138 CC73GCH1H101J CHIP C 100PF J
C139 CK73FB1E154K CHIP C 0.15UF K
C140 CQ93FMG1H102J MYLAR 1000PF J
C141 CK73GB1H333K CHIP C 0.033UF K
C143 CD04BJ1H100M ELECTRO 10UF 50WV
C145-148 CK73GB1H103K CHIP C 0.010UF K
C149,150 CK73GB1H472K CHIP C 4700PF K
C201,202 CD04BJ1H100M ELECTRO 10UF 50WV
C203,204 CC45FCH1H221J CERAMIC 220PF J
C205,206 CK73GB1H472K CHIP C 4700PF K
C207,208 CD04BJ1E470M ELECTRO 47UF 25WV
C209,210 CC45FCH1H100D CERAMIC 10PF D
C211,212 CC45FCH1H221J CERAMIC 220PF J
C213,214 CC45FCH1H220J CERAMIC 22PF J
C215,216 CD04BJ1H100M ELECTRO 10UF 50WV
C217,218 CC45FCH1H220J CERAMIC 22PF J
C219-222 CK73GB1H102K CHIP C 1000PF K
C223 CD04BJ1J101M ELECTRO 100UF 63WV
C225,226 CC45FSL1H471J CERAMIC 470PF J
C227,228 CC73GCH1H470J CHIP C 47PF J
C230-233 CC73GCH1H101J CHIP C 100PF J
C263,264 CC45FCH1H221J CERAMIC 220PF J
C600 CK73GB1H103K CHIP C 0.010UF K
C601 CD04BJ1V330M ELECTRO 33UF 35WV
C602-605 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
C611,612 CD04BJ1H100M ELECTRO 10UF 50WV
C613,614 CK73GB1H103K CHIP C 0.010UF K
C615 CD04BJ1H100M ELECTRO 10UF 50WV
C616 CK73GB1H104K CHIP C 0.10UF K
C617 CK73GB1H103K CHIP C 0.010UF K
C620,621 CK73GB1H103K CHIP C 0.010UF K
C698 CK73GB1H103K CHIP C 0.010UF K
C699 CD04BJ1H010M ELECTRO 1.0UF 50WV

PARTS LIST
Indicates safety critical components.
Ref. No. A
d
d
N
e
wParts No. Description Desti-
nation Ref. No. A
d
d
N
e
wParts No. Description Desti-
nation
KAC-7204
11
CN1,2 E41-1682-05 PIN ASSY
J1 E63-0947-05 PIN JACK
J2 E58-1031-05 RECTANGULAR RECEPTACLE
J3 E70-0832-15 SCREW TERMINAL BOARD
L1,2
✽
L33-2444-05 CHOKE COIL 21UH
L3 L19-0771-05
TRANSFORMER FOR CONVERTER
G 2B N09-6447-05 TAPTITE SCREW
R1,2 RK73EB2E100J CHIP R 10 J 1/4W
R3,4
✽
RK73EB2E163J CHIP R 16K J 1/4W
R5,6 RK73EB2E333J CHIP R 33K J 1/4W
R7,8 RD14DB2H100J SMALL-RD 10 J 1/2W
R9,10 RK73GB2A472J CHIP R 4.7K J 1/10W
R11-14 RK73GB2A470J CHIP R 47 J 1/10W
R15,16 RK73GB2A152J CHIP R 1.5K J 1/10W
R17 RK73GB2A333J CHIP R 33K J 1/10W
R18 RK73GB2A822J CHIP R 8.2K J 1/10W
R19 RK73GB2A103J CHIP R 10K J 1/10W
R20 RK73GB2A334J CHIP R 330K J 1/10W
R21 RK73GB2A103J CHIP R 10K J 1/10W
R22 RK73GB2A104J CHIP R 100K J 1/10W
R23 RK73GB2A103J CHIP R 10K J 1/10W
R24 RK73GB2A203J CHIP R 20K J 1/10W
R25 RK73GB2A682J CHIP R 6.8K J 1/10W
R26 RK73GB2A104J CHIP R 100K J 1/10W
R27 RK73GB2A102J CHIP R 1.0K J 1/10W
R28-30 RD14DB2H100J SMALL-RD 10 J 1/2W
R34 RK73GB2A151J CHIP R 150 J 1/10W
R35 RK73GB2A103J CHIP R 10K J 1/10W
R49 RK73GB2A1R0J CHIP R 1.0 J 1/10W
R50 RK73EB2E222J CHIP R 2.2K J 1/4W
R51,52 RK73GB2A2R2J CHIP R 2.2 J 1/10W
R53 RK73GB2A102J CHIP R 1.0K J 1/10W
R54-57 RK73GB2A470J CHIP R 47 J 1/10W
R58 RK73GB2A103J CHIP R 10K J 1/10W
R59 RK73GB2A104J CHIP R 100K J 1/10W
R60 RK73GB2A103J CHIP R 10K J 1/10W
R61 RK73GB2A472J CHIP R 4.7K J 1/10W
R62 RK73GB2A102J CHIP R 1.0K J 1/10W
R71,72 RK73EB2E2R2J CHIP R 2.2 J 1/4W
R73,74 RK73GB2A101J CHIP R 100 J 1/10W
R100 RK73EB2E102J CHIP R 1.0K J 1/4W
R101,102 RD14BB2C102J RD 1.0K J 1/6W
R103-106 RK73GB2A103J CHIP R 10K J 1/10W
R107,108 RK73GB2A123J CHIP R 12K J 1/10W
R109-112
✽
RN73GE1J103D CHIP R 10K D 1/16W
R113,114 RK73GB2A472J CHIP R 4.7K J 1/10W
R115,116 RK73GB2A473J CHIP R 47K J 1/10W
R117 RK73GB2A822J CHIP R 8.2K J 1/10W
R118 RK73GB2A563J CHIP R 56K J 1/10W
R119 RK73GB2A912J CHIP R 9.1K J 1/10W
R120,121 RK73EB2E222J CHIP R 2.2K J 1/4W
R122 RK73EB2E104J CHIP R 100K J 1/4W
R123-126
✽
RN73GE1J103D CHIP R 10K D 1/16W
R127-129 RK73EB2E104J CHIP R 100K J 1/4W
R130 RK73GB2A822J CHIP R 8.2K J 1/10W
R131 RK73GB2A563J CHIP R 56K J 1/10W
R132 RK73GB2A912J CHIP R 9.1K J 1/10W
R133,134 RK73GB2A473J CHIP R 47K J 1/10W
R135 RK73GB2A431J CHIP R 430 J 1/10W
R136 RK73GB2A103J CHIP R 10K J 1/10W
R137 RK73GB2A431J CHIP R 430 J 1/10W
R138 RK73GB2A623J CHIP R 62K J 1/10W
R139 RK73GB2A621J CHIP R 620 J 1/10W
R140 RK73GB2A154J CHIP R 150K J 1/10W
R141 RK73GB2A103J CHIP R 10K J 1/10W
R142 RK73GB2A241J CHIP R 240 J 1/10W
R143 RK73GB2A103J CHIP R 10K J 1/10W
R144 RK73GB2A222J CHIP R 2.2K J 1/10W
R145 RK73GB2A563J CHIP R 56K J 1/10W
R146 RK73GB2A103J CHIP R 10K J 1/10W
R147 RK73GB2A154J CHIP R 150K J 1/10W
R148 RK73GB2A222J CHIP R 2.2K J 1/10W
R149 RK73GB2A241J CHIP R 240 J 1/10W
R150 RK73GB2A473J CHIP R 47K J 1/10W
R151 RK73GB2A222J CHIP R 2.2K J 1/10W
R152,153 RK73GB2A203J CHIP R 20K J 1/10W
R154 RK73GB2A103J CHIP R 10K J 1/10W
R155 R92-0205-05
METAL-PLATE 0.1 K 2W
R156 RK73GB2A103J CHIP R 10K J 1/10W
R157 RK73GB2A184J CHIP R 180K J 1/10W
R158 RK73GB2A752J CHIP R 7.5K J 1/10W
R159 RK73GB2A103J CHIP R 10K J 1/10W
R160 RK73GB2A912J CHIP R 9.1K J 1/10W
R161 RK73GB2A104J CHIP R 100K J 1/10W
R162 RK73GB2A752J CHIP R 7.5K J 1/10W
R163 RK73GB2A473J CHIP R 47K J 1/10W
R165 RK73GB2A222J CHIP R 2.2K J 1/10W
R167 RK73GB2A473J CHIP R 47K J 1/10W
R168-171
✽
RN73GE1J101D MF R 100 D 1/16W
R201 RK73GB2A113J CHIP R 11K J 1/10W
R202 RD14NB2E100J RD 10 J 1/4W
R203,204 RD14BB2C223J RD 22K J 1/6W
R205-208 RK73GB2A102J CHIP R 1.0K J 1/10W
R209,210 RK73GB2A101J CHIP R 100 J 1/10W
R211,212 RD14BB2C102J RD 1.0K J 1/6W
R213,214 RD14BB2C223J RD 22K J 1/6W
R215-218 RK73GB2A151J CHIP R 150 J 1/10W
R219-222 RD14BB2C622J RD 6.2K J 1/6W
R223,224 RK73GB2A101J CHIP R 100 J 1/10W
R225,226 RK73GB2A132J CHIP R 1.3K J 1/10W
R227,228 RK73GB2A223J CHIP R 22K J 1/10W
R229-232 RK73GB2A512J CHIP R 5.1K J 1/10W
R233-236 RD14NB2E101J RD 100 J 1/4W
R237,238 RK73GB2A362J CHIP R 3.6K J 1/10W
R239,240 RK73GB2A472J CHIP R 4.7K J 1/10W
R241,242 RK73GB2A103J CHIP R 10K J 1/10W
R243 R92-0205-05
METAL-PLATE 0.1 K 2W
R245-248 R92-0205-05
METAL-PLATE 0.1 K 2W
AUDIO UNIT (X09-8760-10)
E1 : KAC-7204 (Europe) K: KAC-7204 (North America)
M1 : KAC-7204 (Other Areas)

PARTS LIST
Indicates safety critical components.
Ref. No. A
d
d
N
e
wParts No. Description Desti-
nation Ref. No. A
d
d
N
e
wParts No. Description Desti-
nation
KAC-7204
12
R249,250 RK73GB2A362J CHIP R 3.6K J 1/10W
R251 RK73GB2A330J CHIP R 33 J 1/10W
R257,258 R92-0205-05
METAL-PLATE 0.1 K 2W
R260 RK73GB2A330J CHIP R 33 J 1/10W
R261,262 RD14NB2E471J RD 470 J 1/4W
R263,264 RK73GB2A152J CHIP R 1.5K J 1/10W
R265,266 RK73GB2A103J CHIP R 10K J 1/10W
R271,272 RD14NB2E471J RD 470 J 1/4W
R273-279 RD14NB2E2R2J RD 2.2 J 1/4W
R280 RK73GB2A113J CHIP R 11K J 1/10W
R281 RK73GB2A243J CHIP R 24K J 1/10W
R282 RD14NB2E2R2J RD 2.2 J 1/4W
R283 RK73GB2A303J CHIP R 30K J 1/10W
R285,286 RK73GB2A103J CHIP R 10K J 1/10W
R287 RK73GB2A243J CHIP R 24K J 1/10W
R289,290 RK73GB2A101J CHIP R 100 J 1/10W
R422,423 RK73GB2A102J CHIP R 1.0K J 1/10W
R600 RK73GB2A223J CHIP R 22K J 1/10W
R602 RK73GB2A103J CHIP R 10K J 1/10W
R603 RK73GB2A101J CHIP R 100 J 1/10W
R604 RK73GB2A103J CHIP R 10K J 1/10W
R605 RK73GB2A333J CHIP R 33K J 1/10W
R606 RK73GB2A103J CHIP R 10K J 1/10W
R607 RK73GB2A472J CHIP R 4.7K J 1/10W
R608 RK73EB2E183J CHIP R 18K J 1/4W
R609 RK73GB2A333J CHIP R 33K J 1/10W
R610 RK73GB2A303J CHIP R 30K J 1/10W
R611,612 RK73GB2A362J CHIP R 3.6K J 1/10W
R613 RK73GB2A152J CHIP R 1.5K J 1/10W
R614 RK73GB2A682J CHIP R 6.8K J 1/10W
R615 RK73GB2A392J CHIP R 3.9K J 1/10W
R616 RD14BB2C392J RD 3.9K J 1/6W
R617 RK73GB2A123J CHIP R 12K J 1/10W
R618 RK73GB2A432J CHIP R 4.3K J 1/10W
R619 RD14BB2C4R7J RD 4.7 J 1/6W
R620,621 RK73GB2A473J CHIP R 47K J 1/10W
R622 RD14BB2C222J RD 2.2K J 1/6W
R624 RK73GB2A432J CHIP R 4.3K J 1/10W
R625 RK73EB2E621J CHIP R 620 J 1/4W
R626 RK73GB2A681J CHIP R 680 J 1/10W
R627 RK73GB2A102J CHIP R 1.0K J 1/10W
R629 RK73GB2A103J CHIP R 10K J 1/10W
R630 RK73GB2A473J CHIP R 47K J 1/10W
R631,632 RK73GB2A123J CHIP R 12K J 1/10W
R633 RK73GB2A622J CHIP R 6.2K J 1/10W
R634 RK73GB2A222J CHIP R 2.2K J 1/10W
R635 RK73GB2A103J CHIP R 10K J 1/10W
R636 RK73GB2A183J CHIP R 18K J 1/10W
R638 RK73GB2A223J CHIP R 22K J 1/10W
R639 RK73GB2A103J CHIP R 10K J 1/10W
R640 RK73EB2E152J CHIP R 1.5K J 1/4W
R643 RK73GB2A224J CHIP R 220K J 1/10W
R646 RK73GB2A302J CHIP R 3.0K J 1/10W
R647 RK73GB2A224J CHIP R 220K J 1/10W
R648 RK73GB2A472J CHIP R 4.7K J 1/10W
R649 RK73GB2A272J CHIP R 2.7K J 1/10W
R650 RK73GB2A104J CHIP R 100K J 1/10W
R651 RK73GB2A472J CHIP R 4.7K J 1/10W
R652,653 RK73GB2A432J CHIP R 4.3K J 1/10W
R656 RK73GB2A392J CHIP R 3.9K J 1/10W
R658 RK73GB2A473J CHIP R 47K J 1/10W
R659 RK73GB2A562J CHIP R 5.6K J 1/10W
R660 RK73GB2A473J CHIP R 47K J 1/10W
R661 RK73GB2A433J CHIP R 43K J 1/10W
R662,663 RK73GB2A103J CHIP R 10K J 1/10W
R664 RK73GB2A433J CHIP R 43K J 1/10W
R665,666 RK73GB2A363J CHIP R 36K J 1/10W
R667,668 RK73GB2A470J CHIP R 47 J 1/10W
R691 RK73GB2A103J CHIP R 10K J 1/10W
R692 RK73GB2A100J CHIP R 10 J 1/10W
R693 RK73GB2A103J CHIP R 10K J 1/10W
R694 RK73GB2A223J CHIP R 22K J 1/10W
R695 RK73GB2A103J CHIP R 10K J 1/10W
R696 RK73GB2A201J CHIP R 200 J 1/10W
R699 RK73EB2E183J CHIP R 18K J 1/4W
R914 RK73GB2A303J CHIP R 30K J 1/10W
R915,916 RK73GB2A103J CHIP R 10K J 1/10W
VR1,2 R31-0255-05
VARIABLE RESISTOR 50K, C
VR3 R31-0253-05
VARIABLE RESISTOR 10K, A
VR4 R31-0254-05
VARIABLE RESISTOR 10K, C
VR5 ,6 R32-0151-05 SEMI FIXED VARIABLE R 470
W200 R92-2053-05 CHIP R 0 OHM J 1/8W
W201 RK73GB2A000J CHIP R 0.0 J 1/10W
W202,203 R92-2053-05 CHIP R 0 OHM J 1/8W
W204-217 RK73GB2A000J CHIP R 0.0 J 1/10W
W218 R92-2053-05 CHIP R 0 OHM J 1/8W
W219 RK73GB2A000J CHIP R 0.0 J 1/10W
W220 R92-2053-05 CHIP R 0 OHM J 1/8W
W221 RK73GB2A000J CHIP R 0.0 J 1/10W
W223 RK73GB2A000J CHIP R 0.0 J 1/10W
W224 R92-2053-05 CHIP R 0 OHM J 1/8W
W225-231 RK73GB2A000J CHIP R 0.0 J 1/10W
W232,233 R92-2053-05 CHIP R 0 OHM J 1/8W
W234-237 RK73GB2A000J CHIP R 0.0 J 1/10W
W238 R92-2053-05 CHIP R 0 OHM J 1/8W
W239-242 RK73GB2A000J CHIP R 0.0 J 1/10W
W243,244 R92-2053-05 CHIP R 0 OHM J 1/8W
W245 RK73GB2A000J CHIP R 0.0 J 1/10W
W246 R92-2053-05 CHIP R 0 OHM J 1/8W
W247-250 RK73GB2A000J CHIP R 0.0 J 1/10W
W252 R92-2053-05 CHIP R 0 OHM J 1/8W
W253-257 RK73GB2A000J CHIP R 0.0 J 1/10W
W258 R92-2053-05 CHIP R 0 OHM J 1/8W
W259-263 RK73GB2A000J CHIP R 0.0 J 1/10W
W265-269 RK73GB2A000J CHIP R 0.0 J 1/10W
W270 R92-2053-05 CHIP R 0 OHM J 1/8W
W271-273 RK73GB2A000J CHIP R 0.0 J 1/10W
W274,275 R92-2053-05 CHIP R 0 OHM J 1/8W
W276-282 RK73GB2A000J CHIP R 0.0 J 1/10W
W283 R92-2053-05 CHIP R 0 OHM J 1/8W
AUDIO UNIT (X09-8760-10)
E1 : KAC-7204 (Europe) K: KAC-7204 (North America)
M1 : KAC-7204 (Other Areas)

PARTS LIST
KAC-7204
13
Indicates safety critical components.
Ref. No. A
d
d
N
e
wParts No. Description Desti-
nation Ref. No. A
d
d
N
e
wParts No. Description Desti-
nation
W284-288 RK73GB2A000J CHIP R 0.0 J 1/10W
W291-299 RK73GB2A000J CHIP R 0.0 J 1/10W
W300 R92-2053-05 CHIP R 0 OHM J 1/8W
W301-304 RK73GB2A000J CHIP R 0.0 J 1/10W
W305 R92-2053-05 CHIP R 0 OHM J 1/8W
W306-308 RK73GB2A000J CHIP R 0.0 J 1/10W
W309 R92-2053-05 CHIP R 0 OHM J 1/8W
W310-315 RK73GB2A000J CHIP R 0.0 J 1/10W
W317,318 RK73GB2A000J CHIP R 0.0 J 1/10W
W320,321 RK73GB2A000J CHIP R 0.0 J 1/10W
W322-325 R92-2053-05 CHIP R 0 OHM J 1/8W
W326-328 RK73GB2A000J CHIP R 0.0 J 1/10W
S6 S31-2630-05 SLIDE SWITCH
D1,2 1N5406-TSC DIODE
D3,4 UDZS16B ZENER DIODE
D5 FCH10A20 DIODE
D6 FRH10A20 DIODE
D7 1SS133 DIODE
D8,9 1SS355 DIODE
D10 LM1MA142WK-G DIODE
D50 1SS133 DIODE
D52 LM1MA142WK-G DIODE
D101 LM1MA142WK-G DIODE
D102 LM1MA142WA-G DIODE
D103,104 UDZS6.8B ZENER DIODE
D152 1SS133 DIODE
D203-206 1SS133 DIODE
D251 1SS133 DIODE
D253 LM1MA142WK-G DIODE
D254 LM1MA142WA-G DIODE
D255 LM1MA142WK-G DIODE
D260,261 1SS133 DIODE
D295,296 LM1MA142WA-G DIODE
D600 B30-1770-05 LED
D601-603 1SS133 DIODE
D604 UDZS10B ZENER DIODE
D605 1SS133 DIODE
D606 UDZS15B ZENER DIODE
D607 UDZS6.2B ZENER DIODE
D608 UDZS13B ZENER DIODE
D609 B30-1743-05 LED (RED)
D610-613 1SS133 DIODE
D614 UDZS10B ZENER DIODE
D615,616 1SS133 DIODE
D617 B30-1770-05 LED (BLUE)
D624 1SS133 DIODE
D699 1SS133 DIODE
IC1,2 BA4560RF ANALOGUE IC
IC5 TL494IDR ANALOGUE IC
IC6-8 BA4560RF ANALOGUE IC
IC10-12 BA4560RF ANALOGUE IC
Q1 2SC4883ANF TRANSISTOR
Q2 2SA1859ANF TRANSISTOR
Q3-8 STP60NF06FP FET
Q9 2SC4097 TRANSISTOR
Q10,11 2SA1577 TRANSISTOR
Q12 2SC4097 TRANSISTOR
Q13,14 DTA114EUA DIGITAL TRANSISTOR
Q15 2SC4081 TRANSISTOR
Q16 2SC1845-A (F,E) TRANSISTOR
Q17 2SA992-A (F,E) TRANSISTOR
Q50 2SA1576A TRANSISTOR
Q51 2SC4081 TRANSISTOR
Q201-204 2SA992-A (F,E) TRANSISTOR
Q205-208 2SC3478AA (L,K) TRANSISTOR
Q209,210 2SA1376AA (L,K) TRANSISTOR
Q211
✽
KTC3114-PH (A) TRANSISTOR
Q213
✽
KTC3114-PH (A) TRANSISTOR
Q215,216 2SC1845-A (F,E) TRANSISTOR
Q217,218 2SA992-A (F,E) TRANSISTOR
Q220 2SC4468NF TRANSISTOR
Q222 2SA1695NF TRANSISTOR
Q223,224 2SC4468NF TRANSISTOR
Q225,226 2SA1695NF TRANSISTOR
Q227 2SC4468NF TRANSISTOR
Q229 2SA1695NF TRANSISTOR
Q241,242 2SC4081 TRANSISTOR
Q251 2SC2235-F TRANSISTOR
Q252 2SA965-F TRANSISTOR
Q253 2SC2235-F TRANSISTOR
Q254,255 2SA965-F TRANSISTOR
Q256 2SC2235-F TRANSISTOR
Q257 2SA965-F TRANSISTOR
Q258 2SC2235-F TRANSISTOR
Q281-284 2SC4081 TRANSISTOR
Q602 2SC4081 TRANSISTOR
Q603 2SA1576A TRANSISTOR
Q604 2SB1241 TRANSISTOR
Q605,606 2SC4081 TRANSISTOR
Q609 2SD1863 TRANSISTOR
Q610-613 2SC945AA (Q,P) TRANSISTOR
Q614,615 2SA1576A TRANSISTOR
Q616 2SC4081 TRANSISTOR
Q617 2SA1576A TRANSISTOR
Q618 2SC4081 TRANSISTOR
Q698 2SA1576A TRANSISTOR
TH601,602 NCP18XH103J0S THERMISTOR
TH605 NCP18XH103J0S THERMISTOR
AUDIO UNIT (X09-8760-10)
E1 : KAC-7204 (Europe) K: KAC-7204 (North America)
M1 : KAC-7204 (Other Areas)

KAC-7204
SPECIFICATIONS
KAC-7204 (K, E type)
CEA-2006
Primary Power Output Ratings
(RMS Watts per channel @ 4 ohms, 1 % THD+N)
.......................................................................... 170 W × 2
Signal to Noise Ratio (Reference: 1Watt into 4 ohms)
...............................................................................83 dBA
Audio Section
Max Power Output .................................1000 W (500 W × 2)
Rated Power Output (+B = 14.4 V)
Normal (4 Ω) (20 Hz – 20 kHz, 0.08 % THD)..... 170 W × 2
Normal (4 Ω) (DIN : 45324 , +B = 14.4V)........... 170 W × 2
Normal (2 Ω) (1 kHz, 0.8 % THD)...................... 250 W × 2
Bridged (4 Ω) (1 kHz, 0.8 % THD)..................... 500 W × 1
Frequency Response (+0, –3 dB) .................... 5 Hz – 50 kHz
Sensitivity (rated output).................................... 0.2 V – 5.0 V
Input Impedance ..........................................................10 kΩ
Signal to Noise Ratio..................................................100 dB
Low Pass Filter Frequency (-24 dB/oct.)
........................................................50 – 200 Hz (variable)
High Pass Filter Frequency (-12 dB/oct.)
........................................................50 – 200 Hz (variable)
Bass Boost Circuit (40 Hz) ....................0 – +18 dB (variable)
General
Operating Voltage...................... 14.4 V (11 – 16 V allowable)
Current Consumption..................................................... 40 A
Installation Size (W × H × D)
............350 × 59 × 238 mm (13 3/4 × 2 5/16 × 9 3/8 inch)
Weight ............................................................ 3.2 kg (7.0 lbs)
KENWOOD follows a policy of continuous advancements
in development. For this reason specifications may be
changed without notice.
KAC-7204 (M type)
Audio Section
Max Power Output .................................1000 W (500 W × 2)
Rated Power Output (+B = 14.4 V)
Normal (4 Ω) (20 Hz – 20 kHz, 0.08 % THD)..... 170 W × 2
Normal (2 Ω) (1 kHz, 0.8 % THD)...................... 250 W × 2
Bridged (4 Ω) (1 kHz, 0.8 % THD)..................... 500 W × 1
Frequency Response (+0, –3 dB) .................... 5 Hz – 50 kHz
Sensitivity (rated output).................................... 0.2 V – 5.0 V
Input Impedance ..........................................................10 kΩ
Signal to Noise Ratio..................................................100 dB
Low Pass Filter Frequency (-24 dB/oct.)
........................................................50 – 200 Hz (variable)
High Pass Filter Frequency (-12 dB/oct.)
........................................................50 – 200 Hz (variable)
Bass Boost Circuit (40 Hz) ....................0 – +18 dB (variable)
General
Operating Voltage...................... 14.4 V (11 – 16 V allowable)
Current Consumption..................................................... 40 A
Installation Size (W × H × D)................... 350 × 59 × 238 mm
Weight ..........................................................................3.2 kg
KENWOOD follows a policy of continuous advancements
in development. For this reason specifications may be
changed without notice.
INSTALLATION
350 mm
312 mm
Ø4.6
325.5 mm
212.5 mm
238 mm

KAC-7204
PC BOARD (FOIL SIDE VIEW)
W225
R608
C36
C126
C129
C145
C148
R51
R241
R242
R1
R3
R5
R215
R216
R217
R218
R609
R661
C34
C120
C127
C146
C147
R35
R52
R600
R636
R638
R2
R4
R6
R629
R660
R664
R610
R612
R615
R49
R626
R640
C14
C52
C133
C134
C135
C139
C600
C609
C610
C614
C616
C617
C620
R9
R10
R15
R16
R18
R22
R24
R34
R58
R100
R115
R116 R118
R123
R124
R131
R133
R134
R135
R137
R140
R141
R143
R146
R147
R150
R159
R163
R167
R227
R228
R606
R613
R614
R633
R634
R646
R649
R659
R665
R666
R667
R668
TH601
TH602
TH605
C101
C102
C105
C106
C107
C108
C113
C114
C117
C118
C121
C124
C125
C128
C130
C131
C132
C137
C138
C141
C205
C206
C219
C220
C221
C222
C227
C228
C607
C613
C149
R11
R12
R13
R14
R17
R19
R20
R21
R23
R25
R26
R27
R50
R53
R54
R55
R56
R57
R59
R60
R61
R103
R104
R105
R106 R107
R108
R109
R168
R111
R112
R113
R114
R117
R119
R120
R121
R122
R125
R126
R127
R128
R129
R130
R132
R136
R138
R139
R142
R144
R145
R148
R149
R151
R152
R153
R154
R156
R157
R158
R160
R161
R162
R165
R201
R205
R206
R207
R208
R209 R210
R223
R224
R225
R226
R229
R230
R231
R232
R237
R238
R239
R240
R249
R250
R251
R260
R263
R264
R265
R266
R280
R281
R283
R285
R286
R287
R289
R290
R422
R423
R71
R602
R603
R604
R605
R607
R611
R617
R618
R620 R621
W321
R624
R625
R627
R628
R630
R631
R632
R635
R639
R643
R647
R648
R650
R651
R652
R653
R656
R658
R662
R663
R914
R915
R916
R72
W277
W255
R74
R73
W275
R696
W322
W200
W201
R169
W328
W270
W266
W202
W204
W211
W245
W223
W203
W205
W226
W218
W241
W252
W260
W250
W246
W234
W235
W227
W237
W228
W231
W269
W276
W272
W283
W287
W253
W323
W305 W304
W306
W303
W307
W308
W302
W309
W311
W310
W312
W208
W207
W206
W216
W209
W214
W213
W212
W210
W219
W313
W229 W217
W215
R691
W273
W258
W254
W256
W267
W232
W233
W224
W221
W325
W236
W230
W238
W292
W291
W294 W293
W296
W300
W301
C621
W295
W297
W298
W299
W244
W243
W249 W248
W239
W240
W242
W247
W280
W257
W265
W263
W268
W314
W259
W274
W281
W278
W261
W262
W324
W271
W279
W284
W286
W288
W315
W317
W318
W220
W282
R698
C232
C230
C233
C231
C698
W326
W320
R695
R694
R693
R692
R699
R171
R170
W327
R110
W285
C150
R62
BE
BE
BE
BE
BE
BE BE
BE
BE
BE
BE
BE
BE
BE
BE BE
BE BE BE
BE
BE
BE
BE
BE BE
18
169
41
58
58
41
58
14 58
14
58
14
14
58
14
58
14
58
EB
SENS.
C7
C6
HPF-FLPF-F
MAX
-15V
+15V
OUTIN
BE
E
B
R
SP-L
SP-R
+B
-B
SP-R
+B
-B
+B
SP-R
+15V
-15V
AGND
SP-GND
SP-R
BATT
FAN+B
AMP-IN-L
AMP-IN-R
RL
PIN-G
LPF
SENS
BB
H/OFF/L
HPF
4.5V
SW14V
-15V
L
10
9
2
1
LRR
SP-R
SP-L
TH-GND
LED+B
SP-L
BB-G
L-NF
-B
+B
+B
-B
BE
L+
L-
W13
W331
W332
W428
W151
W154
W427
W136
W181
W79
W152
W155
W157
W402
W426
W430
W97
W141
W142
W5
W400
W55
L3
W73
W404
W59
W70
W431
C223
W63
W403
W127
W196
W192
R697
W164
W145
W191
W405
W401
W69
W406
W407
W408 W409
W413 W410
W411
W412
W414
W415
W416
W417
W418
W419
W420
W421
W422
W423
W424
W199
W15
W27
W95
C699
W165
W425
W93
W429
W330
C2
W153
1234567
W21
W174
W173
C3
C611
C612
C615
C606
R202
C10
C11
L1
L2
C1
C16
C57
C58
C4
C5
C8
C9
C17
C19
C20
C50
C51
C140
C203 C204
C207
C208
C225
C226
C263
C264
C601
C602
C603
C604
C605
C608
C618
C619
R622
W23
R203
R204
W25
C13
C15
C18
C24
C103
C104
C109
C110
C111
C112
C115
C116
C119
C122
C123
C136
C143
C201 C202
C209
C210
C211
C212
C213
C214
C215
C216
C217
C218
W30 W31
W33
W24
R7 R8
R28 R29
R30
R101
R102
R155
R273
R277
R274
R278
R211
R212
R213
R214
R219
R220
R221
R222
R233
R234
R235
R236
R243
R245
R246
R247
R248
R257
R258
R261
R262
R271
R272
R275
R276
R279
R282
W29
W32
W34
R616
R619
W129
W198
W147
W146
W119
W118
W4
W182
W115
W26
W104
W121
W53
W125
W37
W123
W28
W38
W42
W114
W56
W58
W65
W67
W66
W72
W75
W62
W60
W90
W64
W149
W88
W77
W91
W100
W194
W193
W186
W187
W188
W189
W190
W185
W184
W183
W180
W179
W178
W175
W148
W87
W170
W167
W169
W168
W172
W171
W177
W176
W22
W20
W35
W36
W48
W47
W46
W45
W52
W51
W89
W74
W86
W41
W40
W43
W195
W44
W111
W110
W109
W108
W113
W112
W83
W82
W81
W80
W85
W84
W139
W138
W54
W135
W137
W140
W144
W150
W128
W124
W122
W99
W96
W94
W71
W92
W61
W68
W106
W117
W39
W50
W76
W166
W101
W78
W105
W107
W116
W49
W130
W131
W143
W156
W161
W160
W159
W158
W162
W163
W134
W133
W132
W120
W11
W12
W16
W14
W10
W197
VR1
VR2
VR3
VR4
BE
BE
L
MAX
EB
EB EB
EB
21
21
E
B
E
B
E
B
BE
BE
BE
BE BE
BE
BE
EB
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BEBE
BE
EB
EB
SDG
SDGSDGSDGSDGSDG
EB
BE
BE
EB
D101
D102
Q698
Q15
Q9
Q12
D3
D4
D9
D600
D604
D608
D609
D614
D104
Q10
Q11
Q51
Q241
Q242
Q281
Q282
Q283
Q284
Q602
Q605
Q606
D8
D10
D52
D229
D253
D254
D255
D295
D296
D606
D607
D617
Q13
Q14
Q50
Q603
Q614
Q615
Q616
Q617
Q618
D103
J1 J2
P1
Q699
D699
Q1
D5
Q220
Q223
Q224
Q227
Q251
Q253
Q256
Q258
Q2
D6
Q222
Q225
Q226
Q229
Q252
Q254
Q255
Q257
Q610
Q604
D1
D2
J3
Q609
D615
D624
Q3
Q4
Q5
Q6
Q7
Q8
Q611
Q612
Q613
D7
D50
D152
D203
D204
D205
D206
D251
D261
D601
D602
D603
D605
D611
D612
D613
D616
Q16
Q17
Q201 Q202
Q203
Q204
Q205
Q206
Q207
Q208
Q209
Q210
Q211
Q213
Q215
Q216
Q217
Q218
D610
CN1
CN2
S6
D260
IC1
IC2
IC7
IC8
IC10
IC11 IC12
IC5
IC6
AUDIO UNIT X09-8760-10 (J76-0476-11)
VR5
VR6

-13.6V
-13.6V
-47.3V
-15.0V
-13.9V
10.0V
12.5V
15.0V
15.0V
+-B=47.3V(BATT=14.4V)
52.6V(BATT=16V)
-15.0V
-15.0V
15.0V
10.1V
13.4V
2.8V
-1.0V
14.2V
3.7V
0V 0V
12V
3.3V
0V
-2.1V
-1.0V
0.1V
0V
4.5V
5.0V
1.7V
5.0V
4.3V 14.2V
5.0V
14.2V
14.2V
ATT2=-1.5dB ATT1=-1.5dB
15.0V
2.8V
2.8V
1.6V
-15.0V
47.3V
-47.3V
47.3V
IC5
KAC-7204
(X09-8760-10)
2SA1376AA(L,K)Q209,210
D102,254,295,296
D10,52,101,253,255
605,610-613,615,616,
260,261,601-603,
D7,50,152,203-206,251,
Q252,254,255,257
Q251,253,256,258
Q222,225,226,229
Q220,223,224,227
D103,104
D609
D608
D607
D606
D604,614
D600,617
D8,9
624,699
D6
D5
D3,4
D1,2
Q609
Q604
Q610-613
Q211,213
UDZS6.8B
B30-1743-05:
UDZS13B
UDZS6.2B
UDZS15B
UDZS10B
B30-1770-05
:
:
:
:
:
:
LM1MA142WA-G
LM1MA142WK-G
:
:
1SS355
1SS133
:
:
FRH10A20
FCH10A20
UDZS16B
1N5406-TSC
:
:
:
:
2SC2235-F:
2SC945AA(Q,P)
2SA965-F
:
2SD1863
2SB1241
:
:
:
2SA1695NF
2SC4468NF
KTC3114-PH(A)
:
:
:
Q50,603,614,615,
Q17,201-204,217,218
281-284,602,605,606,
Q15,51,241,242,
TL494IDR
BA4560RF
IC1,2,6-8,10-12
Q3-8
Q16,215,216
Q205-208
617,698
Q13,14
Q10,11
Q9,12
616,618
Q2
Q1
IC5 :
:
STP60NF06FP:
2SC1845-A(F,E)
2SC3478AA(L,K)
2SA1576A
2SA992-A(F,E)
:
:
:
:
:
DTA114EUA
2SC4081:
2SA1577
2SC4097
:
:
:
2SA1859ANF
2SC4883ANF
:
:
Q223
D295
D296 Q202
Q210
D261
Q204 Q213
Q282 Q284
Q281 Q283
Q242
Q241
Q201
Q207
Q206
D152
D251
Q205
Q208
D254
D253
Q203
Q209
Q211
D206
Q220
D204
Q256
Q258 Q224
Q216
Q218
Q222
Q225
D205
D255
Q252
Q255
Q254 Q226
Q257
Q217
Q215
Q229
D615
Q615
Q617
Q616
Q618
POP
Q2
D614
Q611
Q610
Q612
Q613
D613
Q614
FAN
CN2
CN1
INPUT
SP
J2
LINE
AR AL
IN
RL
OUT
LINE
D624
D52
D260
D102
D104D103
IC2
(1/2) (2/2)
IC2
J1
D101 IC1
(1/2) (2/2)
IC1
HPF
(2/2)
(1/2)
D203
Q251
Q253
Q227
HPF 12dB/OCT,F=VR CONT (50-200Hz)
(2/2)
IC7
IC8
INVERTER
Rch : PHASE
(2/2)
HPF/OFF
/LPF
D4
Q17
D3
Q16
Q1
D6
Q4
D5
Q3
IC11
B.B 0+18dB (VR) F=40Hz
(2/2)
IC11
(1/2)
LPF 50-200Hz 24dB/OCT
IC12
(1/2)
IC7
S6
LPF
(2/2)
IC8
INPUT SENS.
(1/2)
IC12
BOOST
BASS
IC10
IC10
(1/2)
D603
D699
Q602
D602
D604
Q606
D605
Q605
D606
D611D607
Q609
D608
D617D600
D601
D609
Q603
Q698
Q12 Q14
Q604
D2
D1
P1
SP
OUT
J3
Q6 Q8
Q11
Q10
D10
Q7Q5
Q9
IC6
(2/2)
Q13
D612
D616
D7
D9
D8
(1/2)
IC6
D610
Q15
Q50
D50
Q51
GND LINE
SIGNAL LINE
B LINE
B LINE
NOISE MUTE
AUTO P CON
ISO
THERMAL
ATT
DC/DC
ATT MUTE
POWER AMP
LATCH
FAN+B
P-CONMUTE
SW
14V
DC/DC CONTROL
FAN
2.2
R51
R622
2.2K
100P
C228
1
3
2
R265
TP3
RR280
11K
10K
R285 R286
10K
R915 R916
10K
10K
R287
24K
R914
10u50
47P
C202
10K
R266
10K
30K
R204
22K
R242
10K
R218 R216
150
R240
150
R260
33
4.7K
R220
6.2K
R212
R210
100
R264
1K
C208
C206
4700P
C264
47u25
1.5K
R222
6.2K
C212
220P
220P
470
VR6
10P
C210
R214
22K
R290
100
R226
C218
22P
C214
22P
1.3K
C216
10u50
C227
47P
TP4
TP1
R281
24K
R283
R228
TP9
R206
C204
220P
22K
R227
30K
R205
22K
220P
C203
R201
11K
L
R203
22K
C201
10u50
100100
100u63
R208
1K 1K
R224
R207
1K 1K
R223
C226
470P
470PC223
C225
C207
C205
4700P
C263
47u25
R211
R209
100
R263
1K
220P
C211
220P
1.5K
R221
6.2K
R219
6.2K
R225
C213
22P
C217
22P
1.3K
C215
10u50
470
VR5
10P
R213
22K
C209
R289
100
2.2C232
R243
2W
C233
R234
100
100P R278
2.2
2.2
C222
1000P
C220
1000P
R230
5.1K
R238
3.6K
100P
3.6K
R232
5.1K
R272 R262
470
R250
R246
0.1
2W
R282
0.1
R248
470
0.1
2W
R276
2.2
R258
0.1
2W
R236
100
100 R202
10
R235
R274
R231
5.1K
C221
1000P
C231
100P
R249
3.6K
R229
C219
1000P
R271 R261
470
5.1K
R237
3.6K
R247 R257
R277
R279
2.2
2.2
0.1
2W
0.1
2W
2W
0.1
R245
470
R155
0.1
2W
C608
100u10
R668 R666
2
R663
10K
47
36K
R660
R664
43K
47K
R667
1
R665
36K
47
R662
10K
R621
47K TP39
R661
TP46
R659
5.6K
TP45
C699
47K
C616
0.1
1u50
R658
43K
10
C607
0.01
R617
R620 47K
C606
100u10
12K
R629
10K
R630
47K
TP40
C613
0.01
C609
0.01
R634
2.2K
TP50
R633
6.2K
C617
0.01
R632
12K
TP49
R635
10K
R631
12K TP44
C610
0.01
100P
R105
10K
0.01
GND
+B
1
2
+B 2
GND 1
RR+ 21
RR- 43
RL-
65
87
RL+ 109
100K 10u50
2.2K
R121
C620
0.01
FR+ 2
R217
R241
10K
150
R215
R239
150
4.7K
33
R251
4.7K
100K 10u50
2.2K
R120
FL-
TP12
FR-
TP14 R128 C111
C112
10u50
R129
100K 4
8
TP11
FL+
TP13
10u50
C110
100K
R127
10
C109R122
TP18
1000P
C124
TP6
0.01
TP8
R102
1K
C102
1000P
TP7
C101
R101
1K
R104
C104
10u50
10K
R114
C106
15P
TP17
R106
10K
R103
10K
C103
10u50
C114
15P
R124 10K
C134 100P
7
10
2
8
4
R110
10K
5
4
R112
2
31
R108
12K
TP20 10K
1K
R100
C140
1000P
C132 100P
R126 10K
6
TP22
8
0.01
0.01
C36
C34
C698
TP16
10K
C105
15P
R113
4.7K
TP15 TP21
2
12K
R107
R111
10K
3TP19
1R109 7
R125 10K
6
R123 10K
C133 100P
C113
15P
C131
4
58
R149
240
C121
0.1
R119
9.1K
TP32
100
C230
R233 R273
2.2
R275
2.2
1
0.22C10810u50 85ISO-L
0.01
C120
8.2K
0.1
R130 4
6710u50
2
C116
R116
47K
TP31
56K 9.1K
C118
R118 R132
GND
R115
47K
13
C126
0.01
TP35
R134
C122
47K
VR1 50K(C)
7 4
5 8 9
6
R131 56K
R133
47K
C147
0.01
4
TP75
C128 15P
R138 62K
5
R136
4
2
3 5
4
R135
430
R137
430
1
7
10K
85
6
C148
0.01
10K
9
7
8
R141
R143
10K
56K
R600 22K
C611
3
C615
10u50
R636 18K
10u50
1
2
C5
47u25
C612
10u50
R638 22K
R72
2.2
C3
47u25
R2
R4
R74
100
C4
47u25
100
10K
R602
R71
R639
C2
47u25
10K
2.2
R3
R73
R1
10
3300u63
R7
10
1/2W
3300u63
1000P
16K C7
R8
10
1/2W
33K
R6
33K
C9
R5
C6
C8
1000P
3900u16
C18
2200P
R12
47
C11
3900u16
R30
10
1/2W
C10
R11
47
16K
L3
R146
C136
R142
240
C130
0.1
4.7u50
2.2K
R144
4
3
28
1
R140
150K
6
57
R147
150K
6
57
10K
R148
2.2K
C138
100P
R150
47K
VR4 10K(C)
C129 0.01
C127
0.01
C125 100P
R423
1K R
R167 47K
TP47
10
0.033
R154 R157
R153
R117 8.2K
10u50 ISO-R
C117C107
0.1 0.22
TP30
C135
0.15
20K
C115
R152
20K
10K
2
3
180K 1
10u50
2
31
C119
TP36
R158
7.5K
C139
R156
TP29
10K C137
3 6
1 5 2 4
VR2 50K(C)
9 8 7
0.033
R160
7 9 8 6
3 2 6
5
6
0.15
R161
100K
9.1K
4
7
810u50
C143
VR3 10K(A)
R139
620
R145
2
31
47K
R163
C145
0.01
C141
R162
7.5K 0.01
C146
C123
4.7u50
2.2K
R159
10K
R151
TP67
2
R165 2.2K
4
83 1L
1K
R422
R606 R607
10
R692
33u35
C601
R693
10K
C621
0.01
R603 R699
18K
R608
18K
R609
33K
100
R604
10K
C602
10u50
10K
R613
1.5K
4.7K
TP69
C603
10u50
TP72
C19
0.047
C20
0.047
1/2W 1/2W
R616
3.9K TP84
TP85
TP48
C600 0.01
C604
10u50
C605
10u50
R640
R625
620
R619
4.7
1.5K
R627
1K
680
22K
R605
33K
R694
R695
10K
R626
21uH
21uH
2
1
W4
W5
C1
10u25
L1
L2
TP74
3 LCH-
2
1
RCH-
RCH+
4
5
LCH+
P-CON
FUSE=40A
BATT 14.4V
6 GND
7
TP91
TP90
IN2+
REF
IN2-
VCC
C2
E2
OUTCTRL
R643 R624
10u50 10u50
R21
10K
R35
10K
C15
47u25
C13
8.2K
R18
4.7K
R55
47
R57
47
R14
47
R10
R54
47
R9
4.7K
R56
47
R13
47
TP71
TP66 R16
1.5K
TP70
R15
1.5K TP68
R646 3K
220K
76
5
TH601
TH602
TH605
C614
0.01
TP73
R648
4.7K
4.3K
R696
200
R19
10K
DTC
TP88
1000P
10u50
C16
C14
R22 100K
0.1
R24
20K
C17
R49
1
8C1
6
7GND
RT
TP86
5CT
R17
33K
R34
150
R27
1K
R23
10K
10u50
R20
330K
R26
100K
R25
6.8K
TP83
IN1-
3
4FBACK
1
2
IN1+
10u50
C58
C57
R649
8
1
4
3
2
R647
220K
R52
2.2
R652
4.3K
2.7K
R651
4.7K
C24
R656
3.9K
R653
4.3K
R618
4.3K
R53
R650
100K
1K
9
E1
10
11
12
13
14
16
15
TP89
TP51
C50
10K
R691
10u50
2.2K
R50
R58
10u50
C51
10K
0.047
C52
1
2
1
2
FAN+B FAN+B FAN+B
FAN+B
SW14.1V
SW14.1V
SW14.1V
B14.4V
B14.4V
B14.4V
+15V
+B
+B
+15V
+15V
B
15V +15V +15V +15V
SW14.1V-1
SW14.1V-1
+15V -15V +15V +15V -15V +15V -15V
+B
+B
+B
+B +B
100
R169
100
R168
100
R170
100
R171
C149
4700P4700P
C150
2
13
5
4 7
8
6
9
15V 15V 15V
15V
15V 15V
B
B
R59 100K
4.7K
R61
10K
R60
1K
R62
TP78
TP79
TP10 TP5 TP2
TP25
TP26
TP27
TP28
TP38
TP37
TP34
TP33 TP41
TP42
TP59
TP62
∗TRANS
TP80
TP81
TP55
TP58
TP54
TP53
TP82 TP87
10
R28
10
R29
R614 6.8K
R615 3.9K
3.6K
R611
30K
R610
3.6K
R612
TP63
TP64
TP76
TP43
TP57
TP56
TP61
TP60
+
+
+
+
++
+ +
++
+
++
+ + +
+
++
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
1
1
1
1 1 1
1
2
2
2 2
2
3
3
3
3
3 3 3 3
3
44
4