Kenwood KAC-PS520 User manual

POWER AMPLIFIER
KAC-PS520/X520
SERVICE MANUAL
© 2002-3 PRINTED IN KOREA
B51-7934-00 (K) 3547
30 30
ON
OFF
INFRASONIC FILTER
LPF
OFF
HPF
B.M.S.
+12dB
OFF
REMOTE
OPERATION
MONO(L ch)
STEREO
GND
LINE OUT EXT.AMP.CONT.LINE IN
L
R
L
R
LEFT
BRIDGED
SPEAKER
OUTPUT
RIGHT
POWER IN
P.CON
BATT.
GND
FUSE(
30Ax2
)

KAC-PS520/X520
2
MICROCOMPUTER'S TERMINAL DESCRIPTION
(X09-) IC11 : u-COM
PORT
No.
PORT NAME I/O FUNCTION OPERATING CONDITION
1+5V SW O Controls small-amount current. "L" : SW 5V on.
2- -- -
3FAN O Controls fan rotation. "H" : Fan on.
4- -- -
5D VOLTAGE I Detects class-D over-voltage. "L" : Over-voltage detection.
6 V DOWN I Detects momentary power down. "H" : Momentary power-down detection.
7D CURRENT I Detects class-D over-current. "L" (Class-D power on) : Over-current detection.
8AB VOLTAGE I Detects class-AB over-voltage. "L" : Over-voltage detection.
9AB CURRENT I Detects class-AB over-current. "H" : Over-current detection.
10 BLUE O Controls BLUE of variable illumination. "H" : Illumination on.
11 GREEN O Controls GREEN of variable illumination. "H" : Illumination on.
12 RED O Controls RED of variable illumination. "H" : Illumination on.
13 TEST - - -
14 RESET - Resets. "L" : Reset.
15 XIN - - -
16 XOUT - - -
17 VSS - - -
18 VAREF - A/D reference. -
19 ADIN 1 I Detects temperature. "H" : Unusual temperature detection.
20 ADIN 2 I Detects temperature. "H" : Unusual temperature detection.
21 ADIN 3 I Detects temperature. "H" : Unusual temperature detection.
22 ADIN 4 I Detects temperature. "H" : Unusual temperature detection.
23 --- -
24 BASS 12dB I Stabilizes BMS +12dB. "H" : BMS +12dB stabilization.
25 BASS REMO I Being remote-controlled from BMS head unit. "H" : remote control available.
26 BASS OFF I Releases boost. "H" : Boost off.
27 D POWER O Controls class-D amplifier. "H" : Class-D amplifier on.
28,29 - - - -
30 POWER O Controls power amplifier. "H" : SW 14.4V on.
31 COM HU I Measures the head unit pulse. -
32 OFFSET CON O Controls bass boost frequency offset. "H" : Offset on.
33 BASS CON A O Controls bass boost frequency offset. -
34 BASS CON B O Controls bass boost frequency offset. -
35,36 --- -
37 STAND-BY I Cancels stop mode by P.CON on. "L" : P.CON on or BACK-UP over-voltage detection.
38,39 --- -
40 VDD - VDD. -
41 TACT SW I Switches color. "H" : SW on.
42 MUTE 2 O Controls driver stages. "L" : Mute on.
43 MUTE 1 O Controls amplifier input mute. "L" : Mute on.
44 --- -

KAC-PS520/X520
3
ADJUSTMENT (KAC-PS520/X520)
No. ITEM INPUT
SETTINGS
OUTPUT
SETTINGS
RECEIVER
SETTINGS
ALIGNMENT
POINTS
ALIGN
FOR FIG.
Connect a cassette receiver or other receiver.
1IDEL
CURRENT -
Connect a DC
voltmeter
between emitter
terminals of
Q35/Q36 (L/R)
and J2 (SP.OUT,
L+/R-).
VOLUME : 0
VR1 (L ch)
VR2 (R ch)
(X09-)
2.5mV (a)

KAC-PS520/X520
4
ADJUSTMENT
(L) VR1
(R) VR2 J2
DC Voltmeter
(a)2.5mV
DC Voltmeter
(a)2.5mV L
Q35
Q36
R

5
ACEBD
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD
Component side view
Foil side view
CN1 CN2 CN3
S1
X08-4090-10 (J74-1362-11)
X08-4090-10 (J74-1362-11)
CN1
S1
CN2CN3
VR1 VR2 VR3
LPF
BMS
SENS
VR4
BRF(X810D)
HPF(X520)
161166
VR2 VR1
BMS SENS
16
VR3
LPF
HPF(X520)
BRF(X810D)
VR4
1166

2
FHJ LNGIKMO
1
3
5
7
4
6
D45
X09 B/2
J2
Q78
Q76
Q79
Q77Q75
(J74-1351-11)
X09-5430-10 A/2
S4
OFFREMOTE +12dB
B.M.S.
S2
OFF
FILTER
HPF LPF
S1
D2
P2
P1
S3
ONOFF
INFRASONIC
FUSE (30Ax2)
BATT.GND
POWER IN
P. CON
LEFTRIGHT
SPEAKER OUTPUT
Q80
WH1
Q44
WH2
D54
D53
CN3
D57
D55
D67
D50
Q82
Q33
Q61
Q67
WH3
D4
D8
D6
D3
D7
D5
D1
D9
Q68
D60
D56
Q60
Q72
Q74
Q71
Q73
D59
D49
Q69
Q63
Q62
Q64
D47
Q65
Q66
Q45
D43
D66
Q53
Q81
D10
J1
Q32
Q10
D18
D16
D46
Q12
Q4
Q34
Q2
Q20
Q19
Q40
J3
D51
D52
Q6
Q14
Q18
D14
Q8
D40
Q30
Q26
D32
Q24
D38
Q28
Q22
D34
D26
D36
D20
D30
D22
Q16
D24
D27
D35
D39
D31
D33
D25
D37
Q31
Q29
Q23
Q27
Q25
Q21
D44
Q5
Q13
Q7
Q17
Q15
Q46
Q47
Q43
Q9
Q11
Q1
Q3
D19
D48
D65
D29
D23
D21
D17
D13
D15
D11
D12
Q37
CN4
D28
Q38
CN2
CN1
Q48
Q49
Q85
D58
Q86
Q36
Q35Q39
W9
W8
W425
W143
W410
W131
W142
W161
W162
W209
W371
W324
W237
W245
W389
W388
W298
W390
W391
W380
W379 W378
W377
W366
W360
W367
W361
W411
W420
W381
W165
W221
W172
W362
W382
W358
W339
W338
W349
W350
W342
W328
W329
W337
W336
W334
W335
W355
W313
W401
W416
W413
W421
W383
W394
W409
W417
W414
W400
W244
W402
W370
W368
W145
W104
W108
W123
W150
W151
W152
W125
W133
W168
W147
W130
W134
W135
W395
W140
W406
W164
W107
W116
W139
W128
W136
W255
W141
W384
W119
W144
W146
W156
W314
W239
W121
W120
W105
W404
W347
W385 W393 W398
W403 W407
W397
W408
W386
W422
W190
W405
W387
W363
W415
W166
W248
W348
W243
W263
W374
W159
W247
W256
W250
W200
W175
W369
W399
W373
W372
W312
W356
W364
W357
W359
W365
W376
W353
W158
W236
W345
W344
W392 W396
W154
W148
W122
W110
W167
W103
W101
W113
W129
W153
W112
W173
W163
W176
W177
W351
W174
W169
W170
W155
W181
W160
W352
W419
W212
W315
W260
W208
W296
W206
W238
W242
W259
W198
W179
W194
W185
W219
W323
W224
W301
W215
W210
W192
W183
W207
W187
W235
W295 W226
W294
W325
W267
W271 W270
W277
W240
W279
W293
W252
W203
W264
W289
W311
W178
W182
W191W204
W217
W232
W230
EB EB E
EBEB
B
W213
W186
W184
W205
W241 W231
W218
W223
W281
W234
W214
W211
W273
W286
W274
W309
W180
W262
W275
W288
W276
W327
W278
W251
W283
W284
W285
W201
W196
W304
W265
W249
W290
W202
W318
W424
W423
W310
W297
W269
W261
W268
W225
W303
W322
W341
W321
W319
W299
W320
W246
W330
W333
W326
W195
W189
W188
W199 W197
W412
W257
W229
W354
W308
W305
W307
W291
W300
W253
W282
W227
TH3
W340
L1
C112
C111
W1
W149
C116
C115
W3
W7
W5
W343
W375
W346
W26
L5
C137
R4
C136
C9
R19
C4
R207
W2
L3
R267
C91
R208
R268
C92
R241
TH1
R204
R205 R203
R214 R213
R209
R210
C113
C114
W6
C117
W4
C118
R201
R202
C107
R198
W109
C108
R200
R240
TH2
R145
R140
R144
C132
R225
R239
R206
R142
R146
C10
R2
R1
R3
R6 C1
C3
C2
R40
C16
C93
C44
C119
C120
W126
R18
C37
C38
R70
C15
R227
R148
R147
R226
R224
R223
C130
L4
R230
R232
R242
C133
R243
R246
R245
R244
C134
R247
R228
R233
R237
R231
R229
R234
C131
W222
R236
W439
R235
R238
C129
C89
R163
R187
C42
R185
R159
C97
R160
R161
W331
C98
R184
R180
R179
R189
R273
R194
W118
L2
C105
C101 R274
R190
C90
W10
SDG SDG SDG SDG SDG SDG
C40
W292
R17
C39
R275
C60
C110
R20
R5
W111
R199
W115
C88
R84
C74
C144
W280
R92
C62
C135
R74
R76
R72
R90
C72
R162
R100
C94
C102
C66
R88
C70
R78
R80
C68
R86
C76
C80
W332
R116
R138
C138
R134
R114
R108
R104
VR2
R102
R128
R126
C86
R136
R130
R120 R106
C82
R122
C84
R124
R132
R118
R110
R112
C64
R191
R96
R94
R264
R98
W102
C78
R82
R271
R133
R135
R137
R129
R111
R105
R109
R115
R113
R107
R141 R143 R139
W272
C99
R276
R117
R101
R119
R103
R127
R123
R121
R125
C83
C81
C85
C73
R157
R156
R97
R263
R93
R95
R99
R85
R77
R79
R73
R75
R87
R83
R91
R151
R152
R153
R154
R155
C87
C63
C67
C75
C79
C77
R158 R81
R89
R71
C71
C69
C61
R69
X1
C148
VR1
C100
R164
R166
R165
R167
C139
R131
C65
R173
R33
R170
R169
R168
R149
R150
C96
R172
R171
R188
R34
C109
C103
R195
R197
R196
L6
C123
C122
C128
C127
C121
C124
C126
C125
R220
R219
R192
R193
R216
R215
R217
R265
W216
R212
R211
C26
C28
C25 C27
W117
W114
W124
W254
W127
R272
W440
W442
W443
W449
W447
W444
W452
W451
W445
W450
W446
W448 W441
W458
W459
W453
W454
W455 W456
W460
W461
W438
W437
W436
W435
W434
W433
W429
W428
W427
W430
W426
W302
W432
W431
W287
W171
W157
W132
W220
W138
W462
C145
W418
W193
W316
W137
W106
C141
B B B
E
BE
BE
B
BE BE BE BE BE BE
EB
E
BE
BE BE BE BE
BE
B
B
BE BE
B
EBE
E
BE
E
B
EB
E
E
E
E
EB
B
E
E
EB
EB
BE
BE
BE
B
E E
B B
EB
B
BE
BE
EB EB
BE
BE
BE
BE
BE
EB
B
EB
E
14
B
E
BE
B BE
E
BE
BE BE
BE
EB
BE
BE
E
BEE
B
B
BE
EB
BE
W25
R186
13
C143
C104
12
R175
C95
C106
34
1
44
11
R174 R222
54
W24
R221
18
16 9
33 12
22
23
R218
R183
R176
R182 R177
R178
R181
C35
C55
R67
C53
R65 R63
1
C45
C51
R61
4
8
R47
C47
C33
R45
5
C49 R51
R32
R30
R36
R28 R38
C52
R62
C48
R68
R49
C56
C54
R66
1
R64
4
8
C46
C34
R46
5
R48
R50 C36
C50 R52
W23
R312
C21
R27
R37
W22
R31
C22
R35
R25
95 16
84 1
W21
8
R255
1
C43
C41
R58
W18
C57
C58
R59
R262
W17
R56
R55
R57
C59 1
R60
R43
8
R258
W19
W20
C140
R54
R53
R260
1
4
R256
4
8
55
R14
C12
R12
R41
C31
C23
R23
R21
1
1
18
61
14
6
4R29
R44
R39
C24
58
R22
R24
C29
C30
C20
R16
R266
R26
W16
R42
C32
W15
C14
R253 R254
R250
R251
R252
R249
R248
R8
W13
R11
C18
R10
C6 R270
R13 R15
W12
8
5
1
4
W14
C147
C8 C146
R9
C17
C19
1
C13 C11
4
85
R269
C5
C7
R7
W11
IC11
Q84
D64
Q83
D63
D61
IC12
IC10
D62
Q52
Q50
Q51
IC6
Q41
IC7
Q42
IC9
IC8
IC4 IC5
STEREO MONO
OPERATION
LINE IN LINE OUT
EXT. AMP. CONT.
IC3
Q70
IC2
D68
D69
IC1
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD(Foil side view)
6 7
X09-5430-10 A/2 (J74-1351-11)
REF.NO. IC1 IC2 IC3 IC4 IC5 IC6 IC7 IC8 IC9
IC10 IC11
IC12
ADDRESS 2N 3N 3N 4N 4N 6N 5N 5N 5N 6J 6I 4H
X09-5430-10 A/2 (J74-1351-11)
REF.NO. Q1 Q2 Q3 Q4 Q5 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q20 Q21 Q22 Q23 Q24 Q25 Q26 Q27 Q28 Q29 Q30 Q31 Q32 Q33 Q34 Q35 Q36 Q37 Q38 Q39 Q40 Q41
ADDRESS 3M 5M 3L 5L 3L 3L 5L 3L 5L 3L 5L 3L 5L 3K 5K 3L 5L 2L 6L 2M 5M 2L 6L 2M 5M 2M 5M 2L 5L 2K 5K 2M 6L 2L 6M 2M 6M 2K 6K 5N
REF.NO. Q42 Q43 Q44 Q45 Q46 Q47 Q48 Q49 Q50 Q51 Q52 Q53 Q60 Q61 Q62 Q63 Q64 Q65 Q66 Q67 Q68 Q69 Q70 Q71 Q72 Q73 Q74 Q75 Q76 Q77 Q78 Q79 Q80 Q81 Q82 Q83 Q84 Q85 Q86
ADDRESS 5N 3K 3K 3M 3K 3K 2K 2K 3L 3L 4L 6I 4G 4G 6H 6G 6H 6H 6H 6G 6G 6G 3M 4H 4G 4H 4G 2G 2H 2G 2I 2H 2I 6J 6J 6J 6J 6K 6J

ABDFHJCEG I
2
1
3
5
7
4
6
Q1
Q2
Q4 Q12
Q14
Q18
Q22
Q24
Q23
Q15
Q3
Q21
Q13
Q11
Q17
Q7
Q5
Q8
Q6
S1
Q9
Q10
Q16
Q20
Q19
Q27
Q25
Q26
Q28
Q32
Q30
Q31
Q29
P2
D68
D69
Q37
Q33
Q38
Q36
Q40
Q34
Q39
Q35
D1
D5
D33
D37
D35
D23
D25
D13
D17 D15
D21
D4
D8
D19
D20
D11D12
D27
D29
D31
D39
D40
D30
D28
D32
D38
D26
D24
D36
D22
D18D16
D14
(1/2) IC1(2/2)
(1/2)
IC2(2/2)
IC3
IC3(2/2)
IC5(1/2)
IC7(1/2)
IC4(2/2)
(1/2)
IC6
WH3WH2
J1
D3
D7 IC1
IC2
D6
D2
ISOLATION
AMPLIFIER
WH1
(1/2)
BASS
BOOST
BOOST
BASS
IC4
HPF
LPF
BASS
BOOST
HPF
(1/2)
MUTE
INPUT
AMPLIFIER
DIFFERENTIAL
CASCADE
STAGE
CURRENT
CONSTANT
CIRCUIT
DIFFERENTIAL
AMPLIFIER
INPUT
2ND
AMPLIFIER
DIFFERENTIAL
MUTE
D34
CURRENT
MIRROR
TEMPERATURE
COMPENSATOR
OVER-CURRENT
DETECTOR
POWER AMPLIFIER
DRIVER
POWER
STAGE
DIFFERENTIAL
AMPLIFIER
INPUT
STAGE
CASCADE
CIRCUIT
CONSTANT
CURRENT
DIFFERENTIAL
AMPLIFIER
INPUT
MIRROR
CURRENT
TEMPERATURE
COMPENSATOR
DETECTOR
OVER-CURRENT
POWER AMPLIFIER
DRIVER
STAGE
POWER
OVER-CURRENT
DETECTOR
OFFSET
D9
D10
BOOST
BASS
SWITCHING
Q42
OFFSET
FREQUENCY
FREQUENCY
Q41
IC1,2,4,5 : NJM5532MD
IC3,6,7 : NJM4565M
IC8 : TC4052BF(N)
IC10 : PST9130NR
IC11 : TMP87C847U3JV4
IC12 : UPC494GS
Q1,2,21,22 : 2SC1845(F,E)
Q3-8,11,12,23,24,45
: 2SA992(F,E)
Q9,10,43,65,73,74
: 2SA733(A)(Q,P)
Q13,14,17,18 : 2SC2631(R,S)
Q15,16 : 2SA1123(Q,R)
Q19,20 : 2SC4137(V,W)
Q25-28 : 2SC2235
Q29-32 : 2SA965
Q33,36-38 : 2SC3856LB
Q34,35,39,40 : 2SA1492LB
Q41 : DTA124EK
Q42 : DTC124EK
Q44 : DTA124ES
Q46-49,61,64,66-69,71,72
: 2SC945(A)(Q,P)
Q50-52,70,83 : 2SC2412K
Q53,62,63,85 : 2SC3940A(R,S)
Q60,86 : 2SA1534A(R,S)
Q75-80 : IRFI1010N
Q81 : 2SD2375
Q82 : 2SB1548(P)
Q84 : 2SA1037K
D1-8,11,12,17-40,44,
51-54,66 : 1SS133
D9,10 : RD8.2JS(B)
D13-16,43 : RD5.1JS(B)
D45 : B30-1582-05
D46 : 6A20-M
D47,65 : RD6.2JS(B)
D48 : RD9.1JS(B)
D49 : RD15JS(B)
D50 : RD7.5JS(B)
D55 : FML22S
D56 : FML22R
D57-60,67 : FR103S
D61,62 : HZM20N(B)
D63,64 : HZM16N(B2)
D68,69 : MA3068WA
B LINE
B LINE
GND LINE
SIGNAL LINE
123
IDLE
ADJ.
ADJ.
IDLE
S1
CN3
CN2
CN1
INPUT SENS
BASS BOOST
LPF
HPF
3
2
1
TC4W66FIC9 :
5
5
A
A
C16
1K
R1
0.01
C147
470P
C1
1K
15P
0.01
C146
1K
R2
10K
R3
10K
R9
10u16
C72
10u16
C3
+
130
R5
10u16
C4
+
10u16
C15
+
11K
R21
4.7K
3.3u50
C25
2.2u50
C27 910K
R35
220K
R37
220
R23
0.1
C43
0.1
C33
8.2K
R45
0.1
C47
47u25
C39
10u16
C37
+
+
0.1
C45
9.1K
R47
47u25
C44
+
56K
R50
4.7
R135
4.7
R131
2W
0.1
R143
2W
0.1
R139
220
R129
1K
R117
10
R111
1K
R121
470P
C83
470P
C85
1K
R123
2W
0.1
R141
2W
0.1
R145
1/2W
1K
R119
220P
C81
100
R105
220
VR1
1000P
C77
100
R275
12K
R89
6.8K
R93
6.8K
R95
1.8K
R101
C73 22P
13K
R91
510
R103
12P
C79
1K
R87
100P
C137
47u25
C69
4700P
C67
100
R79
47K
R81
330P
C75
1u50
C65
2.4K
R83
10u16
C71
150
R263
150
R97
330P
C141
0.1
C18
0.1
C20
15P C12
10K
R10
15P
C10
10K
R12
10u16
C16
+
10K
R15
0.1
C17
0.1
C57
12K
R55
150K
R56
120K
R57
6.8K
R58
22K
R52
0.22
C36
8.2K
R46
47u25
C40
10u16
C38
9.1K
R48
+
+
0.1
0.1
C34
0.1
C46
15K
R44
910K
R38
2.2u50
C28
3.3u50
C26
220
R24
11K
R22
0.1
C29
0.1
C30
1K
R270
8.2K
R69
47u25
C61
+
1K
R71
1K
R85
1K
R77
150
R99
470u50
+
C94
150
R100
10 1/2W
R163
1K
R86
1K
R72
47K
R82
100
R80
4700P
C68
100P
C138
R88
13K
R92
22P
C74
10
R115
220P
C87
100
R107
4.7
R133
4.7
R137
1/2W
1.8K
R127
100
R108
220P
C88
470P
C86
1K
R124
1.8K
R128
1K
R120
10
R114
10
R116
4.7
R134
4.7
R138
2W
0.1
R142
2W
0.1
R146
2W
0.1
R140
2W
0.1
R144
1.8K
R126
1K
R122
470P
C84
47u25
C70
+
510
R104
12P
C80
330P
C76
100
R276
1000P
C78
12K
R90
6.8K
R94
6.8K
R96
1.8K
R102
220
VR2
47u25
C62
8.2K
R70
1u50
C66
+
2.4K
R84
150
R264
150
R98
220P
C82
100
R106
10
R110
R112 10
4.7
R132
220
R130
1K
R118
4.7
R136
2.2u50
C100
47K
4.7K
R18
22u16
C136
10
R109
5
6
8
4
73
21
2
3
8
4
15
67
2
31
6
57
6
5
8
4
7
7
6
5
4
8
1
3
2
5
6
8
4
7
4
8
5
67
NC FIL. G
65
HP L FIL. G HP R HP R
2431654321
TACT SW5V LP 3 LP 3 LP 2 LP 1
R269
C5
R7 3.6K
C7 22P
C9 15P
R11 10K
R13 10K
C13 15P
C11 15P
0.1
C19
C2 470P
R4 10K
C93 1000P
1K
C8 22P
R8 3.6K
R6 130
C6 15P
R14 10K
C14 15P
R265
10K
R16
22K
R266
IC1,2
12
IS GND B.B. L
5
SENS
3
B.B. R
4
SENS L
6
SENS R
C23 0.47
+
C24 0.47
15K
R43
R41 5.6K
C31 100P
0.22
C35
R39
C58 0.1
R59 4.7K 10K
R60
C32 100P
R42 5.6K
C59 0.047
R40
C48
R17
8
4
22K
R54
C41 0.1
R49 56K
1K
R78 1K
Q13,14,17,18
Q21,23
Q25,27,29,31
R113 10
R125 1.8K Q33,35,37,39
Q19
Q20
Q22,24
Q26,28,30,32
Q34,36,38,40
Q45
3.9K
6
5
1
23.9K
3
R75 13KR76 13K
C64 220P C63 220P
R74 5.1K R73 5.1K
Q4
Q3
13
I/O2
O/I2
CONT1
VDD
B
A
X3
X0
XCOM
X1
X2
VDD
C21
5
R32 2K
R28 470
R20
1.2K
R26
4.3K
R30 15
0.1
C22
0.1
Y0
1
Y3
YCOM
Y2
4
3
2
VSS
VEE
INH
Y1
8
7
6
CONT2
3O/I1
I/O1
2
1
VSS
4
R312
100K
R19
1.2K
R25 470
R29 4.3K
R27 2K
15
16
12
13
14
R31 15
9R34 1K
10
11
R33 1K 33
34
6
7
8
5
13
2
3
6
5
C90 0.047R148 10 R147 10C89 0.047
R150 47K R149 47K
1
+
R164
32
Q43
Q45
Q47
SW5V
B
+B
+
+
+
+
+B
+B
+B
BB
B
+B +B
B
B
+B
B
+
B
+B
B
+B
B
B
+B
B
+B
+B
+B
+B
B B
+B +B
+B
B
+B
+B
B
+B
+B
B
B
+B
+B
+B
+B
+B
+B
VR1
VR2
VR3
VR4
3
1
2
4
6
5
2
1
5
3
4
5
6
6
2
3
4
1
R36
220K
GND SW
22K
22K
22K
22K
-15.4V
15.4V
15.4V
15.4V -15.4V
15.4V
-15.4V 15.4V
-15.4V
-15.4V
15.4V
-15.4V
-8.2V
-8.2V
5V
0V
-8.2V
8.2V
8.2V
8.2V
IC8
IC9
(X09-5430-10) (A/2)(X08-4090-10)
PREAMPLIFIER UNIT AUDIO UNIT

TKMOQSLNPR
KAC-PS520/X520
Q60
Q62
Q63
Q65
Q50
Q51
Q52
Q70
Q45
Q53
Q80 Q78 Q76
Q79 Q77 Q75
Q43
Q47
S3
Q46
Q49
Q48
Q69
Q68
Q67
Q64
Q61
Q72
Q71
Q73
Q74
Q66
D56
P1
D45
D55
Q44
S2
S4
D67
D54
D48
D47
D66
D57
D59
D58
D60
D53
D44
D43
D49
D50 D46
D65
D52
IC6(2/2)
IC7(2/2)
IC5(2/2)
INFRASONIC
FILTER
INVERTER
INPUT SIDE
VOLTAGE-DOWN
MOMENTARY
DETECTOR
SWITCHING
POWER STAGE
SWITCHING
DRIVER
SWITCHING
REGULATOR
CN3
J2
CN4
15 (FAN)
SP OUT
FAN
SWITCHING
INPUT SIDE
VOLTAGE-DOWN
OVER-
DETECTOR
SWITCHING
5V
5V
AVR
14.4V
SWITCHING
P. CON
DETECTOR
J3
AMP
CON
D51
COMMUNICATION
DETECTOR
u-COM
SWITCHING
LED
SP. DC
DETECTOR
OFFSET
MUTE
MUTE
RESET
IC
Q84
Q86
Q82
D64
D63
Q85
AVR
D62
D61
Q81
Q83
CN2
CN1
(F07-1751-05)
L6
X1
4.19MHz
22K
R53
22K
R51
22K
R255
10u16
C60
22K
R262
10K
R260
10K
R256
47P
C140
13K
R68
13K
R67
200K
R65
200K
R66
0.22
C54
0.22
C52
4.7K
R62
2.2
C50
4.7K
R61
2.2
C49
0.22
C51
0.22
C53
R63 13K
2.2
C55
5.1K
R258
1/2W
10
R179
1/2W
10
R267
0.047
C91
0.047
C92
10 1/2W
R268
10 1/2W
R180
33
R203
4.7K
R207
1.5K
R201
100u16
C109
10u16
C107
1.5K
R202
4.7K
R208
33
R204
10 1/2W
R223
1800P
C110
3900u16
C112
+
3900u16
C111
120
R229
120
R228
120
R231
120
R230
20K
R232
10
R233
10
R234
10K
R224
4.7K
R225
10u16
C129
+
22K
R226
22K
R227
1u50
C130
47u25
C131
+
4.7K
R236
0.1
C143
13K
R238
10K
R237
C104
1/2W
18
R272
2.2K
R273
10K
R274
1500P
C118
1/2W
10
R214
1/2W
10
R213
1500P
C117
680u63
C120
680u63
C119
1/2W
10
R210
1500P
C114
1500P
C113
1/2W
10
R209
4700u56
C116
4700u56
C115
13K
R64
2.2
C56
R165
330
R166
22K
R167
33u10
C139
R168 270
1K
R151
47
R152
10K
R154
1u50
C99
1K
R153
5.6K
R155
5.6K
R156
20K
R159
100u10
C97
0.01
C98
100K
R162
100u6.3
C96
R171 5.6K
3.9K
R173
47K
R172
100K
R184
100K
R185
0.01
C145
0.01
C144
0.01
C148
10K
R157
10K
R158
R176 R177 R178
4.7K
R183
4.7K
R182
4.7K
R181
R186 47K
1u50
C42
R188R189 5.6K R190
0.010.01
R191 2.2K
R192R193 2.2K
R196 100K R197 100K
R194
R195 100K
2.2K2.2K2.2K
47K
R247
0.01
C134
22K
R246
22K
R245
47K
R244
3.3K
R242
3.3K
R240
750
R243
10u16
C133
+
0.01
C132
3.3K
R241
510
R271
3.3K
R248
0.022
C135
27K
R250
100K
R251
100K
R253
R175 100K
1K
R174
C95 0.1
0.1
C106
100u10
C105
L5
L4
L1
L2
L3
1
2
3
4
5
6
7
8
NI IN1
I IN1
FBACK
DTCONOUT
CT
RT
GND
C1
16
15
14
13
12
11
10
9
NI IN2
I IN2
REFOUT
CON
VCC
C2
E2
E1
5 4
VCC
OUT
1
2
3
NC SUB GND
ADIN 2
NC
20
36
4
GREEN
BLUE
AB CURRENT
AB VOLTAGE
D CURRENT
V DOWN
D VOLTAGE
NC
8
11
10
9
7
6
5
XIN
13
RED
12
RESET TEST
15
14
18 VSS
XOUT
17
16
ADIN 1 VAREF
19
FAN
NC
5V SW
3
2
1
TACT SW
MUTE 2
MUTE 1 43
NC 44
41 42
STAND-BY
38
NC
VDD
39 40
NC 37
30
NC
ADIN 4 ADIN 3
22
21
BASS 12dB
BASS OFF
BASS REMO
D POWER
NC
NC
POWER
26
23
24
25
27
28
29
BASS CON B
OFFSET CON
BASS CON A
COM HU
NC 34
35
31
32
33
2
31
2
31
3
2
1
+
R205 100
R206 100
1.1K
R199
C108 1000P
10K
R198
Q75-80 Q71-74
16K
R200
1
2
F2(30A)
BATT
P-CON
Rch+
Rch-
Lch-
Lch+
GND
R235
47K
0.1
R239 22K
Q62-64
Q68,69
2
1
R254 100 R249 4.7K
Q70
10K
R252
0.01
R187 100K
R169 560
R170 220
8.2K
R160
R161
47K
Q50-52
10K 10K 10K
100K
Q48,49
Q3
Q4
22K
15K
47K 47K
++
++
R222
R220
430
R216
2710
R218
10K
R219
R221
10u16 10u16
C128C127 47u25
C126C125
47u25
10
430
C124
47u25
C122
47u25
C123
47u25
C121
47u25
R215
27
Q81-86
R217
10K
++
++
+
++
++
1
3
32
33
34
1
3
2
1
3
4
3
1
2
4
4
3
2
4
3
2
+
Q45
Q47
Q43
6
6
33K
R211
33K
R212
+14.4V
+14.4V
+14.4V
SW5V
SW5V
SW5V
SW5VSW5V
SW5VSW5V
SW5V
SW5V
SW5V
+5V
+5V
+
+
+5V
+
+
+
B
B
+B
+B
B
+B
+5V
+B
B
+B
B
B
+B
+B
+
+5V
+
+B
+B
+B
+B
+B
+B
+B
+B
B
+5V
+B
B
+B
B
B
+B
+B
B
+B
+B
+B
B
+B
+5V
B
+B
+B
+
+B
B
+
+B
B
+B
+B
B
+B
+B
+B
+B
SW5V
Q43,46,47
TH3 TH2 TH1
C103 C102 C101
(F52-0015-05)
F1(30A)
(F52-0015-05)
+B
22K
22K
0V
3.3V 0V
12V
5.0V
0.5V
4.0V
13.6V
5.0V
13.6V
5.0V
5V
0V
0V
5V
5.0V
5V
0V
0V
5V
0V
5V
5V
0V
5V
0V
0V
5V
5.0V
0V
5V
5V
0V
0V
5V
5V
0V
0V
5V
5.0V
0V
5V
0V
5V
-47.0V
47.0V-46.7V46.7V
-18.8V18.8V
5.0V
15.4V
-15.4V
IC12
IC10
IC11
(X09- ) (B/2) KAC-PS520/X520 (E/K,M,J)
CAUTION: For continued safety, replace safety critical com-
ponents only with manufacturer's recommended parts (refer
to parts list). indicates safety critical components. For
continued protection against risk of fire, replace only with
same type and rating fuse(s). To reduce the risk of electric
shock, leakage-current or resistance measurements shall be
carried out (exposed parts are acceptably insulated from the
supply circuit) before the appliance is returned to the cus-
tomer.
2SA1123
2SA1534A
2SA733(A)
2SA965
2SA992
2SC1845
2SC2235
2SC2631
2SC3940A
2SC945(A)
DTA124ES
DTA124EK
DTC124EK
2SC2412K
2SC4137
2SB1548 2SA1037K
TC4052BF NJM4565M
NJM5532MD
UPC494GS PST9130NR
TC4W66F

KAC-PS520/X520
12
Parts with exploded numbers larger than 700 are not supplied.
KAC-PS520/X520(E/K,M,J)
(X09-) (B/2)
(X09-5430-10)
(A/2)
(X08-4090-10)
1
28
27
12
11
28
27
9
5
6
331
31
730
717
15
741
742 726
702
742
37
DC1
13x2
29x4
36
4
N
N
NN
N
C
C
Jx2
Hx2
J
Jx2
N
NN
N
N
N
C
P
B
P
Bx4 P
Px2
M
Rx2
M
Px2 Px2
C
Fx2
Fx2
Bx2
Px2
P
P
P
P
L
B
L
P
K
Bx4
Fx2
Fx2
F1,2
Q
Px2
Dx2
E
E
Dx2
Dx2
Dx2
Px2
J
AG
Px2
P
PQ
1
2
3
AB
EXPLODED VIEW

KAC-PS520/X520
13
PARTS LIST
✽New Parts
Parts without Part No. are not supplied.
AN Desti- AN Desti-
Ref. No. d e Parts No. nation Ref. No. d e Parts No. nation
dw dw
J 1B N80-3010-45 PAN HEAD TAPTITE SCREW
K 1B N83-3013-45 PAN HEAD TAPTITE SCREW
13B✽A21-4192-12 DRESSING PANEL KM1J1 L 2A N87-3012-46 BRAZIER HEAD TAPTITE SCREW
13B✽A21-4193-12 DRESSING PANEL E1 M 2B N89-2606-46 BINDING HEAD TAPTITE SCREW
32A✽A64-2698-02 FRONT PANEL N 1B N89-3006-45 BINDING HEAD TAPTITE SCREW
41B✽A84-0311-02 REAR PANEL
P 2B N89-3008-46 BINDING HEAD TAPTITE SCREW
52B✽B11-1388-04 REFLECTION SHEET Q 3B N89-3015-46 BINDING HEAD TAPTITE SCREW
63A✽B11-1389-04 REFLECTION SHEET R 2A N80-2608-45 PAN HEAD TAPTITE SCREW
92A✽B19-2143-03 LIGHTING BOARD
- B46-0100-50 WARRANTY CARD KE1M1 37 1A ✽W01-1586-05 ACCESSORY
- B46-0648-03 USER CARD K
CN1 -3 ✽E41-0294-05 PIN ASSY
-✽B64-2277-00 INST. MANUAL (ENG,FRE,SPA) KE1
VR1 ✽R31-0235-05 VARIABLE RESISTOR
-✽B64-2278-00 INST. MANUAL (GER,DUT,ITA,POR) E1
VR2 -4 ✽R31-0236-05 VARIABLE RESISTOR
-✽B64-2279-00 INST. MANUAL (ENG,T-CHI) M1
S1 S68-0806-05 PUSH SWITCH
D45 B30-1582-05 LED
11 3A ✽F01-1685-01 HEAT SINK
C1 ,2 CK45FB1H471K CERAMIC 470PF K
12 3A ✽F07-1109-04 COVER
C3 ,4 CE04DW1C100M ELECTRO 10UF 16WV
13 1A ✽F07-1110-01 COVER
C5 ,6 CC73GCH1H150J CHIP C 15PF J
15 2B ✽F09-1751-15 FAN
C7 ,8 CC73GCH1H220J CHIP C 22PF J
F1 ,2 1B F52-0015-05 FUSE (BLADE TYPE) (30A)
C9 ,10 CC45FSL1H150J CERAMIC 15PF J
-✽H10-4805-02 POLYSTYRENE FOAMED FIXTURE KE1M1
C11 -14 CC73GCH1H150J CHIP C 15PF J
C15 ,16 CE04DW1C100M ELECTRO 10UF 16WV
-✽H11-1529-04 POLYSTYRENE FOAMED BOARD KE1M1
C17 -22 CK73FB1H104K CHIP C 0.10UF K
C23 ,24 CK73FB1C474K CHIP C 0.47UF K
-✽H13-2022-04 CARTON BOARD KE1M1
C25 ,26 CE04HW1H3R3M NP-ELEC 3.3UF 50WV
C27 ,28 CE04HW1H2R2M NP-ELEC 2.2UF 50WV
- H21-1117-04 PROTECTION SHEET KE1M1
C29 ,30 CK73FB1H104K CHIP C 0.10UF K
C31 ,32 CC73GCH1H101J CHIP C 100PF J
-✽H21-1141-04 PROTECTION SHEET KE1M1
C33 ,34 CK73FB1H104K CHIP C 0.10UF K
C35 ,36 CK73FB1C224K CHIP C 0.22UF K
- H25-0336-04 PROTECTION BAG (170X250X0.03) KE1M1
C37 ,38 CE04DW1C100M ELECTRO 10UF 16WV
C39 ,40 CE04DW1E470M ELECTRO 47UF 25WV
-✽H25-1179-04 PROTECTION BAG KE1M1
C41 CK73FB1H104K CHIP C 0.10UF K
C42 CE04DW1H010M ELECTRO 1.0UF 50WV
-✽H54-2522-04 ITEM CARTON CASE (KAC-X520) KM1
C43 CK73FB1H104K CHIP C 0.10UF K
C44 CE04DW1E470M ELECTRO 47UF 25WV
-✽H54-2523-04 ITEM CARTON CASE (KAC-PS520) E1
- H25-0336-04 PROTECTION BAG (170X250X0.03) KE1M1
-✽H25-1179-04 PROTECTION BAG KE1M1
-✽H54-2522-04 ITEM CARTON CASE (KAC-X520) KM1
-✽H54-2523-04 ITEM CARTON CASE (KAC-PS520) E1
C45 -48 CK73FB1H104K CHIP C 0.10UF K
C49 ,50 CK73EB1C225K CHIP C 2.2UF K
27 2A ✽J21-9853-03 MOUNTING HARDWARE
C51 -54 CK73FB1C224K CHIP C 0.22UF K
28 2A ✽J21-9854-03 MOUNTING HARDWARE
C55 ,56 CK73EB1C225K CHIP C 2.2UF K
29 1A ✽J21-9864-04 MOUNTING HARDWARE
31 2B J30-1066-04 SPACER
C57 ,58 CK73FB1H104K CHIP C 0.10UF K
C59 CK73GB1E473K CHIP C 0.047UF K
36 1A N99-1577-15 SCREW SET
C60 CE04DW1C100M ELECTRO 10UF 16WV
A 2A N09-4026-05 TAPPING SCREW (4X8,TP,S)
C61 ,62 CE04DW1E470M ELECTRO 47UF 25WV
B 2B N09-4382-05 TAPTITE SCREW (2.6X10)
C63 ,64 CC45FSL1H221J CERAMIC 220PF J
C 1B N09-4488-05
TAPTITE SCREW (3X6)
D3A✽N09-6032-05 DRESSED SCREW (TORX,4X12)
C65 ,66 CE04DW1H010M ELECTRO 1.0UF 50WV
C67 ,68 CK45FB1H472K CERAMIC 4700PF K
E3A✽N09-6033-05 DRESSED SCREW (M3X8)
C69 ,70 CE04DW1E470M ELECTRO 47UF 25WV
F2A✽N09-6039-05 TAPTITE SCREW (2.6X13)
C71 ,72 CE04DW1C100M ELECTRO 10UF 16WV
G 2A N15-1040-46 FLAT WASHER
C73 ,74 CC45FSL1H220J CERAMIC 22PF J
H 1B N80-2008-45 PAN HEAD TAPTITE SCREW
E1 : KAC-PS520
E: Europe K: North America M: Other Areas KM1J1 : KAC-X520
J: Japan indicates safety critical components.
Description Description
KAC-PS520/X520
PREAMPLIFIER UNIT (X08-4090-10)
AUDIO UNIT (X09-5430-10)
KAC-PS520/X520