Kenwood KRC-509S, Service Manual

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K M O Q S L N P R T
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD ( Foil side view )
11 12
L-CLK
R23
R22
C7 R9
L-DA
T
AL
L-DA
T
A
S
REMO
R21
1
R10
L-CE
CP1
15
DGND
2
14
C8
C10
C11
R25 R24 R20 R26
ILL-GND B
DIMMER E
B
E
R6
R1
1
R19
R12
B E
S.GND
ILL+B
C9
VDD
R7 R8
R14
R17
OPEN
26
R3
KI4
KS4
50
51
R4
VLCD1
KS2
75
KS3
76
100
KI3
KI5
RST
C4
KI2
CP2
CP3
C3 C5
R5
R13
B KS5
E
B
C6
E
25
C1 R1
R2
1
C2
KI1
KS1
R18
J1
Q7
Q6
D1
Q5
S31
Q1
Q2
IC1
dB
KS4
4
CLK
2
AM
1
FM
3
KI5
SRC
TI
DISP
65
4
KS3
68
KI2
RST
3
KS2
2
1
AT
T
18
KI1
1
KI4
KI3
19
KS1
X13-9960-13 (J74-1137-12)
SWITCH UNIT
D1
1
D23
D20
D19
D17
D16
IC2
D18
D15
D21
D22
D3
D14
D4
D2
D2
D13
ED1
D10
D9
D8
D7
D5
D6
C79
C251
R606
R197
R124
B E
B E
E B
E B
R1
15
B
R125
E
R116
B E
E B
C387
C386
R608
R387
R610
R119
E
R1
18
B
R94
R93
C83
W10
E
R87
R90
R89
E B
R1
R3
C4
R2
R74
R372
R615
C380 R381
R380 W22
R61
1
R612
W23
R616
R221
C225
R173
R614
B E R108
R131
R604 R605
R386
R617
R83
C103
B
L10
W20
W12
R288
W11
R369
R618
R359
C304
R348
R619
W24
R312
R339
R333
R96
W21
R105
E
R106
R95
B
R286
B
E
C91
E B
R109
R218
R371
R350
B E
W13
R370
R375 R373
R306
R217
B E
R377
R307
C300
W25
14
B E
8
R135
1
7
E B
R352
C139
C42
W3
R107
R104
C78
C40
C39
TH1
C36
C37
C35
L7
C366
C221
R374
R376
R172
E B
R171
C223
E B
R416
R412
C367
R415
C362
R414
C363
R413
R411
C381
R613
C170
C166
C153
R168
L5
R167
C155
R24
R10
R9
R23
R34
R33
C59
R7
R38
R48
R8
R37
R47
C151
C60
Q40
Q44
Q33
Q34
Q35
Q37
D42
Q36
D44
Q21
D32
Q17
D34
D2
D21
Q95
D81
Q41
Q30
Q23
Q29
Q45
Q18
IC10
Q72
D57
D49
D39
D40
D35
D38
Q71
Q91
Q92
D1
25 1
B
C94
R81
E
5V
L9
E
W122
R289
R357
RST
20M
C385
11
12
R607
CP3
W123
R385
C101
1
R609
C102
13
R121
25
B
14
E
C256
C302
32.768KHz
C301
C303
X2
C98
2
1
B
4 3
2
1
E
C99
C82
R315
C84
R620 C85
B
B
E
C3
C80
B
R82
C2
C87
E
R73 R78
R76 R77
R75
10 9
11 13
6
7 4
12
8 5 3
W101
C1
R72
C95
R1
1
1
R1
13
C93
R71
1
2
16
8
R330
51
75
R328
R327
R323
R320
R324
R322
R325
R319
R321
R338
R326
CP4
CP5
W127
C222
C226
4
C34
E
C356
R402
W121
R404
R163
R161
C156
C136
1
26
50
X1
R313
25
TEST
R344
R345
100
R342
R340
R361 R341
76
R337
R343
W1
W2
R347
R346
B
R114
C252
W28
W26
W31
W27
R110
W120
W119
E
C92
B
W29
W30
C253
E
C90
R621
W125 W124
CP12
R603
R602
CP7
W126
R335
1
R198
2
R162
C138
C137
R622
14
C157
C135
C6
R349
R301
CP13
15
C351
C361
R400
C350
C131
C38
W103
E
R103
R80
B
E
B
C89
E
B
R1
17
R102
R101
C96
R98
R97
C88
R100
W118
W104
R99
E
B
W117
W105
W102
9
1
R92
L11
R91
C81
W106
W108
C111
C5
1
W107
C112
W109
C132 R133
C133
28
L8
W1
1
1
C32
W1
10
C41
R136
W115
W116
R13
W114
R12
R14
R11
E B E B
C364
C358
R410
R403
C354
4.332M
13
1
16
X3
12
C190
C224
C163
8
VR2 9
R
C360
40
11
21
C353
C352
R401
20
30
31
10
C355
1
C357 C359
R409
5
4
2
1
C365
VR1
L
24
1
R169
E
B
R170
B R166 B
R165
E
C30
C33
C28
L4
L3
L
E B
C31
C109
B
C29
E
C27
R134
C147
B
B
E
R
E
1
L1
1
3
2
W112
W113
24
Q39
D53
CN3
Q38
D46
IC13
IC15
D82
D33
Q22
Q42
Q32
D3
Q20
D22
CN2
D15
Q28
IC1
Q31
D41
D43
Q27
P1
CN1
Q24
Q25
D37
Q26
D36
D31
D14
IC2
D16
D18
D12
D52
D11
D13
D17
Q90
IC11
IC16
Q87
CN4
CN5
Q89
Q88
Q86
Q1
Q2
J2
Q4
Q3
A1
J4
J3
J1
IC4
X14-xxxx-xx (J74-1141-12)
SYNTHESIZER UNIT
(X13)
Ref.No. Address
IC1 2L
IC2 6L
Q1 2L
Q2 2L
Q5 4L
Q6 4L
Q7 5L
(X14)
Ref.No. IC1 IC2 IC4 IC10 IC11 IC13 IC16 Q1 Q2 Q3 Q4 Q17 Q18 Q20 Q21 Q22 Q23 Q24 Q25 Q26 Q27 Q28 Q29 Q30
Address 5R 4Q 2P 4Q 5O 5S 4O 2O 2P 2O 2O 3S 5Q 3S 4S 4S 4R 3R 3R 4R 4R 4R 4R 4R
Ref.No. Q31 Q32 Q33 Q34 Q35 Q36 Q37 Q38 Q39 Q40 Q41 Q42 Q44 Q45 Q71 Q72 Q86 Q87 Q88 Q89 Q90 Q91 Q92 Q95
Address 4R 3S 6S 6S 6S 5S 5T 5S 5R 6S 5R 5S 6S 5P 4Q 5Q 4O 4O 4O 4P 5N 5O 6O 4P
IC15
5S
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299