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A B C D E

KDC-7024/Y,722,8023
1
PC BOARD (COMPONENT SIDE VIEW)
ELECTRIC UNIT X25-966x-xx (J74-1474-12)


CN1
CN2 12 2 IC4
11 1
2
R32
R31




1 2 24
R43




R55
R44




R56



C100
2 9 16 1 25
BE




Q12 C2
8 1
R112




D1
BE J1 L1
Q11
C6




C32 C34 C31 C33
C256
E




R127
D6




Q24
Q13




B E C2
B




C7
C8




Q25 C128 C126
R125



R143
R126




R105 W1
R129
R128
B E
E




I G O BE
Q8




IC3 Q26
L6 C250
D13
B




Q4




C253
C254
D3
C102




3 CN3
BE
E




Q5
BE
C108




R46
R48
Q1




R300
C50




16
EB
B




Q60 22 12 C1 C2 15
D14 23 11
C104




Q59
EB




C49

C252
R23 R47
E




D15 R45 IC2 D25 D26
R21
C41
Q9




D4




D16
C105




D17




EB




Q55 33 1
B




34 44
C42




Q56
EB




C109
R36 R24




C132
C131




R22
R139




R34
R140
C46




R250
4
EB




TEST R268
R138




R141 Q58
EB Q32 Q57
EB




C45




R201




25 1 L5
R35




X2
R253 R252


26 100
R251


7 1 R33
X25-966x-xx
R257
C213




R283
R206
R205
R209
R208




R275




IC8 R102
R202 IC Q Address
IC1
R103 1 4C
R200




R256




8 14 X1
R265
R282



R210
R204
R203
R211




EB
R259
R260




C200 2 4C
Q3 50 76 R234
51 75 R235 3 3A
5V R236
RST
L4 R262 R237 4 2E
R217
R228
R230
C207
C208
D20




8 4B
R207




R216
R218
R219
R220




5
15 5C
R214




1 8
R215




C110 1 3A
IC5 IC15
4 5 3 5B
DATA CLK 24 CN4 1
4 3B
5 3B
C112
1 5 8 3A
1 28
CN6
9 4A
C111
11 2A
C700
CN5 15 1 12 2A
6 13 2A
L2 C113 24 2B
P1




25 3D
26 3C
32 4B
55 4B
56 4B
59 3B
60 3F
102 3F
7
Refer to the schematic diagram for the values of resistors and capacitors. 104 4F

12
F G H I J

KDC-7024/Y,722,8023
1



SUB-CIRCUIT UNIT SWITCH UNIT
X16-2140-10 (J74-1479-02) X16-2190-10 (J74-1484-12)




D12
D16 D17




S15




S14
24




D13




TUN
25 W2 2
D31


D29
D30




73




72
C257 C258




S9
S10
6
C33 A1
R307
R303




D6
R302 1
C255 L7
C5




S5
5




FM
S4
D5
R403
R402




CN3 BE
Q102
3




S19
AM
S3
4
2 1 CN7
2
1 C410




D4
L11




RST

S20
L13




S8
R407 Q104




3
R406




D9
BE
C411




D3
R405 R404




SCRL

S12
L12
X3




24 4




S13




D8
2




D14
D2




AUTO

S7
D7
S18
1


Q1




EB
D15
D1



Q3




D11
BE




SRC
S17
D20




MENU
Q2




S2
BE
5
D19
CONTROL
VOLUME
S21




D18
ATT
S1
144




1




D16




6
D19 D18


3 4
S11




D11
IC3
S6




1 2
D10
D17




X16-2140-10 X16-2190-10
IC Address Q Address
3 6H 1 5J 7


13
K L M N O

KDC-7024/Y,722,8023
1
PC BOARD (FOIL SIDE VIEW)
ELECTRIC UNIT X25-966x-xx (J74-1474-12)

GND




D36

D35

D34

D33




R148



R147
BU
C101
BU
D37

D38

D39

D40
2 TH1
D66




D12

D11

D9
R306


BU
R305
GND


Q28 Q27
D51




C127




R130
D50 E B
C3
B E
8V D52
C4
C401




R3
R1
R2
AM+B




D54 D55 C251
E B
R308
R311


R309
R310
AUDIO-OUT




D53
3 R317
Q103 R G L
R319
R318
R312
C403


PLL+B




R316 C12
R314 C10
C71 R7 C11
VDD




Q2
M1-
M1+




R61 R313




R8




R135 R132
C9
C405




R315
C409




E B B
C408




C129
R134
GND




C16
C15
C22
C21
R301 Q53
C412 C413




8 1 R133
AGND
C130