© 2002-11 PRINTED IN JAPAN
B53-0001-00 (N) 2139
DC cord
(E30-4790-05)
Lever
(D10-4589-04)x2
Antenna adaptor
(T90-0523-05)
Screw set
(N99-1719-05)
Depends on model. Refer to the parts list
Screw set
(N99-1610-15)
Mounting hardware assy
(J21-9716-03)
Plastic cabinet assy
(A02-1486-13)
COMPACT
DIGITAL AUDIO
RDM
LOUD
REP
SCAN
OFF
KDC-XXXX
PTY
AUD
50Wx4
Panel assy
(A64-2872-02): KDC-3023R
Front glass
(B10-4341-01): KDC-3023R
CD MD-Changer Control
M. RDM
SCRL
VOL. ADJ
TI
MENU
CLK
(A64-2875-02): KDC-4024/V/Y/YV
(B10-4344-01): KDC-4024/V/Y/YV
Escutcheon
(B07-3001-02)
CD RECEIVER
KDC-3023R
KDC-4024/V/Y/YV
SERVICE MANUAL
CD mechanism operation description is not in this sarvice manual.
Please, refer to sarvice manual X92-4030-0x (B51-7867-00).
CD mechanism extension cord : WO5-0618-00
KDC-3023R,4024/V/Y/YV
2
BLOCK
DIAGRAM
1200mV
1200mV
CD : 3600mV
CH : 3600mV
AM(E) : 855mV
FM(E) : 1372mV
FM(J,K) : 1800mV
AM(J,K) : 600mV
CHANGER
KEY MATRIX
WITH
LCD DRIVER
LCD
REMOCON
MI-COM
CD
ANT
AM AGC
FM AGC
DECODER
RDS
RESET
IC
EEP-ROM
TUNER,MPX &
E-VOL.
SUPPLY IC
SW5V
SERVO
P-ANT
P-CON
POWER
MUTE
LOGIC
DET
ACC
BU
DET
MUTE
PRE
POWER IC
SP
ACC
UP
BACK
OUT
OUT
PRE
IC1
DATA H
MUTE
DATA C
REQ H
CH-CON
AUDIO OUT
CLK
REQ C
RST
BACK UP
BU5V
IC2
SW5V
LO/S
RST
LOE/LIM
MO
LO/EJ
STOP
MUTE
8EJE
SDA
SCLK
AUDIO OUT
12EJE
Q501
Q502
AM+B
FM+B
AM AGC OUT
IC6
CH
CD
SERVO
BU5V
A8V
TUNER
OUT
BU5V
IC11
IC12
IC10
FM AGC OUT
A8V
SW2
SW1
ILLUMI
VCC
BU5V
AUDIO+B
AM+B
FM+B
BA
CK
LIGHT
KEY
ILLUMI
Q51,55
SW5V
Q50
SERVO
BU5V
FM+B
AM+B
A8V
P-CON
P-ANT
IC8
Q20
Q10
IC7
MUTE
Q223,224
IC4
KDC-3023R,4024/V/Y/YV
3
q SWITCH UNIT (X16-1472-7x)
COMPONENTS DESCRIPTION
Ref.No.
Application/Functions
Operation/Condition/Compatibility
IC1
LCD driver & key matrix
IC2
Remote Sencer
Q1
Key scan start
When Q1 base goes Lo, key scan start.
Q2,Q3
Key illumi SW
When Q2 base goes Hi and Q3 base goes Lo, key illumination is Green.
When Q2 base goes Lo and Q3 base goes Hi, key illumination is Red.
q ELECTRIC UNIT (X25-961x-xx)
Ref.No.
Application/Functions
Operation/Condition/Compatibility
IC1
System control µ-com
System µ-com
IC4
Power amplifire
E-Vol output encoder power amplification for speaker.
IC6
RDS decoder
RDS data decode to tuner receive signals.
IC7
Power supply (Multi AVR)
-
When a pin 1, 2, or 13 is "H", MUTE turns on
IC8
MUTE Logic
When a pin 3, 4, or 5 is "H", P-AMP mute turns ON.
Changer is RESET when a pin 9, 10, or 11 is "L".
IC10
Tuner & E-Vol.
FM/AM tuner & stereo decoder & E-Vol.
IC11
Power on reset
When B.U. 5V voltage is less than 3.5V, power reset.
IC12
E2P-ROM
Writing and read-out of adjustment data for a tuner
Q10
B.U. detector
BU on (base "H") : Collector "H"
Q20
A.C.C detector
ACC ON (base : "H") : Collector "L"
Q40
MUTE driver
Base "L" : Mute on (collector "L")
Q50
SW 5V
Base "L" : SW5V on
Q51
SERBO AVR control
Pin 2 "H" : Serbo on (pin 4 "H")
Q55
SERBO AVR
Base "H" : Serbo on
Q70
Surge detector
Base "H" : Surge detect
Q101
DSI driver
Base "H" : DSI on
Q102
PANEL 5V SW
Panel attch : PAN5V on
Q201
Noise buffer
Tuner noise input, Emitter output
Q223,224 MUTE
Base "H" : Mute on
Q252
S_METER RC & MPTH TC SW
Base "H" : RC&TC=Long (Base "L" at AF serch)
Q253
S_METER RC & MPTH TC SW
Emitter "H": Collector "H"
Q501
AM RF amplifire
Base "H" : Gain UP
Q502
FM RF amplifire
Gate "H" :Gain UP
Q503
MPX buffer
MPX input buffer with RDS
KDC-3023R,4024/V/Y/YV
MICROCOMPUTER'S TERMINAL DESCRIPTION
4
q SYSTEM MICROCOMPUTER uPD780058GC502 (X25 : IC1)
Pin No.
Name
I/O
Description
Processing Operation
1
TDF DET
I
Panel detection
H:Panel detached L:Panel attached
2
8EJE SW
I
H:Eject is completed
Except 8cm CD model:always output L
3
NC
O
Not used (out put L)
4
Avss
H:Panel detached L:RESET
5
L-RST
O
LCD driver RESET
3 normal H , Power off L
When 7seg model,output L
6
L-CE
O
LCD driver selection
H:Select (panel communication)
When panel attached,output L
7
AVREF1
8
NC
Not used (connected to 9pin)
9
IC10-DATA
I/O
IC10,E2PROM data communication
3 non communication : H
10
IC10-CLK
O
IC10,E2PROM clock communication
3 non communication : H
Non communication : H
11
L-DATAL
I
Data input from the LCD driver
When panel detached : L
3 Pull down on X25 unit,Pull up on X16 unit
12
L-DATAS
O
Data output to the LCD driver
When panel detached , output L
13
L-CLK
O
Clock output to the LCD driver
When panel detached , output L
14
R-DATA
I
Data input from the RDS
Except RDS model : output L
15
R-QUAL
I
Quality input from the RDS
Except RDS model : output L
16
CH-DATAC
I
Data input from the changer (new 5L)
Except changer model : output L
17
CH-DATAH
O
Data output to the changer (new 5L)
When non communication ,last data keeping
Except changer model : output L
18
CH-CLK
I/O
Clock input/output with the Changer (new 5L)
Check the old and new
Except changer model : output L
19
CH-REQH
O
Request output to the changer (new 5L)
L:Requset
Except changer model : output L
20
NC
O
Not used (output L)
21
AFS
O
Noise detection time constant switching terminal
H:Normal L:FM/AM seek and AF search
3 (When tuner SRC auto zero , L)
22-24
NC
O
Not used (output L)
25
CH-CONT
O
Changer control
H:Changer on L:Changer off
Except changer model : output L
26
TYPE REF
O
5V lines output for destination setting
H:During destination reading
27
SD
I
Tuner SD input
H:Station detected
28
NC
O
Not used (output L)
29
TYPE2
I
Destination type selection terminal 2
Refer to destination type list.
30
TYPE1
I
Destination type selection terminal 1
Refer to destination type list.
31
TYPE0
I
Destination type selection terminal 0
Refer to destination type list.
32
TUNER-TYPE1
I
Destination available/genuine model rool off
H:genuine model 1 L:available model
33
Vss1
34
TUNER-TYPE0
I
Destination available/genuine model noise cancel H:genuine model 0 L:available model
35
MUTE
O
Mute (E.Vol,Preset) control
H:mute on L:mute off
Power off after that 15 second L
36
M-DATA
I/O
Data input/output with the CD mechanism
3 non communication : H
37
M-CLK
O
Clock output to the CD mechanism
3 non communication : H
When adjustment = H
38
ADJ
O
Tuner lines adjustment
PS1-0,1=L
PS1-2,2-0,1=Hi-z
IC10-DATA,CLK=Hi-z
39
P-MUTE
O
Power IC mute control
H:mute off L:mute on
Power off after that 15 second H
40
SVR
O
Power IC servo control
H:When momentary power down detected
L:Nomal
41
P-STBY
O
Power IC standby control
H:Power IC ON L:Power IC OFF
42
SW5V
O
SW 5V control
H:SW5V OFF L:SW5V ON
Power off after that 10 second H
KDC-3023R,4024/V/Y/YV
MICROCOMPUTER'S TERMINAL DESCRIPTION
5
Pin No.
Name
I/O
Description
Processing Operation
43
B.U-DET
I
Back up detection terminal
H:power down L:B.U. on
44
ACC-DET
I
ACC detection terminal
H:ACC OFF L:ACC ON
45
PS1-0
O
Power supply IC SW1 control 0
Audio 8V,P-CON
46
PS1-1
O
Power supply IC SW1 control 1
Audio 8V,P-CON
47
PS1-2
O
Power supply IC SW1 control 2 P-ANT
Power supply IC SW2 control 0
48
PS2-0
O
ILL,FM,AM
Power supply IC SW2 control 1
49
PS2-1
O
ILL,FM,AM
50
BEEP
BEEP
H:Light on L:Light off
51
DSI
O
DSI control
When panel attached,output L
When panel detached,flashing at the panel (H/L)
FIX model is output L
52
NC
O
Not used (out put L)
53
NC
O
Not used (out put L)
54
LOE/LIM SW
I
CD mechanism down&limit detection
H:Chucking detection L:Normal
55
MO SW
O
CD mechanism loading motor control output
H:Loading,Eject,Break L:Play
56
LO/EJ
I/O
CD mechanism loading/Eject switching terminal H:Eject L:Loading
57
M-STOP
O
Stop output to the CD mechanism
H:Play L:Stop
58
M-RST
O
Reset output to the CD mechanism
H:Normal L:CD mechanism reset
59
M-MUTE
I
Mute input from the CD mechanism
H:mute off L:mute on
60
RESET
Reset input from the System microcomputer
61
REMO
I
Remote control input
62
R-CLK
I
RDS clock input
Except RDS model : output L
H:Changer detection
63
CH-REQC
I
Request input from the changer (new 5L)
L:Request
Except Changer model : output L
64
LOS SW
I
CD mechanism loading's switch detected
H:No disc
L:DISK IN(Loading Start)
65
KEY-REQ
I
Key input detected
H:Key no input
(11pin L connected to the DATA L)
L:Key input (edge key data reading start)
66
12EJE SW
I
12cm disc detected
L:12cm disc
67
Vss0
68
VDD1
69
X2
3 MAIN X'tal oscillating circuit
3 4.19MHz X'tal connection
70
X1
3 MAIN X'tal oscillating circuit
3 4.19MHz X'tal connection
71
IC
TEST
72
XT2
Not used
OPEN
73
XT1
74
VDD0
VDD
Connected to VDD
75
AVREF0
A/D converter reference voltage control output,
connection to the 80pin AVCONT
76
S-METER
I
S-meter input
77
NOISE
I
FM noise detection input
3
2.5V or greater:NAVI MUTE
78
PHONE
I
2way mute
1.0V or less:TEL MUTE
Except phone mute model : output L
79
NC
O
Not used (out put L)
80
AVCONT
O
A/D converter standard voltage control output
H:During A/D converter active
same timing with PON
BA4911 SW1
Power supply IC output
PS1-2
PS1-1
PS1-0
A8V
P-CON
P-ANT
L
L
L
STANBY
LL(H)
H(L)
ON
OFF
OFF
L
H
H
ON
ON
OFF
H
H
H
ONONON
BA4911 SW2
Power supply IC output
PS2-1
PS2-0
ILLUMI
FM
AM
L
L
STANBY
L(H)
H(L)
ON
ON
OFF
H
H
ON
OFF
ON