© 2005-3 PRINTED IN JAPAN
B53-0265-00 (N) 1708
CD RECEIVER
KDC-MP828
KDC-W7531/Y
KDC-W8531/Y
KDC-X789/X8529/X889
SERVICE MANUAL
24Bit DAC
KDC-W7531
PTY
FF
FF
AN
SCRL
VOL
VOL
AUD
AUD
ATT
SW
SW
AME
MENU
SCAN
REP
M.RDM
SRC
F.
D.RDM
S.MODE
RDM
System
PTY
VOL
AUD
ATT
FF
FF
AN
SCRL
SW
SRC
24Bit DAC
KDC-W8531
AME
TI
MENU
SCAN
REP
M.RDM
F.
D.RDM
S.MODE
RDM
System
24Bit DAC
KDC-X789
PTY/C.S.
FF
FF
AN
SCRL
VOL
VOL
AUD
AUD
ATT
SW
SCAN
REP
M.RDM
SRC
F.
D.RDM
S.MODE
RDM
AME
AUTO
MENU
System
VOL
AUD
ATT
FF
FF
AN
SCRL
SW
SRC
24Bit DAC
KDC-X8529
SCAN
REP
M.RDM
F.
D.RDM
S.MODE
RDM
System
AME
AUTO
MENU
24Bit DAC
KDC-X889
PTY/C.S.
FF
FF
AN
SCRL
VOL
VOL
AUD
AUD
ATT
SW
SW
SCAN
REP
M.RDM
SRC
F.
D.RDM
S.MODE
RDM
AME
MENU
AN
KDC-MP828
SRC
VOL
VOL
AUD
AUD
ATT
AME
AUTO
MENU
FF
FF
SCAN
S.MODE
REP
M.RDM
F.
SCRL
SW
SW
PTY/C.S.
D.RDM
RDM
AUTO
SPARE TDF PANEL
MAIN UNIT NAME
TDF PARTS No.
TDF NAME
KDC-MP828
Y33-2200-61
TDF-MP85D
KDC-W7531/Y
Y33-2190-64
TDF-W7531
KDC-W8531/Y
Y33-2190-63
TDF-W8531
KDC-X789
Y33-2190-61
TDF-75DX
KDC-X8529
Y33-2190-62
TDF-X8529
Mounting hardware assy
(J21-9716-03)
Plastic cabinet assy
(A02-2732-03)
* DC cord
(E30-xxxx-xx)
Lever
(D10-4589-04) x2
* Escutcheon
(B07-xxxx-xx)
KDC-MP828
KDC-W7531/Y
KDC-W8531/Y
KDC-X789
KDC-X8529
KDC-X889
KDC-X889
Y33-2190-60
TDF-85DX
* Tapping screw
(N09-xxxx-xx)
* Antenna adaptor
(T90-0523-05)
* DC cord
(E30-6412-05)
* Compact disc
(W01-xxxx-xx)
* Screw set
(N99-xxxx-xx)
* Remote controller assy (RC-527)
(A70-2067-05)
Battery
(Not supplied)
CD MECHANISM EXTENSION
CORD (24P) : W05-0934-00
A unique identification number (Unique ID) is given to each unit, which is imprinted on
the CD mechanism assembly. If and when the mechanism assembly or Flash ROM
(IC17) on the mechanism board is replaced, it is necessary to write the Unique ID.
For details, refer to "How to Write the Unique ID" on Page 18.
* Depends on the model. Refer to the parts list.
This product uses Lead Free solder.
2
KDC-MP828/W7531/W7531Y/W8531
/W8531Y/X789/X8529/X889
BLOCK DIAGRAM
AM+B
FRONT-END
A1
CN550
CD/MD
J2
LX-BUS
SW5V
A8V
A8V
AGC
E-VOL/
SOURCE SELECTOR
LPF
DSP
DAC
LPF
A3.3V
A5V
D3.3V
D5V
BU5V
A8V
A3.3V
REF+B
SVR REF
PRE
MUTE
AMP
OP
IC
POWER
9V
PRE OUT
PRE OUT
PRE OUT
AUX IN
SHIFT
LEVEL
D3.3V
IC304
IC303
IC301,302
IC306-308
IC305
IC1
IC5
IC3
IC4
IC800
Q800,802
Q608-613
Q801
IC750
IC500
Q402,403
IC300
IC601-603
IC103
DRIVER
MUTE
BU5V
IC102
RDS
DECODER
IC400
IC100
MD-DET
MEMORY
INSTALLER
ROM CORRECTION
IC104
SW5V
BU5V
A8V
D5V
SERVO
Q450
DSI
BU5V
UP
BACK
RESET
IC
(X16-252)
BU5V
SYSTEM u-COM
OPEL DISP
P-CON
ANT-CON
EXT AMP
ACC DET
DIMMER
SURGE DET
B.U DET
Q20,21
BU5V
SW16V
Q50-52
Q41,43,44
ILL+B
SW14V
IC10
A8V
Q12
IC601-603
DC/DC
(5VPRE)
+B
MOTOR
Q30,32
42,45
PANEL
5V
(VFD)
SERVO
IC80
FL DC
Q31,33
DC/DC
IC60
DRIVER
MOTOR
IC450
CD5V
Q63,64
SW5V
Q22,23
MECHA
PANEL
M1
CLOSE
OPEN/
DET
Q100,101
P CON
ANT CON
EXT.AMP.CON
DIMMER
ACC
BACK UP
LINE
PANEL
SP OUT(FR)
SP OUT(RL)
SP OUT(FL)
SP OUT(RR)
REMOTE
IC8
LEVEL SHIFT
D3.3V
IC11
SW5V
Q7,8
D2.5V
IC10
Q11,13
FL+B
Q9,10
FL3.3V
FL
Q6
SW3.3V
PANEL
u-COM
IC4
IC7
RESET SW
IC5
IC1
S1
FLASH ROM
ENCODER
ROTARY
IC2
ANALYZER
SPECTRUM
IC6
REMOTE
KEY ILLUMI
Q3-5
BU5V
SW5V
SERVO
D5V
A8V
9V
ILL+B
Q40,
ED1
ILL+B
(SW)
(FRONT)
(REAR)
WIRED
LEVEL SHIFT
Q205
Q203,204
Q202
Q207
Q206
Q208,209
IC200
KEY MATRIX
E2PROM
FST
FM/AM
AUX
CH
CDorMD
SPECTRUM
MUTE A,C
MUTE 0,1
WININ
OFFSET
RST
MUTE
A,C
STBY
for
MPX
RDS
RST
ANALYZER
SPECTRUM
MUTE
0,1,2
ANALYZER
PANEL
TR COIL
FO COIL
C
F
AB
E
PD
LD
SERVO DSP
MOTOR
DRIVER
SP MOTOR
LOADING &
MOTOR
SLED
IC4
IC2
u-COM
IC1
MP3/WMA/AAC
IC15
IC5
3.3V REG.
3.3V REG.
IC21
1.8V REG.
IC20
IC19
3.3V REG.
IC14
5V REG.
SW
DAC
3.3
5V
3.3
5V
3.3
5V
3.3
5V
LPF
IC18
IC13
16MBIT
SDRAM
IC16
ROM
FLASH
IC17
4MBIT
D5V
S7.5V
A8V
BU5V
RF AMP
DECODER
ACD DECODER
16.898MHz
SW3.3V(712)
S7.5V
RESET
SCK
SI
STB
A0
SO
INTQ
POWER ON
26.88MHz
BU3.3V
D5V
FLAG
C16M
BCLK
DATA
LRCK
SW3.3V
SW3.3V
SW1.8V
(CS7410)
(CS7410)
(712)
POWER ON
BU3.3V
SW5V
BU5V
A8V
RESET
DATA MUTE
SREQ
BREQ
DO
CS
CLK
DI
PCM DATA
PCM BCLK
PCM XCK
PCM LRCK
DAC RST
DAC MUTE
INFINITY 0 DET.L/R
SER/GPIO
L/R
AUDIO MUTE
I2C
MSTOP,MRESET
LOE/LIM SW
8EJE-SW
LOS-SW
12EJE-SW
L/R
SW3.3V(712)
CONTROLLER
MEMORY
8BIT
0-2MB
ROM
DRAM
256k-8MB
4,8,16BIT
(CS7410)
SW3.3V
2x512kx16BIT
512kx8BIT
SW3.3V
(CS7410)
SW5V
EMPH
I2S
CD I/F
DAC CONTROL
SW3.3V
(CS7410)
SW1.8V
&
CD PLAYER UNIT (X32-5730)
KDC-MP828/W7531/W7531Y/W8531
/W8531Y/X789/X8529/X889
3
COMPONENTS DESCRIPTION
ELECTRIC UNIT (X34-3xxx-xx)
Ref. No.
Application / Function
Operation / Condition
IC1
DSP ANALOG POWER SUPPLY
3.3V output
IC3
DAC DIGITAL POWER SUPPLY
5.0V output
IC4
DAC ANALOG POWER SUPPLY
5.0V output
IC5
DSP DIGITAL POWER SUPPLY
3.3V output
IC10
AUDIO8V REF POWER SUPPLY
1.27V output
IC60
SWITCHING REGULATOR CONTROLLER
VFD / Mechanism digital power supply.
OUT1 : VFD (4.7V), OUT2 : Mechanism digital (5V)
IC80
FL+B
VFD power supply (57V)
IC100
RESET IC
"L" when detection voltage is 3.6V or less
IC102
SYSTEM
µ-COM
FM/AM tuner / Changer / CD mechanism / Panel / Volume / Tone control
IC103
MUTE DRIVER
Mute control
IC104
E2PROM
Installer memory
IC200
POWER CONTROL IC
Power control switching
IC300
E-VOL & SOURCE SELECTOR
Source / Volume / Tone control
IC301,302
AUDIO BUFFER AMP
DSP input LPF
IC303
DSP
Digital signal processing
IC304
LEVEL SHIFT
Conversion from 3.3V to 5.0V
IC305
DAC
D/A Converter
IC306~308
AUDIO BUFFER AMP
DAC output LPF
IC400
RDS DECODER
IC450
PANEL MECHA MOTOR DRIVER
IC451
G-ANALYZER
Analog gravity sensor
IC500
SPECTRUM ANALYZER BUFFER AMP & AGC
Spectrum analyzer buffer / Auto gain control
IC600
±9V AVR
5V pre-out power supply
IC601~603
5V PREOUT AMP
Buffer/Gained control
IC750
POWER IC
Front L/R and a rear L/R signal amplification
IC800
AUDIO3.3V REF SUPPLY / SVR6.8V REF SUPPLY
Supplying audio 3.3V reference voltage to E-VOL/LPF
Supplying SVR6.8V reference voltage to IC750 (POWER IC)
Q10,11
AUDIO8V AVR
When Q11 base is "H", A8V is output
Q12
SW14V
When base is "H", SW14V is output
Q20,21
B.U.5V AVR
When backup is "ON", BU5V is output
Q22,23
SW5V
When Q23 base is "H", SW5V is output
Q30,32
MOTOR+B AVR (PANEL MECHA)
When Q9 base is "H", 7.5V MOTOR+B is output
Q31,33
SERVO+B AVR
When Q33 base is "H", 8V SERVO+B is output
Q40,42,45
PANEL5V AVR
When Q42 base is "H", PANEL5V is output
Q41,43,44
ILLUMINATION AVR
When Q43 base is "H", 10.5V ILLUMI voltage is output
Q50~52
SW16W (SERGE PROTECTION)
When Q51 base is "H", SW16V (13V) is output
IN1
IN2
PANEL MECHA
LL
WAIT
LH
OPEN
HL
CLOSE
HH
STOP
4
KDC-MP828/W7531/W7531Y/W8531
/W8531Y/X789/X8529/X889
COMPONENTS DESCRIPTION
Ref. No.
Application / Function
Operation / Condition
Q60
VFD (4.7V) AVR SW
When base is "H", VFD AVR is turned "OFF"
SWITCHING REGULATOR FREQUENCY
Q61
CONTROL SW (IC60)
Q62
MECHA DIGITAL AVR SW
When base is "H", MECHA DIGITAL AVR is turned "OFF"
Q63
VFD (4.7V) AVR SWITCHING POWER DRIVER
Controlled by IC60 and Q61 determines frequency
Q64
MECHA DIGITAL AVR POWER DRIVER
Controlled by IC60 (Frequency is fixed to 400kHz)
Q80,81
VFD (57V) AVR SW
When Q81 base is "H", VFD (57V) is output
Q91
PANEL5V DISCHARGE SW
When base is "H", PANEL5V is discharged
Q100,101
PANEL DETECT SW
When Q100 base is "L", panel is detected
Q200,201
PREOUT MUTE DRIVER
When base is "L", MUTE DRIVER is turned "ON"
Q202
ACC DETECT SW
When base is "H", ACC voltage is detected
Q203,204
SERGE DETECT SW
When Q204 base is "H", IC750 (POWER IC) is turned to standby.
Q205
BU DETECT SW
When Q35 base is "H", backup voltage is detected
Q206
EXT AMP CONTROL BUFFER
Output buffer from IC102 (
µ-COM)
Q207
SMALL LAMP DETECT SW
When base is "H", small lamp is detected
Q208,209
POWER ANTENNA SW
Q206 base is "H", 14V POWER ANTENNA voltage is output
Q300
DSP MUTE SW
When base is "L", DSP is muted
Q402,403
AM+B SW
When Q403 base is "H", AM+B is output
Q450
DSI DRIVER
When base is "H", DSI is turned "ON". When base is "L", DSI is
turned "OFF". When panel is off, DSI blinks.
Q500
SPECTRUM ANALYZER AGC CONTROLLER
When excess input is made, feed-back is interrupted which slows down output.
Q600~602
PRE-AMP +9V AVR
Q600 and Q602 function as differential amplifier.
Q601 functions as a driver and +9.4V is supplied to op amp for pre-out.
Q603~605
PRE-AMP -9V AVR
Q603 and Q605 function as differential amplifier.
Q604 functions as a driver and 9.1V is supplied to op amp for pre-out.
Q606,607
AUDIO 10.5V AVR
When Q606 base is "H", 10.5V is output
Q608~613
PREOUT MUTE SW
When base is "H", pre-out is muted
Q800,802
REF+B AVR
When Q800 base is "H", 13V is output
Q801
SVR6.8V REF SUPPLY AGC CONTROLLER
When backup voltage is down, feed-back is interrupted which slows down output.
SWITCH UNIT (X16-2950-1x / X16-3122-71)
Ref. No.
Application / Function
Operation / Condition
IC1
ROM IC / FLASH ROM IC
Display image data storage
IC2
SPECTRUM ANALYZER
6-ch band pass filter
IC4
PANEL
µ-COM
IC5
RESET IC
Functions when panel is attached
IC6
REMOTE CONTROL
IC7
LEVEL SHIFT
Conversion from 5V level to 3.3V
IC8
LEVEL SHIFT
Conversion from 3.3V level to 5V
F SEL2 (BASE)
F SEL1
LH
(BASE)
L
400kHz
600kHz
H
650kHz
850kHz
KDC-MP828/W7531/W7531Y/W8531
/W8531Y/X789/X8529/X889
5
COMPONENTS DESCRIPTION
Ref. No.
Application / Function
Operation / Condition
IC9
BUFFER
Functions when controlling fruorescent indicator tube (ED1)
IC10
2.5V REGULATOR
For 2.5V power supply
IC11
3.3V REGULATOR
For 3.3V power supply
Q1
TRIANGLE GREEN LED SW
Lights up when base is "H"
Q2
TRIANGLE RED LED SW
Lights up when base is "H"
Q3
BLUE LED SW
Lights up when base is "H"
Q4
GREEN LED SW
Lights up when base is "H"
Q5
RED LED SW
Lights up when base is "H"
Q6
SW3.3V SW
When base is "L", SW3.3V is supplied to IC1 and IC3
Q7,8
SW5V SW
When Q8 base is "H", SW5V is supplied to IC2 and IC6
Q9,10
FL3.3V SW
When Q9 base is "H", FL+3.3V (VDD1) is supplied to fruorescent indicator tube
Q12
FL BLK SW
When base is "H", fruorescent indicator tube (ED1) lights up
Q11,13
FL+B SW
When Q11 base is "H", FL+B (VDD2) is supplied to fruorescent indicator tube
CD PLAYER UNIT (X32-5730-00)
Ref. No.
Application / Function
Operation / Condition
IC1
µ-com for mechanism control
IC2
LSI for CD signal processing +RF AMP
IC4
BTL driver
SP, SL (including LO/EJ) motor and PU actuator
IC5
SW3.3V regulator
3.3V power supply for IC2, PU, and IC18 digital section
IC13
Audio active filter
Secondary LPF
IC14
A5V regulator
5V power supply for DAC
IC15
Compacted audio decoding DSP
AC drive decoder, MP3/WMA/AAC decoder
IC16
Compacted audio expanding SDRAM
IC17
Decoder software, unique ID storage flash ROM
IC18
Audio external 24-bit D-A converter
IC19
BU3.3V regulator
3.3V power supply for
µ-com
IC20
1.8V regulator
1.8V power supply for core section of IC15
IC21
Decoder/SDRAM/Flash ROM 3.3V regulator
3.3V power supply for port section of IC15, IC16 and IC17
Q1,4
Level shift (3.3V~5V) FET
Q3,5,6
Level shift (3.3V~5V) transistor with 2 elements
Q7
Level shift (3.3V~5V) transistor
Q8
APC (Auto Power Control) transistor
Q9,10
Transistor for preceding beam delaying SW during non-search
Q11
A5V power supply constant circuit FET
Q12,13
SW8V SW transistor
Q14,15
SDRAM 3.3V power supply SW transistor
SDRAM power supply is turned off when /CSRST is "L"
D2
UPD63712GC built-in resetting terminal static protection diode
D3
Protection diode for pick-up laser diode
D4,D5
Diode for securing audio L-R reference voltage
D6
Diode for control terminal's "L" confirmation for IC20 and IC21