Kenwood KDC-W6531 User manual

© 2005-2 PRINTED IN JAPAN
B53-0240-00 (N)1708
CD RECEIVER
KDC-W6531/W6531Y
/X589/X7529
SERVICE MANUAL
This product uses Lead Free solder.
Plastic cabinet assy
(A02-2732-03) Lever
(D10-4589-04) x2
Screw set
KDC-X589:
(N09-6212-05)
KDC-X7529/W6531
/W6531Y:
(N09-6280-05)
DC cord
(E30-6412-05)
Screw set
KDC-X589:
(N99-1723-05)
KDC-X7529:
(N99-1758-05)
Mounting hardware assy
(J21-9716-03)
Remote controller assy
(A70-2067-05)
MODEL TDF PANEL No. TDF NAME
KDC-X589 Y33-2180-60 TDF-55DX
KDC-X7529 Y33-2180-65 TDF-X7529
KDC-W6531/W6531Y Y33-2180-63 TDF-W6531
TDF PANEL INFORMATION
Size AA battery
(Not suplied)
DC cord
(E30-6408-05)
Compact disc
KDC-X589/X7529:
(W01-1643-15)
KDC-W6531/W6531Y:
(W01-1647-15)
Antenna adaptor
(T90-0523-05)
KDC-X589
KDC-X7529
KDC-W6531
KDC-W6531Y
Panel assy
(A64-3498-12)
Panel assy
(A64-3503-12)
Panel assy
(A64-3511-12)
Escutcheon
(B07-3125-01)
Escutcheon
(B07-3125-01)
Escutcheon
(B07-3125-01)
Depends on the model.
Refer to the parts list.
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 15.
RC-527

2
KDC-W6531/W6531Y
/X589/X7529
BLOCK DIAGRAM
F/E A8V
AM+B
SW5
RDS SW5
LX-BUS
BU
AUX
E-VOL
IC2
CD MECHA
SERVO+B
A8V BU5V
CD5V
3.3VREF.
PRE+B
A8V
A8V
4VPRE-REF.
AM+B
IC9
IC11
Q300
A8V
AM+B
SYSTEM u-COM
OPELDISP
MARINEDISP
BU
PW-IC
PW-IC SVR
SP-OUT
MUTE
PRE-OUT
IC10
EEPROM
SW5
Q400-405 PRE-OUT(2V/4V)
IC902
3.3VREF.
SVR/ SVR+B
A8VPW-IC SVR
3.3VREF.
Q107
EXT-AMP
PHONE
ACC-DET
Q112
DIMMER
Q108
SURGE
Q109
PAN/
PANEL
Q7
BU5V
IC12
PCON-SW
Q1
Q103
BU-DET
Q111
4V
ILL+B
Q15
IC5
SVR+B
Q9
SW14V
Q4
SW5V
Q3
ANT-SW
Q101
CD SERVO
Q9
PAN
Q18
A8V
Q5
PAN5V
Q13
DC-CN
BU5PAN5V
ILL+B
A8V
PRE+B
SVR+B
SERVO+B
CD5V
BU5
SW5
P-M+B
ILL+B
M+B
PRE+B
CD5V
DET
TYPE-SW
OEM TYPE-SW
MUTE
BU5 BU5
DC-CN etc
GUIDE ILL
DSI/ BU5
EEP-DET
MECHA
SLIDE
DET
MOTOR
DRIVER
P-M+B
RST
IC7
IC8
BU5
PAN5 ILL+B
CN/FPC
MECHA
SLIDE
CN-DET
RESET ENCODER
ROTARY
REMO SW5V
SW
SW F+/F-
DISP BLACK
FL DRIVER
ILL
KEY-ILLUMI
SW ILLUMI
KEY MATRIX
KEY
FL
IC2-6
IC1
MOTOR+B
SW5 Q1
IC1
Q6
PAN5
PAN5
Q2 F+/F-
FL+B OUT SW
Q4,5
IC4
IC2
FST DXM6580W
DXM6800W
3
8
2
8
2
4321043
5
R/R
R/L
F/R
F/L
2
FRONT
REAR
SUB-WOOFER
P ON
PON ILL
P ON
PON PAN CD
P ON
ANT CON P CON
BU
EXT-CONT
ACC
ILLUMI
PHONE
P-ANT
P-CON
B.U.
MUTE DC-DET
PON PAN
(PWR OFF ONLY)
DET
EXT CONT
PHONE
ACC DET
DIMMER
2
3
2
PW-IC E-VOL
RST
BU DET
EXT CONT/PHONE
DIMMER/ACC DET
P CON/PON
BU DET/ANT CON
PON PAN CD/PON ILL
PON PAN
11
52
SW
FUNCTION
55
9
P ON
ELECTRIC UNIT (X34-342x-xx/3762-70)
(X16- )

KDC-W6531/W6531Y
/X589/X7529
3
BLOCK DIAGRAM
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
DOCS
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)
COMPONENTS DESCRIPTION
●SWITCH UNIT (X16-2920-1x/3142-70)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 VFD Driver
IC2 Remote Control IC
Q1 SW5 The power supply for IC2 is turned on when Q1’s base level goes “L”.
Q2,Q3 FL+ SW The power supply for filament is turned on when Q3’s base level goes “H”.
Q4 GREEN LED SW GREEN LED is turned on when Q4’s base level goes “H”.
Q5 RED LED SW RED LED is turned on when Q5’s base level goes “H”.
Q6,Q7 VFL SW The power supply for IC1’sVFL is turned on when Q7’s base level goes “H”.
Q8 GREEN LED SW GREEN LED (TRIANGLE LED) is turned on when Q8’s base level goes “H”.
(TRIANGLE LED)

4
KDC-W6531/W6531Y
/X589/X7529
COMPONENTS DESCRIPTION
●CD PLAYER UNIT (X32-5730-00)
Ref. No. Application / Function Operation / Condition / Compatibility
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
●ELECTRIC UNIT (X34-342x-xx/3762-70)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 System µ-com
IC2 E-vol IC
IC3 Regulator IC for A8V
IC4 Power IC
IC5 Regulator IC for ILL+B (10.65V)
IC6 Logic IC for muting
IC7 Reset IC
IC8 Motor Driver IC for Slide panel mecha
IC9 RDS Decoder IC
IC10 Rom IC for Installer-Memory and Rom-Correction
IC11 AMP for 4V Pre-Out Ref.
IC12 Switching regulator IC for CD mecha D5V and FL filament
IC902 AMP for Power IC SVR and E-vol IC 3.3V Ref.
Q1,2 B.U.5V AVR While BU is applied, BU5V AVR outputs 5V.
Q3,11 SW5V When Q11’base goes Hi, SW5V outputs 5V.

KDC-W6531/W6531Y
/X589/X7529
5
COMPONENTS DESCRIPTION
MICROCOMPUTER’STERMINAL DESCRIPTION
●MECHANISM MICROCOMPUTER 91CU27UG5UR8 (X32-573 : IC1)
Pin No. Pin Name I/O Application Processing Operation Description
1VREFL I ADC reference power supply input terminal (L) GND
2DMUTE O Driver MUTE L : STOP, H :MUTE OFF
3CSRST O (Decoder) Resetting control L : RESET, H : NORMAL
4NCONot used. Open output L-fixed
5LZM I 0bit MUTE detection (Lch) L : MUTE OFF, H : MUTE ON
6RZM I 0bit MUTE detection (Rch) L : MUTE OFF, H : MUTE ON
7BREQ I (Decoder) BREQ signal input
8DSPINT I (DSP) interruption signal input H : Interruption
9SREQ O (Decoder) SREQ signal output
Ref. No. Application / Function Operation / Condition / Compatibility
Q4,906 SW14V When Q4’base goes Hi, SW14V outputs 14V.
Q5,6 AUDIO8V AVR When Q6’base goes Hi, A8V AVR outputs 8.3V.
Q7,8 MOTOR+B AVR When Q8’base goes Hi, M+B AVR outputs 8.3V.
Q9,10 SERVO+B AVR When Q10’base goes Hi, S+B AVR outputs 7.7V.
Q12 SW for IC12 When Q12’base goes Lo, IC12 is turned on.
Q13 PAN5V When Q13’base goes Lo, PAN5V outputs 5V.
Q14 4V PRE+B Short Protection If Q15’Emitter short to GND, between Q14’Base to Emitter
more than 0.6V, Q14 ON and Q15 is turned off.
Q15,16 4V PRE+B When Q15’base goes Hi, 4V PRE+B outputs 12V.
Q17,18 ILL+B SW When Q17’base goes Hi, ILL+B SW outputs 10.65V.
Q101,102 P-ANT SW When Q102’base goes Hi, P-ANT SW outputs 14V.
Q103,106 P-CON SW When Q106’base goes Hi, P-CON SW outputs 14V.
Protects Q104 from being triggered erroneously.This is
Q104,105 P-CON Protection achieved by turning on output protection when P-CON output
grounding is detected.
Q107 Ext Amp Control Buffer
Q108 Small lamp det SW When Q108’base goes Hi, Q108 is turned on.
Q109,110 Surge det When Q109’base goes Hi, Q109, Q110 are turned on.
Q111 BU det When Q111’base goes Hi, Q111 is turned on.
Q112 ACC det When Q112’base goes Hi, Q112 is turned on.
Q113 Mute driver When Q113’base goes Lo, mute driver is turned on.
Q114 Mute driver When Q114’base goes Lo, mute driver is turned on.
Q115,116 Mute driver When a base goes Lo, mute driver is turned on.
Q300,301 AM+B SW When Q301’base goes Hi, AM+B is out.
Q304 DSI (Disabled System Indicator) DSI blinks when Q304’base goes “H/L”
Q400~405 Pre-out mute SW When a base goes Hi, Pre-out is muted.
Q905 SVR+B AVR When Q905’base goes Hi, SVR+B AVR outputs 14V.