KENWOOD KDC-W6534U, KDC-W6534UY, KDC-X590, KDC-X7533U service manual

CD RECEIVER

This product uses Lead Free solder.

KDC-MP632U
KDC-W6534U/UY
KDC-X590
KDC-X7533U

SERVICE MANUAL

© 2006-3 PRINTED IN JAPAN
B53-0393-00 (N) 960

CD MECHANISM EXTENSION CORD (30P) : E39-0812-05

VOL

AUD

SET UP

VOL

AUD

SET UP

* Escutcheon
(B07-xxxx-xx)

Panel assy
KDC-MP632U (A64-3760-01)

s

USB

Q

MENU

S.MODE

RDM

A.RDM

SCAN REP

KDC-MP632U

M.RDMF.SEL

AUTO

SCRL

FM

AME

/

C.S.

DISP

SW

AM

FF

VOL

AUD

SET UP

USB

Q

MENU

Panel assy
KDC-X590 (A64-3759-01)

s

o

c

USB

Q

MENU

RDM
A.RDM

SCANS.MODE REP

KDC-X590

M.RDMF.SEL

* Carrying case
(W01-xxxx-xx)

AUTO

SCRL

FM

AME

/

C.S.

DISP

SW

AM

FF

VOL

AUD

SET UP

USB

Q

MENU

SPARE TDF PANEL

MAIN UNIT NAME TDF PARTS No. TDF NAME

Panel assy
KDC-MP6534U/UY (A64-3762-01)

s

S.MODE

RDM
A.RDM

SCAN REP

KDC-W6534U

M.RDMF.SEL

Panel assy
KDC-X7533U (A64-3761-01)

s

S.MODE

RDM

SCAN REP

A.RDM

KDC-X7533U

M.RDMF.SEL

TI

SCRL

FM

AME

/

PTY

DISP

SW

AM

FF

AUTO

SCRL

FM

AME

SW

AM

FF

KDC-MP632U Y33-2540-61 TDF-MP66D
KDC-W6534U Y33-2540-63 TDF-W6534U
KDC-W6534UY Y33-2540-63 TDF-W6534U
KDC-X590 Y33-2540-60 TDF-65DX
KDC-X7533U Y33-2540-62 TDF-X7533U

Mounting hardware assy
(J22-0011-03)

* Antenna adaptor
(T90-0523-05)

* Compact disc
(W01-xxxx-xx)

* DC cord
(E30-xxxx-xx)

* Screw set
(N99-1757-05)

Mounting hardware (L)
(J22-0258-04)

Screw set
(N99-1780-05)

* DC cord
(E30-6412-05)

Mounting hardware (R)
(J22-0259-04)

* Depends on the model. Refer to the parts list.

* Remote controller assy (RC-527)
(A70-2067-15)

Lever
(D10-4589-04) x2

Battery
(Not supplied)

* Plastic cabinet assy
(A02-2743-03)

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

BLOCK DIAGRAM

ELECTRIC UNIT (X34- )

CN5 IC9

OPEL DISPLAY
MARINE REMOTE
OEM REMOTE

A1

TUN8V

FRONT-END

SW5V
AM+B

J2

LX-BUS

713

3

IC1

12

IC7

BU5V

S3

FLIP
DET

to GND

S3

FLIP
DET

RESET

BU5V

J4

J1

S1

RESET

SW5V

IC2

REMOTE

SW5V

RDS/
RDBS

W1

FST

CN

ROTAR Y
ENCODER

Q4,5

SW5V

BU

SW5V

A8V

PRE+B

PREF

SYSTEM u-COM

PAN5V

SWITCH UNIT (X16- )

CN4

AUX IN

SERVO+B

IC2

E-VOL

MUTE DC-DET

MUTE

38

5

Q304Q13

PAN5V

EJECT & DSI
ILLUMI

BU5V

ILLUMI+B

A8V

1

DME1

CD MECHA

1

KEY
ILLUMI

BU5V

2

BU5V

D5V

FL+B

ED1

2

10

S4

EJECT
SW

COLOR
SELECT

CN2,3

USB

BU5V

1
1

2

9

BU5V

1W Rx1

VFD

P.ON USB/CURRENT DET

USB5V

BU

IC4

3

PW-IC

1

Q400-407

MUTE

IC6

MUTE
LOGIC

BU5V

DC-CN etc

PHONE
DIMMER/

ACC DET
BU DET/

ANT CON
P-CON/P.ON
P.ON CD/

P.ON ILLUMI
P.ON FL/

EX-AMP

R73

KEY
MATRIX

Q111

Q114

USB5V

AM+B

SW5V

P.ON FL

P.ON ILLUMI

J3

BU DET

RST

P.ON

J1

SP-OUT

FRONT L/R
REAR L/R
NF L/R

PRE-OUT

FRONT/REAR/(NF)

SW5V

BU5V

IC8

HI-SIDE
SW

P.ON USBCURRENT DET

D5V
A8V

SERVO+B

AM+B

Q302,303

TUN8V

FL+B

ILLUMI+B

PRE+B

ACC DET

ANT CON

Q3,11

SW5V

SW REG

P.ON CD

Q300,301

AM+B

TUNER
8V

IC13

FL+B

Q305,306

SW
ILLUMI
+B

PHONE

DIMMER

BU DET

EX-AMP

BU5V

P-CON

C104,D107,R112

PHONE

Q108

DIMMER

Q112

ACC-DET

Q109

SURGE­DET

BU5V

Q111

BU-DET

Q107

EXT-AMP­CON

Q101,102

ANT-CON

Q103,106

P-CON-SW

Q1,2

BU5V

Q12,21IC12

SURGE
SW20V

Q5,6,10

A8V

Q7,8

CD
SERVO

Q4,9

SW14V

IC5

ILLUMI
+B

Q15

4V
PRE+B

BU5V

BU5V

P.ON

P.ON

P.ON

P.ON

J1

DC-CN

PHONE
ILLUMI
ACC
B.U.
EXT-CONT

P-ANT
P-CON

2

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

BLOCK DIAGRAM

CD PLAYER UNIT (X32-5830-00)

IC2

IC4

MOTOR
DRIVER

SW3.3V

CS3.3V

CS1.8V

SW A5V

BU3.3V

LD

PD

E

A

TR COIL

FO COIL

DM1

SP MOTOR

DM2

LOADING &
SLED
MOTOR

CS POWER
POWER

D5V

A8V

BU5V

DPU1

B

C

F

IC5

SW3.3V

IC21

3V REG

IC20

1.8V REG

IC14

A5V REG

IC19

BU3.3V REG

SW3.3V

16.893MHz

SERVO DSP

S7.5V

X1

IC28

3-STATE
BUFFER

CS POWER
POWER ON

A0
SI
STB
SCK

RESET

SO
INTQ

DA EMPH

I2S

CS3.3V

CS1.8V
DATA
LRCK
BCLK

C16

CS3.3V

CKO

CS3.3V CS3.3V

&

IC16

SDRAM
64Mbit

IC15

CSRST

CD I/F

PLL

IC1

CSRST

IC17

X2

11.500MHz

S DATA

DATA MUTE

B DATA

SER2 (3/4WIRE)

AUDIO DSP

MEMORY
CONTROLLER

FLASH
MEMORY
8Mbit

u-COM

CLK

BU3.3V

SREQ

CS3.3V

BREQ

IC26

Q7

3.3 5V
(SW3.3V)

3.3Q65V
(BU5V)

R6,8

3.3

5V

RESISTOR

Q3

3.3 5V
(BU5V)

CS3.3V

X3

6.00MHz

IC18

INFINITY 0 DET.
EMPH

CS EMPH

DAC RST
DAC MUTE
PCM XCK
PCM DATA
PCM LRCK
PCM BCLK AUDIO Rch

CS, A20

NAND
GATE

USB CS

IC25

USB
DRIVER

UHC124

DAC

S4

SW A5V

CS3.3V

0-01

ONLY

S1

S2

S3

IC13

LPF

LOS-SW
12EJE-SW

8EJE-SW

LOE/LIM-

I2CDATA
I2CCLK

MRESET

MSTOP

AUDIO MUTE

SW A8V

AUDIO Lch

BU5V
A8V
D5V (D4V)
S7.5V

USB D+
USB D-

OC
PO

to X34-

IC20,21

CS3.3V
(CS1.8V)

IC15

IC18

DSP

DAC

P-ON

CSRST

INT

RESET

USB LINE
AUDIO LINE

IC19

BU3.3V

IC1

MECHA­u-COM

IC25

USB HOST
CONTROLLER

IC13

LFP

CN1

CONNECTOR

BU5V

MSTOP

D5V

POWER ON SW

OVER CURRENT

USB D+
USB D-

Lch
Rch

ELECTRIC UNIT (X34-)CD PLAYER UNIT (X32-)

CN1

CONNECTOR

IC1

SESTEM
u-COM

IC2

P-ON

E-VOL

Q1,2

BU5V

IC12

5V
SW-REG.

IC8

HIGH-SIDE
SWITCH

(V-BUS 5V)

CN2 or CN3

USB 5V

USB D+
USB D-

USB GND

BU14V

CABLE

USB

CONNECTOR

3

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

COMPONENTS DESCRIPTION

● ELECTRIC UNIT (X34-415x-xx)

Ref. No. Application / Function Operation / Condition / Compatibility

IC1 System µ-COM
IC2 E-VOL Controls the source, volume, tone.
IC3 A8V REF Power Supply Outputs 1.27V.
IC4 Power IC Amplifies the front L/R and the rear L/R to 50W maximum.
IC5 ILLUMI+B Power Supply Outputs 11.25V.
IC6 Muting Logic IC Controls logic for muting.
IC7 Reset IC “Lo” when detection voltage goes below 3.6V or less.

IC8 Hi-side SW

IC9 RDS IC Decodes RDS.
IC10 Installer Memory IC Installer memory.
IC11 Analog IC OP-AMP.
IC12 SW Regulator Supplies power for USB and CD mechanism.
IC13 FL+B Power Supply Outputs 3.0V.
Q1,2 B.U.5V AVR While BU is applied, BU5V AVR outputs +5V.
Q3,11 SW5V When Q11’s base goes “Hi”, SW5V outputs +5V.
Q4,9 SW14V When Q9’s base goes “Hi”, SW14V outputs 14V.
Q5,6,10 AUDIO8V AVR When Q10’s base goes “Hi”, A8V AVR outputs 8.0V.
Q7,8 SERVO+B AVR When Q8’s base goes “Hi”, S+B AVR outputs 7.5V.
Q12,21 Serge Protect for IC12 Outputs 20V when BU is over 20V.
Q13 PANEL5V When the base goes “Lo”, PANEL5V outputs 5V.
Q14,16 4V-PRE+B Protect When 4V-PRE+B is over current, Q14 and Q16 make Q15 turns off.
Q15 4V-PRE+B AVR When the base is 8V, 4V-PRE+B outputs 7.4V.
Q17 IC12 ON/OFF When the base goes “Lo”, IC12 is “ON”.
Q101,102 P-ANT SW When Q102’s base goes “Hi”, P-ANT SW outputs 14V.
Q103,106 P-CON SW When Q106’s base goes “Hi”, AVR outputs 14V.

Q104,105 P-CON Protection

Q107 EXT-AMP-CON When the base goes “Lo”, Q107 is turned on.
Q108 Small Lamp DET SW When the base goes “Hi”, Q108 is turned on.
Q109 Serge DET When the base goes “Hi”, IC4 is changed into standby source.
Q111 BU DET When the base goes “Hi”, Q111 is turned on.
Q112 ACC DET When the base goes “Hi”, Q112 is turned on.
Q113 Mute Driver When the base goes “Hi”, pre-out mute driver is turned on.
Q116 Pre-out Mute Driver When the base goes “Lo”, mute driver is turned on.
Q300,301 AM+B When Q301’s base goes “Hi”, AM+B is output.
Q302,303 Tuner8V When Q303’s base goes “Hi”, Tuner8V outputs 8V.
Q304 DSI When the base goes “Hi”, security indicator lights.
Q305,306 SW ILLUMI+B When Q306’s base goes “Hi”, SW ILLUMI+B outputs 11V.
Q400~407 Pre-out Mute SW When the base goes “Hi”, pre-out is muted.
Q408 Pre-out Mute ON/OFF When the base goes “Lo”, pre-out mute is "ON".

Controls FM/AM tuner, the changer, CD mechanism, panel, volume and tone.

Over current protection of USB power supply.
When pin 1 goes “Hi”, USB5V is ON.

Output protection is applied when P-CON output voltage fall is detected.
The 2 transistors protect Q103 false operation when P-CON SW is “ON”.

4

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

COMPONENTS DESCRIPTION

● SWITCH UNIT (X16-374x-xx)

Ref. No. Application / Function Operation / Condition / Compatibility

IC2 Remote Control IC
Q4,5 SW5V The power supply of IC2 is turned on when Q5’s base level goes “Hi”.
Q10 GREEN SW When the base goes “Hi”, LED lights.
Q12~14 Grid Driver Each grid is ON when each transistor’s base is “Lo”.
Q15 RED SW When the base goes “Hi”, LED lights.
Q18 SUB ILLUMI SW When the base goes “Hi”, LED lights.
Q19 DBO ILLUMI SW When the base goes “Hi”, LED lights.
Q20 Key Scan Start SW Key scan starts when the base goes “Hi”.

● CD PLAYER UNIT (X32-5830-00)

Ref. No. Application / Function Operation / Condition / Compatibility

IC1 Mechanism µ-COM
IC2 Signal Processor

IC4 BTL Driver

IC5 SW3.3V Regulator 3.3V power supply for IC2, pick-up, IC18 digital part
IC13 Audio Active Filter 2nd LPF
IC14 A5V Regulator 3.3V power supply for DAC
IC15 DSP for Compression Audio Decoder ACDrive decoder, MP3/WMA/AAC decoder
IC16 Compression Audio Codec SDRAM
IC17 Decoder Software & Unique ID Strage Flash ROM
IC18 Audio D-A Converter (24-bit external) External 24-bit for audio
IC19 BU3.3V Regulator 3.3V power supply for µ-com
IC20 1.8V Regulator 1.8V power supply for IC15 core part

IC21

IC25 USB Host Controller

IC26

IC28 Clock SW To SDRAM
Q3 Level Shift 3.3V→5V
Q6,7 Level Shift 3.3V←5V
Q8 APC (Auto Power Control)
Q9,10 Anticipation Sub-beam Delay During non-searching
Q17 USB Hi-side SW
D2 Static Electricity Countermeasure For IC2 built-in reset terminal
D3 Laser Diode Protection
D9 Static Electricity Countermeasure

Decoder/SDRAM/Flash ROM/USB Driver 3.3V Power supply for decoder, SDRAM, flash ROM and USB driver.
Regulator 3.3V power supply for IC15 port parts, IC16, IC17, IC25, IC26 and IC28.

Switching among IC15 & Flash ROM &
SDRAM & USB

Spindel motor, sled (including loading & eject) motor and pick-up
actuator

For DSP for Compression Audio Decoder, Flash ROM, SDRAM and USB

5

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

MICROCOMPUTER’S TERMINAL DESCRIPTION

● SYSTEM µ-COM: IC1 on X34- (ELECTRIC UNIT)

Pin No.

1 REMO I Remote control signal input Detects pulse width
2 LX MUTE I Mute request from slave unit H: Mute ON, L: Mute OFF
3AUD SDA O E-VOL data output
4AUD SEL O E-VOL control
5AUD SCL O E-VOL clock output
6 BYTE ­7 CNVSS ­8 XCIN I
9 XCOUT I
10 RESET ­11 XOUT ­12 VSS ­13 XIN - 12.0MHz
14 VCC1 ­15 NMI - Not used

16 CN DET I

17 RDS CLK I RDS decoder clock input
18 LX REQ S I Communication request from slave unit
19 PON AM I/O AM power supply control H: Receiving AM, Hi-z: No AM
20 LX REQ M O Communication request to slave unit
21 TUN IFC OUT I Front-end IFC-OUT input H: Station found, L: No station
22 NC - Not used L fixed
23 RDS AFS M I/O Noise detection time constant switching q Refer to the truth value table
24 RDS QUAL I RDS decoder QUAL input
25 RDS DATA I RDS decoder data input
26 PWIC BEEP O Beep output
27 TUN SCL I/O Front-end I2C clock input and output MAX400kHz
28 TUN SDA I/O Front-end I2C data input and output
29 VFD DATA I/O VFD data input and output
30 VFD INT I VFD INT input INT input
31 VFD CLK O VFD clock output Normal: 125kHz, Low consumption mode: 62.5kHz

32 VFD RST O VFD driver reset L: Momentary power down, panel detached or 11

33 ROMCOR SDA I/O

34 ROMCOR SCL I/O

35 PON PANEL I/O

36 DSI I/O

37,38 NC - Not used L fixed

Pin Name I/O Application

Panel communication detection
(Flip-down panel model only)

E2PROM I2C data input and output for
ROM correction
E2PROM I2C clock output for ROM correction

Panel 5V control
(Flip-down panel model only)

DSI/EJECT LED control OFF: Hi-z, Pulse drive: Panel detached
(Flip-down panel model only) H: Illumination ON or panel opened (POWER ON)

Truth

Value Table

Processing / Operation / Description

H: Panel detached, L: Panel attached

H: Canceling reset, L: Reset

minutes after ACC OFF

L: ON
Hi-Z: Momentary power down, panel detached or 11
minutes after ACC OFF

6

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No.

39 EPM I Flash EPM input
40 PANEL DET I
41 NC - Not used L fixed
42 ROMCOR DET I E2PROM writing request H: Writing
43 PON FL O FL+B control H: FL+B ON, L: FL+B OFF
44 VFD CS O VFD chip select control
45 ROTARY CW I VOL key input Detects pulse width
46 ROTARY CCW I VOL key input Detects pulse width
47 CD DISC12 SW I 12cm CD detection
48 CD LOS SW I CD loading detection
49 CD MUTE R I Rch CD mute request H: Normal, L: Requesting Rch mute
50 CD MUTE L I Lch CD mute request H: Normal, L: Requesting Rch mute
51 CD MRST O CD mecha µ-COM reset H: Normal, L: Reset
52 CD MSTOP O CD mechanism µ-COM stop H: Mecha µ-COM operates, L: Mecha µ-COM stops
53 CD DISC8 SW I 8cm CD detection (Not used)
54 CD LOE LIM SW I CD detection (Chucking SW) H: Loading completes, L: No disc
55 CD LOEJ I/O CD motor control w Refer to the truth value table
56 CD MOTOR O CD motor control w Refer to the truth value table
57 PON ILLUMI I/O Key illumination power supply control H: ON, Hi-Z: OFF

58 PON CD O Power supply control for CD-WMA

59 PON O Power supply H: POWER ON, L: POWER OFF
60 VCC2 ­61 EXT AMP CON I/O EXTERNAL AMP control
62 VSS ­63~65 TYPE 1~3 I Destination switching e Refer to the truth value table
66 TUN TYPE1 I Destination setting 1 r Refer to the truth value table
67 TUN TYPE2 I Destination setting 2 r Refer to the truth value table
68 OEM DISP DATA I/O
69 OEM DISP CLK I/O

70 OEM DISP CE I/O

71 EJECT I
72 P CON O External amplifier control H: POWER ON, L: POWER OFF or STANDBY
73 VFD KEY REQ I Communication request from VFD driver Connects to INT
74 ANT CON O Power antenna control Tuner ON: H
75 ILLUMI DET I Dimmer illumination detection L: ON, H: OFF
76 BU DET I Momentary power-down detection L: BU found, H: No BU or momentary power down
77 ACC DET I ACC power supply detection L: ACC found, H: No ACC

78 (PWIC SVR) O SVR discharging circuit

79 PWIC MUTE O Power IC mute L: STANDBY, momentary power down or TEL mute
80 PWIC STBY O Power IC standby control H: POWER ON, L: POWER OFF
81 LX CON O Start-up request to slave unit H: Slave unit starts up, L: Slave unit stops

Pin Name I/O Application

Panel detection (Flip-down panel model only)

External display data (Destination K and E only)
External display clock (Destination K and E only)
External display control request
(Destination K and E only)
Eject key input (Flip-down panel model only)

Truth

Value Table

Processing / Operation / Description

L: Panel detached, H: Panel attached

L: POWER ON, H: POWER OFF
L: Before M-STOP with reset

External display
External display

External display

L: Eject

H: POWER OFF or 5 seconds after momentary power
down, L: Other conditions

7

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No.

82 MUTE PRE R O Rch preout mute

83 MUTE PRE L O Lch preout mute

84 MUTE 0 I/O E-V OL front mute L: Mute ON, Hi-Z: Mute OFF
85 MUTE 1 I/O E-V OL rear mute L: Mute ON, Hi-Z: Mute OFF
86 MUTE 2 I/O E-VOL mute (Except front/rear)

87 LINE MUTE I Line mute detection

88 MUTE PRE SW I/O NF preout mute

89 PWIC DC DET I DC offset error detection
90 LX RST O Forced reset to slave unit H: Reset, L: Normal
91 MUTE C I/O E-VOL mute L: Mute ON, Hi-Z: Mute OFF
92 NC - Not used L fixed
93 RDS NOISE I FM noise detection
94 AVSS ­95 TUN SMETER I S-meter input
96 VREF - Connects to P.ON
97 AVCC - Connects to VCC
98 LX DATA S I Data from slave unit
99 LX DATA M I/O Data from and to slave unit
100 LX CLK I/O LX-BUS clock

Pin Name I/O Application

Truth

Value Table

Processing / Operation / Description

CD MUTE R is Lo: H (CD playing), Momentary power
down: H, L: DUAL ZONE or NAVI INT
CD MUTE L is Lo: H (CD playing), Momentary power
down: H, L: DUAL ZONE or NAVI INT

TEL mute: Below 1V
NAVI mute: Over 2.5V
L: Mute ON, Hi-Z: Mute OFF
OFF fixed: Selecting REAR in REAR/SUB selection

Truth value table

q AFS CONTROL

RDS AFS M Condition
AFS LOW L No sound output with AF search
AFS MID L Sound output with AF search
AFS HIGH Hi-Z Normal reception

w CD MOTOR CONTROL

CD MOTOR CD LOADING/EJECT
Stop L L
Load H L
Eject H H
Brake H Hi-z

8

e DESTINATION SW

TYPE 3 TYPE 2 TYPE 1

(Pin 65) (Pin 64) (Pin 63)

000 K KDC-X590
001 K KDC-MP632U
010 E KDC-W6534U/UY
011 E DPX501U/UY
100 M KDC-X7533U
101 M DPX-MP2090U
110 K DPX501
111 J DPX-U077

r TUNER TYPE

Kenwood brand model L L
OEM model 1 L H
OEM model 2 H L
OEM model 3 H H

DESTINATION MODEL

TUN TYPE1 TUN TYPE2

(Pin 66) (Pin 67)

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

MICROCOMPUTER’S TERMINAL DESCRIPTION

● MECHANISM µ-COM: IC1 (X32-: CD PLAYER UNIT)

Pin No. Pin Name I/O Application Processing / Operation / Description

1~5 NC - Not used Opened output L fixed
6 BYTE I External data bus SW input Connects to GND

7 CNVSS I Processor mode SW

8 MUTE O Audio mute control L: Mute ON, H: Mute OFF
9NC-Not used Opened output L fixed
10 RESET I Reset detection L: Reset (Flash ROM writing), H: Normal
11 XOUT O Main clock output Connects to resonator
12 VSS - Power supply input Connects to GND
13 XIN I Main clock input Connects to resonator
14 VCC1 - Power supply input Connects to BU3.3V
15 NMI I NMI interruption input Input Hi (Pull-up) fixed
16 MSTOP I STANDBY comeback interrupption L: Stop, H: Stop cancelled (Hi edge)
17 NC - Not used Opened output L fixed
18 DSP INT I DSP interruption signal input H: Interruption (Hi edge)
19~22 NC - Not used Opened output L fixed

23 E2P SCL I/O E2P I2C clock output

24 E2P SDA I/O E2P I2C data input and output

25,26 NC - Not used Opened output L fixed
27 SCL I System µ-com I2C clock input
28 SDA I/O System µ-com I2C data input and output
29 DSP TXD O Data output for DSP serial data Flash ROM writing: TXD (Pull-up)
30 DSP RXD I Data input for DSP serial data Flash ROM writing: RXD
31 DSP CLK O Clock output for DSP serial data Flash ROM writing: SCLK(Pull-up)
32
33 CS SDATA O Data output for decoder serial data
34 CS BDATA I Data input for decoder serial data
35 CS CLK O Clock output for decoder serial data
36~38 NC - Not used Opened output L fixed
39 EPM - Not used (Flash ROM: EPM) Opened output L fixed
40 PON D3.3 O D3.3V POWER ON control H: POWER ON, L: POWER OFF
41 PON A5 O A5.0V POWER ON control H: POWER ON, L: POWER OFF
42 PON CS1 O IC15 series 3.3V POWER ON control H: POWER ON, L: POWER OFF
43 PON CS2 O IC15 series 1.8V POWER ON control H: POWER ON, L: POWER OFF
44 CE - Not used (Flash ROM: CE) Opened output L fixed
45 DRV MUTE O Driver mute L: Stop, H: Mute OFF
46,47 NC - Not used Opened output L fixed

48 ZERO M I 0-bit mute detection

49 DE-EMPHASIS O DAC de-emphasis control H: De-emphasis ON, L: De-emphasis OFF
50,51 NC - Not used Opened output L fixed

52 LIM SW I

DSP STB(BUSY)

O DSP data strove signal output Flash ROM writing: BUSY

Laser pick-up inner circumference detection
SW signal input

L: Single chip mode
H: Microprocessor mode or flash ROM writing

Series resistors and E2PROM are not built when
ROM collection is not used.
Series resistors and E2PROM are not built when
ROM collection is not used.

H: Mute ON, L: Mute OFF
(No distinction of Lch/Rch)

H: Inner circumference

9

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Application Processing / Operation / Description

53 DISC NORMAL O Media discrimination result output (Not used) H: Normal disc, L: Other disc
54 DISC H RW O Media discrimination result output (Not used) H: High reflecting RW disc, L: Other disc
55 DISC RW O Media discrimination result output (Not used) H: Normal RW disc, L: Other disc
56~59 TEST OUT4~1 O Output for test Opened output L fixed
60 VCC2 - Power supply input Connects to BU3.3V
61 TEST OUT0 O Output for test Opened output L fixed
62 VSS - Power supply input Connects to GND
63~66 NC - Not used Opened output L fixed
67 TEST IN3 I TEST IN3 Pull-down connection (L: Normal/H: During test)
68 MODEL SEL I Model determination L: DXM-6810W (X32-583), H: DXM-6820W (X32-587)
69 E2P WRITE I TEST IN1: E2P writing permission Pull-down connection (L: Normal/H: During writing)
70 UNIQ ID I TEST IN0: Uniqe ID writing permission Pull-down connection (L: Normal/H: During writing)
71~73 NC - Not used Opened output L fixed
74 SEARCH O Searching situation output H: During seaching, L: Normal
75,76 NC - Not used Opened output L fixed
77 DSP RST O DSP reset control L: Reset, H: Normal

78 DSP A0 O

79 DA EMPHASIS I DSP DA emphasis input H: emphasis ON, L: emphasis OFF
80
81 DATA MUTE O Data output status L: During data output muting, H: During data output
82 CS RST O Decoder reset control L: Reset, H: Nornal
83 NC - Not used Opened output L fixed
84 SREQ O Decoder SREQ signal output
85 BREQ I Decoder BREQ signal input
86~93 NC - Not used Opened output L fixed
94 AVSS - Analog power supply input Connects to GND
95 NC - Not used Opened output L fixed
96 VREF - Reference voltage input Not used: Connects to GND
97 AVCC - Analog power supply input Connects to BU3.3V
98~100 NC - Not used Opened output L fixed

ROM EMPHASIS

DSP command/parameter discrimination H: During parameter transmitting
signal output L: During command transmitting

I Decoder ROM emphasis input H: emphasis ON, L: emphasis OFF

10

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

TEST MODE

● How to enter the test mode

Press and hold the [1] and [3] keys and reset.
(While “– – – –” is being displayed, power can be ON for 30
minutes.)

● How to clear the test mode

Reset, momentary power down, Acc OFF, P o wer OFF, detach
the panel.

● Initial conditions of the test mode

• Source is STANDBY.

• Displays lights are all turned on.

• The volume is at –10dB (The display is 30).

• Loudness (LOUD) is OFF.

• CRSC is OFF, regardless of whether there are switching
functions or not.

• SYSTEM Q is NATURAL (=FLAT).

• BEEP will sound anytime with a less than 1 second push.

• Auxiliary (AUX) is ON.

• SWPRE is SUB WOOFER.

● RDS automatic measurement

Conventionally, the PS display has been visually checked on
the production line. This will be replaced b y a new processing.
The PS data will be received and the PS contents is to be
verified as “RDS_TEST”. When this is verified, the P-CON
terminal is forced to go OFF. (In this case, “ _ ” means blank.)

→ This will be a dedicated test mode processing.

On the P-CON, when power is turned off once and, then,
turned on again, (Power OFF → ON) the unit will be re­started.

• Forced WIDE : FM1_98.1W

• Forced NARROW : FM1_98.1N

● CD receiver test mode specifications

• Display mode default setting shall be P-TIME.

•Jumps are made to the following tracks by pressing the
[ ] key.
No. 9 → No. 15 → No. 10 → No. 11 → No. 12 → No. 13 →
No. 22 → No. 14 → No. 9 (Returns to the beginning)
It must be noted, however, that when paying MP3 / WMA /
AAC disc, which contain 8 files or less, the first track and
the following trac ks are played in order.

• Pressing the [ ] key goes back by 1 track from the track
being played.

• When playing an MP3 / WMA / AAC disc, display the file
format before starting to play each file. (“MP3”, “WMA”,
“AAC”)

• When in CD source, by pressing [1] key for less than 1
second, a jump to the Track No. 28 is made.

• When in CD source, by pressing [2] key for less than 1
second, a jump to the Track No. 14 is made.

• While in CD source, press the [3] key to display the CD
mechanism model name and the version. Press the [3] k ey
again to go back to the normal screen. (Time code displa y)

6680:0123

Model name

• When CD is the source, press the [6] k ey to jump to No. 15.
At this time, the volume value is set to 25 (2V PRE) or 27
(4V PRE).

Version

● Special display when set to TUNER

When in TUNER mode, if an y of the f ollowing displa ys appear,
there is an abnormality with the front-end.

• “TNE2P_NG” : The E2PROM of front-end is still with the
default (unspecified) value.

• “TNCON_NG” : The communication with the front-end is
not possible.

● Forced switching of K3I

In TUNER FM mode, each time [6] key is pressed, the func­tions move in the following cycle :
AUTO → forced WIDE → forced MIDDLE → force NARROW
→ AUTO
The initial condition is AUTO and the displays below will ap­pear.

• AUTO : FM1_98.1A

• Forced MIDDLE : FM1_98.1M

● USB source test mode specification

• While in USB source, press the [6] ke y to set volume value
to 15.

● Audio adjust mode

Model with no DSP

• By pressing [AUD] key for less than 1 second, the audio
adjustment mode can be entered.

• Using the remote controller [∗] key and [AUD] key, the au­dio adjustment mode can be entered.

• Adjustment items of both the AUDIO FUNCTION MODE
and SETUP MODE are included.

• The initial item will be Fader, which is followed b y : Balance

→ Bass Lev el → Middle Level → T reble Lev el → HPF Front
→ HPF Rear → LPF Sub Woofer (After this, it will be arbi-

trary)

11

KDC-MP632U

CE

DATA

CLK

500msec

500msec

500msec

KDC-W6534U/UY/X590/X7533U

TEST MODE

• With the remote controller, continuous forwarding is pro­hibited.

• Using the VOL knob, [ ] and [ ] key, the Fader can be
adjusted in 3 steps : R15 ↔ 0 ↔ F15 (The initial value is 0)

• Using the VOL knob, [ ] and [ ] key, the Balance can
be adjusted in 3 steps : L15 ↔ 0 ↔ R15 (The initial value is

0)

• Using the VOL knob, [ ] and [ ] key, the Bass / Middle
/ Treble Level can be adjusted in 3 steps : –8 ↔ 0 ↔ +8
(The initial value is 0)

• Using the VOL knob, [ ] and [ ] key, the HPF Front /
Rear can be adjusted in 2 steps : Through ↔ 180Hz (or
220Hz) (The initial value is Through)

• Using the VOL knob , [ ] and [ ] key , the LPF Sub W oofer
can be adjusted in 2 steps : 60Hz (or 50Hz) ↔ Through
(The initial value is Through)

• Using the VOL knob, [ ] and [ ] key, the Sub Woofer
Phase can be adjusted in 2 steps : Reverse ↔ Normal
(The initial value is Normal)

• Using the VOL knob, [ ] and [ ] key , the Volume Offset
can be adjusted in 2 steps : –8 ↔ 0 (The initial v alue is 0)

• Using the VOL knob, [ ] and [ ] key , the Loudness ON/
OFF can be adjusted in 2 steps : OFF ↔ ON (The initial
value is OFF)

• Using the VOL knob, [
can be adjusted in 2 steps : OFF ↔ ON (The initial value is
OFF)

• Bass f / Bass Q / Bass EXT / Middle f / Middle Q / Treble f
do no appear in audio adjustments.

] and [ ] key, 2-Zone ON/OFF

● MENU

• Press the [Q] key to enter the MENU.

• Press the remote control [DNPP/SBF] key or the [DIRECT]
key to enter the MENU.

• Continuous forwarding by remote control is prohibited.

• Initial item in CD/USB source is “F/W Version”.

● 2-ZONE (Dual Zone) items (Model with 2-ZONE

only)

• When using sources other than the STANDBY source, press
[AUTO] or [TI] key for less than 1 second, 2-ZONE ON/
OFF is achieved.

● Backup current measurement

When reset in ACC OFF (Back Up ON) condition, MUTE ter­minal goes off after 2 seconds, instead of 15 seconds. (During
this time, the CD mechanism does not function.)

12

● OPEL communication items (Model with OPEL

communication)

During the test mode, OPEL communication line outputs the
following (At e very 500msec, the output condition of the com­munication line will be switched.)

● Special displays while all lights are on

When all lights are on with STANDBY source, if the follow­ing keys are pressed, the follo wing messages are display ed.

[1] key

[2] key

[3] key

[4] key

Version is displayed (forwarding)
(Display) TYPE : x_ _ _

→ 512K – 1.02 (“development ID” – “version”)
→ all lights on →

∗ TYPE indicates µ-com destination, and shows real-time

condition of the destination terminal.
Serial No. is displayed (8 digits)
(Display) xxxxxxxx
Key pressed: Power ON time is displayed.
While Power ON time is displayed, press and hold for 2
seconds or longer to clear the Power ON time.
(Display)

PON_0Hxx (00~50 is displayed for “xx”. When less

than 1 hour, display by increment of 10
minutes.)

xxxxx (00001~10922 is displayed for “xxxxx”)

Key pressed: CD operation time is displayed.
Press the key for more than 2 seconds while the CD
operation time is displayed to clear CD operation time.
(Display)

CDT_0Hxx (00~50 is displayed for “xx”. When less

than 1 hour, display by increment of 10
minutes.)

xxxxx (00001~10922 is displayed for “xxxxx”)

(“x” is displayed in hexadecimals)

MAX 10922 (hours)

MAX 10922 (hours)

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

TEST MODE

[5] key

[6] key

Key pressed: Number of CD EJECT time is displayed.
While the CD EJECT times is displayed, press and hold
for 2 seconds or longer to clear the number of CD EJECT
times.
(Display) EJCxxxxx MAX 65535 (times)
Key pressed: Number of times PANEL is opened/closed
is displayed.
Press the key for more than 2 seconds while the PANEL
open/close count is displayed to clear the PANEL open/
close count.
(Display) PC_xxxxx MAX 65535 (times)

[FM] ROM correction version is displayed

key (Display) ROM_R123

ROM_ERR_
ROM_R – – – (When not written in)
ROM_R ∗ ∗ ∗ (When data not matching)

[ ]AUDIO data initialization

key (Display) AUD_INIT

[ ]Key pressed: Forced Power OFF data displayed.

key While the forced power OFF data is displayed, press and

hold for 2 seconds or longer to clear the data.
(Display) POFF_ – – – (No Forced Power OFF)

SEC (Forced Power OFF because of

PNL (Forced Power OFF because of

system µ-com and panel communication error)

[ ]Key pressed: CD information display mode ON/OFF

key While in CD information display mode, press and hold for

2 seconds or longer to clear all CD information.
∗ Please refer to the next table.

(When E2PROM is not installed)

missing Security Code)

CD information display mode

I2C communication condition display
(Display) I2C_OK_ _

NG

[AM] CD mechanism error log display

key(switched by [

↑ (Display) MCERR1: x x ↔ MCERR2: x x ↔

CD loading error log display (switched by [ ] / [ ] keys)
(Display) LDERR1: x x ↔ LDERR2: x x ↔

CD ejection error log display (switched by [ ] / [ ] keys)
(Display) EJERR1: x x ↔ EJERR2: x x ↔

CD time code error count data display (missing counts)
(switched by [ ] / [ ] keys)
(Display) CNT_LOSE ↔ CDDA_ _: xx ↔ CDROM_: xx ↔

↓

CD time code error count data display (count not updated)

[FM] (switched by [ ] / [ ] keys)

key (Display) CNT_STAY ↔ CDDA_ _: xx ↔ CDROM_: xx ↔

] / [ ] keys)

MCERR3: x x ↔ MCERR1: x x ↔
(“– –” or the error code is displayed for “xx”)

LDERR1: x x ↔
(Number of times is displayed for “xx”)

MAX 99 (times)

EJERR3: x x ↔ EJERR4: x x ↔
EJERR1: x x ↔
(Number of times is displayed for “xx”)

MAX 99 (times)

CNT_LOSE ↔
(Number of times is displayed for “xx”)

MAX 99 (times)

CNT_STAY ↔
(Number of times is displayed for “xx”)

MAX 99 (times)

● Initializing AUDIO-related value setting

During STANDBY sourcing, by pressing [ ] key for less than
1 second, AUDIO setting values are retur ned to the default
values.

13

KDC-MP632U
KDC-W6534U/UY/X590/X7533U

TEST MODE

●Other

• At Power ON, “CODE_OFF”, “CODE_ON” displays will not
be made.

• During STANDBY sourcing, by pressing [AUTO] or [TI] key,
for less than 1 second GREEN/RED of the ke y illumination
is switched. (Model with illumination switched function only)
With KDC-X590 / KDC-X7533U models, which are installed
with Display Blackout function, switching will be made in
the following order :

KDC-X590

q OFF ON OFF ON
w OFF OFF ON OFF
e OFF ON OFF ON
r OFF OFF ON OFF

KDC-X7533U

q ON OFF OFF ON
w OFF OFF ON OFF
e OFF ON OFF ON
r OFF OFF ON OFF

Key illumi Triangle illumi

GREEN RED GREEN RED

Key illumi Triangle illumi

GREEN RED GREEN RED

● Clearing bac kup/installer memory , CD mechanism

information and service information (E2PROM
data clearing)

1. While pressing the [Q] key and [ATT] key , reset-start to start
backup/installer memory data, CD mechanism and service
information initialization.
(While “– – – –“ is being display ed, pow er can be ON f or 30
minutes.)
[CD mechanism information]

• Displays I2C communication condition

• Displays CD mechanism error log

• Displays CD loading error data.

• Displays CD ejection error data

• Displays CD time code error count data (missing count)

•

Displays CD time code error count data (count not updated)

[Service information]

• Displays power ON time is displayed

• Displays CD operation time

• Displays number of CD EJECT times

• Displays number of times panel was opened/closed

• Displays forced Power OFF data

2. When initialization is complete, the following display will be
made.
Normal completion

*With the hardware configuration, when either GREEN/RED

of the key illumination could lights up, the RED of the tri­angle illumination is to be lighted.
When desiring to light up GREEN of the triangle illumina­tion, turn off both GREEN and RED of the key illumination.

• During STANDBY sourcing, by pressing [AUTO] or [TI] key
for at least 1 second, Rear/Sub Woofer of PREOUT is
switched. (Model with 2-PREOUT)

• When staring up in the test mode, LINE MUTE prohibition
time is set to 1 second instead of 10 seconds.

• While in the test mode, even when a DC offset error is de­tected, the detection information will not be written to the
E2PROM.

• While in the test mode, even after an elapse of pre-set time ,
the backup memory items will not be written to the E2PROM.

• Information Clear mode for Test Mode, backup/installer
memory, and CD mechanism error log, in the DC offset er­ror detection information clear mode, DEMO mode opera­tion will not be conducted.
Also, in the abov e mode, the men u of the STANDBY source
will not display DEMO ON/OFF switching items.

C D _ : A U _ _

Abnormal ending 1 : backup/installer memory initialization : NG

C D _ : A U _ _

Abnormal ending 2 : CD mechanism error log initialization : NG

C D _ : A U _ _

Abnormal ending 3 : All initialization : NG

C D _ : A U _

14