Kenwood KDCW-5041-UA, KDCW-5141-UAY, KDCW-5041-UG, KDCW-5541-U, KDCW-5641-UY Service manual

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CD RECEIVER

KDC-MP408U/MP438U/X492 KDC-MP5039U/MP5539U KDC-W5041UA/W5041UG KDC-W5141UAY/W5141UGY KDC-W5541U/W5641UY

SERVICE MANUAL

KDC-MP408U : Panel assy (A64-4400-02)

KDC-MP408U

KDC-MP5039U : Panel assy (A64-4402-02)

KDC-MP5039U

KDC-W5041Ux : Panel assy (A64-4404-02)

KDC-W5041U

KDC-W5541U : Panel assy (A64-4403-02)

KDC-W5541U

KDC-X492 : Panel assy (A64-4398-02)

KDC-X492

* Escutcheon (B07-xxxx-xx)

* Carrying case (W01-xxxx-xx)

KDC-MP438U : Panel assy (A64-4399-02)

KDC-MP438U

KDC-MP5539U : Panel assy (A64-4401-02)

KDC-MP5539U

KDC-W5141Uxx : Panel assy (A64-4406-02)

KDC-W5141U

KDC-W5641UY : Panel assy (A64-4405-02)

KDC-W5641U

TDF SPARE-PANEL

MAIN UNIT NAME TDF PARTS No. TDF NAME KDC-MP408U Y33-2920-62 TDF-MP84DT KDC-MP438U Y33-2920-61 TDF-MP84D KDC-MP5039U Y33-2920-64 TDF-MP5039U KDC-MP5539U Y33-2920-63 TDF-MP5539U KDC-W5041UA Y33-2920-66 TDF-W5041UA KDC-W5041UG Y33-2920-67 TDF-W5041UG KDC-W5141UAY Y33-2920-66 TDF-W5041UA KDC-W5141UGY Y33-2920-67 TDF-W5041UG KDC-W5541U Y33-2920-65 TDF-W5541U KDC-W5641UY Y33-2920-65 TDF-W5541U KDC-X492 Y33-2920-60 TDF-84DX

Mounting hardware assy (J21-9716-03)

* Screw (4x16) (N84-4016-48)

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

* DC cord (E30-6428-05)

* Screw set (N99-1757-15)

* DC cord (E30-6671-05)

Lever (D10-7012-04) x2

This product complies with the

* Remote controller assy (RC-547) (A70-2085-05)

Battery (Not supplied)

* Plastic cabinet assy (A02-2755-13)

This product uses Lead Free solder.

RoHS directive for the European market.

KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/

W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY

ELECTRIC UNIT (X34- )

DME1

IC700

SOC

A320

FRONT-END

E2PROM

FST

MPX for RDS

J440

LX BUS

SERVO

IC720

D1.8V

IC680,682

LEVEL SHIFT

AM+B A8V

SW5V

BACK

SWITCH UNIT

(X16- )

D3.3V

IC2

REMOTE

J660

RESET SW

ROTARY ENCODER

IC300

RDS DECODER

NOT USED

IC602

INSTALLER MEMORY ROM CORRECTION

IC601

RESET IC BU5V

PAN SW5

AUX CN

IC600

KEY KEY ILLUMI

IC480

FM/AM

AUX (FRONT)

ILLUMI+B

ED1

A8V

E-VOL

SYSTEM u-COM

FL+B

MATRIX

USB I/F for SOC (IC700)

R74,75

1/2W Rx2

4VPRE+B

PRE MUTE

USB5V

USB CN

MUTE

BU5V

IC603

SERVO

MUTE DRIVER

USB5V

Q367,368,401,402,411,412

RST

Q100,103

4VPRE

Q320,321

AM+B

HI-SIDE SW

PRE MUTE

Q104

Q105

Q22,23

P.ON5V

IC60IC230

USB 5V FDC

SW 14V

IC500

POWER IC

OFFSET

Q120

BU DET

Q123

SURGE DET

C160,R160,R161,D160

TEL MUTE

Q122

ACC DET

Q170

DIMMER

Q150,151

ANT-CON

Q140,143

P-CON

Q20,21

BU 5V

Q10-12

A8V

Q33

SW 14V

Q32

SW 14V

Q30,31

SERVO

Q50,51

SW 20V

Q101

4VPRE +B

Q40-43

ILL+B

J400

WH190

PRE OUT (FRONT)

PRE OUT (REAR)

PRE OUT (SW)

SP OUT(FL)

SP OUT(FR) SP OUT(RL) SP OUT(RR)

WIRED REMOTE

BACK UP

LINE

ACC

DIMMER

ANT CON

P. CON

BLOCK DIAGRAM

KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/

BLOCK DIAGRAM

W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY

DPU1

ACB

FO COIL

TR COIL

DM1

LOADING & SPINDLE MOTOR

DM2

LOADING & SLED MOTOR

CD PLAYER UNIT (X32-6130-00)

IC4

SIGNAL A,B,C,E,F

APC

IC3

FO OUT

TR OUT

MOTOR DRIVER

DM OUT

FM OUT

VREF

FO OUT

TR OUT

DM OUT

FM OUT

CLOCK

16.934MHz

RF AMP

SERVO PROCESSOR

MP3 DECODER

WMA DECODER

AAC DECODER

1M bit SRAM

MOTHER BOARD (X34- )

SRAMSTB

BUCK

CCE

PIO0

D GND

MRST MRST

BSIF ST REQ

BSIF GATE

BSIF DATA

BSIF BCK

BSIF LRCK

R-ch

L-ch L-ch

ZDET MUTE L/R

A3.3V

AGND

BU1.5V

SW1.5V

SW3.3V

IC6

IC11

BU1.5V REG

IC5

SW1.5V REG

SW3.3V REG

C88,R82

CR FILTER

C87,R83

CR FILTER

Q13

REVERSAL CIRCUIT

SRAMSTB

BUCK

CCE

PIO0

BSIF ST REQ

BSIF GATE

BSIF DATA

BSIF BCK

BSIF LRCK

R-ch

A8V

A.GND

BU5V P.ON

D.GND

LOS-SW

12EJE-SW

LOE-SW

8EJE-SW

DRV MUTE

LO/EJ

MOTOR

S7.5V

S.GND

COMPONENTS DESCRIPTION

ELECTRIC UNIT (X34-577x-xx)

●

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

IC10 A8V REF Power Supply Outputs 1.27V.

IC20 D3.3V REG Outputs 1.8V. Power supply for SOC.

IC60 SW REG Outputs 5.0V. Power supply for D5V, FL+B and USB5V.

IC100 OP-AMP Reference supply for 4V pre-out.

IC230 Hi-side SW Overcurrent protection of USB power supply. When pin4 goes Hi, USB5V is ON.

IC300 RDS Decoder Decodes RDS signal.

IC480 E-VOL Controls the source, volume and tone.

IC500 Power IC Ampliﬁ es the front L/R and the rear L/R to 50W maximum.

IC600 System μ-COM Controls FM/AM tuner, the changer, CD mechanism, USB, panel, volume and tone.

IC601 Reset IC Lo when detection voltage goes below 3.6V.

IC603 Muting Logic IC Controls logic for muting.

KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/ W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY

COMPONENTS DESCRIPTION

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

IC680,682 Level Shift Converts 3.3V to 5V.

IC700 SOC (System On Chip)

IC750 iPod Authentication Coprocessor For iPod authentication.

Q10~12 A8V AVR When Q12’s base goes Hi, A8V AVR outputs 8.0V.

Q20,21 BU5V AVR While BU is applied, BU5V AVR outputs +5V.

Q22,23 P.ON5V When Q23’s base goes Hi, SW5V outputs +5V.

Q30,31 Servo+B AVR When Q31’s base goes Hi, Servo+B AVR outputs 7.5V.

Q32,33,104,105 SW14V When Q33’s (or Q105’s) base goes Hi,SW14V outputs 14V.

Q40~43 ILL+B AVR When Q43’s base goes Hi, ILL+B outputs 10.5V.

Q50,51 Serge Protect for IC1 Output 20V when BU is over 20V.

Q100,103 4VPRE+B Protect When 4VPRE+B is overcurrent, Q100 and Q103 turn Q101 off.

Q101 4VPRE+B AVR When Q100’s base is 8V, 4VPRE+B outputs 7.4V.

Q120 BU DET When the base goes Hi, Q120 is turned on.

Q122 ACC DET When the base goes Hi, Q122 is turned on.

Q123 Serge DET When the base goes Hi, BU DET is turned off.

Q140,143 P-CON SW When Q143’s base goes Hi, AVR outputs 14V.

Q141,142 P-CON Protection

Q150,151 P-ANT SW When Q151’s base goes Hi, P-ANT SW outputs 14V.

Q170 Small Lamp DET SW When the base goes Hi, Q170 is turned on.

Q320,321 AM+B When Q321’s base goes Hi, AM+B is output.

Q367,368,401,

Q402,411,412

Q500

Pre-out Mute SW When a base goes Hi, pre-out is muted.

Electric Discharge Circuit for C508

(SVR)

Decodes MP3 or other ﬁ les of audio/decompression standards by software based

architecture.

When P.CON output voltage decrease is detected, output protection is made.

When P.CON SW is ON, malfunction of Q140 is protected.

When the base goes Lo, Q500 is turned on.

SWITCH UNIT (X16-622x-xx)

●

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

IC2 Remote Control Sensor

Q5,21 PAN5V SW When Q5’s base goes Hi, PAN5V outputs 5V.

Q20 VFD Restart In condition of the base is Hi, key-scan starts at the same time as POWER ON.

Q22~24 Grid Driver When each transistor’s base is Lo, grid is ON.

CD PLAYER UNIT (X32-6130-00)

●

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

IC3 4ch BTL Driver

IC4 Servo DSP with built-in Audio DAC With built-in MP3/WMA/AAC decoder and 1M-bit-SRAM.

IC5 D1.5V REG. Power supply for digital 1.5V.

IC6 D3.3V REG. Power supply for digital 3.3V.

IC11 BU1.5V REG. Power supply for back-up 1.5V.

Q1 APC (Auto Power Control) Drives LD (Laser Diode).

Q13 Inverter Inverts ZDET signal.

D2 Laser Diode Protection Prevents reverse bias which is applied to laser. Laser destruction prevention.

D3,4 Static Electricity Countermeasure Prevents malfunction by static electricity.

Driver for focusing & tracking coil, driver for sled & spindle motor, and operation for

disc loading & ejection.

KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/

W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY

MICROCOMPUTER’S TERMINAL DESCRIPTION

SYSTEM μ-COM: IC600 on X34- (ELECTRIC UNIT)

●

Pin No. Pin Name I/O Application

1 REMO I

2 LX REQ M O Communication request to slave unit

3-5 NC - Not used Output L ﬁ xed

6 BYTE -

7 CNVSS -

8 XCIN - Sub clock 32.768kHz

9 XCOUT - Sub clock 32.768kHz

10 RESET -

11 XOUT - Main clock 12.00MHz

12 VSS -

13 XIN - Main clock 12.00MHz

14 VCC1 -

15 NMI -

16 LX REQ S I Communication request from slave unit

17 RDS CLK I RDS decoder clock input

18 PANEL DET I Detection of panel connector detached/attached H: Panel detached, L: Panel attached

19 PON AM I/O AM power supply control AM reception: H, No AM reception: Hi-Z

20 TUN IFC OUT I Front-end IFC-OUT input H: Station found, L: No station

21 RDS AFS M I/O Noise detection time constant SW

22 RDS QUAL I/O RDS decoder QUAL input

23 RDS DATA I RDS decoder data input

24 USB SYNC O Clock output for SW-REG

25,26 NC - Not used Output L ﬁ xed

27 TUN SCL I/O Front-end I2C clock input/output MAX 400kHz

28 TUN SDA I/O Front-end I2C data input/output

29 VFD DATA I/O VFD data input/output

30 VFD INT I VFD INT input

31 VFD CLK O VFD clock output 125kHz

32 ROTARY CCW I VOL key detection

33 S SYS DATA O Bolero serial output

34 S SOC DATA I Bolero serial input

35 S SOC SCL I Bolero serial clock input

36-38 NC - Not used Output L ﬁ xed

39 ROMCOR DET I E2PROM and Bolero writing request H: Writing

39 EPM I EPM input when writing

40 NC - Not used

41 VFD RST O VFD reset H: Reset cancelled, L: Reset

External display remote control input

Panel remote control input

Truth Value

Table

Processing / Operation / Description

Detects Pulse

15-pulse/360°, 2-click/1-pulse

KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/ W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Application

42 ROTARY CW I VOL key detection

43 CD MUTE I CD mute request L: Mute request (Bolero), H: Normal condition

44 VFD CE O VFD control request H: VFD data transfer ready

45 NC - Not used Output L ﬁ xed

46 PON O Power supply control H: Power ON, L: Power OFF

47,48 NC - Not used Output L ﬁ xed

50,51 NC - Not used Output L ﬁ xed

52 CD LOEJ I/O CD motor control

53 CD MOTOR O CD motor control

54 CD LOS SW I CD loading detection

56 PON PANEL I/O Panel 5V power supply

57 NC - Not used Output L ﬁ xed

58 SOC S RST O SOC reset H: Normal condition, L: Reset (Bolero)

59 PON ILL O Key illumination power supply H: Power ON, L: Power OFF

60 VCC2 -

61 SOC S STOP O SOC stop H: Normal condition, L: SOC stopped (Bolero)

62 VSS -

63 TYPE 1 I Destination setting

64 TYPE 2 I Destination setting

65 NC - Not used Output L ﬁ xed

66 ANT CON O Power antenna control Tuner ON: H

67 PCON O External ampliﬁ er control

68,69 NC - Not used Output L ﬁ xed

70 ILLUMI DET I Dimmer illumination detection L: ON, H: OFF

71 NC - Not used Output L ﬁ xed

72 ACC DET I ACC power supply detection ACC found: L, No ACC: H

73 BU DET I Detection of momentary power down BU found: L, Momentary power down: H

74 S SYS REQ O Communication request of system μ-com → SOC

75 S SOC REQ I Communication request of SOC → system μ-com

76 PWIC SVR O Power IC discharge circuit control H: ON, L: OFF

77 PWIC MUTE O Power IC mute control

78 PWIC STBY O Power IC standby control

79 LINE MUTE I Line mute detection TEL mute: Below 1V, NAVI mute: Over 2.5V

80 PWIC DC DET I DC offset detection

81 IC2 SDA I/O I2C data input/output

82 IC2 SCL I/O I2C clock input/output

CD LOE LIM SW

CD DISC12 SW

I CD detection (Chucking SW) H: Loading completed, L: No disc

I 12cm CD detection

Truth Value

Table

Processing / Operation / Description

Detects Pulse

15-pulse/360°, 2-pulse/1-click

Refer to the truth value table

ON (For 11 minutes after ACC OFF): L

Momentary power down or Panel detached or

11 minutes after ACC OFF: Hi-Z

KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/

W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Application

83,84 NC - Not used Output L ﬁ xed

85 MUTE 0 O E-VOL front mute L: ON, H: OFF

86 MUTE 1 O E-VOL rear mute L: ON, H: OFF

87 MUTE 2 O E-VOL SW mute L: ON, H: OFF

88 MUTE PRE FR O PRE-OUT mute for FR

89 MUTE PRE SW O PRE-OUT mute for SW L: Mute ON, H: Mute OFF

90 RDS NOISE I FM noise detection

91 TUN SMETER I S-meter input

92 LX MUTE I Communication request from slave unit H: Mute ON, L: Mute OFF

93 LX CON O Start-up request to slave unit H: Slave unit ON, L: Slave unit OFF

94 AVSS -

95 LX RST O Forced reset to slave unit H: Reset, L: Normal condition

96 VREF -

97 AVCC -

98 LX DATA S I Data from slave unit

99 LX DATA M O Data to slave unit

100 LX CLK I/O LX-BUS clock

Truth Value

Table

Processing / Operation / Description

Mute is L during CD play: L

Momentary power down: L

Only condition when DUAL ZONE or NAVI INT:

H ﬁ xed

Truth value table

CD motor control

CD MOTOR (Pin53) CD LOEJ (Pin52)

Stop L L

Load H L

Eject H H

Brake H Hi-z

KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/ W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY

TEST MODE

Example

■

÷÷÷÷÷÷÷

Key Description of display Description

Disc EJECT times

display

■

A symbol “■” in the key column indicates that the key should be pressed and held for 1 second or longer.

How to enter the test mode

■

Procedure Note

Press and hold the [1] key and [3] key and reset. While “– – – –” is displayed, power can be turned ON for only 30 minutes.

EJECNT XXXXX

Disc EJECT times display. MAX 65535 (times)

While disc EJECT times is displayed, press and hold for 2

seconds or longer to clear disc EJECT times.

All lamps blink when it is detected that the sub-clock resonator is disconnected.

Do not display “CODE_OFF”, “CODE_ON” or “CODE_NG” when Power is ON.

When having started up in the test mode, change the LINE MUTE inhibition time from 10 seconds to 1 second.

When operating in the test mode, even if a DC offset error occurs, detection information is not written in the E2PROM.

When operating in the test mode, CD mechanism error log information clear mode, and DC offset error detection information clear mode, do

not perform DEMO mode operations.

Also, do not display DEMO ON/OFF option items in the MENU in STANDBY source in the above modes.

Forced load operation is prohibited in the test mode.

How to clear the test mode

■

Procedure Note

Reset, momentary power down, ACC OFF, Power OFF, Panel detached. Clearing the test mode

Test mode default condition

■

Description Default values

Source STANDBY

Display Display lights are all turned on.

Volume -10dB (“30” is displayed.)

Loudness OFF

CRSC OFF regardless of having/not having the switching function.

AUX ON

System Q NATURAL (FLAT)

Preout Rear

KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/

W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY

TEST MODE

Special displays when all lights are on in STANDBY source

■

Key Description of display Description

Common

All lights ON.

Destination terminal

condition indication

Development ID

condition indication

2 Serial No. display

Power ON time

display

■

Disc operation

time display

■

Disc EJECT times

display

■

Panel open/close

times display

■

ROM correction

version display

Audio data

initialization

Forced Power

OFF

information

display

■

CD information

display mode

ON/OFF

■

Information display

iPod authentica-

AUD

tion IC installation

status display

T Y P E 2:1 T Y P E 1:1

C0747WE2 – 3.00

SNO 00000000

PONT I M 0HX X

PONT IM XXXXX

CDT I M 0H XX

CDT IM XXXXX

EJECNT XXXXX

PNCNT XXXXX

S: R0001M:R0001

S:ERR M:ERR

S:R

AUDIO INIT

POF F – – –

POF F SEC

POF F PNL

÷÷÷÷÷÷÷

System μ-com Mecha μ-com

:R––––M:R––––

∗∗∗∗

iPod:OK

iPod:NG

M:R

∗∗∗∗

All lights ON.

“TYPE” indicates system μ-com (IC1) destination, and

shows real-time condition of the destination terminal.

Development ID – Version (system μ-com: IC1)

Serial No. is displayed (8 digits)

00~50 is displayed for “XX”. When less than 1 hour,

displayed by increments of 10 minutes.

00001~10922 is displayed for “XXXXX”. MAX 10922 (hours)

When Power ON time is displayed, press and hold for

2 seconds or longer to clear Power ON time.

00~50 is displayed for “XX”. When less than 1 hour,

displayed by increments of 10 minutes.

00001~10922 is displayed for “XXXXX”. MAX 10922 (hours)

While the disc operation time is displayed, press and hold

for 2 seconds or longer to clear the disc operation time.

(Cleared only for displayed media.)

Disc EJECT times display. MAX 65535 (times)

While disc EJECT times is displayed, press and hold for

2 seconds or longer to clear disc EJECT times.

PANEL open/close times display. MAX 65535 (times)

Press the key for more than 2 seconds while the PANEL

open/close count is displayed and PANEL open/close count

is cleared.

The number is the ROM correction version number.

When E2PROM is not installed.

When not written in yet.

When data not matched. (due to the difference in versions)

AUDIO setting value is re-set to the test mode default

value.

No forced power OFF

Forced power OFF because of missing Security Code.

Forced power OFF by communication error between

system μ-com and panel.

While the forced power OFF data is displayed, press and

hold for 2 seconds to clear the data.

For the display contents, refer to “CD information display

mode” in the next section.

While in CD information display mode, press and hold for

2 seconds or longer to clear all CD information.

iPod authentication IC installation status display

OK: The IC is installed, NG: The IC is not installed.

(When key is pressed while the display in the left is being

shown, returns to normal display.)

KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/ W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY

• CD information display mode

Key Description of display Description

MECH A ERR 1 :X X

CD mecha-

(forward

rotation)

(reverse

rotation)

nism error

log display

CD Load

error

information

display

CD Ejection

error

information

display

CD time

code error

count data

display

(Missing

counts)

CD time

code error

count data

display

(count not

updated)

MECH A ERR 2 :X X

MECH A ERR 3 :X X

LOAD ERR1 :XX

LOAD ERR2 :XX

EJECT ERR1 :XX

EJECT ERR2 :XX

EJECT ERR3 :XX

EJ ECT ERR4 :XX

CNT LO SE

CDDA :XX

CDROM :XX

CNT STAY

CDDA :XX

CDROM :XX

TEST MODE

Mechanism error log 1 (Latest)

XX: Error number. “– –” is displayed in case there is no

error.

Mechanism error log 2 (Latest)

XX: Error number. “– –” is displayed in case there is no

error.

Mechanism error log 3 (Latest)

XX: Error number. “– –” is displayed in case there is no

error.

Load error switch 1