Service Manual for KENWOOD CD425M

70%

MULTIPLE COMPACT DISC PLAYER

CD-425M/4260M/4700M

SERVICE MANUAL

DPF-J6030

Front glass

(B10-3558-18)

Front glass

(B10-3559-08)

Dressing panel *

(A21-)

Knob

(K29-7717-18)

Dressing panel

(A21-3813-08)

Panel

(A29-1081-18)

Knob

(K29-7716-18)

Panel

(A60-1753-38)

Pin jack

(E63-1078-05)

Power cord bushing

(J42-0083-05)

AC power cord

(E30-2883-05)

Miniature phone jack

(E11-0293-05)

Front glass

(B10-3557-08)

Dressing panel

(A21-3815-08)

Rectangular receptacle

(E58-0024-05)

Metallic cabinet *

(A01-)

Miniature phone jack

(E11-0360-05)

* Illustration is CD-4260M/4700M.

* Refer to parts list on page 18.

Oscillating module

(W02-1114-15)

In compliance with Federal Regulations, following are

reproduction of labels on, or inside the porduct relating to

laser product safety.

KENWOOD-Crop. certifies this equipment conforms to

DHHS Regulations No.21 CFR 1040. 10, Chapter 1, Sub-

chapter J.

DANGER : Laser radiation when open and interlock

defeated.

AVOID DIRECT EXPOSURE TO BEAM.

Refer to CD-223M/DPF-J3010 service manual (B51-5409-

00) if require the following items in detail.

1) Mechanism operation description.

2) Disassembly for repair.

Audio

(E30-0505-05)

(E30-2816-05)

(E30-2861-05)

cord ....................... (2)

System control cord ........ (1)

Batteries (R6/AA) ............ (4)

Communication cord ....... (1)

REMOTE CONTROL UNIT RC-KB2

REMOTE

CONTROL

UNIT

RC-P0714

T

U

V

X

Y

Z

W

/

.

(

'

)

MODE

SET

SELECTOR

DISC

DELETE

/CLEAR

SPACE

CHARAC.

/CHECK

/P.MODE

RANDOM

SELECTON

DISPLAY

CONFIRM

A

B

C

D

E

F

G

REPEAT

BEST

POWER

3

2

4

H

J

K

L

M

N

O

P

Q

R

S

1

7

6

8

5

+10

0

+

100

9

7

ENTER

6

4¢

1¡

DISC

SKIP

DOWN

U

P

CURSOR

CHARACTER

DOWN

UP

LEFT

RIGHT

I

Remote control units ...... (2)

(A70-1326-05): RC-KB2

Battery cover (A09-1176-08)

(A70-1336-18): RC-P0714

Battery cover (A09-0374-08)

To reset the registered contents

The registered contents for title, music type, user file, best se-

lection and DTS disc can be reset by the following procedure.

Operation to reset

The microcomputer may malfunction (impossibility to operate,

erroneous display, etc.) when the connection cords are un-

plugged while power is ON or due to an external factor. In this

case, execute the following method to reset the microcomputer

and return it to normal condition.

Unplug the power cord from the power socket and plug the

power cord into the socket again.

Unplug the power cord from the power socket, and while

holding the

7 key depressed, plug the power cord into the

socket again.

CD-425M/4260M/4700M/DPF-J6030

2

CONTENTS / ACCESSORIES / CAUTIONS

EXTERNAL VIEW

CONTENTS / ACCESSORIES / CAUTIONS ............. 2

EXTERNAL VIEW .......................................................2

CIRCUIT DESCRIPTION ............................................3

ADJUSTMENT ............................................................8

PC BOARD ................................................................ 9

SCHEMATIC DIAGRAM .......................................... 11

EXPLODED VIEW ....................................................15

PARTS LIST..............................................................17

SPECIFICATIONS ......................................Back cover

Contents

Accessories

Cautions

TIMER PLAY

OFF

ON

MULTIPLE COMPACT DISC PLAYER

ON/STANDBY

DISPLAY

DISC SKIP

0

PUSH OPEN

RANDOM

CONFIRM

REPEAT

6

7

4

¢

200 DISC LOADING WITH TWIN PICK UP MECHANISM

STANDBY

Front glass

(B10-2395-08)

Front glass

(B10-2396-18)

Dressing panel

(A21-3786-08)

Knob

(K29-6885-38)

Dressing panel *

(A21-)

Panel

(A29-1087-08)

Knob

(K29-6824-18)

Panel

(A60-1755-18)

* Illustration is CD-425M/DPF-J6030.

* Refer to parts list on page 17.

CD-425M/4260M/4700M/DPF-J6030

3

CIRCUIT DESCRIPTION

IC2

IC6

CD MECHA

CXD2587Q

CLOCK

35 CLOK

S1_SW 56

S1_SW

(DSP)

XLAT

36 XLAT

S2_SW 28

S2_SW

DATA

44 DATA

S3_SW 27

S3_SW

SCLK

33 SCLK

D1_SW 58

DISC_SW1

SENS

34 SENS

D2_SW 57

DISC_SW2

SYSM

45 MUTG

SCOR

46 SCOR

R_CW 24

ROTARY+

SQCO

73 SQSI

R_CCW 25

ROTARY-

SQCK

75 SCK/SQCK

LOAD_SW 55

LOAD_SW

UNLOAD_SW 54

UNLOAD_SW

IC13

67 SCK_SW

LOAD_P 31

LOADM+

uPD780232GC

CLK

LOAD_M 30

LOADM-

(DOT DRIVER)

SO

72 SI

SI

74 SO

STB

71 STB

RESET 43

RESET INPUT

REG_ON 29

PERIPHERY IC ON

TIMER_SW

IC RESET 63

PERIPHERY IC RESET

uPD784217GF501

TIMER PLAY

ON/OFF

SERIAL COMMUNICATION

49 SBUSY

50 SDATA

REMOCOM INPUT

48 REM

POWER KEY

47 POWER

JOG

60 JOG_2

59 JOG_1

DISC SENSOR ON/OFF

23 PWM

LASER ON/OFF

32 LDC

SPINDLE MOTOR ON/OFF

26 MON

DOOR OPEN/CLOSE

70 DOOR_SW

PROTECTION

53 PROTECT

IC10

ANALOG MUTE

10 RMUTE

84~91

(AD0~AD7)

CY62128L-70SC

(SRAM)

76~83,92~98

(A0~A14)

RD 5

OE

WR 6

WE

CS 7

CS

1. Main Microprocessor : uPD784217GF501

Microprocessor periphery block diagram

PORT

A/D 0(IC13,22pin)

A/D 1(IC13,21pin)

VOLTAGE

RESISTER

2.9V

5.1K

RANDOM

REPEAT

2.0V

3K

DISPLAY

CONFIRM

1.2V

2K

STOP

DOWN

0.4V

SHORT

PLAY

UP

2. Key matrix

CD-425M/4260M/4700M/DPF-J6030

4

CIRCUIT DESCRIPTION

Pin No.

Pin Name

I/O

Description

1

A16(1M)

O

No used.

2

A17

O

No connection.

3

SCL

O

No connection.

4

SDA

I/O

No connection.

5

RD

O

SRAM read strobe.

6

WR

O

SRAM write strobe

7

CE

O

Chip selector

8

ASTB(CE)

O

No connection.

9

VDD

-

Power supply(+5V).

10

RMUTE

O

Analog muting signal output.

11

RWRR

O

No connection.

12

RWR

I

No connection.

13

RTRN

I

No connection.

14-21

L-D7-D0

O

No connection.

22

VPP

-

GND.

23

+5VPWM

O

Disc sensor ON/OFF. L:on

24

R-M-CW

O

Mechanism rotary motor(+). H:CCW

25

R-M-CCW

O

Mechanism rotary motor(-). H:CW

26

MON

O

Control port of poor focus works.

27

S3-SW

I

Mechanism address detector switch.

28

S2-SW

I

Mechanism address detector switch.

29

REG-ON

O

Power ON/OFF control.

30

LOADM- (IN2)

O

Loading motor(-) for main pickup.

31

LOADM+ (IN1)

O

Loading motor(+) for main pickup.

32

LDC

O

Laser on/off. L: Laser diode on.

33

SCLK

O

Sens serial data read clock.

34

SENS

I

SENS signal input.

35

CLK

O

Serial data clock.

36

XLAT

O

CXD2587Q latch. H î L:latch

37

VDD

-

Power supply(+5V).

38,39

X1,2

-

Main system clock(12.5MHz).

40

VSS

-

GND.

41

XT2

-

No connection.

42

XT1

I

GND.

43

RESET

I

System reset signal input.

44

DATA

O

Serial data output.

45

MUTEG(SYSTEM)

O

System muting control output.

46

SCOR

I

Sub code synchro detection.

47

POWER

I

Power key input terminal.

48

REM

I

Remote control signal input.

49

SBUSY

I/O

Serial busy signal I/O.

50

SDATA

I/O

Serial data signal I/O.

51

AVDD

-

Power supply(+5V).

52

AVREF

-

A/D reference power supply.

53

PROTECT

I

Detection signal input of protection.

54

UNLOAD-SW1

I

Unloading switch for main pickup.

55

LOAD-SW1

I

Loading switch for main pickup.

56

S1-SW

I

Mechanism address detector switch.

57

DISC-SW2

I

Disc2 sensor input..

58

DISC-SW

I

Disc sensor.

59

JOG2

I

Encoder signal input.

60

JOG1

I

Encoder signal input.

3. Microprocessor pin description (X32, IC6) :UPD784217GF501

Pin No.

Pin Name

I/O

Description

61

AVSS

-

GND.

62

LED

O

STANDBY LED control terminal.

63

ICRESET

O

IC reset.

64

AVREF1

-

D/A reference power supply.

65

RXD-232C

I

No connection.

66

TXD-232C

O

No connection.

67

SQCK/SCK-SW

O

SQCK,SCK(DOT/DSP clock) selector. L:DSP.

68

RXD-R

I

No connection.

69

TXD-R

O

No connection.

70

DOOR-SW

I

Door open/close detector switch.

71

STB1

O

Strobe signal output to dot driver.

72

S1

O

Data output to dot driver.

73

SQS1

I

Sub code read data input.

74

S0

I

Data input from dot driver.

75

SCK/SQCK

O

Dot driver/sub code read clock.

76-83

A0~A7

O

Address output to SRAM.

84-91

D0-7

I/O

SRAM data bus.

92-98

A8~A14

O

Address output to SRAM.

99

A15(1M)

O

No used.

100

VSS

-

GND.

Pin No.

Pin Name

I/O

Description

1

VDD

-

Power supply(+5V)

2

VSS

-

GND.

3,4

X1,2

-

Main system clock.(5MHz).

5

VPP

-

GND.

6

RESET

I

System reset input.

7

SCK

I

Serial clock.

8

SI

I

Data input.

9

SO

O

Data output.

10

POW-P

I/O

Timer sw on input.

.

11

LED-A

O

No used.

12

LED-B

O

No used.

13

STANDBY

O

No used.

14

NC

-

No used.

15

STB

I

Strobe signal input.

16

REM

I

No used.

17

NC

-

No used.

18

AVSS

-

GND.

19,20

A/D3,A/D2

-

GND.

21,22

A/D1,A/D0

I

Key return signal input(1,0).

23

VSS

-

GND.

24,25

AVDD/VDD

-

Power supply(+5V)

26

NC

-

No connection.

27-43

P1-P17

O

FL control output. 1G(

38),2G-16G(P1to P17).

44-58

P21-35

O

FL control output. 2G-16G(P21to P35).

59

VDD

-

Power supply(+5V)

60

VLOAD

-

Negative power supply(-37.5V)

61-63

P18-P20

O

FL control output. 2G-16G(P18 to P20).

64

NC

-

No connection.

65-72

1G-8G

O

FL control output.1G-8G.

73-80

9G-16G

O

FL control output.9G-16G.

4. FL Microprocessor : UPD 780232GC-012 (X32-IC13)

Pin description

5

CIRCUIT DESCRIPTION

CD-425M/4260M/4700M/DPF-J6030

KENWOOD CD425M Service Manual

Manual details

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