Kenwood CD 423 M Service Manual

Page 2

CD-423M/423M-S/424M/DPF-J3030/J5030

CONTENTS / ACCESSORIES / CAUTIONS

Contents

CONTENTS /ACCESSOFIIES / CAUTIONS...
CIRCUIT DESCRIPTION ..............................

Ambubm

EXPLODED VIEW
PARTS LIST....

ADJUSTMENT.... PARTS DESCFI O S

PC BOARD ......... SPECIFICATIONS ..........

SCHEMATIC DIAGRAM .. . 1

Accessories

,
Audio cord ....................... (1) Syslem control com ________ (1) Batteries (RS/AA) ............ (4)
(an-osos-os)

Remote control units (2)

FIC-KBZ : CD-424M/DPF-J5030 only
(A70-1 326-05)

PIC-PO71 4
(A70-1336-05)

m

Battery cover (A09-1 1 76-08)

Cautions

(E30-2816-05)

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
use, execute the following method to reset the microcomputer
and return it to normal condition.

Unplug the power cord from the power socket end plug the
power cord into the socket again.

To reset the registered contents

The registered contents for title, music type, user file and best
selection can be reset by the following procedure.

Unplug the power cord from the power socket, and while
holding the I key depressed, plug the power cord into the
socket again.

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CD-423M/423M-S/424M/DPF-J3030/J5030

CIRCUIT DESCRIPTION

5. Test mode
INPUT KEY PROCEDURE DISPLAY '
Insert the AC plug to INITIAL CONDITION MECHA. INITIAL
the wall outlet with - Disc No.1 moves to the center. INITIAL OKI!
pressing the SKIP- - Clear the memory of the SRAM.
DOWN key, - Door opens. INITIAL NG
~ Set the switch of TIMER ON PLAY to ON. TIMER, NG
- Set the switch of SYSTEM CONTROL to X88. SER, NG
Insert the AC plug to CIRCUIT ADJUSTMENT TEST ON
the wall outlet with ' Open the door and load the disc to the Disc No.1.
pressing the REPEAT - Close the door. The unit changes to test mode 05 .
key alter clamping the disc
PLAY/PAUSE Change the mode 05(tracking-on) and 03(tracking-off) alternately . 05 XX:XX 03 XX:XX
by the PLAY key
STOP Stop the function. 00
UP The pickup travels outwards. MOTOR FORWARD
DOWN The pickup travels inwards. MOTOR REVERSE
RANDOM Shows the result of self~adjustment. l >
07 EFIFB 07 XXX:XXX
08 TGIFG 08 XXX:XXX
09 FE/RF ' 09 XXX:XXX
10 TENC 10 XXX:XXX
Mode changes alternately by the RANDOM key. NG: blinking
REPEAT Playback PGM signal of the Track No.7,13.23.30.34
and 41 in the order. And release the test mode.
CONFIRM Release the test mode.
(TIMER PLAY SW) Check the switch position. TIMER ON , TIMER OFF

Insert the AC plug
to the wall outlet with
pressing the UP key.

CHECK THE MECHANISM JAMMING.
Clamp the Disc N01 .2,100,50.200 and 199 in the order.

Insert the AC plug
to the wall outlet with
pressing the

THE MECHANISM TEST MODE.
Display shows Niagara until pressing any keys.

RANDOM key.
PLAY/PAUSE Change the mode 05(tracking-on) and 03(tracking-ofi) alternately 05 XX:XX 03X:XX
by the PLAY key.
STOP Stop the function.
Shows the result of self-adjustment.
07 EF/FB 07 XXX:XXX
08 TGIFG 08 XXX:XXX
09 FEIRF 09 XXX:XXX
10 TENC 10 XXX:XXX
Mode changes alternately by the STOP key. NG: blinking
UP Arm Motor Load operation. MOTOR LOAD
DOWN Arm Motor Unload operation. MOTOR UNLOAD
RANDOM Rotary Motor Clockwise tuming. MOTOR CW
DISPLAY Rotary Motor Counterclockwise turning. MOTOR CCW
REPEAT Playback PGM signal of the Track No.1,23 and 41
in the order.And release the test mode.
CONFIRM Release the test mode.

(TIMER PLAY SW)

Check the switch position.

TIMEFI ON , TIMER OFF