Kenwood MD 2070 Service Manual

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Dwrgozmk)LNI1,1E(98.11.265:232M y [w 2

STEREO MINIDISC RECORDER

KENWOOD

DMF-9020/9020(S)

MD-207O
SERVICE MANUA

KENWOOD badge Knob Color fil

Phono jack
(343-0302-04) (K27-2178-o4)

(EBB-106605)

L

ter

(B1 1 -0237-14)

©1998»11/851-5495-00 (K/K) 2945

Knob
(K29-6692-O4)

Knob

From glass
(K29-6700-03)

(810-2362-04)

D 4: WWW mm

A
M
3 M@ms@w© @ Q m
Phone (ack Knob Dressing panel ass'y Knob
(E63-0190-05) (K29-6697-04) (A21 -3756-03) (K29-6695-14)
Knob
(K294374104)
Metallic cabinet Phono (ack Optic receiving module Oscillating module AC Power cord

(A01 {3449-01) (E63-1086-05)

(W02-1181-05)

(W02-1114-05) (E30-)

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Phono jack
(E63-1059-05) (E63-0174-05)

In compliance with Federal Regulations, following are
reproductions of labels on, or Insude the product relating to
laser product safety,

Phono jack

Power cord bushing

Miniature phone (ack
(J42-0083-05)

(E11-0188-05)

Illustration is DMF-9020.
Refer to parts list on page 29.
KENWOOD-Corp. certifies this e uipment conforms to

DHHS Regulation No.21 CFR1O 010, Chapter 1,
Subchapter J.

DANGER : Laser radiation when open and interlock

defeated.
AVOID DIRECT EXPOSURE TO BEAM.

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DMFa9020(K) 1NI1,1P(98.11.265:24E=M y [w 3

DMF-9020/9020(S)/MD-2070

CONTENTS/ACCESSORIES/CAUTIONS

a?

CONTENTS

CONTENTS/ACCESSORIES/CAUTIONS ................... 2 SCHEMATIC DIAGRAM ........................................... 13
CONTROLS ......... .3 EXPLODED VIEW ..27
BLOCK DIAGRAM .5 PARTS LIST .......... ..29
CIRCUIT DESCRIPTION ............................................. e SPECIFICATIONS ....................................... Back cover
PC BOARD ................................................................. 9

Accessories

Audio cord (2)
(E30-0505-05)

Remote control unit (1)

RC-M0905
(A70-1255-05)

Battery cover (A09-1106-08)

System control cord (1)
(E30-2733-05)

Batteries (2)

Optical fiber cable (1 )
(319-1529-05)

it

Cautions

Note related to transportation and
movement

Before transporting or moving this unit, carry out the
following operations.

1. Set the POWER key to ON without loading a Mini Disc.
oCheck that no disc is present in the unit.

2. Wait a tew seconds and verify that the display shown
appears.

3. Set the POWER key to OFF.

Caution on condensation

CondensatIon (of dew) may occur inside the unit when there Is a great
difference in temperature between this unit and the outside.

This unit may not function properly if condensation occurs. In this
case, leave the unit for a few hours with the power left ON, and
restart the operation after the condensation has dried up.

\

Operation to reset

The microprocessor may fall into malfunctIon (impossibility to operate
erroneous display, etc.) when the powercord is unplugged while power
Is ON or due to an external factor. In this case, execute the following
procedure to reset the microprocessor and return it to normal cohdItion.

With the POWER key left to ON, unplug the power cord
from the power outlet then, while holding the eject (A)
key depressed, plug the power cord again.

oPlease note that resetting the microprocessor clears the contents
stored in, it returns the microprocessor to the condItion when it left
the factory.

Be specially cautious against condensation in a follow-
ing circumstance:

When this unit is carrIed from a place to another across a large
dIfference in temperature, when the humidity In the room where this
unIt Is Installed Increases, etc.