Kenwood MD 203 Service Manual

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DMFi5020(K) COVER1,1P( 98t12.9l6z39 y [W Z \
K7

7

DMF-3020/3020(S)/5020 KENWOOD

MD-203
SERVICE MANUAL

©1998-9/BS1-5480-00 (K/K) 2945

L

KENWOOD badge Front glass Filter Escutcheon Knob Knob Panel
(843-0302-04) (810-3426-03) (B11-0376-04) (807-) (K29-7412-02) (K29-7354-14) (AGO-153041)

Knob Indicator Knob Knob Phone jack
(K27-2178-O4) (812-0353-04) (K29-7412-02) (K29-7536-04) (E11-)
Metallic cabinet Optic receiving module Oscillating module AC power cord
(A01 -3635-01) (W02-1181-05) (W02-1114-05) (E30-)
@x
O
O O
Phono jack Miniature phone jack Phono jack Power cord bushing
(E63-1065-05) (E11-0293-05) (E63-O160-05) (J42-0083-05)

Illustration is DMF-3020.
* Refer to parts list on page 23.

In compliance with Federal Regulations, following are KENWOOD-Corp. certifies this e uipment conforms to
reproductions of labels on, or Insude the product relating to DHHS Regulation No.21 CFR 10 010, Chapter 1,
laser product safety, Subchapter J.
Refer to 1050MD/DM-5090/DM-9090 service manual DANGER = Laser radiatlon when open and Interlock

, , defeated.
(B51-5387-00) If you see the mechanism test mode. AVOID DIRECT EXPOSURE TO BEAM.

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DMEESOZOUQ COVER1,1P( 98.12.916139 y [w 3

DMF-3020/3020ISI/5020/MD-203

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CONTENTS/ACCESSORIES/CAUTIONS

CONTENTS

CONTENTS/ACCESSORIES/CAUTIONS
CONTROLS .............................................
BLOCK DIAGRAM ..........
CIRCUIT DESCRIPTION
PC BOARD .................................................................

ooin'cnbio

SCHEMATIC DIAGRAM
EXPLODED VIEW ........
PARTS LIST ..........
SPECIFICATIONS

Refer to the Service manual, it you see the |C40, 41 on the X25 (PCB)

PCB Ref No. Parts No. Refer to Service manual Parts No. Page

X25 IC4O KANOG DV-203/2070, DVF-5010/9010/K7010 B51-5456-00 20

X25 |C41 PCM1716E DV-203/2070, DVF-5010/9010/K7010 B51-5456-00 21
Accessories

Check that the following accessories are present.

Audio cord (2) (E30 2733 05)

Remote control unit (1)
RC-MO705 (For DMF-5020)

(A70-1238-05) (A70-1239-05)

Battery cover (A09-1116-08)

System control cord (1)

Remote control unit (1)
RC-M0302 (For DMF-3020/M D-203)

Battery cover (A09-0374-08)

Optical fiber cable (1)
(B19-1529-05)

Batteries (2)
R03 ("AAA"-size) batteries (For RC-M0705)
R6 ("AN-size) batteries (For RC-MO302)

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.
ICheck that no disc is present in the unit.

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

3. Set the POWER key to OFF.

Operation to reset

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

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.

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

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, ieave the unit lor a few hours with the power ielt ON, and
restart the operation alter the condensation has dried up.

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.

Memory backup

The typical period for which the memory can be backed up while the
power cord is unplugged or the POWER key is set to the OFFposition
is about 3 weeks, though this may be variable depending on the
surrounding enVironment.

In case of long hours ol power failure or slipping out ofthe power cord,
the data related to recording and editing (that is usually recorded atthe
moment the Mini Disc is ejected) may be cleared ordestroyed before
it is written in the Mini Disc. Remember that the data lost cannot be
recovered.

After recording or editing, be sure to eject the Mini Disc so that the
recording or editing data can be written in the disc.