KENWOOD DMF5020 Service Manual

KENWOOD DMF5020 Service Manual
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Service Manual for KENWOOD DMF5020, downloadable as a PDF file.

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Sample pages

In compliance with Federal Regulations, following are

reproductions of labels on, or inside the product relating to

laser product safety,

KENWOOD-Corp. certifies this equipment conforms to

DHHS Regulation No.21 CFR 1040.10, Chapter 1,

Subchapter J.

DANGER : Laser radiation when open and interlock

defeated.

AVOID DIRECT EXPOSURE TO BEAM.

Illustration is DMF-3020.

* Refer to parts list on page 23.

STEREO MINIDISC RECORDER

DMF-3020/3020(S)/5020

MD-203

SERVICE MANUAL

REC

PLAY

OUT

(VARIABLE)

PLAY

OUT

OPT.

COAX.

REC

2 COAX.

1 OPT.

LINE

SYSTEM

CONTROL

DIGITAL

MIN

REC LEVEL

PHONES

ENTER

/TIME DISPLAY

REC MODE/CHARAC.

SET

REC INPUT

MONITOR

/DELETE

STANDBY

POWER

JOG DIAL

TITLE INPUT

EDIT/SPACE

MAX

DISC LO ADING ME CHANISM

STEREO MINIDISC RECORDER

- ON OFF

TIMER

REC OFF PLAY

OUTPUT

LEVEL

4¢

REC

Phone jack *

(E11-)

Knob

(K29-7536-04)

Panel

(A60-1530-11)

Indicator

(B12-0353-04)

Knob

(K27-2178-04)

Phono jack

(E63-1065-05)

Metallic cabinet

(A01-3635-01)

Miniature phono jack

(E11-0293-05)

Phono jack

(E63-0160-05)

Optic receiving module

(W02-1181-05)

Oscillating module

(W02-1114-05)

AC power cord *

(E30-)

Power cord bushing

(J42-0083-05)

Filter

(B11-0376-04)

Front glass

(B10-3426-03)

Escutcheon *

(B07-)

Knob

(K29-7412-02)

Knob

(K29-7412-02)

Knob

(K29-7354-14)

KENWOOD badge

(B43-0302-04)

Refer to 1050MD/DM-5090/DM-9090 service manual

(B51-5387-00) if you see the mechanism test mode.

DMF-5020(K)COVER1,1P( 98.12.916:39 y[W 2

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.

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 OFF position

is about 3 weeks, though this may be variable depending on the

surrounding environment.

In case of long hours of power failure or slipping out of the power cord,

the data related to recording and editing (that is usually recorded at the

moment the Mini Disc is ejected) may be cleared or destroyed 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.

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 reset the 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 (

key depressed, plug the power cord again.

÷ Please note that resetting the microprocessor clears the contents

stored in, it returns the microprocessor to the condition when it left

the factory.

Before transporting or moving this unit, carry out the

following operations.

1. Set the POWER key to ON without loading a Mini Disc.

÷ Check 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.

Note related to transportation and

movement

D I S C

DMF-3020/3020(S)/5020/MD-203

CONTENTS/ACCESSORIES/CAUTIONS

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

CONTROLS .................................................................3

BLOCK DIAGRAM .......................................................5

CIRCUIT DESCRIPTION .............................................6

PC BOARD ................................................................. 8

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

EXPLODED VIEW .....................................................21

PARTS LIST...............................................................23

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

CONTENTS

Remote control unit (1)

RC-M0705

(A70-1238-05)

(A70-1239-05)

Battery cover (A09-1116-08)

Battery cover (A09-0374-08)

(For DMF-5020)

Batteries (2)

R03 ("AAA"-size) batteries (For RC-M0705)

R6 ("AA"-size) batteries (For RC-M0302)

Check that the following accessories are present.

Audio

(E30-0505-05)

(E30-2733-05)

(B19-1529-05)

cord (2)

System control cord (1)

Optical fiber cable (1)

Remote control unit (1)

RC-M0302 (For DMF-3020/MD-203)

Accessories

Cautions

Refer to the Service manual, if you see the IC40, 41 on the X25 (PCB)

PCB

Ref No.

Parts No.

Refer to Service manual

Parts No.

Page

X25

IC40

KAN06

DV-203/2070, DVF-5010/9010/K7010

B51-5456-00

X25

IC41

PCM1716E

DV-203/2070, DVF-5010/9010/K7010

B51-5456-00

DMF-5020(K)COVER1,1P( 98.12.916:39 y[W 3

DMF-3020/3020

(S)/5020/MD-203

CONTROLS

1POWER key

: Press to turn the unit ON and OFF.

: The unit may enter the standby mode when the POWER key

is pressed to turn it ON. This is because the unit holds the

memory that it has been put to the standby mode by the

remote control unit in the last operation.

2Remote control sensor

3 Mini Disc insertion slot

: When a Mini Disc is inserted while the unit is in the standby

mode, it is turned ON automatically.

4 Eject (0) key

: Press to eject the Mini Disc.

5Stop (7) key

: Press to stop playback or recording.

6Play (3) key

: Press to start playback.

7 Manual search down (1) key

: This key functions as the fast reverse key during playback.

: During an editing mode, press to move the title input cursor

or to scroll the track title display to the left.

8 Manual search up (¡) key

: This key functions as the fast forward key during playback.

: During an editing mode, press to move the title input cursor

or to scroll the track title display to the right.

9Pause (8) key

: Press to let playback or recording pause temporarily.

0REC LEVEL knob

: Rotate to adjust the analog recording level.

!TIMER switch

: This switch is used in timer playback and timer recording.

@TITLE INPUT key

: Press to switch the title input mode ON/OFF.

# REC INPUT key

: Press to switch the recording input line between digital

(optical/coaxial), analog and monaural.

$ MONITOR/DELETE key

MONITOR

: Press to monitor the sound being input from the source

while the unit is in stop mode.

DELETE

: During title editing, press to delete a character. During track

editing, press to delete a track.

%REC MODE/CHARAC. (Character) key

REC MODE

: Press to switch the recording setting adjustment modes

(record modes) ON/OFF.

CHARAC.

: Press to select a character group during the title input

operation.

Description of main unit keys

^SET key

: For use in setting the editing result and input title in memory.

: When pressed in the recording pause mode, the MEMORY

REC function is set and recording starts from the sound

approximately 6 seconds before the current sound.

&JOG DIAL

Skip down (

4)/ Skip up(¢) knob

: During playback, rotate to skip tracks.

: Before starting recording in record mode, rotate to select the

recording setting adjustment mode.

: During title search, rotate to select a track number.

: During title input, rotate to select a track number or a

character.

: During editing, rotate to select the editing mode or a track

number.

*ENTER/TIME DISPLAY key

ENTER

: For use in executing the editing and title input operations.

TIME DISPLAY

: Press to switch the time and title display modes.

(EDIT/SPACE key

EDIT

: Press to switch the editing mode ON/OFF.

SPACE

: Press to insert a blank space character during the title input

operation.

)OUTPUT LEVEL DOWN (fi) key

: Use this to decrease the volume of the headphones and the

output level.

¡OUTPUT LEVEL UP (%) key

: Use this to increase the volume of the headphones and the

output level.

TM Record (¶) key

: Press to start recording.

In stop mode

: When the

¶ key is pressed while a recordable disc is present

in the unit, it enters record-pause mode.

(It enters record-pause mode at the position immediately

after the last existing track.)

In record-pause mode

: When the

¶ key is pressed, the SOUND SYNCHRO REC

standby mode is set.

: In the SOUND SYNCHRO REC standby mode, the set

functions in the same way as in the normal recording pause

mode.

£PHONES jack

: Connect stereo headphones (optional) here.

MIN

REC LEVEL

PHONES

ENTER

/TIME DISPLAY

REC MODE/CHARAC.

SET

REC INPUT

MONITOR

/DELETE

STANDBY

POWER

JOG DIAL

TITLE INPUT

EDIT/SPACE

MAX

DISC LO ADING ME CHANISM

STEREO MINIDISC RECORDER

- ON OFF

TIMER

REC OFF PLAY

4 5 6 7

@ # $

)

(

¡TM

REPEAT

FADE

OVER

OUT

OVER (

-dB)

(

-dB)

MONO

MANUAL

A . PAUSE

REMAIN

TOTAL

SINGLE

COPY

TITLE

· · · · · · · · · · · ·

PGM

MONITOR

ANALOG

32kHz

48kHz

44.1kHz

DIGITAL

OUTPUT

LEVEL

4¢

REC

While the standby indicator of the unit is lit, a small amount of current is flowing into the unit's internal circuitry to back up the memory.

This condition is referred to as the standby mode of the unit. While the unit is in the standby mode, it can be turned ON from the remote

control unit.

Standby mode

Display / Main unit

Display

TITLE and SEARCH indicators

MONO indicator

PGM (Program) indicator

Peak level indicators

Listening through headphones

Plug the stereo headphones (with standard-plug) available in audio

stores into the

PHONES jack and adjust the listening volume with the

OUTPUT LEVEL control on the front panel. The default value is 0 dB

(maximum volume).

ANALOG input indicator

DIGITAL input 1/2 indicators

REPEAT indicator

SINGLE, TOTAL and

REMAIN indicators

Character information

display

A. PAUSE indicator

MANUAL indicator

MONITOR indicator

Operation indicators

¶ REC indicator

8 Pause indicator

3 Play indicator

Sumpling frequency

indicators

OUTPUT

LEVEL

DMF-5020 only

DMF-5020(K)

COVER1,1P(

98.12.9

16:39

y[W

DMF-3020/3020

(S)/5020/MD-203

CONTROLS

1Numeric keys / Character editing keys

Numeric keys

0-9

: Press when selecting a track number

directly.

+10

: Press when selecting a track number

10 or more.

+100

: Press when selecting a track number

100 or more.

: These keys are also used to select a

character or symbol during title editing.

CHARACTER DELETE / CLEAR key

CHARACTER DELETE

: During title input, press to delete a

character.

CLEAR

: During editing, press to clear a selected

track number.

: In program mode, press to clear the

program.

CHARACTER SPACE / CHECK key

CHARACTER SPACE

: During title input, press to insert a blank

space character.

CHECK

: In program mode, press to check the

program contents.

CHARA. (Character)/ P.MODE (Play

Mode) key

CHARA.

: Press to select a character group dur-

ing the title input operation.

P.MODE

: Press to initiate the program mode.

5Editing mode keys

REC INPUT key

: Press to switch the recording input line

between digital (optical/coaxial), analog

and monaural.

EDIT key

: Press to switch the editing mode ON/

OFF.

SET key

: This key is used in the title assignment or

editing operations.

: When pressed in the recording pause

mode, the MEMORY REC function is set

and recording starts from the sound ap-

proximately 6 seconds before the cur-

rent sound.

ENTER key

: Press to execute editing or enter the

input title in memory.

7Applied operation keys

EDIT CANCEL key

: Press to cancel the editing operation.

TITLE INPUT key

: Press to switch the title input mode ON/

OFF.

TITLE SEARCH key

: Press to switch the title search mode

ON/OFF.

: During title editing, press to switch the

title change input mode between the

"overwrite mode" and "insert mode".

TIME DISPLAY key

: Press to switch the time and title display

modes.

AUTO PAUSE key

: When this key is pressed, the pause

mode is initiated automatically at the

point where the track number changes

during playback.

: When pressed in the recording or record-

ing standby mode, the AUTO REC PAUSE

mode is turned on.

AUTO/MANU. key

: Selects whether the track numbers are

to be marked automatically during re-

cording (AUTO) or to be marked manu-

ally after it (MANUAL).

MONITOR key

: Press to monitor the sound being input

from the source while the unit is in stop

mode.

METER MODE key

: Press to switch the level meter display

contents.

Remote control unit (DMF-3020/MD-203)

The remote control unit incorporates the basic operation keys as well as a variety of applied operation keys so that it can be

used in a wide range of purposes.

The keys on the remote control unit with the same names as on the main unit have the same function as the keys

on the main unit.

Model: RC-M0302

Infrared ray system

3REPEATkey

: Press to switch the repeat modes for

repeat playback.

RANDOM key

: Press to initiate the random play mode.

2ON/STANDBY key

: Press to turn the unit between ON and

STANDBY ( /

) modes.

6Basic operation keys

: Record key

: Pause key

: Stop key

: Play key

CURSOR /

1 , ¡ keys

1 , ¡

: During playback, press to fast forward

or fast reverse the play.

CURSOR

: During title input, press to move the

cursor.

CHARACTER/SEARCH/

4 , ¢ keys

CHARACTER

: Press to select a character group dur-

ing the title input operation.

: During title search, rotate to select a

track number.

4 , ¢

: During playback, press to skip tracks in

the forward or reverse direction.

ABC

DEF

JKL

MNO

GHI

TUV

WXY

PRS

POWER

EDIT

CANCEL

+100

+10

RANDOM

REPEAT

SPACE

CHARA.

CHECK

DELETE

CLEAR

P.MODE

EDIT

SET

REC INPUT

ENTER

AUTO

PAUSE

AUTO

/MANU.

METER

MODE

TIME

DISPLAY

OUTPUT

LEVEL

MONITOR

REMOTE CONTROL UNIT

RC-M0302

CURSOR

TITLE

CHARACTER

/SEARCH

CHARACTER

INPUT

4OUTPUT LEVEL (%fi) keys

: Use these to adjust the output level and

the volume of the headphones.

3Character editing keys

TIME DISPLAY key

: Press to switch the time and title display

modes.

CHARA. (Character)/ P.MODE (Play

Mode) key

CHARA.

: Press to select a character group dur-

ing the title input operation.

P.MODE

: Press to initiate the program mode.

DELETE / CLEAR key

DELETE

: During title input, press to delete a

character.

CLEAR

: During editing, press to clear a selected

track number.

: In program mode, press to clear the

program.

SPACE / CHECK key

SPACE

: During title input, press to insert a blank

space character.

CHECK

: In program mode, press to check the

program contents.

8EJECT (0) key

9Editing mode keys

EDIT CANCEL key

: Press to cancel the editing operation.

TITLE INPUT key

: Press to switch the title input mode ON/

OFF.

TITLE SEARCH key

: Press to switch the title search mode

ON/OFF.

: During title editing, press to switch the

title change input mode between the

"overwrite mode" and "insert mode".

SET key

: This key is used in the title assignment or

editing operations.

: When pressed in the recording pause

mode, the MEMORY REC function is set

and recording starts from the sound ap-

proximately 6 seconds before the cur-

rent sound.

ENTER key

: Press to execute editing or enter the

input title in memory.

EDIT key

: Press to switch the editing mode ON/

OFF.

Remote control unit (DMF-5020)

The remote control unit incorporates the basic operation keys as well as a variety of applied operation keys so that it can be

used in a wide range of purposes.

The keys on the remote control unit with the same names as on the main unit have the same function as the keys

on the main unit.

Model: RC-M0705

Infrared ray system

4MONITOR key

: Press to monitor the sound being input

from the source while the unit is in stop

mode.

METER key

: Press to switch the level meter display

contents.

RANDOM key

: Press to initiate the random play mode.

REPEAT key

: Press to switch the repeat modes for

repeat playback.

1ON/STANDBY key

: Press to turn the unit between ON and

STANDBY ( /

) modes.

6Recording-related keys

REC MODE key

: Press to switch the recording setting ad-

justment modes ON/OFF.

AUTO/MANU. key

: Selects whether the track numbers are

to be marked automatically during re-

cording (AUTO) or to be marked manu-

ally after it (MANUAL).

AUTO PAUSE key

: When this key is pressed, the pause

mode is initiated automatically at the

point where the track number changes

during playback.

: When pressed in the recording or record-

ing standby mode, the AUTO REC PAUSE

mode is turned on.

REC INPUT key

: Press to switch the recording input line

between digital (optical/coaxial), analog

and monaural.

EDIT CANCEL

MONITOR

REC MODE

SET

GHI

PRS

+100

METER

AUTO/MANU.

INPUT

ABC

ENTER

JKL

TUV

RANDOM

AUTO PAUSE

DEF

EDIT

MNO

WXY

+10

REPEAT

REC INPUT

CHARA.

DELETE

SPACE

TITLE

TMTM/CUR.L

CUR.R/

££

TIME

DISPLAY

OUTPUT

LEVEL

POWER

REMOTE CONTROL UNIT

RC-M0705

CLEAR

CHECK

P.MODE

5Basic operation keys

: Play key

4 , ¢ : Skip down/up keys

: Record key

: Stop key

: Pause key

7CURSOR / 1 , ¡ shuttle

CURSOR

: During title input, rotate to move the

cursor.

1 , ¡

: Use this during playback for forward and

reverse search.

2OUTPUT LEVEL (%fi) keys

: Use these to adjust the output level and

the volume of the headphones.

0Numeric keys

0-9

: Press when selecting a track number

directly.

+10

: Press when selecting a track number 10

or more.

+100

: Press when selecting a track number

100 or more.

: These keys are also used to select a

character or symbol during title editing.

DMF-5020(K)

COVER1,1P(

98.12.9

16:39

y[W

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