Kenwood DPCMP 727 Service Manual

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PORTABLE CD PLAYER

DPC-MP727/M P922

SERVICE MANUAL

KENWOOD

© 2001-3/B51-5706-00 (K/K) 3360

Knob
(K29-7956-04)

Knob
(K29-7955-03)

Knob &
(K29-7954-14)-'§3

Variable resistoré

(R31 pose-05)

Standards

SPECIFICATIONS

Front glass
(B10-3675-03)

Knob
(K29-7957-04)

Cover *
(F07-)

DC jack
(E03-0342-05)

Miniature phone jack
(E11-0933-05)

Miniature phone jack *
(E11-0932-05)

Signal reading format ....................................................................................... Non-contact signal reading (semi-conductor laser)

Characteristics
Frequency characteristics

Headphone output (16 Q, 1kHz)
LINE OUT output level/impedance

Power supply
External DC supply.

Size AA alkaline batteries available on the open market (LRe/AA x 2 or 4).
Rechargeable batteries (NB-150 x 2) .............................
Maximum external dimensions (width x height x depth)

(5-1/16X 1-1/4" x 5-7/16")

20HZ to 20kHz, i3dB

DC 4.5 to 5.1V
...DC 3V
DC 2.4V
..129mm x 32mm x 138mm

Weight (net) .................................................................................................................................................................. 2609 (0.6lb)
Battery life expectancy (during continual repeated playback)

Battery When D.A.S.C. is off When D.A.S.C. is on During MP3NVMA file playback
Size AA alkaline batteries available Approximately Approximately Approximately
on the open market (LR6/AA X 2) 9 hours 10 hours 10 hours
Size AA alkaline batteries available Approximately Approximately Approximately
on the open market (LR6/AA x 4) 18 hours 22 hours 22 hours

Rechargeable battery (NB-150 x 2)

Approximately 7 hours

Approximately 8 hours

Approximately 8 hours

The standard accessories vary depending on the model of the unit.
The accessories which are not standard are optionally available. For details, please consult your dealer.

Note:

KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without

notice.

* Refer to parts list on page 15.

In compliance with Federal Regulations, following are
repro-duction of labels on, or inside the porduct relating to

laser product safety.

DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.

KENWOOD-Crop certifies this equipment conforms to DHHS .
Regulations No.21 CFR 1040. 10, Chapter 1, Subchapter J.

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DPC-MP727/M P922

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CONTENTS / ACCESSORIES / CAUTIONS

Contents

SPECIFICATIONS ......................................... .Cover

PC BOARD .....................

CONTENTS / ACCESSORIES / CAUTIONS. 2 SCHEMATIC DIAGRAM.
CIRCUIT DESCRIPTION ............................ ...3 EXPLODED VIEW .......... ..
TEST MODE ...6 PARTS LIST ........................................................... 15
ADJUSTMENT. 7
Accessories
Remote controller Stereo headphones Stereo headphones External battery case Car battery adapter AC adapter
(A70-1490-05) (W01-0993-05) (W01-1000-05) (W01-0998-05) (W01-0921-05) (W08-0658-05): E
(W08-0659-O5): T
(W08-0660-05): x
% (W08-0667-15): M
(W08-0682-05): K

Rechargeable batteries Battery carrying case Car cassette adapter (GAG-3A)

AC plug adapter

(-W09 1267 05) (W01 0984 05) (W01-0989-05) (E03-0115-05)
% < i 5 T?
Cautions
Media that can be played back with this Hint for when naming folders and files
equipment When media containing MP3 and WMA files are played back on

Usable media apart from audio CDs (CD-DA)
Usable media :CD-ROM, CD-R, CD-RW
Usable formats : l809660 level 1 and level 2
(excluding expanded formats)
Files that can be played back: MP3 and WMA files

Creating media for playing back on this

equipment

Compressing MP3 and WMA files

Please set up the transfer bit rate setting for the compression

software when compressing MP3 and WMA files as follows:

MP3 Files : 128kbps recommended (32kbps-320kbps)

WMA Files : 128kbps recommended (64kbps-160kbps)

I This unit is compatible with 32kHz, 44.1kHz (recommended)
and 48kHz sampling frequencies.

Categorizing folders

As MP3 and WMA files are compressed into high-quality sound

files at an extremely high rate of compression, it is possible to

record several times more tracks than audio CDs onto a single

medium. It is therefore convenient to split the tracks into differ-

ent folders by genre, artist or album for retrieval and repeat play-

back purposes.

. A maximum of 23 folders or a maximum of 200 files can be
stored on a single media.

0 There are cases where it is not possible to save folders in the
desired sequence depending on the software being used.

Naming files

Single-byte characters between A and Z, single-byte numerals

between 0 and 9, and the single-byte underscore (7) can be

used When naming files. A maximum of twelve characters can
be displayed. Ensure that the ".MP3" (MP3 files) or ".WMA"

(WMA files) extension logs are attached to all file names.

I Never add the MP3 or WMA extension logs to any files other
than MP3 and WMA files. If the MP3 or WMA extension logs
are added to any files other than MP3 and WMA tiles, the
equipment will assume that they can be played back, and this
will produce loud noises in the headphones, resulting in dam-

age of adverse effects.

this equipment, the sequence in which each track is played back

will be the same as the sequence in which they were saved. It is

possible to set up the playback sequence by adding numbers

from between 01 and 99 to the front of the folder and the file

name when saving the file.

0 There are cases where it is not possible to save files in the
desired sequence depending on the software being used.

Additional information

Depending on the MP3 and WMA compression software in use,
it is possible to save track titles, artist names and other informa-
tion together with each sound file as additional information.
Although it is possible to display pre-recorded title and artist
information with this information, it is necessary to ensure that
this information has been entered in single-byte alphanumericals
(Up to a maximum of 30 alphanumericals for each.).
0 The method of entering title and artist information will differ in
accordance with the compression software. Refer to the com-
pression software's instruction manual or help file.

Confirming media and files

Check to ascertain that MP3 and WMA files can be played back

correctly on the personal computer in use prior to saving them

onto the media. Check to ensure that the saved file can be

played back normally.

0 It is not possible to confirm that files can be played back cor-
rectly while they are being saved onto the media.

When saving files onto media

Ensure that the session is closed or finalized when data has
been written on media. There are cases where media on which
the session has not be closed or finalized will not be played
back correctly with this equipment.

0 There are cases were the folder names and file names will not
be displayed correctly depending on the software used to
save them.

0 Do not store files or folders other than MP3 and WMA on
media to be played back with this equipment.

0 It is recommended that ten or less sessions are stored when
recording MP3 and WMA files onto a medium.

0 There are cases where playback is not possible when MP3
and WMA files (CD-ROM) and music CD information (CD-DA)
are saved on the same media.

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