DVD 25 (serv.man7) - Harman Kardon Audio Service Manual (repair manual)

DVD25  Digital Versatile Disc Player

SERVICE MANUAL

Power for the Digital Revolution™

®

 TECHNICAL SPECIFICATIONS

Disc formats: 5 inch (12 cm) or 3 inch (8 cm) DVD-Movie, Standard conforming DVD-R and DVD-RW,
VCD, CD-i, CD, CD-R, MP3 or CD-RW discs,
Regio code: DVD Movie disc with Code 2 or 0 only.
DVD-Layers: Single Side/Single Layer, Single Side/Dual Layer, Dual Side/Dual Layer,
Audio formats: Linear PCM, MPEG, Dolby Digital or DTS Audio Discs

PAL /NTSC

1 V p-p/75 Ohms, sync negative polarity

Y/Luminance: 1 V p-p/75 Ohms, sync negative polarity
C/Chrominance: 0.286 V p-p

Y: 1Vp-p/75 Ohms, sync negative polarity

Cr: 0.7Vp-p/75 Ohms

Cb: 0.7Vp-p/75 Ohms

2 Vrms max

DVD (Linear PCM):

2 Hz - 22 kHz +0/-0.5 dB (48 kHz sampling)
2 Hz - 44 kHz +0/-0.5 dB (96 kHz sampling)

CD:

2 Hz - 20 kHz +0/-0.5 dB

113 dB (A-weighted)

DVD: 100 dB (18 Bit) / 105 dB (20 Bit)
CD/DVD: 96 dB (16 Bit)

DVD/CD: 0.0025 %

Below Measurable Limits

110 - 240 V/ 50 - 60 Hz

12 Watts (On)/20 Watts (Max)

440 x 87 x 305 mm

7 Kg

Depth measurement includes knobs and connectors.

Height measurement includes feet and chassis.

All specifications subject to change without notice.

Harman Kardon and Power for the digital revolution are trademarks of Harman Kardon, Inc.
Manufactured under license from Dolby Laboratories. Dolby, AC-3, ProLogic and the double-D symbol are trademarks of Dolby Laboratories. Confidential.
Unpublished Work. © 1992-1997 Dolby Laboratories, Inc. All rights reserved.
DTS is a trade mark of Digital Theater Systems, Inc.

This product incorporates copyright protection technology that is protected by method claims of certain U.S. patents and other intellectual property rights
owned by Macrovision Corporation and other rights owners. Use of this copyright protection technology must be authorized by Macrovision Corporation and
is intended for home and other limited viewing uses only unless otherwise authorized by Macrovision Corporation. Reverse engineering or diassembly is 
prohibited.

FEATURES

• Advanced sophisticated 10-bit MPEG-2 video

decoding circuits.

• Direct RGB output via SCART (selectable) for

optimum video performance. SCART connector
also configurable for Composite Video output.

• Test screen videos available for testing video

performance and setup.

• Pure PAL with NTSC disc due to true

NTSC/PAL conversion.

• Dual-layer compatibility for extended play

DVD.

• Progressive Scan component video ouputs

(NTSC only)

• By connecting a DTS (Digital Theater Systems)

or a Dolby Digital decoder, you can enjoy high
quality 5.1 digital surround sound from DTS or
Dolby Digital discs.

• With linear PCM audio at 16-24 bits and 44-

96 kHz (also on digital output, see table page
14), audio quality exceeding that of CD
becomes possible.

• Optical and coaxial digital audio output.

• On-Screen Menu lcons for disc information or

player information and access to many major
functions of this unit.

• Subtitles may be displayed in one of numerous

languages*.

• The multi-angle function allows you to choose

the viewing angle of scenes which were shot
from a number of different angles (Limited to
DVD’s recorded with multiple camera angles.)

• Multiple options for dialog language and

soundtrack selection (limited to DVD’s record-
ed with multiple dialog languages or sound-
tracks).

• Programming of up to 9 scenes in memory

(markers).

• Parental lock settings to prevent play of discs

unsuitable for some audiences [DVD only].

• Intuitive menu operating system.

• 2x/4x Zoom during play and pause.

• Backlit, ergonomically designed remote

control.

• Future software upgrades accessible via

Internet.

• The DVD 25 will play any conventional Audio

CD or recordable (CD-R) or erasable CD 
(CD-RW), bearing the logos shown here, MP3
or any VCD or DVD with the region code 0 or 2.

The unit can play discs bearing any of the
following logos:

3"(8 cm) disc

3"(8 cm) disc

5"(12 cm) disc

5"(12 cm) disc

5"(12 cm) disc 3"(8 cm) disc 5"(12 cm) disc

5"(12 cm) disc 5"(12 cm) disc

NOTE: Due to differences in the format of 
certain discs, it is possible that some discs may
include a mix of features that are not compatible
with the DVD 25. Similarly, although the DVD 25
is capable of a wide range of features, not all
discs include every capability of the DVD system.
For example, although the DVD 25 is compatible
with multi-angle discs, that feature is only possi-
ble when the disc is specially encoded for multi-
ple-angle play. In addition, the DVD 25 is capa-
ble of playing back both Dolby Digital and DTS
soundtracks, but the number and types of tracks
available will vary from disc to disc. To make cer-
tain that a specific feature or soundtrack option
is available, please check the options noted on
the disc jacket.
■ Playback capability for CD-R and CD-RW

discs may vary due to variations in the quality
of the disc and the recorder used to create
the disc.

The ”firmware” controlling the functionality of
the Harman Kardon DVD 25 is fully upgradeable.
In the event of future improvements to its
operations and features, it will be possible to
download firmware upgrades from
www.harmankardon.com. All you have to do is
create a CD-R with the data and insert it in the
DVD 25 for an automatic upgrade.

1 Harman Kardon DVD 25 DVD Player

1 Remote control

2 AA batteries

1 A/V cable for stereo analog audio and

composite video

1 S-Video cable

1 remote extension cable

1 owner's manual

 DIGITAL AUDIO CONNECTIONS

■ Remove the dust protection cap from the

optical digital audio output and connect the
cable firmly so that the configurations of both
the cable and the connector match.

■ Keep the dust protection cap and always 

reattach the cap when not using the connec-
tor.

* Digital Format must be selected as “ORIGI-

NAL“ or ”PCM” in Audio Set-Up Menu 
(see page 18).

■ Dolby Digital (AC-3) is a digital sound com-

pression technique developed by the Dolby
Laboratories Licensing Corporation,
supporting 5.1-channel surround sound, as
well as stereo (2-channel) sound, this tech-
nique enables a large quantity of sound data
to be efficiently recorded on a disc.

■ Linear PCM is a signal recording format used

in CDs. While CDs are recorded in 
44.1 kHz/16 bit, DVDs are recorded in 
48 kHz/16 bit up to 96 kHz /24 bit.

■ If you have a Dolby Pro Logic Surround

decoder connected to the DVD 25’s analog
AUDIO OUT connectors, thanks to the
”Downmix” function of the DVD 25 you will
obtain the full benefit of Pro Logic from the
same DVD movies that provide full 5.1-chan-
nel Dolby Digital soundtracks, as well as from
titles encoded with Dolby Surround.

■ The DVD 25 is designed to digitally output

96kHz-PCM audio with a 96 kHz sampling
rate. The 96 kHz indicator will light in the dis-
play. However, some 96 kHz DVD's may
include copy protection codes that do not
permit digital output. For full 96 kHz fidelity
from these discs, use the analog outputs of
the DVD 25.

IMPORTANT: If your surround processor/D/A
converter does not support 96 kHz PCM audio,
you must use the DVD 25 analog outputs for full
96 kHz fidelity with these discs.

■ When connecting an amplifier (with an opti-

cal/coaxial digital input ) which does not con-
tain a Dolby Digital (AC-3) or DTS decoder, be
sure to select ”PCM” as initial setting in the
”Digital Format” menu (see also page 18).
Otherwise, any attempt to play DVD may
cause such a high level of noise that it may
be harmful to your ears and damage your
speakers.

■ CD´s can be played as they would normally be

played.

Note:
■ Some first generation DTS decoders which do

not support DVD-DTS interface may not work
properly with the DVD/CD player.

Both Dolby Digital and DTS are audio formats
used to record 5.1-channel audio signals onto
the digital track of film. Both of these formats
provide six separate channels: left, right, center,
left rear, right rear, and common subwoofer.

Remember, that Dolby Digital or DTS will only
play 5.1-channel sound if you’ve connected the
optical or coaxial output of the DVD 25 to a DTS
or Dolby Digital receiver or decoder (see page
11) and if the disc was recorded in the Dolby
Digital or DTS format.

Dolby Digital is a trademark of Dolby Laboratories
Licensing Corporation.
Manufactured under license from Dolby
Laboratories. ”Dolby” and the double-D symbol
are trademarks of Dolby Laboratories.
Confidential Unpublished Works.1992-1997
Dolby Laboratories, Inc. All rights reserved.
DTS is a registered trademark of Digital Theater
Systems.

Disc:

DVD

CD

Sound recording
format:

Dolby Digital 
(AC-3)

Linear PCM
(48/96 kHz
16/20/24bit)

DTS 

Linear PCM

Optical/Coaxial digital
audio output 

Dolby Digital bitstream
(2-5.1 ch) or PCM 
(2 ch, 48 KHz/16bit)*

Linear PCM (2 ch) 
(48/96 kHz
16/20/24bit)

Bitstream or no 
output *

Linear PCM (44.1 kHz
sampling)