Read Harman Kardon DVD 31 (serv.man10) Service Manual online
Terminology
Since they share some of the characteristics and
technology of CD players, many of the terms and
operational concepts used in a DVD player are
similar to what you may be familiar with from CD
players and changers, or older video disc formats
such as Laser Disc. However, if this is your first
DVD product, some of the terms used to describe
the features of a DVD player may be unfamiliar.
The following explanations should solve some of
the mysteries of DVD, and help you to enjoy all
the power and flexibility of the DVD format and
the DVD.
technology of CD players, many of the terms and
operational concepts used in a DVD player are
similar to what you may be familiar with from CD
players and changers, or older video disc formats
such as Laser Disc. However, if this is your first
DVD product, some of the terms used to describe
the features of a DVD player may be unfamiliar.
The following explanations should solve some of
the mysteries of DVD, and help you to enjoy all
the power and flexibility of the DVD format and
the DVD.
With the arrival of DVD, disc data capacity has
increased dramatically. On a DVD Video disc most
of this capacity is taken up by MPEG 2 video and
the multichannel movie soundtrack in Dolby
Digital and/or DTS. This information is com-
pressed. But with DVD Audio, most of this
capacity is available for music only, without any
compression. This allows us to put the audio
information on the disc in the same quality as
the original mastering in the studio, in PCM up to
24 bit/192 kHz.
increased dramatically. On a DVD Video disc most
of this capacity is taken up by MPEG 2 video and
the multichannel movie soundtrack in Dolby
Digital and/or DTS. This information is com-
pressed. But with DVD Audio, most of this
capacity is available for music only, without any
compression. This allows us to put the audio
information on the disc in the same quality as
the original mastering in the studio, in PCM up to
24 bit/192 kHz.
DVD-Audio's 24-bit system provides substantially
improved resolution of fine detail, because it
describes a specific point in the musical informa-
tion using a 24-digit long string of one's and
zero's with 16,777,216 possible combinations,
while CD's primitive 16-bit system offers only
65,536 options. The 192 kHz frequency allows us
to have fast changes in music made audible,
which results in more dynamism, and also allows
us to obtain a higher bandwidth, up to 96 kHz.
Although that is far beyond the human audible
spectrum, it still improves the musical realism.
improved resolution of fine detail, because it
describes a specific point in the musical informa-
tion using a 24-digit long string of one's and
zero's with 16,777,216 possible combinations,
while CD's primitive 16-bit system offers only
65,536 options. The 192 kHz frequency allows us
to have fast changes in music made audible,
which results in more dynamism, and also allows
us to obtain a higher bandwidth, up to 96 kHz.
Although that is far beyond the human audible
spectrum, it still improves the musical realism.
Aspect Ratio: This is a description of the width
of a video image in relation to its height. A con-
ventional video screen is four units wide for every
three units of height, that’s why the ratio is
called ”4:3”. Newer wide aspect ratio video dis-
plays are 16 units wide for every nine units of
height, making them more like the screen in a
movie theater. The program material on a DVD
may be recorded in either format and, in addi-
tion, you may configure the DVD to play back in
either format, depending on the features record-
ed on a disc.
of a video image in relation to its height. A con-
ventional video screen is four units wide for every
three units of height, that’s why the ratio is
called ”4:3”. Newer wide aspect ratio video dis-
plays are 16 units wide for every nine units of
height, making them more like the screen in a
movie theater. The program material on a DVD
may be recorded in either format and, in addi-
tion, you may configure the DVD to play back in
either format, depending on the features record-
ed on a disc.
Title: For a DVD, a title is defined as an entire
movie or program. There can be as many chapters
within a title as the producers decide to include.
Most discs include only one title, but some may
have more than one, to give you a “Double
Feature” presentation.
movie or program. There can be as many chapters
within a title as the producers decide to include.
Most discs include only one title, but some may
have more than one, to give you a “Double
Feature” presentation.
Chapter: DVD programs are divided into chap-
ters and titles. Chapters are the sub-sections pro-
grammed into a single title on a disc. Chapters
may be compared to the individual tracks on an
audio CD.
ters and titles. Chapters are the sub-sections pro-
grammed into a single title on a disc. Chapters
may be compared to the individual tracks on an
audio CD.
RGB Video: This is a new form of video signal
that eliminates many of the artifacts of tradition-
al composite video signals by splitting the signal
into the three fundamental colors Red, Green
and Blue (RGB). With an RGB connection (via
SCART), you will see greater picture resolution
and eliminate many picture imperfections such as
the moiré patterns often seen on checkered pat-
terned cloths. However, in order to benefit from
RGB video, you must have a video display with
an RGB compatible SCART input.
that eliminates many of the artifacts of tradition-
al composite video signals by splitting the signal
into the three fundamental colors Red, Green
and Blue (RGB). With an RGB connection (via
SCART), you will see greater picture resolution
and eliminate many picture imperfections such as
the moiré patterns often seen on checkered pat-
terned cloths. However, in order to benefit from
RGB video, you must have a video display with
an RGB compatible SCART input.
Progressive scan: DVD offers progressive scan
video outputs for use with compatible high-reso-
lution televisions and projectors. Before DVD, no
consumer medium could store, transmit or display
video with full resolution. To conserve bandwidth,
analog compression (interlacing) is employed: first
the odd-numbered lines of a frame are displayed,
followed by the even-numbered lines. The result is
that only half of the video image is drawn at one
time; the viewer's brain must reassemble the
complete image. This is acceptable, if the monitor
is not too large and if there is not too much
motion in the image. Large displays and fast-mov-
ing images reveal the limitations of this system.
Thanks to DVD's immense data capacity, images
are now stored intact (progressively), so that all
the lines in each frame (odd and even) are shown
at the same time. But because most TV's cannot
handle a progressive signal, all current DVD play-
ers generate an interlaced output for compatibili-
ty. Now, the Harman Kardon DVD is among the
select few DVD players with true progressive scan
video output (NTSC and PAL) for use with com-
patible TV's and CRT projectors and with all plas-
ma, LCD and DLP display devices via the compo-
nent video output. The result is 40% greater light
output than a conventional TV and a stunningly
detailed high definition image, along with an
almost complete absence of visible scanlines and
motion artifacts. Of course, traditional Y/Pr/Pb
component video, SCART, S-Video and composite
video outputs are included for use with conven-
tional televisions and projectors.
video outputs for use with compatible high-reso-
lution televisions and projectors. Before DVD, no
consumer medium could store, transmit or display
video with full resolution. To conserve bandwidth,
analog compression (interlacing) is employed: first
the odd-numbered lines of a frame are displayed,
followed by the even-numbered lines. The result is
that only half of the video image is drawn at one
time; the viewer's brain must reassemble the
complete image. This is acceptable, if the monitor
is not too large and if there is not too much
motion in the image. Large displays and fast-mov-
ing images reveal the limitations of this system.
Thanks to DVD's immense data capacity, images
are now stored intact (progressively), so that all
the lines in each frame (odd and even) are shown
at the same time. But because most TV's cannot
handle a progressive signal, all current DVD play-
ers generate an interlaced output for compatibili-
ty. Now, the Harman Kardon DVD is among the
select few DVD players with true progressive scan
video output (NTSC and PAL) for use with com-
patible TV's and CRT projectors and with all plas-
ma, LCD and DLP display devices via the compo-
nent video output. The result is 40% greater light
output than a conventional TV and a stunningly
detailed high definition image, along with an
almost complete absence of visible scanlines and
motion artifacts. Of course, traditional Y/Pr/Pb
component video, SCART, S-Video and composite
video outputs are included for use with conven-
tional televisions and projectors.
Multiple Angle: DVDs have the capability to
show up to four different views of the same
scene in a program. When a disc is encoded with
multiple-angle information, pressing the Angle
button will enable you to switch between these
different views. Note that at present, few discs
take advantage of this capability and, when they
do, the multiple-angle technology may only be
present for short periods of time within the disc.
Producers will usually insert some sort of icon or
graphic in the picture to alert you to the
availability of multiple viewing angles.
show up to four different views of the same
scene in a program. When a disc is encoded with
multiple-angle information, pressing the Angle
button will enable you to switch between these
different views. Note that at present, few discs
take advantage of this capability and, when they
do, the multiple-angle technology may only be
present for short periods of time within the disc.
Producers will usually insert some sort of icon or
graphic in the picture to alert you to the
availability of multiple viewing angles.
Reading: This is a message that you will see
after you´ve loaded the disc and the tray has
closed. It refers to the fact that the player must
first examine the contents of the disc to see if it
is a CD or DVD, and then extract the information
about the type of material on the disc, such as
languages, aspect ratios, subtitles, number of
titles and more. The slight delay while the
contents of the disc are read is normal.
after you´ve loaded the disc and the tray has
closed. It refers to the fact that the player must
first examine the contents of the disc to see if it
is a CD or DVD, and then extract the information
about the type of material on the disc, such as
languages, aspect ratios, subtitles, number of
titles and more. The slight delay while the
contents of the disc are read is normal.
Resume: The operation of the Stop Button on
the DVD works differently from what you are
used to on CD players. On a traditional CD play-
er, when you press the Stop button, the unit does
just that: it stops playback. On a CD player, when
you press the start button again, the disc starts
from the beginning. With the DVD, however, you
have two options when playing DVD discs.
Pressing Stop once will stop playback, but it
actually puts the unit in the Resume mode. This
means that you can turn the machine off and,
when you press play the next time, the disc will
resume or continue from the point on the disc
where the Stop button was pressed. This is help-
ful if you are watching a movie and must inter-
rupt your viewing session but wish to pick up
where you left off. Pressing the Stop button twice
will stop the machine in a traditional manner
and, when the disc is played again, it will start
from the beginning.
the DVD works differently from what you are
used to on CD players. On a traditional CD play-
er, when you press the Stop button, the unit does
just that: it stops playback. On a CD player, when
you press the start button again, the disc starts
from the beginning. With the DVD, however, you
have two options when playing DVD discs.
Pressing Stop once will stop playback, but it
actually puts the unit in the Resume mode. This
means that you can turn the machine off and,
when you press play the next time, the disc will
resume or continue from the point on the disc
where the Stop button was pressed. This is help-
ful if you are watching a movie and must inter-
rupt your viewing session but wish to pick up
where you left off. Pressing the Stop button twice
will stop the machine in a traditional manner
and, when the disc is played again, it will start
from the beginning.
In resume mode, the cover of the DVD will be
displayed, if available. Otherwise, the
Harman Kardon screen will appear.
displayed, if available. Otherwise, the
Harman Kardon screen will appear.
Terminology
20826_DVD31 Eng 17/08/04 13:11 Side 4
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