Bedienungsanleitung Yamaha dvd s830 (Seite 22 von 23) (Englisch)

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RQT6796

Troubleshooting guide

Sound

Page

Unit displays

Television displays

Bitstream

This is the digital form of multi-channel audio data (e.g., 5.1 channel)

before it is decoded into its various channels.

Decoder

A decoder restores the coded audio signals on DVDs to normal. This is

called decoding.

Dolby Digital

This is a method of coding digital signals developed by Dolby

Laboratories. Apart from stereo (2-channel) audio, these signals can also

be multi-channel audio. A large amount of audio information can be

recorded on one disc using this method.

Dolby Pro Logic

A surround system where a 4-channel audio track is recorded as

2 channels and then is restored to 4 channels for play. The surround

channel is monaural and can reproduce up to 7 kHz.

DTS (Digital Theater Systems)

This surround system is used in many movie theaters around the world.

There is good separation between the channels, so realistic sound effects

are possible.

Dynamic range

Dynamic range is the difference between the lowest level of sound that

can be heard above the noise of the equipment and the highest level of

sound before distortion occurs.

Frame still and field still

Frames are the still pictures that go together to make a moving picture.

There are about 30 frames shown each second.

One frame is made up of two fields. A regular television shows these fields

one after the other to create frames.

A still is shown when you pause a moving picture. A frame still is made up

of two alternating fields, so the picture may appear blurred, but overall

quality is high. A field still is not blurred, but it has only half the information

of a frame still so picture quality is lower.

I/P/B

MPEG 2, the video compression standard adopted for use with DVD-

Video, codes frames using these 3 picture types.

Intra coded picture

This picture has the best quality and is the best to use when adjusting

the picture.

Predictive coded picture

This picture is calculated based on past I or P-pictures.

Bidirectionally-predictive coded picture

This picture is calculated by comparing past and future I and

P-pictures so it has the lowest volume of information.

Linear PCM (pulse code modulation)

These are uncompressed digital signals, similar to those found on CDs.

Playback control (PBC)

If a Video CD has playback control, you can select scenes and information

with menus (called menu play in these instructions).

No sound.

Distorted sound.

≥Check the connections.

≥Check the volume on the equipment you have connected.

≥Ensure that the input settings on the other equipment are correct.

≥Turn Advanced Surround off if it causes distortion.

≥Output from this unit will be in stereo (two channels) when Advanced Surround is on. Turn Advanced

Surround off if you are using three or more speakers.

≥If you have connected this unit to an amplifier through the 6CH DISCRETE terminals, go to the Audio

menu in the SETUP menu, and change “Speaker Setting” to suit to your speakers. Select the large

or small icon for all the speakers you have connected.

≥Due to the specifications on some types of televisions, both video and audio may be cut off when you

turn the VIDEO OFF feature on.

≥If the “D.MIX” indicator on the display goes out while playing a multi-channel DVD-Audio disc, sound

will only be output from speakers specified by the disc. Read the disc's instructions for details.

–

Piercing noise comes from the

speakers.

≥If you have connected this unit to other equipment through the DIGITAL OUT terminal, ensure you

have selected the correct settings for “Dolby Digital”, “DTS Digital Surround” and “MPEG” in the

SETUP menus’ Audio menu.

“NoPLAY” ≥You inserted a disc the unit cannot play: Insert one it can.

“CHECK”

≥Disc is dirty: Wipe it clean.

“H∑∑”

∑∑ stands for a number.

≥Trouble may have occurred. The number following “H” depends on the status of the unit.

Reset procedure:

Press [POWER Í/I] to switch the unit to the standby mode and then back to ON. Alternatively, press

[POWER Í/I] to switch the unit to the standby mode, disconnect the power cable, and then

reconnect it.

≥If the service numbers fail to clear, note the service number and contact a qualified service person.

–

“NoDISC”

≥You haven’t inserted a disc: Insert one.

≥You haven’t inserted the disc correctly: Insert it correctly.

–

No on-screen display. ≥Go to Display in the SETUP menus, and select “On” for “On-Screen Messages”.

On-screen displays (including

GUI screens) not displayed or

only partially displayed on the

television.

≥Press [ON SCREEN], and press [2, 1] to highlight the Bar Position icon, then press [3, 4] to

adjust the position.

The disc’s menu is displayed in a

different language.

≥Go to Disc in the SETUP menus, and select the preferred language for “Menus”.

Glossary

DVD-S830.book 22 ページ２００２年１０月４日金曜日午前１１時１１分

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