Panasonic DVD-CV37 사용 설명서 - 페이지 20

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Troubleshooting guide

Picture

Picture distorted.

No picture.

The picture shown on the

television is not normal.

(The sides of the picture are cut

off or black bands appear at the

top and bottom of the screen.)

Picture quality is poor.

Unit displays

"NoPLAY"

"CHECK"

"H∑∑"

∑∑ stands for a number.

Television displays

No on-screen display.

On-Screen Menu Icons not

displayed or only partially

displayed on the television.

The disc's menu is displayed in

a different language.

Glossary

Bitstream

This is the digital form of multiple 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 5.1-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.

≥Some distortion is normal during SEARCH.

≥Ensure that the equipment is connected properly.

≥Make sure the television is on.

≥Ensure the television's video input setting (e.g., VIDEO 1) is correct.

≥Go to the Video menu in the SETUP screen, and change "TV Aspect" to suit your television. You

may also need to change the screen mode on the television itself.

≥Ensure that the unit is connected directly to the television, and is not connected through a video

cassette recorder.

≥The 4:3 TV ZOOM function is on.

≥Check the settings in the On-Screen Menu Icons' Video menu.

≥You inserted a disc the unit cannot play; insert one it can.

≥Disc is dirty. Wipe the disc clean.

≥Trouble is likely to have occurred. The number following "H" depends on the status of the unit.

Reset procedure:

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

press [POWER Í] to switch the unit to the standby mode, disconnect the AC power supply

cord, and then reconnect it.

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

≥Go to Display in the SETUP menus, and select "On" for "On-Screen Messages".

≥Press [3, 4] while the rightmost icon is highlighted to move them down.

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

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 (I-picture)

This is the standard picture and is a complete picture in itself. This

means it has the best picture quality and is the best to use when

adjusting the picture.

P: Predictive coded picture (P-picture)

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

B: Bidirectionally-predictive coded picture (B-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).

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