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RQT7696
Product service/Maintenance/Glossary
Product service
1. Damage requiring service—The unit should be serviced by
qualified service personnel if:
(a) The AC power supply cord or AC adaptor has been damaged;
or
(b) Objects or liquids have gotten into the unit; or
(c) The unit has been exposed to rain; or
(d) The unit does not operate normally or exhibits a marked
change in performance; or
(e) The unit has been dropped or the cabinet damaged.
2. Servicing—Do not attempt to service the unit beyond that
described in these operating instructions. Refer all other
servicing to authorized servicing personnel.
3. Replacement parts—When parts need replacing ensure the
servicer uses parts specified by the manufacturer or parts that
have the same characteristics as the original parts. Unauthorized
substitutes may result in fire, electric shock, or other hazards.
4. Safety check—After repairs or service, ask the servicer to
perform safety checks to confirm that the unit is in proper working
condition.
The servicer will require all components to service your system.
Therefore, should service ever be necessary, be sure to bring the
entire system.
For product information or assistance with product operation:
In the U.S.A., refer to “Customer Services Directory” on page 35.
In Canada, contact the Panasonic Canada Inc. Customer Care
Centre at 1-800-561-5505, or visit the website
(www.panasonic.ca), or an authorized Servicentre closest to
you.
Clean this unit with a soft, dry cloth.
≥Never use alcohol, paint thinner or benzine to clean this unit.
≥Before using chemically treated cloth, carefully read the
instructions that came with the cloth.
Product information
Maintenance
Before moving the unit, ensure the disc trays are empty.
Failure to do so will risk severely damaging the discs and the
unit.
Glossary
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.
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.
I: Intra coded picture
This picture has the best quality and is the best to use when
adjusting the picture.
P: Predictive coded picture
This picture is calculated based on past I or P-pictures.
B: 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.
Sampling frequency
Sampling is the process of converting the heights of sound wave
(analog signal) samples taken at set periods into digits (digital
encoding). Sampling frequency is the number of samples taken per
second, so larger numbers mean more faithful reproduction of the
original sound.
Abkhazian: 6566
Afar: 6565
Afrikaans: 6570
Albanian: 8381
Ameharic: 6577
Arabic: 6582
Armenian: 7289
Assamese: 6583
Aymara: 6588
Azerbaijani: 6590
Bashkir: 6665
Basque: 6985
Bengali; Bangla:6678
Bhutani: 6890
Bihari: 6672
Breton: 6682
Bulgarian: 6671
Burmese: 7789
Byelorussian: 6669
Cambodian: 7577
Catalan: 6765
Chinese: 9072
Corsican: 6779
Croatian: 7282
Czech: 6783
Danish: 6865
Dutch: 7876
English: 6978
Esperanto: 6979
Estonian: 6984
Faroese: 7079
Fiji: 7074
Finnish: 7073
French: 7082
Frisian: 7089
Galician: 7176
Georgian: 7565
German: 6869
Greek: 6976
Greenlandic: 7576
Guarani: 7178
Gujarati: 7185
Hausa: 7265
Hebrew: 7387
Hindi: 7273
Hungarian: 7285
Icelandic: 7383
Indonesian: 7378
Interlingua: 7365
Irish: 7165
Italian: 7384
Japanese: 7465
Javanese: 7487
Kannada: 7578
Kashmiri: 7583
Kazakh: 7575
Kirghiz: 7589
Korean: 7579
Kurdish: 7585
Laotian: 7679
Latin: 7665
Latvian, Lettish: 7686
Lingala: 7678
Lithuanian: 7684
Macedonian: 7775