Panasonic sa-ht680 User Manual

30

RQT7969

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 31.
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.

Do not use commercially available lens cleaners as they may 
cause malfunction. (Cleaning the lens is generally not necessary 
although this depends on the operating environment.)

The model number and serial number of this product can be 
found on either the back or the bottom of the unit.
Please note them in the space provided below and keep for 
future reference.

MODEL NUMBER 

SC-HT680

SERIAL NUMBER 

Before moving the unit, ensure the disc trays are empty. 
Failure to do so will risk severely damaging the discs and the unit.

A decoder restores the coded audio signals on DVD’s to normal. 
This is called decoding.

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.

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 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.

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.

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.

These are uncompressed digital signals, similar to those found on CD’s. 

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

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

Malagasy:

7771

Malay:

7783

Malayalam:

7776

Maltese:

7784

Maori:

7773

Marathi:

7782

Moldavian:

7779

Mongolian:

7778

Nauru:

7865

Nepali:

7869

Norwegian:

7879

Oriya:

7982

Pashto, Pushto:

8083

Persian:

7065

Polish:

8076

Portuguese:

8084

Punjabi:

8065

Quechua:

8185

Rhaeto-Romance:

8277

Romanian:

8279

Russian:

8285

Samoan:

8377

Sanskrit:

8365

Scots Gaelic:

7168

Serbian:

8382

Serbo-Croatian:

8372

Shona:

8378

Sindhi:

8368

Singhalese:

8373

Slovak:

8375

Slovenian:

8376

Somali:

8379

Spanish:

6983

Sundanese:

8385

Swahili:

8387

Swedish:

8386

Tagalog:

8476

Tajik:

8471

Tamil:

8465

Tatar:

8484

Telugu:

8469

Thai:

8472

Tibetan:

6679

Tigrinya:

8473

Tonga:

8479

Turkish:

8482

Turkmen:

8475

Twi:

8487

Ukrainian:

8575

Urdu:

8582

Uzbek:

8590

Vietnamese:

8673

Volapük:

8679

Welsh:

6789

Wolof:

8779

Xhosa:

8872

Yiddish:

7473

Yoruba:

8979

Zulu:

9085

HT680.book  Page 30  Tuesday, December 14, 2004  8:55 AM