Rotel HDCD Single Play Compact Disc Player RCD-1072 Spécifications télécharger pdf (Page 17)

, HDCD

, High Definition Compatible Digital

and

Microsoft™ are either registered trademarks or

trademarks of Microsoft Corporation in the United States and/or

other countries.

HDCD system manufactured under license from Microsoft

Corporation. This product is covered by one or more of the

following patents: In the USA: 5,479,168, 5,638,074, 5,640,161,

5,808,574, 5,838,274, 5,854,600, 5,864,311, 5,872,531, and in

Australia: 669114. Other patents pending.

ABOUT THE OPTICAL PICKUP

The Compact Disc player uses a solid-state semi-conductor diode

laser, mounted on a tracking servo-mechanism, to play the disc.

The laser illuminates the track of microscopic pits representing

the digital data bits, while photo-diodes detect the reflected

illumination from the disc and convert it into an electronic signal

which is then decoded to recover the musical waveform in each

stereo channel.

You cannot see the laser operating, because it operates at

wavelength of 7800 Angstroms, which is in the infrared and thus

invisible to the human eye.

The Compact Disc player is completely safe for children to use.

The laser operates at very low power and is concealed within the

player mechanism. Even when the player is disassembled, the

laser remains sealed within an optical system that causes its light

to focus only 1 millimeter from the lens and then diverge rapidly,

reducing its intensity to negligible levels.

TROUBLESHOOTING

NO POWER WHEN THE POWER BUTTON

IS SET TO ON

• Poor or no power plug connection at

• Trigger switch is set to Auto

the AC outlet

• Insert the power plug firmly into the AC

outlet.

SYMPTOM POSSIBLE CAUSE SOLUTION

DISC PLAY DOES NOT START • The disc is loaded upside down

• The disc is too dirty

• Reload the disc with the label side UP

• Clean the disc

NO SOUND • Incorrect audio cable connections

• Incorrect amplifier/receiver operation

• Connect the CD player to the

amplifier/receiver correctly

•Makesurethattheinputselectoron

your amplifier or receiver is set to CD

SOUND SKIPS • The CD player is subject to vibration or

physical shock from external sources

• Change the installation location

REMOTE CONTROL DOES NOT WORK • Batteries in Remote Control handset

have expired

• Object obscuring remote sensor

on the player

• Replace batteries

• Remove any objects directly in front of

the player

A “HUMMING” SOUND CAN BE HEARD • Loose cable connections • Check the cable connections,

particularly the phono connecting

cables

flawed discs that are unplayable on some other players.

Nevertheless, the discs should not be abused or handled

carelessly. For best results, grasp the disc only by its edges.

CLEANING DISCS

Soiled discs may be cleaned by wiping with a soft cloth, either dry

or moistened, with water. Do NOT use conventional LP record-

cleaning products (cleaning solutions, sprays, treated cloths, or

anti-static preparations), nor any kind of chemical solvent

(alcohol, benzene, et al). A severely soiled disc may be washed in

a warm-water spray, possibly with a small amount of a mild kitchen

detergent added, and then wiped dry with a clean, soft towel.

When cleaning the disc, use only RADIAL strokes (from centre to

edge). Never use a circular wiping motion like that used for

cleaning ordinary LP records, because in wiping the disc there is a

risk of scratching it. A radial scratch will do the least harm because

it affects only a small portion of each circular data track, which can

be fully compensated by the player’ s error-correction circuits. But

a circular scratch that follows a data track may damage such a long

continuous segment of data that it cannot be corrected.

MAINTENANCE

At periodic intervals, open the disc drawer and wipe with a damp

cloth to remove any loose dust.

HANDLING COMPACT DISCS

Handle Compact Discs with care. The playback of a disc will not

be impaired by small dust particles, a few light fingerprints, or

slight scratches. But large scratches, or a thick layer of oily

fingerprints, can pre-vent the player from tracking the disc.

(Incidentally, although the tracking optical pickup “plays” the

disc through its clear side, the actual data surface is embedded

directly beneath the label, protected only by a very thin coating of

lacquer. So a scratch that cuts through the label may damage the

disc more than a similar scratch on the transparent “playing”

surface. Thus you should treat both surfaces of the disc with

care.) Severe scratches or fingerprints may cause the player to

mis-track (skipping ahead, or repeating the same passage). Less

severe damage may produce very brief bursts of high-frequency

noise. The tracking and error-correction circuits of this NAD CD

player are unusually sophisticated, providing secure tracking of

general, the quality of a CD-R, CD-RW are better when produced at a

lower speed against a higher speed on the same recorder or re/writer.

Switch the trigger switch to off position

•

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Rotel HDCD Single Play Compact Disc Player RCD-1072 Spécifications Page 17

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