NAD S500 Time/Display, Installing And Replacing Batteries, Maintenance, Cleaning Discs

7. DISPLAY

The display provides information about playback status and about the laser pickup’s location on the disc. The displayed track/time information is obtained by reading inaudible “sub-codes” in the disc.

TRACK NUMBER Each disc is segmented into numbered tracks when the record is made; typically each numbered track will correspond to a different song, symphonic movement, etc. These track numbers are identified on the CD package and are encoded in the disc by its manufacturer.

The letter “T” is displayed adjacent to the track number in the display. For example, Track 15 is shown “T15” in the display. In some CDs, at the manufacturer’s option, tracks may be sub- divided into sections identified by Index numbers. This player does not display Index numbers.

TIME Normally this display shows in minutes and seconds the time elapsed in the music since the beginning of the current track. When you load a different disc and use the STOP/OPEN button to close the disc drawer, the display shows the number of tracks and the total playing time of all the tracks on the disc.

REMOTE RECEIVER An infrared sensor, located behind the display window, receives commands from the remote control. There must be a clear line-of-sight path from the remote control to this window. If this path is obstructed, the remote control may not work.

REMOTE CONTROL

An infrared remote control is provided with your S500, enabling you to operate playback functions from the comfort of your chair or from virtually anywhere in the room.

For reliable operation there should be a clear line-of-sight path from the remote control to the front of the CD player. If the player does not respond to remote commands, it may be that this line-of-sight path is obstructed by clothing, paper or furnishings.

NUMERIC KEYPAD Most of the buttons on the remote control handset have the same effect as the corresponding buttons on the

GB front panel of the disc player. In addition, the handset is equipped with a direct-entry numeric keypad, which causes the player to jump directly to the beginning of a numbered track and commence play. Thus to play Track 5, simply press 5. To play Track 15, press 1 first, then quickly press 5. To play Track 23, press 2 and 3.

TIME/DISPLAY

The TIME/DISPLAY button cycles the time display through three modes as follows:

TIME The elapsed time since the beginning of the current track, in minutes and seconds. (This is the “default” setting, selected automatically when the player is turned on.)

TOTAL TIME Total elapsed time since the beginning of the disc. REMAIN (track number shows a blank) The total playing time that remains until the end of the disc.

Note that the TIME/DISPLAY function is available from the remote control only.

INSTALLING AND REPLACING BATTERIES

The remote control requires two 1.5-volt AAA-size (i.e. UM-4 or IEC RO3) cells. Alkaline cells are recommended to obtain maximum operating life.

To open the battery compartment, press down in the ribbed area on the back of the remote control unit. The cover of the battery compartment will slide down and off. Install fresh cells, orienting them as shown on the diagram within the compartment. The coil springs should contact the (-) end of each cell. Slide the battery compartment cover back on until it latches.

In some cases, poor operation may be caused by corrosion or fingerprint oil on the battery contacts. Remove both cells, rub the metal contacts at both ends of each cell with a clean cloth or a pencil eraser, and re-install the cells, being careful to orient them correctly.

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 prevent the player from tracking the disc. (Incidentally, although the tracking laser “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. 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 flawed discs that are unplayable on some other players. Nevertheless, the discs should not be abused or handled carelessly.

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 center 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.

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