User manual NAD 523

[. . . ] The lightning flash with an arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitutet a risk of electric shock to persons. The unit should be installed so that its location or position does not interfere with its proper ventilation. For example, it should not be situated on a bed, sofa, rug or similar surface that may block the ventilation openings; or if placed in a built-in installation, such as a bookcase or cabinet, that may impede the flow of air through its ventilation openings, there should be at least 20cm (8 in. The unit should be situated from heat sources such as radiators, heat registers, stoves or other devices (including amplifiers) that produce heat. [. . . ] This button stops play and re-sets the laser to the beginning of the current disc. During Memory Play you can press this button to stop playback without erasing the stored track list. Press to start play or to resume play after Pause. You may press the REPEAT button either before or after pressing PLAY; the effect is the same. Pressing the REPEAT button once selects the REPEAT ALL DISC mode in which all five discs are played continuously in sequence. Pressing REPEAT a second time selects the REPEAT 1 DISC mode, in which the entire current disc is repeated. Pressing REPEAT a third time selects the REPEAT 1 mode, in which the current track is repeated over and over again. Press the REPEAT button a fourth time to cancel the repeat cycle and return to normal operation. nOTE: In the MEMORY mode the REPEAT command repeats the stored program. In the RANDOM play mode the REPEAT ALL DISC command will repeat another Random cycle. During repeat play you may press PAUSE to stop temporarily, and PLAY to resume. Press to stop playback temporarily, keeping the laser at its current position on the disc. To release the Pause mode and resume playback at the exact point where it stopped, press PLAY. If you don't want to resume listening at the same point, you may use the SKIP and SCAN buttons to cue the laser to a different starting point, and then press PLAY. After a STOP command, or after loading a new disc, you must press PLAY (to activate the TIME display) before the scan circuit will work. Do not press NEXT or any of the DISC 1 to 5 buttons during this process. If you do, playback will immediately stop and the tray will close so that the current disc can be returned to its normal place in the tray. NOTE: Take care that each disc is centred within its recess. A disc that protrudes outside of its recess could jam and suffer damage when the drawer closes and the tray revolves. To close the drawer, press either OPEN or PLAY. The DISC number in the display with a circle around it identifies the tray location that is aligned with the optical playback mechanism at the rear of the unit. When the drawer is opened from STOP mode, the carousel revolves. [. . . ] 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 errorcorrection circuits. But a circular scratch that follows a data track may damage such a long continuous segment of data that it cannot be corrected. [. . . ]