[. . . ] Should water get into your NAD 510, shut off the power to the unit and remove the plug from the AC socket. Have the unit inspected by a qualified service technician before attempting to use it again. As with most digital circuits, the processor inside your CD player may radiate a small amount of electrical `noise' which could interfere with reception of very weak radio or TV signals. [. . . ] For CDs with more than 20 tracks, the 20+ indicator illuminates until all the tracks have been played. ERROR The Error indicator is displayed when an `illegal' button sequence is used, such as pressing any of the controls apart from OPEN/CLOSE when there is no disc in the CD Tray. Other common `illegal' button sequences that will produce the Error display are pressing PAUSE, TIME or SCAN when the NAD 510 is in Stop mode. Press PLAY to start playing the CD from the start of the track shown in the Display Panel. Pressing PLAY with the CD Tray open and a CD loaded, will close the CD Tray and start playing the CD from Track 1. Pressing Play again when the CD is already playing, will re-start playback from the beginning of the current track. when the 510 is in Play mode , the Play mode indicator will be shown in the Display Panel. This will also show the current track number and position in the track in minutes and seconds. Pressing PAUSE stops CD playback, without loosing the current position on the CD. Pressing PAUSE twice will cue up the beginning of the current track, whilst keeping the NAD 510 in Pause mode. Both SCAN and SKIP can be used in the Pause mode to select other tracks, or another position on the current track before returning to play the CD. When the 510 is in Pause mode, the Play mode indicator will flash and the Display Panel will show the current track number and position in the track in minutes and seconds. The STOP button stops disc playing, cancels any Repeat mode, and returns the 510 to the start of the disk. In Stop mode, the Display Panel will show the total number of tracks and the total playing time of the disc. Press RANDOM either from Stop or Play modes and the 510 will play the tracks on the CD in random order until all the tracks have been played. Press RANDOM button again to cancel Random play and return the 510 to the normal Play mode. [. . . ] The SCAN buttons fast forward or fast reverse through the tracks on the disc, giving an audible indication of the contents of the tracks. If you have followed the instructions and are still having difficulty operating your compact disc player, locate the PROBLEM in the left hand column below. The disc is loaded upside down The disc is too dirty Make sure that the input selector on your amplifier or receiver is set to CD. [. . . ]