Sony CFD-ZW770 Operating Instructions (primary manual) - Page 34

Maintenance Cleaning the lens If the lens becomes dirty, it may cause a skipping of sound during CD operation. Clean with a commercially available blower. Cleaning the tape heads and tape path Wipe the heads, the pinch rollers and the capstans with a cleaning swab slightly moistened with cleaning fluid or alcohol after every 10 hours of operation for optimum playback and recording quality. To make the best possible recording, however, we recommend that you clean all surfaces over which tape travels before each recording. Demagnetizing the tape heads After 20 to 30 hours of use, enough residual magnetism will have built up on the tape heads to begin to cause loss of high frequency sound and hiss. At this time, you should demagnetize the heads and all metal parts in the tape path with a commercially available tape head demagnetizer. Cleaning the cabinet Clean the cabinet, panel and controls with a soft cloth slightly moistened with a mild detergent solution. Do not use any type of abrasive pad, scouring powder, or solvent, such as alcohol or benzine. Playback head Capstan Deck A Pinch roller Lens Deck B Record/playback head Capstan Erase head Pinch roller After cleaning, insert a tape when the areas cleaned are completely dry. 34 Additional Information