Sony CFD-DW83 - Manual (Page 25)

Maintenance
Cleaning the heads and tape path
Contaminated heads cause insufficient recording or sound
drop-out in playback.
We recommend cleaning after every 10 hours of operation.
To make the best possible recordings, however, you should
clean all surfaces over which tape travels before making each
recoding.
Wipe the heads, the pinch rollers and the capstans with a
cleaning tip slightly moistened with cleaning fluid or alcohol.
After cleaning the heads, rollers and tape path, insert a
cassette when the areas cleaned are completely dry.
Demagnetizing heads
After 20 to 30 hours of use, enough residual magnetism will
have built up on the heads to begin to cause loss of high
frequencies and hiss. At this time you should demagnetize
the heads and all metal parts in the tape path with a
commercially available head demagnetizer. Be sure that the
cassette-corder is turned off while you demagnetize.
Cleaning the lens
If you have accidentally touched the lens of the CD player
section with dirty fingers or the dust has accumulated on the
lens, the unit will not operate properly. In such cases, clean
the lens with lens cleaning kit (optional).
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.
25