Panasonic RX-DT650 - Manual (Page 26)

Maintenance
Maintenance of external surfaces
To clean this unit, use a soft, dry cloth.
If the surfaces are extremely dirty, use a soft cloth dipped in a soap-
and-water solution or a weak detergent solution.
Wring the cloth well before wiping the unit.
Wipe once again with a soft, dry cloth.
Never use alcohol, paint thinner, benzine, or chemically treated
cloths to clean this unit. Such chemicals may damage the finish of
your unit.
Lens care
Open the disc lid and clean the lens with a blower (not included). If
the lens is extremely dirty, clean it with a cotton swab.
Tape head care
To assure sound quality for recording and playback, be sure to clean
the tape heads after approximately every 10 hours of use.
1. Press STDBY c!) (AC)/ON to turn the unit off.
2. Press STOP/EJECT to open the cassette holder.
3. Clean the tape heads, pinch rollers and the capstan shafts with a
cotton swab (or a soft, lint-free cloth) slightly moistened with
isopropyl alcohol.
Do not use any solution other than alcohol for head cleaning.
Tape head demagnetization
In order to maintain good sound quality, it is recommended that the
head assembly be demagnetized when distortion or poor sound quality
persists after cleaning the head. If the head assembly becomes
magnetized, it could create loss of high frequency response.
Several types of head demagnetizers are available and may be
purchased separately at local electronics supply stores. Follow the
instructions that are supplied with the device.
Do not bring any type of metal objects or tools such as magnetic
screwdrivers in contact with the head assembly.