Panasonic RX-DT770 - Manual (Page 26)

Troubleshooting Guide
Problem Probable cause(s) Suggested remedy Page
While using the remote control
No operation. Are the batteries flat? Replace them with new ones. 5
Have the batteries been installed incorrectly
with their { + ) and (-) polarities reversed?
Align the (-t-) and (-) polarities correctly.
5
is the remote control’s transmitter pointed at
the unit’s sensor?
Check whether anything is obstructing the
path between the two and point the remote
control squarely at the unit’s sensor and operate.
5
Is the unit’s sensor exposed to direct sunlight
or strong fluorescent light?
Shield the sensor from strong sources of light.
5
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 doth.
Never use alcohol, paint thinner, benzine, or chemically treated
cloths to clean this unit. Such chemicals may damage the finish of
your system.
Lens care
1. Press ± CD EJECT on the front panel.
2. Clean the lens with a blower (not included). If the lens is ex­
tremely 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. Open the cassette compartment cover by pressing STOP/EJECT.
2. Clean the portions which contact the tape (the shaded portions
in the figure below) with a cotton swab.
Do not use any solution other than alcohol for head cleaning.
Capstan
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 be­
comes magnetized, it could create loss of high end frequency re­
sponse,
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.