Harman Kardon TD420 - Tape Head Maintenance; Tape Care and Protection

"Remote Output" jack to the "Remote
Input" of another stereo component.)
Alternatively, if you have a stereo
component with a built-in infrared
remote sensor and a "Remote Output"
jack, it may be possible to connect this
jack to the "Remote input" jack of your
cassette deck. Not all components are
compatible, but it will not hurt to
experiment.
Once your deck is connected, you will
need a compatible remote control
commander. One such commander is
the remote control unit from Harman
Kardon’s TD450 cassette deck,
available through Harman Kardon’s
Parts Department.
In addition, most Harman Kardon
Receivers include a System Remote
Control which will control the functions
of the cassette deck.
CD Sync Connection
Connect the TD420 "Remote Out" jack
to the “Remot In” jack on a Harman
Kardon Cd Player.
Cleaning the Tape Heads
Tape heads must be cleaned
periodically to remove tape particles,
which gradually build up on the heads,
impairing sound quality and increasing
wear on tapes. Heads may be cleaned
in either of two ways:
1. Slightly dampen a cotton swab in
isopropyl alcohol and gently rub the
-Surfaces of each tape head. Use a
second dampened swab to clean
other surfaces coated with tape
material. Repeat this cleaning
every 30 tapes. The TD420 is
equipped with an access hole on
the top of the unit to facilitate
cleaning of the heads. Be careful
not to lose the cover to this access
hole.
2. Use a tape head cleaning kit,
which comes in the form of a tape
cassette, and is simply inserted into
the deck. Follow the instructions
included with the kit.
Demagnetization
Tape heads and other internal parts
gradually pick up magnetic fields,
which can add noise to your tapes and
even partially erase them. To prevent
this problem, tape heads should be
periodically demagnetized.
A battery-powered demagnetizer is
easiest to use. It comes in the form of
a tape cassette and is simply inserted
into the deck. Be certain to use this
demagnetizer as frequently as its
instructions recommend.
Care of Tape
1. Store cassettes in their cases, in
a location away from direct sunlight,
excessive heat and high humidity.
2. Avoid placing a tape near a
television set or loudspeaker; their
magnetic fields can partially erase
the tape.
3. To prevent accidental erasure of
a tape, use a small screwdriver to
remove the two square tabs located —
on the side of the cassette opposite
the exposed tape. With these tabs
removed, the tape cannot be
recorded. If you later wish to record
an erasure-protected tape, simply
cover the smail holes with adhesive
tape.
4. Do not use old cassettes whose
tape no longer moves smoothly
from reel to reel. They may jam
and damage your deck.