Denon DN-790R Operations Instructions download pdf (Page 15)

MAINTENANCE

• Removing the cassette compartment cover

It will be more convenient if the cassette compartment cover is

removed during the cleaning of the pinchroller and heads, or during

demagnetizing of heads.

Follow these procedures:

1. Press the EJECT button to open the cassette compartment.

2. Hold only the cover of the cassette compartment and pull it up. The

compartment cover is removed from the front.

When attaching the cassette compartment cover, reverse the above procedure.

• Head Cleaning

After long usage, tape coating or dust may adhere to the heads, causing deterioration

of sound. Clean them regularly. Use a cotton swab moistened with cleaning solution

(such as alcohol).

Note:

1. Some cleaning cassettes on the market have a strong abrasive effect

and scratch the heads. Use cotton swab instead of cleaning cassettes.

2. Since the use of metal tapes is apt to collect more dust on the heads,

clean the heads more often to enjoy optimum sound.

• Cleaning the Pinchroller and the Capstan

If the pinchroller or the capstan accumulate dust, tape transport may become

unstable resulting from slippage during recording or playback. The tape can also be

damaged by being rolled up around the capstan. Clean them with a cotton swab or

soft cloth moistened with cleaning solution (such as alcohol).

• Demagnetizing the Heads

The heads may become magnetized after long usage or by having a strongly

magnetized object brought neat them. The result is a generation of noise, loss of the

high frequency range, or erasing the treble components of pre-recorded tapes and

adding noise.

Demagnetize the heads on a regular basis.

• Procedure

1. Be sure to turn "off" the power supply.

2. Turn the demagnetizer "on" while it is more than 30cm away from the heads.

Bring the demagnetizer near the heads and slowly move it in a small circle four or

five times.

3. Slowly move the demagnetizer away from the heads and turn "off" the power of

the demagnetizer when it is about 30cm away from the heads.

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Denon DN-790R Operations Instructions Page 15