Denon DRM-710 - Page 10

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DOLBY HX-PRO HEADROOM EXTENSION SYSTEM
This deck is equipped with the DOLBY HX-PRO headroom
extension system. Since the system functions automatically
during recording, no switching operation or adjustment is
required. The system is effective with any type of Normal,
CrO: or Metal tapes.
The Dolby HX-PRO headroom extention system functions
during recording to lift up the saturation level in the treble
range. Therefore, most of the treble range components
distorted or lost during recording on conventional cassette
decks are more faithfully recorded on the new DRM -710
cassette deck.
MAINTENANCE
Features of the DOLBY HX-PRO headroom extension
system
(1) Performance of Normal and CrO; tapes can be up-
graded closer to that of Metal tapes.
(2) The dynamic range in the treble is improved signifi-
cantly.
(3) Since no decoding in playback is necessary, the
improvement can be obviously heard on any hi-fi
playback system including portable components and
car systems.
(4) The system functions whether the Dolby B/C NR is
engaged or not.
B Removing the cassette compartment cover
It wil! 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:
l. Press the EJECT button to open the cassette com-
partment.
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.
MW 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 da-
maged by being rolled up around the capstan.
Clean them with a cotton swab or a soft cloth moistened
with cleaning solution (such as alcohol).
M 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
swabs 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.
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B Demagnetizing the heads
The heads may become magnetized after long usage or
by having a strongly magnetized object brought near 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.
E 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.