Audio Research VT80 - Maintenance; Vacuum Tubes; Servicing; Caution

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Maintenance
the Customer Support Department of
Audio Research Corporation at service
@audioresearch.com. You may also initiate
a service request by visiting the Audio
Research website (www.audioresearch.com)
and selecting ‘Service Repair’.
Cleaning
To maintain the new appearance of this
amplier, occasionally wipe the front
panel and top cover with a soft, damp
(not wet) cloth to remove dust when the
unit is powered o. A mild, non-alkaline
soap solution may be used to remove
ngerprints or similar smudges. Cleaners
containing abrasives should not be used as
they will damage the anodized nish and the
acrylic insert of the front panel. A small, soft
paintbrush is eective in removing dust from
bevels and other features of the front panel.
Disposal and Recycling Guidelines
To dispose of this electronic product, do
not place in landll. In accordance with
the European Union Waste Electrical and
Electronic Equipment (WEEE) directive
eective August 2005, this product
may contain regulated materials which
upon disposal require special reuse and
recycling processing.
Please contact your dealer or importing
distributor for instructions on proper
disposal of this product in your country. Or,
visit audioresearch.com for the name of your
importing distributor and how to contact
them. Packing and shipping materials may
be disposed of in a normal manner.
Vacuum Tubes
It is recommended that you replace the
vacuum tubes of your VT80 in sets. All of the
tubes in your amplier have been matched
to have similar operating characteristics,
to provide the best sound quality and
reliability. In the event you need to replace
a single output tube, please refer to the
numbers written on the silver base at the
bottom of the vacuum tube. Audio Research
recommends replacing output tubes after
2,000 hours of operation.
Servicing
Because of its careful design and exacting
standards of manufacture, your VT80
amplier should normally require only
minimal service to maintain its high level
of performance. Your VT80 is equipped with
individual fuses for each output tube. This
is to prevent circuit board damage should a
tube arc occur. These fuses are accessed on
the underside of the circuit board adjacent to
each tube. In the event a fuse opens, consult
a qualied service technician or Audio
Research Customer Service. High voltages
can exist long after the unit is turned o.
Use extreme caution.
Caution
Your VT80 amplier contains sucient levels
of voltage and current to be lethal. Do not
tamper with a component or part inside the
unit. Even with the power turned o, a charge
remains in the energy storage capacitors for
some time. Refer any needed service to your
authorized Audio Research dealer or another
qualied technician. Additional questions
regarding the operation, maintenance or
servicing of your amplier, please contact