Audio Research reference dac, User Manual

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Maintenance
Vacuum Tubes
It is recommended that you replace the
vacuum tubes of your Reference DAC in
sets. All of the tubes in your DAC have
been matched to have similar operating
characteristics, to provide the best sound
quality and reliability.
Servicing
Because of its careful design and
exacting standards of manufacture,
your Reference DAC should normally
require only minimal service to maintain
its high level of performance.
Disposal and Recycling Guidelines
To dispose of this electronic product, do
not place in landfill. In accordance with
the European Union Waste Electrical and
Electronic Equipment (WEEE) directive
effective 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, contact Audio Research
Corporation (763-577-9700) for the name
of your importing distributor and how
to contact them. Packing and shipping
materials may be disposed of in a normal
manner.
Cleaning
To maintain the visual appearance of your
Reference DAC, occasionally wipe the front
panel and top cover surfaces with a soft
damp (not wet) cloth to remove dust. A
mild, non-alkaline soap solution may be
used to remove fingerprints or similar
smudges. Cleaners containing abrasives
should not be used as they will damage
the brushed grain of the front panel finish,
as well as the LED display window. A dry
2-inch pure bristle paint brush works well
to remove dust from bevels, reliefs and
switches.
About Fuse Replacement
The Reference DAC has two fuses; the mains
fuse on the back panel, and an internal fuse
towards the front, beneath the toroidal
transformer. To access the internal fuse,
remove the top cover. See specifications for
information on fuse types.
Caution
Your Reference DAC contains sufficient levels
of voltage and current to be lethal. Do
not tamper with a component or parts
inside the unit. Refer any needed service
to your authorized Audio Research dealer
or other qualified technician. Should
service be necessary, please contact your
Audio Research dealer, or Audio Research
Customer Service (763) 577-9700.