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10
Troubleshooting
Your Knoll amplifier is designed from trouble-free operation. If you follow the
instructions in this manual, you should enjoy many years of high-quality listening
enjoyment. However, as with any sophisticated device, there may be occasional
problems upon initial installation, or during the life of the amp. The items on the list
below are a brief guide to the minor problems that you may be able to correct
yourself. If these solutions do not help, or if the problem persists, contact us for
assistance at 1800 566 5579 in Canada or the USA or 604 940 1689. We are in the
Pacific time zone.
Problem
Amplifier won't turn on
Amplifier turns on, but no audio
from one or more channels
No audio from one or more
Channels
Audio levels differ from sources
Audio plays and then cuts off
Care, maintenance, and cleaning
When the GRS44 amp becomes dirty, wipe it with a clean, dry, soft cloth. If necessary, first
wipe the surface with a slightly dampened soft cloth with mild soapy water, then with a fresh
cloth dampened with clean water. Wipe dry immediately with a dry cloth. NEVER use benzene,
thinner, alcohol, or any other volatile cleaning agent. Do not use abrasive cleaners, as they
will damage the finish of the metal parts. Avoid spraying insecticide, waxes, polishing agents,
or any aerosol product near the GRS44.
Solutions
Master power switch turned off (No power light LED).
Turn on Master Power Switch.
Input plugs not connected to proper jack or are loose.
Check input connections.
Speakers are not connected properly. Check speaker
connections at amp and speaker.
Improper settings or output levels from source device.
Check the settings on your preamp, processor or
controller. Also verify gain settings on the source
inputs on the GRS44 rear panel.
Amplifier may be shorted. Check speaker connections
for short-circuit at amp and speaker.
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