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Knoll Systems service information
The GSZ67 amplifier does not contain any user serviceable parts inside. If you suspect a
problem that may require servicing, contact us at www.knollsystems.com/contact.html, or by
phone at 800 566-5579. It is extremely important that only an authorized service dealer make
any repairs. This will ensure proper service and preserve the protection of your warranty.
Keep your receipt in a safe place so that it will be available to verify the purchase date, should
you experience a problem covered by Knoll System’s warranty.
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.
Problem
Solutions
Amplifier won’t turn on
Master power switch turned off (No power light LED).
Turn on Master Power Switch.
Amplifier turns on, but no audio
Input plugs not connected to proper jack or are loose.
from one or more channels
Check input connections.
No audio from one or more
Speakers are not connected properly. Check speaker
Channels
connections at amp and speaker.
Audio levels differ from sources
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 GSZ67 rear panel.
Audio plays and then cuts off
Amplifier may be shorted. Check speaker connections
for short-circuit at amp and speaker.
Care, maintenance, and cleaning
When the GSZ67 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 GSZ67.
