Harman Kardon PA 2000, Руководство по обслуживанию

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SERVICE & TROUBLESHOOTING
SYMPTOM CAUSE SOLUTION
Amplifier or one channel will • Power switch turned off • Turn on power switch.
not turn on. (no power light LED)
• Remote trigger cable not properly • Verify connection of trigger cable at both ends.
connected
• Power Control Mode Switch
·
not • Turn the amp off and remove the power cord and check
set to the proper position that the Power Control Mode Switch for the channel that
will not turn on is set to the correct position. See page 8.
Amplifier turns on, but there’s no audio • Inputs not connected to proper jack • Check input connections.
from one or more channels. • Speakers not connected properly • Check speaker connections.
• Improper settings or levels from • Check the settings on your preamp, processor or controller.
processor or controller
Audio plays, then cuts off. • Amplifier shorted • Check speaker connections for short circuit.
(Protect Indicator lights)
No sound is heard from a channel pair • The amplifier has sensed an overload • Turn the amp off and remove the power cord. Check all
and a Protect Indicator
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is lit. condition or short and has put the amp speaker connections to make certain that there are no
in the Protect mode to prevent damage shorted conductors.
to the amp or your speakers
No sound from BOTH Channels 1 and 2 • An overload or short condition may have • Turn the amp off and remove the power cord. Check
or Channels 3 and 4. caused one of the two fuses to blow the fuses and replace them, if needed, with a fuse
to prevent damage to the amp or of the same rating.
your speakers
Service Information
If your installation has followed the procedures
in this manual, you should enjoy many years of
trouble-free operation and high-quality listening
enjoyment. The PA 4000 does not contain any
user-serviceable parts. If you suspect a problem
that may require service assistance, contact your
dealer, installer or an authorized Harman Kardon
service center.
You may also contact Harman Kardon at
www.harmankardon.com.
It is important that any repairs be carried out
only by an authorized Harman Kardon service
agent to ensure proper service and preserve the
protection of your Limited Warranty. It’s a good
idea to keep your sales slip or receipt in a safe
place (along with this manual) so that it will be
available to verify the purchase date for warranty
claims.
The items listed below are a brief guide to minor
problems that may arise with audio equipment
such as the PA 4000. Before taking a unit in for
service, you should check to see whether any of
these hints solve the problem. If these solutions
do not rectify the problem or if the problem
recurs, contact your dealer or an authorized
Harman Kardon service center for assistance.
Fuse Replacement
In rare situations, the fuses protecting the
PA 4000’s output stages may blow to protect the
unit and your speakers. If any amplifier pair does
not operate, and if the front-panel indicators do
not light, it is possible that a short or overload
condition has caused one of the fuses to blow.
If you suspect that a fuse has blown, follow
these steps:
• Turn the amp off and remove the power cord.
• Check all speaker wire connections – both on
the amplifier side and on the speakers – to
make certain that there are no shorts.
• Remove each fuse and then, if a fuse has
blown, replace it with a replacement of the
same type and rating, as shown on the rear
panel.
• Reconnect the power cord and turn the ampli-
fier on again.
If the amplifier continues to blow fuses or go
into the Protect mode after all connections have
been checked for shorts, there may be an inter-
nal problem with the unit. In that case, contact
your dealer or an authorized Harman Kardon
service center for assistance.
Troubleshooting Guide
PA4000 harman/kardon
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