Service Information / T
roubleshooting
11
Signature 1.5
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
1.5 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 depot.
You may also contact Harman Kardon via the World
Wide Web 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 is 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.
Input/Output Protection
Under some conditions, such as a shorted speaker wire,
DC voltage on an input connection or thermal overload,
the amplifier will place itself in a Protect mode to prevent
damage to the amplifier. When this happens, the LED
Power Indicator will flash and alternate between red
and amber.
When this occurs, IMMEDIATELY turn off the unit using
the Power Switch and correct the problem. Then turn the
unit back on. If the unit continues to go into a Protect
mode, contact your dealer or installer for assistance.
Troubleshooting Chart
The items listed below are a brief guide to minor problems that may arise with audio equipment such as the 1.5. Before
taking a unit in for service, you should check to see if 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 depot for assistance.
PROBLEM
Amplifier will not turn on.
Amplifier turns on, but no audio from
one or more channels.
Audio plays, then cuts off.
DIAGNOSIS
• Power Switch turned off.
(No Power Light LED)
• Remote trigger cable not
properly connected.
• Inputs not connected to
proper jack.
• Speakers not connected
properly.
• Improper settings or output
levels from processor or
controller.
• Amplifier shorted (LED
flashes amber and red).
TROUBLESHOOTING HINTS
• Turn on Power Switch.
• Verify connection of trigger cable
at both ends.
• Check input connections.
• Check speaker connections.
• Check the settings on your preamp,
processor or controller.
• Check speaker connections for
short circuit.
Sig 1.5 om (b) 9/17/98 10:33 AM Page 11
