Read Harman Kardon SIGNATURE 1.5 (serv.man5) Service Manual online
7
Two Channel Amplifier
Harman Kardon
SIGNATURE 1.5
TROUBLE SHOOTING
The items listed below are a brief guide to minor problems that may arise with audio equipment such as the Signature 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
DIAGNOSIS
TROUBLESHOOTING HINTS
Amplifier will not turn on.
n Power Switch turned off.
n Turn on Power Switch
(No Power Light LED)
n Remote trigger cable not
n Verify connection of trigger cable
properly connected.
at both ends
Amplifier turns on, but no audio
n Inputs not connected to
n Check input connections.
From One or more channels
proper jack.
n Speakers not connected
n Check speaker connections.
Properly.
n Improper settings or output
n Check the settings on your preamp,
levels from processor or
processor or controller.
Controller.
Audio plays, then cuts off.
n Amplifier shorted
n Check speaker connections for
(LED flashes amber and red).
Short circuit.
PROTECT MODE
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 protect mode,
contact your dealer or installer for assistance.
Click on the first or last page to see other SIGNATURE 1.5 (serv.man5) service manuals if exist.