Read Harman Kardon PA 5800 (serv.man2) Service Manual online
7
Multichannel Power Amplifier
Harman Kardon
PA5800 / SIGNATURE 2.1
TROUBLE SHOOTING
The items listed below are a brief guide to minor problems that may arise with audio equipment such as the PA5800/2.1.
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 at both ends
properly connected.
Amplifier turns on, but no
n Inputs not connected to
n Check input connections.
audio from one or more channels
proper jack.
n Speakers not connected Properly.
n Check speaker connections.
n Improper settings or output levels
n Check the settings on your preamp,
from processor or controller.
processor or controller.
Audio plays, then cuts off.
n Signature 2.1 - amplifier shorted
n Check speaker connections for Short circuit.
(LED flashes amber and red).
n PA5800 - amplifier shorted
(LED flashes amber)
Hum
n Signature 2.1 - Objectionable hum
n Certain types of half-power light dimmers on the same
(coming from unit itself, not from
AC circuit may cause this, or any other electronic device
loudspeakers).
That introduces DC into the AC circuit the unit is plugged
into. Remove offending device; or plug the unit into a
different AC circuit. Otherwise: If upon internal inspection
the POWER SWITCH PCBdoes not have the designator
HA206-0003-C printed on it (near the relays), order this
board by part number HA206-0003-C from Harman.
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.
Signature 2.1
When this happens, the LED Power Indicator will flash and
When this happens, the LED Power Indicator will flash and
alternate between red and amber.
PA5800
When this happens, the LED power indicator will flash
When this happens, the LED power indicator will flash
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.
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