AVR7300(120v)-OM 6/14/04 9:16 AM Page 56
AVR7300 harman/kardon
TROUBLESHOOTING GUIDE
SYMPTOMCAUSESOLUTION
Unit does not function when MainY No AC PowerY Make certain that the AC power cord is plugged into a live outlet
Power Switch is pushedY Check to see whether the outlet is switch-controlled
Display lights, but no soundY Intermittent input connectionsY Make certain that all input and speaker connections are secure
or pictureY Mute is onY Press Mute Button33
Y Volume control is downY Turn up the volume control
Unit turns on, but front-panel Y Display brightness is turned offY Follow the instructions in the Display Brightness section
display does not light upon page 42 so that the display is set to VFD FULL
No sound from any speaker;Y Amplifier is in protection mode Y Check speaker wire connections for shorts at receiver and
light around power switch is reddue to possible shortspeaker ends
Y Amplifier is in protection mode Y Contact your local Harman Kardon service center
due to internal problems
No sound from surround orY Incorrect surround modeY Select a mode other than Stereo
center speakersY Input is monauralY There is no surround information from mono sources
Y Incorrect configuration Y Check speaker mode configuration
Y Stereo or Mono program materialY The surround decoder may not create center- or rear-channel
information from nonencoded programs
Unit does not respond toY Weak batteries in remoteY Change remote batteries
remote commandsY Wrong device selectedY Press the AVR selector
Y Remote sensor is obscuredY Make certain that the front-panel sensor is visible to the remote,
or connect remote sensor
Intermittent buzzing in tunerY Local interferenceY Move the unit or antenna away from computers, fluorescent
lights, motors or other electrical appliances
An UNLOCK message appears Y The type of digital audio stream Y Wait a second or two for the unitOs processor to recognize the new data
in the display and/or the letters has been changed stream and automatically resume playback
in the Channel Indicator display flash Y Digital audio feed pausedY Resume DVD playback.
at the same time as the audio stops
In addition to the items shown above, additional information on troubleshooting possible problems with your AVR 7300, or installation-related issues, may be found in the
list of OFrequently Asked Questions� which is located in the Product Support section of our Web site at www.harmankardon.com.
Processor Resetin Standby by pressing the Standby/On Button 1.If the system is still operating incorrectly, there may
Next, press and hold the Surround Mode Grouphave been an electronic discharge or severe AC line
In the rare case where the unitOs operation or the dis-interference that has corrupted the memory or
Selector 2 and the Tuner Mode Selector 8
plays seem abnormal, the cause may involve the erraticbuttons for three seconds.microprocessor.
operation of the systemOs memory or microprocessor.
The unit will turn on automatically and display theIf these steps do not solve the problem, consult an
To correct this problem, first unplug the unit from theRESET message in the Upper Display Line $.authorized Harman Kardon service center.
AC wall outlet and wait at least three minutes. After the
pause, reconnect the AC power cord and check theNOTE: Resetting the processor will erase any configu-
unitOs operation. If the system still malfunctions, a ration settings you have made for speakers, output
system reset may clear the problem.
levels, surround modes, digital input assignments as
well as the tuner presets. After a reset the unit will be
To clear the AVR 7300Os entire system memory
returned to the factory presets, and all settings for
including tuner presets, output level settings, delaythese items must be reentered.
times and speaker configuration data, first put the unit
56 TROUBLESHOOTING GUIDE
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ACEC
HARMAN KARDON
