AVR310 harman/kardon
Troubleshooting Guide
SYMPTOMCAUSESOLUTION
Unit does not function when MainY No AC PowerY Make certain AC power cord is plugged into
Power Switch is pusheda live outlet
Y Check to see if outlet is switch-controlled
Display lights, but no soundY Intermittent input connectionsY Make certain that all input and speaker connections
or pictureY Mute is onare secure
Y Volume control is downY Press Mute button
Y Turn up 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 32 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 depot
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 configuratioin
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 front panel sensor is visible to remote
or connect remote sensor
Intermittent buzzing in tunerY Local interferenceY Move unit or antenna away from computers, fluorescent
lights, motors or other electrical appliances
Letters flash in the Channel IndicatorY Digital audio feed pausedY Resume play for DVD
Display and Digital Audio stopsY Check that Digital Input is selected
Processor Resetdelay times and speaker configuration data,speakers, output levels, surround modes, digital
first put the unit in Standby by pressing theinput assignments as well as the tuner presets.
In the rare case where the unitOs operation orSystem Power Control button 2. Next,After a reset the unit will be returned to the
the displays seem abnormal, the cause maypress and hold the Tone Mode 6 and thefactory presets, and all settings for these items
involve the erratic operation of the systemOsFM Mode Selector @ buttons for three must be reentered.
memory or microprocessor.seconds.
If the system is still operating incorrectly, there
To correct this problem, first unplug the unitThe unit will turn on automatically and displaymay have been an electronic discharge or
from the AC wall outlet and wait at least threethe RESET message in the Mainsevere AC line interference that has corrupted
minutes. After the pause, reconnect the ACInformation Display Y. Note that once youthe memory or microprocessor.
power cord and check the unitOs operation. Ifhave cleared the memory in this manner, it is
the system still malfunctions, a system resetnecessary to re-establish all system configurationIf these steps do not solve the problem, consult
may clear the problem.settings and tuner presets.an authorized Harman Kardon service depot.
To clear the AVR 310Os entire system memoryNOTE: Resetting the processor will erase any
including tuner presets, output level settings,configuration settings you have made for
14 TROUBLESHOOTING |
ACEC
