Troubleshooting Guide; Processor Reset - Harman Kardon AVR 240 Owner's Manual

SYMPTOM
Unit does not function when Main
Power Switch is pushed
Display lights, but no sound
or picture
No sound from any speaker;
light around power switch is red
No sound from surround or
center speakers
Unit does not respond to
remote commands
Intermittent buzzing in tuner
Letters flash in the channel indicator
display and digital audio stops
In addition to the items shown above, additional information on troubleshooting possible problems with your AVR 240, or installation-related issues, may be found in the list of
"Frequently Asked Questions" which is located in the Product Support section of our Web site at www.harmankardon.com.

Processor Reset

In the rare case in which the unit's operation or the dis-
plays seem abnormal, the cause may involve the erratic
operation of the system's memory or microprocessor.
To correct this problem, first unplug the unit from the
AC wall outlet and wait at least three minutes. After the
pause, reconnect the AC power cord and check the
unit's operation. If the system still malfunctions, a sys-
tem reset may clear the problem.
To clear the AVR 240's entire system memory includ-
ing tuner presets, output level settings, delay times
and speaker configuration data, first place the AVR in
Standby Mode, and then press and hold the Tone
Mode Button 5 button for three seconds. The unit
will turn on automatically.
CAUSE
• No AC Power
• Intermittent input connections
• Mute is on
• Volume control is down
• Amplifier is in protection mode
due to possible short
• Amplifier is in protection mode
due to internal problems
• Incorrect surround mode
• Input is monaural
• Incorrect configuration
• Stereo or Mono program material
• Weak batteries in remote
• Wrong device selected
• Remote sensor is obscured
• Local interference
• Digital audio feed paused
NOTE: Resetting the processor will erase any configu-
ration settings you have made for speakers, output
levels, surround modes, digital input assignments as
well as the tuner presets. Before performing a proces-
sor reset, we suggest that you record your current
system settings on the worksheet found on page 62.
The unit will be returned to the factory presets, and all
settings for these items must be reentered.
If the system is still operating incorrectly, there may
have been an electronic discharge or severe AC line
interference that has corrupted the memory or
microprocessor.
If these steps do not solve the problem, consult an
authorized Harman Kardon service center.

TROUBLESHOOTING GUIDE

SOLUTION
• Make certain AC power cord is plugged into
a live outlet
• Check to see whether outlet is switch-controlled
• Make certain that all input and speaker connections
are secure
• Press Mute Button
• Turn up volume control
• Check speaker wire connections for shorts at receiver and
speaker ends
• Contact your local Harman Kardon service center
• Select a mode other than Stereo
• There is no surround information from mono sources
• Check speaker mode configuration
• The surround decoder may not create center- or rear-channel
information from nonencoded programs
• Change remote batteries
• Press the AVR selector
• Make certain front panel sensor is visible to remote
or connect remote sensor
• Move unit or antenna away from computers, fluorescent
lights, motors or other electrical appliances
• Resume play for DVD
• Check that Digital Input is selected
TROUBLESHOOTING 59