Processor Reset - Harman Kardon AVR 525 Owner's Manual

SYMPTOM
Unit does not function when Main
Power Switch is pushed
Display lights, but no sound
or picture
Unit turns on, but front panel
display does not light up
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

Processor Reset

In the rare case where 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 525's entire system memory includ-
ing tuner presets, output level settings, delay times and
speaker configuration data, first put the unit in Standby
by pressing the System Power Control Button
CAUSE
• No AC Power
• Intermittent input connections
• Mute is on
• Volume control is down
• Display brightness is turned off
• 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
Next, press and hold the Surround Mode
the Tuner Mode Selector
seconds.
The unit will turn on automatically and display the
RESET message in the Main Information
Display .
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. After a reset the unit will be
returned to the factory presets, and all settings for
these items must be reentered.
.
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
43
• Press Mute Button
• Turn up volume control
• Follow the instructions in the Display Brightness section
on page 36 so that the display is set to VFD FULL
• 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
If the system is still operating incorrectly, there may
and
have been an electronic discharge or severe AC line
buttons for three
interference that has corrupted the memory or
microprocessor.
If these steps do not solve the problem, consult an
authorized Harman Kardon service center.