Read Harman Kardon AVR 55 (serv.man2) User Guide / Operation Manual online
Troubleshooting Guide
27
AVR55 120 volt Rev (c) 10/1/97
SYMPTOM
No front panel lights when power
switch is pressed
Display lights, but no sound
or picture
or picture
No sound from any speaker.
Light around power switch is red
Light around power switch is red
No sound from surround or
center speakers
center speakers
Unit does not respond to
remote commands
remote commands
Intermittent buzzing in tuner
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
• Input is monaural
• Incorrect configuration
• Weak batteries in remote.
• Remote is in
• Remote is in
Learn
position
• Remote sensor is obscured
• Local interference
SOLUTION
• Make certain AC power cord is plugged into
a live outlet.
• Check to see if 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
at receiver and speaker ends for shorts.
• Contact your local Harman Kardon service depot.
• Select a mode other than Stereo.
• There is no surround information from mono sources.
• Check speaker mode
• There is no surround information from mono sources.
• Check speaker mode
• Change remote batteries.
• Slide
• Slide
Use/Learn
switch to
Use
.
• Make certain front panel sensor is visible to remote.
• Move unit or antenna away from computers, fluorescent
lights, motors or other electrical appliances.
Troubleshooting Guide
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