Troubleshooting Guide - Harman Kardon AVR 3550HD Owner's Manual

SYMPTOM
Unit does not function when Main
Power Switch is turned on
Display lights, but no sound
or picture
No sound from any speaker;
PROTECT message appears on
front panel
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
Surround Back Speaker settings
cannot be accessed, and test tone
does not play through Surround
Back Speakers
The XM Preview Channel (001)
is silent
Unable to activate Program mode
on remote
Remote buttons light, but AVR does
not respond
Additional information on troubleshooting possible problems with your AVR 3550HD, 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.

TROUBLESHOOTING GUIDE

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
• Multizone system has been turned
on, and the surround back channels
were reassigned to multizone operation
• XM antenna is not plugged in
• XM antenna is not located in such
a way as to enable reception
• Source Selector not held for at least
3 seconds
• Remote is in Zone 2 mode
SOLUTION
• Make certain AC power cord is plugged into a live outlet
• Check whether outlet is switch-controlled
• Secure all input and speaker connections
• Press Mute Button
• Turn up volume control
• Check speaker wires 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 configuration
• The surround decoder may not create center- or rear-channel
information from nonencoded programs
• Change remote batteries
• Press the AVR Settings Button
• Make certain front-panel sensor is in line of sight of remote
or connect an optional remote sensor
• Move unit or antenna away from computers, fluorescent
lights, motors or other electrical appliances
• Resume play for DVD
• Check that the correct digital input is selected
• Use the menu system to access the Zone 2 menu and reassign
the surround back channels to the main room
• Use an XM antenna module designed for use with XM Ready home
audio equipment, and plug the module into the XM Radio Jack
• The XM antenna module needs an unobstructed view of the
southern sky, or to be within range of an XM terrestrial repeater;
if necessary, purchase an extension cable from your XM Radio
dealer
• The selector will light as you initially press it, and go dark as you
hold it down; wait 3 seconds for the selector to light again
• Slide the Zone Switch at the bottom of the remote to the
Zone 1 position
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