Troubleshooting - Harman Kardon AVR 70/230 Service Manual

AVR 700/AVR 70/AVR 70C

Troubleshooting

Symptom
unit does not function when main power switch is
turned on
front-panel message display lights, but there's no
sound or picture
no sound from any speaker
no sound from any speaker; protect message
appears on message display
no sound from center or surround speakers
unit does not respond to remote control commands
Intermittent buzzing in tuner
Additional information on troubleshooting possible problems with your AVr and 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: www.harmankardon.com
Cause
• No AC power
• Intermittent input connection
• Mute is on
• Volume control is turned down
• Speakers set to "Off" in System Setup menu
• Amplifier is in protection mode due to possible short
circuit
• Amplifier is in protection mode due to internal problems
• Incorrect surround mode
• Program material is monophonic
• Incorrect speaker configuration
• Program material is stereo
• Weak batteries in remote
• AVR not selected
• Remote sensor is obscured
• Local interference
Troubleshooting
Solution
• Ensure that the power cord is plugged into a live AC
power outlet
• Check if the AC outlet is switch-controlled
• Secure all input and speaker connections
• Press Mute button
• Turn up Volume control
• Set speakers to "On" in System Setup menu. See
Additional Setup Menu Items: Speaker On/Off, on
page 15, for more information.
• Check all speaker wires at speaker and AVR
connections for crossed wires
• Contact your local Harman Kardon service center
• Select a surround mode other than stereo
• Mono programs contain no surround information
• Check the speaker configuration in the setup menu
• The surround decoder may not create center- or
surround-channel information from nonencoded stereo
programs
• Change batteries in remote
• Press the Setup/AVR button
• Ensure that the AVR's front-panel remote sensor is in
the line of sight of the remote
• Move the AVR or antenna away from computers,
fluorescent lights, motors or other electrical appliances
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