Troubleshooting - Harman Kardon AVR 370 Service Manual

AVR
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; 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
(AVR 3700/AVR 370 only): Surround-back speaker
settings cannot be accessed, and the test tone does not
play through the surround back speakers
unable to activate remote control programming mode
remote buttons light, but Avr does not respond
unable to establish network connection
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
• 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
• Remote sensor is obscured
• Local interference
• Multi-zone operation has been selected/Assigned AMP
channels have been assigned to Zone 2
• Source Selector button is not held for at least 3
seconds
• Remote is in Zone 2 mode
• AVR network programming requires rebooting

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
• 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
programs
• Change batteries in remote
• 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
• Use the Speaker Setup menu to reassign the Assigned
Amp to the surround back left and right channels
• Be sure to hold the Source Selector button for at least
3 seconds
• Slide Zone Selector switch to the Zone 1 position.
• Cycle the AVR into the Standby mode, and then turn it
on again
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