AVR 171S - Harman Kardon Audio Service Manual (repair manual). Page 10

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English

AVR

Troubleshooting

unit does not function

• No AC power

• Ensure that the power cord is plugged into a live AC

power outlet

• Check if the AC outlet is switch-controlled

Front-panel display lights, but there’s no sound or picture

• Intermittent input connection
• Mute is on
• Volume control is turned down

• Secure all input and speaker connections
• Press Mute button
• Turn up Volume control

no sound from any speaker

• Amplifier is in protection mode due to possible short

circuit

• Amplifier is in protection mode due to internal

problems

• Check all speaker wires at speaker and AVR

connections for crossed wires

• Contact your local Harman Kardon service center

no sound from center or surround speakers

• Incorrect surround mode
• Program material is monophonic
• Incorrect speaker configuration
• Program material is stereo

• 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 

unit does not respond to remote control commands

• Weak batteries in remote
• Remote sensor is obscured

• Change batteries in remote
• Ensure that the AVR’s front-panel remote sensor is in

the line of sight of the remote

Intermittent buzzing in tuner

• Local interference

• Move the AVR or antenna away from computers,

fluorescent lights, motors or other electrical appliances

(AVR 1710/AVR 171 only): Surround-back speaker 

settings cannot be accessed, and the test tone does not 

play through the surround back speakers

• Multi-zone operation has been selected/Assigned AMP

channels have been assigned to zone 2

• Use the Speaker Setup menu to reassign the Assigned

AMp to the surround back left and right channels

unable to activate remote control programming mode

• Source Selector button is not held for at least 3

seconds

• Be sure to hold the Source Selector button for at least

3 seconds

remote buttons light, but AVr does not respond

• Remote is in Zone 2 mode

• Press Zone 2 button (button will not illuminate when

remote is in zone 1 control mode).

unable to establish network connection

• AVR network programming requires rebooting

• Cycle the AVR into the Off mode, and then turn it on

again

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

Harman Kardon

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