AVR 160 (serv.man5) - Harman Kardon Audio Service Manual (repair manual). Page 8

46

TROUBLESHOOTING GUIDE

If the unit behaves erratically after a power surge, first turn off the Main 
Power Switch and unplug the AC power cord for at least 3 minutes. Plug the 
cord back in and turn the receiver on. If this doesn’t help, reset the AVR.

NOTE: A system reset erases all user configurations, including video 
resolution, speaker and level settings, and tuner presets. After a reset, 
reenter all of these settings from your notes in the appendix worksheets.

To reset the AVR 160, place it in Standby mode (press the front-panel 
Standby/On Switch so that the Power Indicator turns amber). Then press the 
front-panel Surr. Mode Button until the RESET message appears.

If the receiver does not function correctly after a processor reset, contact an 
authorized Harman Kardon service center for assistance. Authorized service 
centers may be located by visiting the Web site at www.harmankardon.com.

If the AVR 160 is unplugged or experiences a power outage, it will retain user 
settings for up to two weeks.

Unit does not function when Main 
Power Switch is turned on

No AC Power

 

Make certain AC power cord is plugged into a live outlet

 

Check whether outlet is switch-controlled

 

Display lights, but no sound or 
picture

Intermittent input connections

 

Secure all input and speaker connections

 

Mute is on

 

Press Mute Button

 

Volume control is down

 

Turn up volume control

 

No sound from any speaker; 
PROTECT message appears on 
front panel

Amplifier is in protection mode due to 

 

possible short

Check speaker wires for shorts at receiver and speaker ends

 

Amplifier is in protection mode due to 

 

internal problems

Contact your local Harman Kardon service center

 

No sound from surround or center 
speakers

Incorrect surround mode

 

Select a mode other than Stereo

 

Input is monaural

 

There is no surround information from mono sources

 

Incorrect configuration

 

Check speaker configuration

 

Stereo or Mono program material

 

The surround decoder may not create center- or rear-channel 

 

information from nonencoded programs

Unit does not respond to remote 
commands

Weak batteries in remote

 

Change remote batteries

 

Wrong device selected

 

Press the AVR Settings Button

 

Remote sensor is obscured

 

Make certain front-panel sensor is in line of sight of remote or connect 

 

an optional remote sensor

Intermittent buzzing in tuner

Local interference

 

Move unit or antenna away from computers, fluorescent lights, 

 

motors or other electrical appliances

Additional information on troubleshooting possible problems with your AVR 160, or installation-related issues, may be found in the list 

of “Frequently Asked Questions”, which is located in the Product Support section at www.harmankardon.com.

harman/kardon

AVR 160/230 Service Manual

8 of 116