Harman Kardon AVR 225 Owners Manual - Page 48

TROUBLESHOOTING GUIDE Your AVR 225 receiver has been designed to provide many years of trouble-free service. In the event that you are experiencing difficulties, please check the suggestions below for a possible solution to your problem. Additional information on the AVR 225, including updated information and user hints, is available from our Web site at www.harmankardon.com. SYMPTOM CAUSE SOLUTION Unit does not function when Main Power Switch is pushed • No AC Power • Make certain AC power cord is plugged into a live outlet • Check to see whether outlet is switch-controlled Display lights, but no sound or picture • Intermittent input connections • Mute is on • Volume control is down • Make certain that all input and speaker connections are secure • Press Mute button • Turn up volume control Unit turns on, but front-panel display does not light up • Display brightness is turned off • Follow the instructions in the Display Brightness section on page 30 so that the display is set to VFD FULL No sound from any speaker; light around power switch is red • Amplifier is in protection mode due to possible short • Amplifier is in protection mode due to internal problems • Check speaker wire connections for shorts at receiver and speaker ends • Contact your local Harman Kardon service center, which you can locate by visiting our Web site at www.harmankardon.com No sound from surround or center speakers • Incorrect surround mode • Input is monaural • Incorrect configuration • Stereo or Mono program material • Select a mode other than Stereo or Dolby 3 Stereo • There is no surround information from mono sources • Check speaker mode configuration • 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 • Wrong device selected • Remote sensor is obscured • Change remote batteries • Press the AVR selector • Make certain front-panel sensor is visible to remote or connect remote sensor Intermittent buzzing in tuner • Local interference • Move unit or antenna away from computers, fluorescent lights, motors or other electrical appliances Letters flash in the channel indicator display and digital audio stops • Digital audio feed paused • Resume play for DVD • Check that Digital Input is selected Processor Reset In the rare case in which the unit's operation or displays seem abnormal, the cause may involve the erratic operation of the system's memory or microprocessor. To correct this problem, first unplug the unit from the AC wall outlet and wait at least three minutes. After the pause, reconnect the AC power cord and check the unit's operation. If the system still malfunctions, a system "reset" may clear the problem. To clear the AVR 225's entire system memory including tuner presets, output level settings, delay times and speaker configuration data, first put the unit in Standby by pressing the System Power Control Button 2. Next, press and hold the Tone Mode Button 6 for three seconds. The unit will turn on automatically and display the RESET message in the Main Information Display S. Note that once you have cleared the memory in this manner, it is necessary to reestablish all system configuration settings and tuner presets. The reset will not affect settings that were programmed into the remote control. To reset the remote control and restore it to its factory default settings, please follow the instructions on page 34. If these steps do not solve the problem, consult an authorized Harman Kardon service center. You can locate the service center nearest to you by visiting our Web site at www.harmankardon.com. Memory Backup This product is equipped with a memory backup system that preserves the system configuration information and tuner presets if the unit is accidentally unplugged or subjected to a power outage. This memory will last for approximately one week, after which time all information must be reentered. 48 TROUBLESHOOTING GUIDE