Bedienungsanleitung Harman Kardon AVR7300 (Seite 56 von 60) (Englisch)

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56 TROUBLESHOOTING GUIDE

TROUBLESHOOTING GUIDE

SYMPTOM CAUSE SOLUTION

Unit does not function when Main • No AC Power • Make certain that the AC power cord is plugged into a live outlet

Power Switch is pushed • Check to see whether the outlet is switch-controlled

Display lights, but no sound • Intermittent input connections • Make certain that all input and speaker connections are secure

or picture • Mute is on • Press Mute Button

• Volume control is down • Turn up the volume control

Unit turns on, but front-panel • Display brightness is turned off • Follow the instructions in the Display Brightness section

display does not light up on page 42 so that the display is set to VFD FULL

No sound from any speaker; • Amplifier is in protection mode • Check speaker wire connections for shorts at receiver and

light around power switch is red due to possible short speaker ends

• Amplifier is in protection mode • Contact your local Harman Kardon service center

due to internal problems

No sound from surround or • Incorrect surround mode • Select a mode other than Stereo

center speakers • Input is monaural • There is no surround information from mono sources

• Incorrect configuration • Check speaker mode 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 • Weak batteries in remote • Change remote batteries

remote commands • Wrong device selected • Press the AVR selector

• Remote sensor is obscured • Make certain that the front-panel sensor is visible to the remote,

or connect remote sensor

Intermittent buzzing in tuner • Local interference • Move the unit or antenna away from computers, fluorescent

lights, motors or other electrical appliances

An UNLOCK message appears • The type of digital audio stream • Wait a second or two for the unit’s processor to recognize the new data

in the display and/or the letters has been changed stream and automatically resume playback

in the Channel Indicator display flash • Digital audio feed paused • Resume DVD playback.

at the same time as the audio stops

In addition to the items shown above, additional information on troubleshooting possible problems with your AVR 7300, or 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 at www.harmankardon.com.

Processor Reset

In the rare case where the unit’s operation or the dis-

plays 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 7300’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 Standby/On Button 1.

Next, press and hold the Surround Mode Group

Selector 2 and the Tuner Mode Selector 8

buttons for three seconds.

The unit will turn on automatically and display the

RESET message in the Upper Display Line $.

NOTE: Resetting the processor will erase any configu-

ration settings you have made for speakers, output

levels, surround modes, digital input assignments as

well as the tuner presets. After a reset the unit will be

returned to the factory presets, and all settings for

these items must be reentered.

If the system is still operating incorrectly, there may

have been an electronic discharge or severe AC line

interference that has corrupted the memory or

microprocessor.

If these steps do not solve the problem, consult an

authorized Harman Kardon service center.

AVR7300(120v)-OM 6/14/04 9:16 AM Page 56

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