Harman Kardon AVR 500 User Manual download pdf (Page 39)

38 TROUBLESHOOTING GUIDE

Troubleshooting Guide

SYMPTOM

Unit does not function when

Power Switch is pushed

Display lights, but no sound

or picture

Unit turns on, but Front-Panel

Display does not light up

No sound from any speaker;

Light around power switch is red

No sound from surround or

center speakers

Unit does not respond to

remote commands

Intermittent buzzing in tuner

CAUSE

• No AC Power

• Intermittent input connections

• Mute is on

• Volume control is down

• Display brightness is turned off.

• Amplifier is in protection mode

due to possible short

• Amplifier is in protection mode

due to internal problems

• Incorrect surround mode

• Input is monaural

• Incorrect configuration

• Stereo or Mono program material

• Weak batteries in remote

• Wrong device selected

• Remote sensor is obscured

• Local interference

SOLUTION

• Make certain AC power cord is plugged into

a live outlet

• Check to see if outlet is switch controlled

• Make certain that all input and speaker connections

are secure

• Press Mute button

• Turn up volume control

• Follow the instructions in the Display Brightness section

on page 20 so that the display is set to VFD FULL

• Check speaker-wire connections for shorts at receiver and

speaker ends

• Contact your local Harman Kardon service depot

• Select a mode other than Stereo

• There is no surround information from mono sources

• Check speaker mode

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

information from nonencoded programs

• Change remote batteries

• Press the AVR selector

• Make certain front-panel sensor is visible to remote

or connect remote sensor

• Move unit or antenna away from computers, fluorescent

lights, motors or other electrical appliances

Processor Reset

In the rare case where the unit’s operation or

the 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 500’s entire system memory

including tuner presets, output level settings,

delay times and speaker configuration data,

first turn the unit off by pressing and releasing

the Main Power Switch 1 so that it pops

out from its normal recessed position. Next,

press and hold the AM/FM $ and the Dolby

Pro Logic Ó buttons while pushing in the

Main Power Switch 1 to turn the unit back

on. Note that once you have cleared the memory

in this manner, it is necessary to re-establish all

system configuration settings and tuner presets.

NOTE: Resetting the processor will erase any

configuration 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 depot.

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Harman Kardon AVR 500 User Manual Page 39

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