Harman-Kardon Troubleshooting for Harman Kardon AVR 645: Find Solutions to Your Audio Problems
Page 63

Troubleshooting Guide

SYMPTOM

CAUSE

SOLUTION

 

 

 

 

Unit does not function when Main

• No AC Power

• Make certain AC power cord is plugged

Power Switch 1 is pushed

 

into a live outlet

 

 

 

• Check to see if outlet is switch controlled

 

 

 

Display lights, but no sound

• Intermittent input connections

• Make certain that all input and speaker

or picture

 

connections are secure

 

 

• Mute is on

• Press Mute button

K

 

• Volume control is down

• Turn up volume control

 

 

 

 

Units turns on, but Front-Panel

• Display brightness is turned off

• Follow the instructions in the Display Brightness section

Display does not light

 

on page 47 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

light around Power switch 2 is red

due to possible short

and speaker ends

 

 

• Amplifier is in protection mode

• Contact your local Harman Kardon service depot

 

due to internal problems

 

 

 

 

 

No sound from surround or

• Incorrect surround mode

• Select a mode other than Stereo

center speakers

• Input is mono

• There is no surround information from mono sources (except with

 

 

Theater and Hall surround modes)

 

• Incorrect configuration

• Check speaker mode configuration

 

• Stereo or Mono program material

• Some surround modes may not create 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 B

 

• Remote sensor ¯ is obscured

• 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

• Digital audio feed paused

• Resume play for DVD

 

Display Ú and Digital Audio stops

 

• Check that Digital Signal is fed to the Digital Input selected

 

 

 

 

ENGLISH

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’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 the Surround Mode 5 and the RDS ^ buttons simultaneously for three seconds.

The unit will turn on automatically and display the RESET message in the Main Infor- mation Display ˜. 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.

TROUBLESHOOTING GUIDE 63

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Contents AVR 645 Audio/ Video Receiver Declaration of Conformity Table of ContentsIntroduction Description and FeaturesIntroduction / Safety Information Important Safety InformationUnpacking Front Panel Controls To select between the Optical Coaxial ÓMore information Digital Audio Rear Panel ConnectionsSurround Left Blue Surround Right Gray Surround Back Left Surround Back Right Tan Subwoofer LFEMonitor Component Video Outputs AC Power Cord Jack Connect the ACDigital Audio Outputs Connect these Digital recorder such as a CD-R or MiniDisc recorderAVR 645 when appropriate upgrades are available + and negative terminalsRemote IR Carrier Output The output Light Button Main Remote Control FunctionsChannel Direct Inputs the input Disc Skip Button This button has no MoviesMain Remote Control Functions Zone II Remote Control Functions Power Off B AVR Selector The Bridge /DMP Selector Optional is connected to Digital Media Player DMP ConnectorOutput jacks Installation and ConnectionsAudio Equipment Connections Analog Video Equipment ConnectionsConnection Notes Hdmi ConnectionsHdmi Input Connections Video InputsImportant Note for Adapter Cables Hdmi Output ConnectionsScart A/V Connections To the Video 2 or Video 3 Video AudioImportant Note for the Use SCART-Cinch Adapters With Scart that cannot be switched and pro- vided by the AVRMultiroom IR Link System and Power ConnectionsMain Room Remote Control Extension BUS Installation ConnectionsUSB Connections Speaker PlacementAC Power Connections Speaker SelectionChannel system for your main listening area see To manually configure your surround back speakerFirst Turn On System ConfigurationUsing the On-Screen Display System SetupIn/Out Setup C O U T A L O G Audio Setup Video Monitor SettingsSurround Setup Button FQ Surround Config then press the SetNight Mode Settings Using EzSet/EQC K R F I E L D E Q So that on is highlighted and press the Set Button FManual Setup Speaker Size MenuSpeaker Size Small LFE Low-Pass-Filter SettingSubwoofer Size Sub Mode SettingDelay Settings Following options are availableOutput Level Adjustment Setup Volume until you can hear the test noise clearlyAdditional Input Adjustments Surround Mode Chart OperationChannel Channel presentation of two-channel stereo programs TheaterBasic Operation Source SelectionChannel/8-Channel Direct Input Surround Mode Selection Volume Up/Down ButtonsRepeatedly to scroll through the list of available modes Rear panel Or front panel *Ó Digital Audio PlaybackUntil Surr OFF appears in the Main Information Display ˜ Dolby DigitalDigital Bitstream Indicators Selecting a Digital SourceUSB Playback Speaker/Channel Indicators Audio, while the main feature is availableNight Mode Puts for Tape Outputs UsingTape Recording Front Panel In/OutputsEzSet/EQ On/Off Output Level Adjustment With Source SignalsMemory Backup Normal output level adjustment forDisplay Brightness Advanced FeaturesTurn On Volume Level Front-Panel-Display FadeSemi-OSD Settings Full-OSD Time Out AdjustmentDMP/ TheBridgeTMAuto Power Multiroom Operation Multiroom OperationFull Carrier IR Output Infrared Output SelectionMultiroom IR Input IR OutputTuner Operation Basic Tuner OperationRDS Operation Up/Down button # until RDS only appears in the display Program Search PTYButton F appears Configuring the RemotePreprogrammed Code Entry ForAutomatic Code Entry Learning CommandsLearning Codes for an Input Selector Device PriorityPress the ¤ Navigation Button E until Macro Programming Changing DevicesPower On VID 2/TV VID 3/Cable AVR Logic 7 O Erasing a MacroAt the next menu screen press Buttons Punch-Through ConfigurationVolume Punch-Through Returning the Volume Control Settings to Default OperationNavigation Buttons E until Returning the Channel Control Settings to Default OperationAt the next menu screen, press the ⁄¤ Transport Punch-Through‹ /› Navigation Buttons E as required RenamingResetting the Remote At this point you have two optionsSee page 54 for more information Backlight Options Additional Notes on Configuring and Operating the RemotePress the AVR Selector B Troubleshooting GuideProcessor Reset Power Switch 1 is pushedSystem Defaults Video Input DefaultsSystem Default and Personal Settings Worksheets Worksheet B Surround Configuration Defaults and Settings Worksheet C Delay Defaults and SettingWorksheet D System Defaults and Settings USB Worksheet E Input SettingsTechnical Specifications Harman Consumer Group, Inc

AVR 645 specifications

The Harman-Kardon AVR 645 is a standout receiver that appeals to audiophiles and home theater enthusiasts alike. This model is known for its rich sound quality, extensive features, and user-friendly interface, making it a solid choice for anyone looking to enhance their home entertainment experience.

At the heart of the AVR 645 is its robust amplification system. With a power output of 55 watts per channel at 8 ohms, the receiver provides ample power to drive a variety of speakers. The incorporation of Harman-Kardon's patented Logic 7 processing technology allows for an immersive surround sound experience, creating a sense of depth and realism in audio playback. This feature is particularly beneficial for film and gaming, as it helps to create a multidimensional soundstage that pulls viewers into the action.

The AVR 645 supports a variety of audio formats, including Dolby Digital, DTS, and Pro Logic II, ensuring compatibility with a wide range of media. The receiver is equipped with multiple audio inputs and outputs, including HDMI, optical, and coaxial connections, allowing users to easily connect their DVD players, gaming consoles, and other devices. Additionally, it features a built-in AM/FM tuner for those who enjoy traditional radio.

In terms of video capabilities, the AVR 645 is highly versatile, supporting both standard and high-definition video formats. The receiver includes multiple HDMI inputs, facilitating easy switching between different high-definition sources without compromising video quality. The ability to upconvert lower resolution video to near-HD quality further enhances the viewing experience, making it a great choice for those with diverse video content.

User-friendliness is another highlight of the AVR 645. The intuitive on-screen user interface makes it easy to navigate settings and setup configurations. The Zone II feature allows for audio playback in another room, expanding the potential for whole-home audio solutions.

Ultimately, with its blend of power, quality, and versatility, the Harman-Kardon AVR 645 remains a respected choice among home theater systems, ensuring an elevated audio and visual experience for all users.
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