Troubleshooting Guide

SYMPTOM

CAUSE

SOLUTION

 

 

 

Unit does not function when Main

• No AC Power

• Make certain AC power cord is plugged

Power Switch 1is 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

 

• 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 34 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 2is 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 5

 

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 $and Digital Audio stops

 

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

 

 

 

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 includ- ing 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 8for three seconds.

The unit will turn on automatically. Note that once you have cleared the memory in this manner, it is necessary to re-establish all system configura- tion 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.

42TROUBLESHOOTING GUIDE

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Harman-Kardon AVR 235 Troubleshooting Guide, Processor Reset, Power Switch 1 is pushed, Remote sensor ¯ is obscured

AVR 235 specifications

The Harman-Kardon AVR 235 is a high-performance AV receiver that exemplifies the brand's commitment to delivering high-fidelity sound and cutting-edge technology. Designed for home theater enthusiasts, it combines a sleek aesthetic with powerful audio performance, making it an appealing choice for those looking to elevate their cinematic experience.

One of the standout features of the AVR 235 is its 7.1-channel surround sound capability, allowing for a truly immersive audio experience. It can deliver up to 70 watts per channel, ensuring that every sound, from the softest whisper to the loudest explosion, is reproduced with clarity and power. The receiver supports various surround sound formats, including Dolby Digital, Dolby Pro Logic II, and DTS, providing users with a versatile listening experience tailored to any content.

The AVR 235 integrates several advanced technologies to improve sound quality. This includes Harman-Kardon's proprietary "Logic 7" technology, which enhances stereo sources to provide a more expansive surround sound experience. Its advanced DSP (Digital Signal Processing) algorithms further optimize the audio signals, ensuring that the sound is not only powerful but also richly detailed and accurate.

Connectivity options abound with the AVR 235, facilitating a range of devices to be hooked up effortlessly. It features multiple HDMI inputs, component and composite video inputs, as well as analog and digital audio inputs. This extensive range of connections allows for seamless integration with Blu-ray players, gaming consoles, streaming devices, and more, making it a versatile hub for home entertainment.

The AVR 235 also places a strong emphasis on user-friendliness, boasting an intuitive on-screen display and a user-friendly remote control. The graphical user interface guides users through the setup process and offers various adjustments to accommodate different room acoustics and personal preferences.

Additionally, the AVR 235 supports multi-room audio configurations, enabling users to enjoy sound throughout the house. It features an integrated AM/FM tuner, allowing access to radio stations, and provides options for connecting to external audio sources.

In summary, the Harman-Kardon AVR 235 is a powerful and feature-rich AV receiver that delivers exceptional sound quality and versatility. Its advanced technologies, extensive connectivity options, and user-friendly design make it an excellent choice for anyone looking to enhance their home theater system and enjoy a superior audio experience. With the AVR 235, Harman-Kardon once again proves its prowess in the world of high-fidelity audio.