Harman Kardon AVR-225 Service manual

harman/kardon

AVR225

A/V DOLBY DIGITAL RECEIVER

SERVICE MANUAL

ESD WARNING………………………….…….2

LEAKAGE TESTING……………….....……....3

BASIC SPECIFICATIONS…………….….…..4 FRONT PANEL CONTROLS………………...5 FRONT PANEL DISPLAY…………………….7 REAR PANEL CONNECTIONS……..….……9 REMOTE CONTROL FUNCTIONS……..…..11

INSTALLATION AND CONNECTIONS….....14

TROUBLESHOOTING GUIDE…………..….16 MICROPROCESSOR RESET……….…..….16 UNIT EXPLODED VIEW………….…..……..17

harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev5 2/2005

CONTENTS

DISASSEMBLY PROCEDURE..………….18 AMPLIFIER BIAS ADJUSTMENT……...…21 BLOCK DIAGRAM………………………….22 IC PINOUTS……………………………..….23 TRANSISTOR PINOUTS………..…..…….59 ELECTRICAL PARTS LIST………..…..….60 PCB DRAWINGS……………………..……70 SCHEMATICS…………………………...…78 WIRING DIAGRAM..……………………….90 PACKAGING………………………………..91

AVR225

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called

Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and

semiconductor "chip" components.

The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on

your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device,

which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to

prevent electrostatic charge build-up or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

harman/kardon

4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges

sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical change sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement

ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material.)

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the

chassis or circuit assembly into which the device will be installed.

CAUTION :

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together

or your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES devices.

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

Each precaution in this manual should be followed during servicing.

Components identified with the IEC symbol in the parts list are special significance to safety. When replacing a component identified with

, use only the replacement parts designated, or parts with the same ratings or resistance, wattage, or voltage that are designated in the

parts list in this manual. Leakage-current or resistance measurements must be made to determine that exposed parts are acceptably

insulated from the supply circuit before retuming the product to the customer.

SAFETY PRECAUTIONS

The following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn the AC power switch on. Any current measured must not exceed o.5mA.

ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.

AVR225

Reading should not be above

0.5mA Device under test

Leakage current tester

harman/kardon

Test all exposed metal surfaces

Also test with plug reversed (Using AC adapter plug as required)

Earth ground

AC Leakage Test

Audio Section

Stereo Mode Continuous Average Power (FTC)

70 Watts per channel, @ < 0.07% THD, 20Hz – 20kHz, both channels driven into 8 ohms

Five-Channel Surround Modes Power Per Individual Channel

Front L&R channels: 60 Watts per channel @ < 0.07% THD, 20Hz–20kHz into 8 ohms

Center channel: 60 Watts @ < 0.07% THD, 20Hz–20kHz into 8 ohms

Surround channels: 60 Watts per channel @ < 0.07% THD, 20Hz–20kHz into 8 ohms

Input Sensitivity/Impedance

Linear (High-Level) 200mV/47k ohms Signal-to-Noise Ratio (IHF-A) 95dB Surround System Adjacent Channel Separation

Analog Source Decoding 45dB

Dolby Digital 55dB

DTS 55dB

Frequency Response

@ 1W (+0dB, –3dB) 10Hz–100kHz High Instantaneous

Current Capability (HCC) ±28 Amps Transient Intermodulation

Distortion (TIM) Unmeasurable Slew Rate 40V/µsec

FM Tuner Section

Frequency Range 87.5–108.0MHz Usable Sensitivity IHF 1.3 µV/13.2dBf Signal-to-Noise Ratio Mono/Stereo 70dB/68dB Distortion Mono/Stereo 0.2%/0.3% Stereo Separation 40dB @ 1kHz Selectivity ±400kHz, 70dB Image Rejection 80dB IF Rejection 90dB

AM Tuner Section

Frequency Range 520–1720 kHz Signal-to-Noise Ratio 45dB Usable Sensitivity Loop 500 µV Distortion 1kHz, 50% Mod 0.8% Selectivity ±10kHz, 30dB

Video Section

Television Format NTSC Input Level/Impedance 1Vp-p/75 ohms Output Level/Impedance 1Vp-p/75 ohms Video Frequency

Response 10Hz–8MHz (–3dB)

General

Power Requirement AC 120V/60Hz Power Consumption 68W idle, 540W maximum

(2 channels driven)

Dimensions (Max)

Width 17.3 inches (440mm) Height 6.6 inches (168mm) Depth 15.4 inches (390mm)

Weight 26.9 lb (12.2

kg)

Depth measurement includes knobs, buttons and terminal connections. Height measurement includes feet and chassis. All features and specifications are subject to change without notice.

*See the following trademark acknowledgements:

Harman Kardon and Power for the Digital Revolution are registered trademarks of Harman Kardon, Inc.

is a trademark of Harman International Industries, Inc. (patent no. 5,386,478).

Manufactured under license from Dolby Laboratories. "Dolby", ""Pro Logic" and the Double-D symbol are registered trademarks of Dolby Laboratories. Confidential Unpublished Works.

“DTS” and “DTS Digital Surround” are trademarks of Digital Theater Systems, Inc.

UltraStereo is a trademark of UltraStereo Corp.

VMAx is a registered trademark of Harman International Industries, Inc., and is an implementation of Cooper Bauck Transaural Stereo under patent license.

Logic 7 is a registered trademark of Lexicon, Inc., a Harman International Company, and Harman International Industries, Inc.

Crystal is a registered trademark of Cirrus Logic Corp.

SPECIFICATIONS

AVR225

harman/kardon

FRONT-PANEL CONTROLS 5

1 Main Power Switch: Press this button to apply power to the AVR 225.When the switch is pressed in, the unit is placed in a Standby mode, as indicated by the amber LED

3 surrounding the System

Power Control

2. This button MUST be pressed in to operate the unit. To turn the unit off and prevent the use of the remote control, this switch should be pressed until it pops out from the front panel so that the word “OFF” may be read at the top of the switch.

NOTE: This switch is normally left in the “ON” position.

2 System Power Control: When the Main Power Switch

is “ON,” press this button to turn on the AVR 225; press it again to turn the unit off. Note that the

Power Indicator3surrounding the switch will

turn green when the unit is on.

3 Power Indicator: This LED will be illuminated in amber when the unit is in the Standby mode to signal that the unit is ready to be turned on. When the unit is in operation, the indicator will turn green. Should the indicator turn red, turn the unit off using the Main Power Switch 1 and check the speaker wire connections to make certain that there are no short circuits.

4 Headphone Jack: This jack may be used to listen to the AVR 225’s output through a pair of headphones. Be certain that the headphones have a standard

/4" stereo phone plug. Note that the main room speakers will automatically be turned off when the headphone jack is in use.

5 Selector Buttons: When you are establishing the AVR 225’s configuration settings, use these buttons to

select from the choices available,

as shown in the Main

Information Display

Û.

6 Tone Mode: Pressing this button enables or dis-

ables the Bass and Treble tone controls. When the button is pressed so that the words

TONE IN

appear in the Main Information Display Û, the settings of the

Bass & and Treble ( controls may

be used to adjust the output signals.When the button is pressed so that the words

TONE OUT appear

in the

Main Information Display Û, the output sig-

nal will be “flat,” without any bass or treble alteration, no matter how the actual

Bass and Treble Controls

&( are adjusted.

7 Surround Mode Selector: Press this button to

change the surround mode by scrolling through the list of available modes. Note that depending on the type

FRONT-PANEL CONTROLS

1 Main Power Switch 2 System Power Control 3 Power Indicator 4 Headphone Jack 5 Selector Buttons 6 Tone Mode 7 Surround Mode Selector 8 Tuning Selector 9 AM/FM Selector ) Preset Stations Selector

! Input Source Selector @ Tuning Mode Selector # Digital Optical 3 Input $ Digital Coax 3 Jack % Video 4 Video Input Jacks ^ Video 4 Audio Input Jacks & Bass Control * Balance Control ( Treble Control Ó Volume Control

Ô Set Button  Input Indicators Ò Delay Ú Digital Input Selector Û Main Information Display Ù Channel Select Button ı Speaker Select Button ˆ Test Tone Selector ˜ Surround Mode Indicators ¯ Remote Sensor Window

)

* &

(

AVR 225

Tun Mode

AM/FM



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6 FRONT-PANEL CONTROLS

FRONT-PANEL CONTROLS

of input, some modes are not always available. (See page 25 for more information about surround modes.)

8 Tuning Selector: Press the left side of the button to tune lower-frequency stations and the right side of the button to tune higher-frequency stations.When a station with a strong signal is reached, the

Tuned

Indicator

Q will be illuminated in the Main

Information Display

Û.

In Manual tuning mode, tap the button lightly and note that the tuner will step up one frequency increment per button press.When the button is held for a few seconds you will note that the unit will quickly advance through the frequency band. Release it and the tuner will stop. In Auto tuning mode, each press of the button will search for the next station with an acceptable signal. Press and hold the button to skip through the acceptable stations.When the button is released, the tuner will not stop until it reaches a station with an acceptable frequency.

To switch back and forth between the Auto and Manual tuning modes, press the

Tuning Mode

Selector

9 AM/FM Selector: Pressing this button will auto-

matically switch the AVR 225 to the Tuner mode. Pressing it again will switch between the AM and FM frequency bands. (See page 28 for more information on the tuner.)

) Preset Stations Selector: Press this button to scroll up or down through the list of stations that have been entered into the preset memory. (See page 28 for more information on tuner presets.)

! Input Source Selector: Press this button to change the input by scrolling up or down through the list of input sources.

@ Tuning Mode Selector: Press this button to select Auto or Manual tuning. When the button is pressed so that the

Auto Indicator R lights, the tuner will search

for the next station with an acceptable signal when the Tuning Selector 8u is pressed. When the button is pressed so that the

Auto Indicator R is not lit,

each press of the

Tuning Selector 8u will

increase the frequency.This button may also be used to switch between Stereo and Mono modes for FM radio reception. When weak reception is encountered, press the button until the

Stereo Indicator P goes out to

switch to Mono reception. Press and hold again to switch back to Stereo mode. (See page 28 for more information on using the tuner.)

# Digital Optical 3 Input: Connect the optical digital audio output of an audio or video product to this jack. When the input is not in use, be certain to keep the

plastic cap installed to avoid dust contamination that might degrade future performance.

$ Digital Coax 3 Jack: This jack is used for con- nection to the output of portable audio devices, video game consoles or other products that have a coax digital audio jack.

% Video 4 Video Input Jacks: These jacks may be used for temporary connection to the composite or S-Video output of video games, camcorders or other portable video products.

^ Video 4 Audio Input Jacks: These audio jacks may be used for temporary connection to video games or portable audio/video products such as camcorders and portable audio players.

& Bass Control: Turn this control to modify the lowfrequency output of the left/right channels by as much as ±10dB, when the unit is in the “Surround Off” mode. Set this control to a suitable position for your taste or room acoustics.

* Balance Control: Turn this control to change the relative volume for the front left/right channels.

NOTE: For proper operation of the surround modes this control should be at the midpoint or “12 o’clock” position.

( Treble Control:Tu rn this control to modify the high- frequency output of the left/right channels by as much as ±10dB, when the unit is in the “Surround Off” mode. Set this control to a suitable position for your taste or room acoustics.

Ó Volume Control: Tu rn this knob clockwise to increase the volume, counterclockwise to decrease the volume. If the AVR 225 is muted, adjusting the Volume Control Ó will automatically release the unit from the silenced condition.

Ô Set Button: When making choices during the setup and configuration process, press this button to enter the desired setting as shown in the

Main Infor-

mation Display

Û into the AVR 225’s memory. The Set button may also be used to change the display brightness (see page 30).

 Input Indicators: A green LED will light in front of the input that is currently being used as the source for the AVR 225.

Ò Delay: Press this button to begin the sequence of steps required to enter delay time settings. (See page 18 for more information on delay times.)

Ú Digital Input Selector: When playing a source that has a digital output, press this button to select

between the

Optical #e and Coaxial $b

digital inputs or to select the source’s analog input. (See pages 26–28 for more information on digital audio.)

Û Main Information Display: This display delivers messages and status indications to help you operate the receiver. (See pages 7–8 for a complete explanation of the Information Display.)

Ù Channel Select Button: Press this button to begin the process of trimming the channel output levels using an external audio source. (For more information on output level trim adjustment, see page 29.)

ı Speaker Select Button: Press this button to begin the process of configuring the unit to match the type of speakers used in your listening room. (See pages 19–21 for more information on speaker setup and configuration.)

ˆ Test Tone Selector: Press this button to begin the process of adjusting the channel output levels using the internal test tone as a reference. (For more information on output level adjustment, see page 21.)

˜ Surround Mode Indicators: A green LED will light in front of the surround mode that is currently in use.

¯ Remote Sensor Window: The sensor behind this window receives infrared signals from the remote control. Aim the remote at this area and do not block or cover it.

AVR225

harman/kardon

FRONT-PANEL INFORMATION DISPLAY 7

FRONT-PANEL INFORMATION DISPLAY

MEM PRESET

SLEEP

AUTOANALOGCOAX 123OPT 123DTS

PCM

TUNED ST

D PL II 3ST OSD DSP VMAx NF LOGIC 7 CM

KHz

MHz

NIGHT

SL SR

LFE

S RTUV Q PO M L

C D E F G H I J

A Bitstream Indicators B DTS Mode Indicator C Dolby Digital Indicator D Dolby Pro Logic II Indicator E Dolby 3 Stereo/Stereo Indicator F OSD Indicator G DSP Mode Indicator H VMAx Mode Indicators

I Logic 7 Mode Indicators J Preset Number/Sleep Timer K Night Mode Indicator L Speaker/Channel Input Indicators M Preset Indicator N Sleep Indicator O Memory Indicator P Stereo Indicator

Q Tuned Indicator R Auto Indicator S Main Information Display T Analog Input Indicator U Coaxial Digital Input Indicators V Optical Digital Input Indicators

A Bitstream Indicators: When the input is a digital

source, one of these indicators will light to display the specific type of data signal in use.

B DTS Mode Indicator: This indicator lights when a DTS-encoded source is playing and DTS Surround decoding is in use.

C Dolby Digital Indicator: This indicator lights when a Dolby Digital source is being played and Dolby Digital surround decoding is in use.

D Dolby Pro Logic II Indicator: This indicator lights when the Dolby Pro Logic II mode has been selected.

• It is possible to see the Dolby Pro Logic II indicator

lit simultaneously with the Dolby Digital indicator, even though the Dolby Digital surround mode has been selected. This is due to the specifications for Dolby Digital pro

cessing, which require that the Dolby

Pro Logic II

mode be used any time a two-channel

Dolby signal is detected.

• If you desire 5.1-channel audio, check the audio settings in the menus for both your DVD player and your DVD disc to make sure that a 5.1-channel Dolby Digital soundtrack is available and has been selected.

E Dolby 3 Stereo/Stereo Indicator: The entire indicator lights when the Dolby 3 Stereo mode has been selected. When the surround modes are turned off so that two-channel stereo playback is in use, only the “ST” indicator will light.

F OSD Indicator: When the On Screen Display (OSD) system is in use, this indicator lights to remind you that the other indicators in this display do not function when the OSD is being used.

G DSP Mode Indicator: This indicator lights when any of the surround modes created by Digital Signal Processing, or DSP, are in use. These modes include Hall 1, Hall 2, the Theater Mode and 5-Channel Stereo.

H VMAx Mode Indicators: These

light when the

VMAx mode is in use.

VMAx F

appears when the

Far Field VMAx mode is selected;

VMAx N appears when the Near Field VMAx mode is selected. (See page 25 for a description of the VMAx modes.)

I Logic 7 Mode Indicators: These indicators light when the Logic 7 mode is in use.

LOGIC 7C

appears for the Cinema version; LOGIC 7M appears for the Music version of Logic 7. (See page 25 for a description of the Logic 7 modes.)

J Preset Number/Sleep Timer: When the tuner is in use, these numbers indicate the specific preset memory location in use. (See page 28 for more information on preset stations.) When the Sleep function is in use, these numbers show how many minutes remain before the unit goes into the Standby mode. (See page 24 for information on the Sleep function.)

K Night Mode Indicator: This lights when the AVR 225 is in the Night mode, which preserves the dynamic range of digital program material at low volume levels.This mode is only available with specially encoded Dolby Digital sources. (See page 27 for a description of the Night mode.)

L Speaker/Channel Input Indicators: These indica- tors are multipurpose, indicating either the speaker type selected for each channel or the incoming data-signal configuration. The left, center, right, right surround and left surround speaker indicators are composed of three boxes, while the subwoofer is a single box. The center box lights when a “Small” speaker is selected, and the two outer boxes light when “Large” speakers are selected. When none of the boxes are lit for the center, surround or subwoofer channels, no speaker has been assigned to one of those positions. (See page 19 for more information on configuring speakers.) The letters inside each of the center boxes display active input channels. For standard analog inputs, only the L and R will light, indicating a stereo input. When a digital source is playing, the indicators will light to display the channels being received at the digital input. When the letters flash, the digital input has been interrupted. (See page 27 for more information on the Channel Indicators.)

M Preset Indicator: This indicator lights when the tuner is in use to show that the

Preset Number/

Sleep Timer

J is showing the station’s preset memory number. (See page 28 for more information on tuner presets.)

AVR225

harman/kardon

8FRONT-PANEL INFORMATION DISPLAY

FRONT-PANEL INFORMATION DISPLAY

N Sleep Indicator: This indicator lights when the Sleep function is in use.The numbers in the

Preset

Number/Sleep Timer

J will show the minutes remaining before the AVR 225 goes into the Standby mode. (See page 24 for more information on the Sleep function.)

Memory Indicator: This indicator flashes when

entering presets and other information into the tuner’s memory.

P Stereo Indicator: This indicator lights when an FM station is being tuned in stereo.This indicator differs from the indicator that lights when the surround decoding modes are turned off, which is described above as the

Dolby 3 Stereo/Stereo Indicator E.

Tuned Indicator:

This indicator lights when a station is being received with sufficient signal strength to provide acceptable listening quality.

R Auto Indicator: This indicator lights when the tuner’s Auto mode is in use.

S Main Information Display: This display shows messages relating to the status, input source, surround mode, tuner, volume level or other aspects of the AVR 225’s operation.

T Analog Input Indicator: This indicator lights when an analog input source has been selected.

U Coaxial Digital Input Indicators: These indicators light to show when a coaxial digital audio input has been selected.

V Optical Digital Input Indicators: These indicators light to show when an optical digital audio input has been selected.

NOTE: See page 26 for information on assigning either an analog input or one of the digital audio inputs to the source currently in use.

AVR225

harman/kardon

REAR-PANEL CONNECTIONS 9

REAR-PANEL CONNECTIONS

‚¤‹ ﬁ

•

ª ⁄

›

ﬂ

‡

™

¢ ∞

§ ¶

SURR SURR

, 0.5A

, 1A

¡ AM Antenna ™ FM Antenna £ CD Inputs ¢ Tape Outputs ∞ Tape Inputs

§ Remote IR Input ¶ Remote IR Output

• Subwoofer Output ª Front Right Speaker Outputs ‚ Surround Right Speaker Outputs ⁄ Center Speaker Outputs ¤ Surround Left Speaker Outputs ‹ Front Left Speaker Outputs › Switched AC Accessory Outlet ﬁ Unswitched AC Accessory Outlet

ﬂ AC Power Cord ‡ Optical Digital Audio Output ° Coaxial Digital Audio Output

· Video Monitor S-Video Output a DVD S-Video Input b Coaxial Digital Audio Inputs c Video 1 S-Video Input d Video 1 S-Video Output e Optical Digital Audio Inputs f Video 2 S-Video Input g Video 2 S-Video Output h Video 3 S-Video Input i 6-Channel Direct Inputs j Video Monitor Composite Video Output k DVD Composite Video Input

DVD Audio Inputs Video 1 Composite Video Input Video 1 Audio Inputs Video 1 Composite Video Output Video 1 Audio Outputs Video 2 Composite Video Input Video 2 Audio Inputs Video 2 Composite Video Output Video 2 Audio Outputs Video 3 Composite Video Input Video 3 Audio Inputs

¡ AM Antenna: Connect the AM loop antenna sup- plied with the receiver to these terminals. If an external AM antenna is used, make connections to the

AM and

GND terminals in accordance with the instructions

supplied with the antenna.

™ FM Antenna: Connect the supplied indoor (or an optional external) FM antenna to this terminal.

£ CD Inputs: Connect these jacks to the output of a compact disc player or CD changer.

¢ Ta pe Outputs: Connect these jacks to the RECORD/INPUT jacks of an audio recorder.

∞ Tape Inputs: Connect these jacks to the PLAY/OUT jacks of an audio recorder.

§ Remote IR Input: If the AVR 225’s front-panel IR sensor is blocked due to cabinet doors or other obstructions, an external IR sensor may be used. Connect the output of the sensor to this jack.

¶ Remote IR Output: This connection permits the IR sensor in the receiver to serve other remotecontrolled devices. Connect this jack to the “IR IN” jack on Harman Kardon (or other compatible) equipment.

• Subwoofer Output: Connect this jack to the line- level input of a powered subwoofer. If an external sub-

woofer amplifier is used, connect this jack to the subwoofer amplifier input.

ª⁄‹ Front Speaker Outputs: Connect these outputs to the matching + or – terminals on your front speakers.When making speaker connections, always make certain to maintain correct polarity by connecting the black terminal to the negative (–) terminal on the speakers. Connect the white terminal to the positive (+) terminal on the left front speaker, the red terminal to the positive (+) terminal on the right front speaker and the green terminal to the positive (+) terminal on the center front speaker. Newer speakers may have matching color terminals in accordance with the new

AVR225

harman/kardon

31 32 33

35 36 37 38 39 40 41

10 REAR-PANEL CONNECTIONS

REAR-PANEL CONNECTIONS

CEA specifications, while existing speakers typically use a red terminal for the positive (+) speaker wire connection. (See page 14 for more information on speaker polarity.)

‚¤ Surround Speaker Outputs: Connect these outputs to the matching + or – terminals on your left and right surround speakers.When making speaker connections always make certain to maintain correct polarity by connecting the black terminal to the negative (–) terminal on the speakers. Connect the blue terminal to the positive (+) terminal on the left surround speaker and the gray terminal to the positive (+) terminal on the right surround speaker. Newer speakers may have matching color terminals in accordance with the new CEA specifications, while existing speakers typically use a red terminal for the positive (+) speaker wire connection. (See page 14 for more information on speaker polarity.)

› Switched AC Accessory Outlet: This outlet may be used to power any device you wish to have turned on or off at the same time as the AVR 225. Any device connected to this outlet will be off when the AVR 225 is in the Standby mode, and power will be supplied to the outlet when the AVR 225 is turned on.

ﬁ Unswitched AC Accessory Outlet: This outlet may be used to power any AC device. The power will remain on at this outlet regardless of whether the AVR 225 is on or off.

NOTE: The total power consumption of all devices connected to the accessory outlets should not exceed 100 watts. Do not connect power amplifiers or other high-current draw devices to these outlets.

ﬂ AC Power Cord: Connect the AC plug to an unswitched AC wall outlet.

‡ Optical Digital Audio Output: Connect this jack to the matching digital audio input connector on a digital recorder such as a CD-R or MiniDisc recorder.

° Coaxial Digital Audio Output: Connect this jack to the matching digital audio input connector on a digital recorder such as a CD-R or MiniDisc recorder.

·j Video Monitor Outputs: Connect these jacks to the composite or S-Video input of a TV monitor or video projector to view the on-screen menus and the output of any standard video source selected by the receiver’s video switcher.

ak DVD Video Inputs: Connect one of these jacks to the composite or S-Video output jacks on a DVD or other video source.

b Coaxial Digital Audio Inputs: Connect the coax digital audio output from a DVD player, HDTV receiver, LD player, satellite receiver, cable box, MiniDisc recorder or CD player to these jacks.The signal may be either a Dolby Digital signal, DTS signal or a standard PCM digital source. Do not connect the RF digital output of an LD player to these jacks.

c Video 1 Video Inputs: Connect one of these jacks to the

PLAY/OUT composite or S-Video jacks

on a VCR or other video source.

d Video 1 Video Outputs: Connect one of these jacks to the

RECORD/INPUT composite or

S-Video jack on a VCR.

e Optical Digital Audio Inputs: Connect the optical digital audio output from a DVD player, HDTV receiver, LD player, satellite receiver, cable box, MiniDisc player or recorder, or CD player to these jacks. The signal may be either a Dolby Digital signal, a DTS signal or a standard PCM digital source.

f Video 2 Video Inputs: Connect one of these jacks to the

PLAY/OUT composite or S-Video jacks

on a TV,VCR or other video source.

g Video 2 Video Outputs: Connect one of these jacks to the

RECORD/INPUT composite or

S-Video jacks on a VCR, if you are connecting a VCR to the Video 2 inputs.

h Video 3 Video Inputs: Connect one of these jacks to the

PLAY/OUT composite or S-Video jacks

on a cable television box, satellite dish receiver, VCR or other video source.

i 6-Channel Direct Inputs: If an external digital audio decoder is used, connect the outputs of that decoder to these jacks.

These jacks have been color-coded as follows to assist you in making correct channel connections:

Front Left White Front Right Red Center Green Surround Left Blue Surround Right Gray Subwoofer Purple

DVD Audio Inputs: Connect these jacks to the

analog audio jacks on a DVD or other source device.

NOTE: The default setting for the audio input associated with DVD is the Coaxial Digital Input 1 b. If you connect the audio outputs of a DVD player to these jacks

, change the input setting as shown on page 17.

Video 1 Audio Inputs: Connect these jacks to

the

PLAY/OUT audio jacks on a VCR or other video

source.

Video 1 Audio Outputs: Connect these jacks to

the

RECORD/INPUT audio jacks on a VCR.

Video 2 Audio Inputs: Connect these jacks to

the

PLAY/OUT audio jacks on a VCR or other video

source, if you have connected a VCR to the Video 2 input.

Video 2 Audio Outputs: Connect these jacks to

the

RECORD/INPUT audio jacks on a VCR or other

video source, if you have connected a VCR to the Video 2 input.

Video 3 Audio Inputs: Connect these jacks to

the

PLAY/OUT audio jacks on a cable television box,

satellite dish receiver, VCR or other video source.

AVR225

harman/kardon

REMOTE CONTROL FUNCTIONS 11

●

REMOTE CONTROL FUNCTIONS

a Power Off Button b IR Transmitter Window c Program/SPL Indicator d Power On Button e Input Selectors f AVR Selector g AM/FM Tuner Select h Test Button i Sleep Button j Surround Mode Selector k Night Mode l Channel Select Button m

⁄

Button

‹

Button

o Set Button p Digital Select q

Button

r Numeric Keys s Tuner Mode t Direct Button u Tuning Up/Down v OSD Button w Macro Buttons x Transport Controls y Skip Up/Down Buttons z Disc Skip Button ` Preset Up/Down

Clear Button

Memory Button

Delay/Prev. Ch.

›

Button

Speaker Select

Spare Button

Volume Up/Down

TV/Video Selector

SPL Button

6-Channel Direct Input

Mute

EzSet Sensor Microphone

NOTE: The function names shown here are each button’s feature when used with the AVR 225. Most buttons have additional functions when used with other devices. See pages 36–37 for a list of these functions.

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12 REMOTE CONTROL FUNCTIONS

REMOTE CONTROL FUNCTIONS

IMPORTANT NOTE: The AVR 225’s remote may be programmed to control up to eight devices, including the AVR 225. Before using the remote, it is important to remember to press the Input Selector Button e that corresponds to the unit you wish to operate. In addition, the AVR 225’s remote is shipped from the factory to operate the AVR 225 and most Harman Kardon CD or DVD players and cassette decks.The remote is also capable of operating a wide variety of other products using the control codes that are part of the remote. Before using the remote with other products, follow the instructions on page 32 to program the proper codes for the products in your system.

It is also important to remember that many of the buttons on the remote take on different functions, depending on the product selected using the device control selectors.The descriptions shown here primarily detail the functions of the remote when it is used to operate the AVR 225. (See pages 36–37 for information about alternate functions for the remote’s buttons.)

a Power Off Button: Pressing this button turns off (places in the Standby mode) the device that was last selected by pressing one of the Input Selectors e. To place the AVR 225 in the Standby mode, first press the AVR Selector Button f and then press this button.

b IR Transmitter Window: Point this window toward the AVR 225 when pressing buttons on the remote to make certain that infrared commands are properly received.

c Program/SPL Indicator: This three-color indica- tor is used to guide you through the process of programming the remote and it is also used as a level indicator when using the remote’s EzSet capabilities. (See page 21 for more information on setting output levels, and see page 32 for information on programming the remote.)

d Power On Button: Press this button to turn on power to the device that was last selected by pressing one of the Input Selectors e.To turn on the AVR 225, press the AVR Selector Button f.

e Input Selectors: Pressing one of these buttons will perform three actions at the same time. First, if the AVR 225 is not turned on, this will power up the unit. Next, it will select the source shown on the button as the input to the AVR 225. Finally, it will change the remote control so that it controls the device selected. After pressing one of these buttons you must press the AVR Selector Button f again to operate the AVR 225’s functions with the remote.

f AVR Selector: Pressing this button will switch the remote so that it will operate the AVR 225’s functions. If the AVR 225 is in the Standby mode, it will also turn the AVR 225 on.

g AM/FM Tuner Select: Press this button to select the AVR 225’s tuner as the listening choice. Pressing this button when the tuner is already in use will switch between the AM and FM bands.

h Test Button: Press this button to begin the sequence used to manually calibrate the AVR 225’s output levels.To begin automatic calibration using the EzSet feature, press the SPL Button instead of this button. (See page 21 for more information on calibrating the AVR 225.)

i Sleep Button: Press this button to place the unit in the Sleep mode.After the time shown in the display, the AVR 225 will automatically go into the Standby mode. Each press of the button changes the time until turn-off in the following order:

This button is also used to change channels on your TV when the TV is selected, and to end the process of creating a macro command. (See page 33 for more information on creating macros.)

j Surround Mode Selector: Press this button to begin the process of changing the surround mode. After the button has been pressed, use the

⁄/¤

Buttons mq to select the desired surround mode. (See page 25 for more information.) Note that this button is also used to tune channels when the TV is selected and during the process of erasing stored macro commands. (See page 33 for more information on macros.)

NOTE: The Sleep Button i and Surround Mode Selector j may also function as the Channel +

and – keys when the remote is programmed for use with TVs, cable boxes, VCRs, satellite receivers or other video devices with tuners. See page 34 for information on programming the remote for Channel Control Punch-Through capability so that you may change channels on a separate device when the remote is in AVR mode.

k Night Mode: Press this button to activate the Night mode.This mode is available in specially encoded digital sources, and it preserves dialogue (center channel) intelligibility at low volume levels.

l Channel Select Button: This button is used to start the process of setting the AVR 225’s output levels to an external source. Once this button is pressed, use the

⁄/¤

Buttons mq to select the channel being

adjusted, then press the Set Button o,followed by the

⁄/¤

Buttons mq again, to change the level

setting. (See page 29 for more information.)

⁄

Button: This multipurpose button is used to

change or scroll through items in the on-screen menus, or to change configuration settings such as output levels.When changing an item such as the surround mode or digital input directly, first press the function or mode to be changed (e.g., press the Surround Mode

Selector j to select a surround mode or the Digital Select Button p to change the digital input) and

then press this button to scroll through the list of available choices.

‹

Button: This button is used to change the

menu selection or setting during some of the setup procedures for the AVR 225.

o Set Button: This button is used to enter settings into the AVR 225’s memory. It is also used in the setup procedures for delay time, speaker configuration and channel output level adjustment.

p Digital Select: Press this button to assign one of the digital inputs be#$ to a source. (See page 26 for more information on using digital inputs.)

Button: This multipurpose button is used to

Selector j to select a surround mode or the Digital Select Button p to change the digital input) and

then press this button to scroll through the list of available choices.

r Numeric Keys: These buttons serve as a 10- button numeric keypad to enter tuner preset positions. They are also used to select channel numbers when TV has been selected on the remote, or to select track numbers on a CD, DVD or LD player, depending on how the remote has been programmed.

s Tuner Mode: Press this button when the tuner is in use to select between automatic tuning and manual tuning. In automatic tuning mode, the Auto Indicator R will be lit, and only stations with acceptable signal quality may be tuned by pressing the Tuning Up/ Down Buttons 8u. When the button is pressed so that the Auto Indicator R goes out, manual tuning mode is engaged, and pressing the Tuning Buttons 8u will move the frequency up or down in single-step increments.When the FM band is in use, pressing this button when a station’s signal is

min80min70min60min50min

min

min20min10min

OFF

AVR225

harman/kardon

REMOTE CONTROL FUNCTIONS 13

weak will change to monaural reception. (See page 28 for more information.)

t Direct Button: When the tuner is in use, press this button to start the sequence for direct entry of a station’s frequency. After pressing the button simply press the proper Numeric Keys r to select a station. (See page 28 for more information on the tuner.)

u Tuning Up/Down: When the tuner is in use, these buttons will tune up or down through the selected frequency band. If the Tuner Mode Button s@ has been pressed so that the Auto Indicator R is illuminated, pressing either of the buttons will cause the tuner to seek the next station with acceptable signal strength for quality reception. When the Auto Indicator R is NOT illuminated, pressing these buttons will tune stations in single-step increments. (See page 28 for more information.)

v OSD Button: Press this button to activate the On Screen Display (OSD) system used to set up or adjust the AVR 225’s parameters.

w Macro Buttons: Press these buttons to store or recall a “Macro”, which is a preprogrammed sequence of commands stored in the remote. (See page 33 for more information on storing and recalling macros.)

x Transport Controls: These buttons do not have any functions with the AVR 225 but they may be programmed for the forward/reverse play operation of a wide variety of CD or DVD players, and audio or video cassette recorders. (See page 34 for more information on programming the Transport Control Punch-Through capability of the remote.)

y Skip Up/Down Buttons: These buttons have no direct function with the AVR 225, but when used with a compatibly programmed CD or DVD changer they will change the track or chapter of the disc currently being played in the changer.

z Disc Skip Button: This button has no direct function for the AVR 225, but when used with a compatibly programmed CD or DVD changer, it will change the disc currently being played in the changer. (See page 33 for more information on using the remote with other devices.)

` Preset Up/Down: When the tuner is in use, press these buttons to scroll through the stations programmed into the AVR 225’s memory.When some source devices, such as CD players,VCRs and cassette decks, are selected using the device Input Selectors e, these buttons may function as Chapter Step or Track Advance.

Clear Button: Press this button to clear incorrect

entries when using the remote to directly enter a radio station’s frequency.

Memory Button: Press this button to enter a

radio station into the AVR 225’s preset memory. Once the Memory Indicator O flashes, you have five seconds to enter a preset memory location using the Numeric Keys r. (See page 28 for more information.)

Delay/Prev Ch.: Press this button to begin

the process for setting the delay times used by the AVR 225 when processing surround sound. After pressing this button, the delay times are entered by pressing the Set Button o and then using the

⁄/¤

Buttons mq to change the setting. Press

the Set Button o again to complete the process. (See page 18 for more information.)

›

Button: Press this button to change a setting

or selection when configuring many of the AVR 225’s settings.

Speaker Select: Press this button to begin the

process of configuring the AVR 225’s bass management system for use with the type of speakers used in your system. Once the button has been pressed, use the

⁄/¤

Buttons mq to select the chan-

nel you wish to set up. Press the Set Button o and then select another channel to configure. When all adjustments have been completed, press the Set Button o twice to exit the settings and return to normal operation. (See page 20 for more information.)

Spare Button: This button does not have any

function for the operation of the AVR 225, but it is available for use when programmed with the code from another remote. (See page 32 for information on programming the remote with codes for other devices.)

Volume Up/Down: Press these buttons to raise

or lower the system volume. See page 34 for more information on programming the Volume PunchThrough capability of the remote, which allows you to change the AVR 225’s volume while the remote is set to control another device.

TV/Video Selector: This button does not have a

direct function on the AVR 225, but when used with a compatibly programmed VCR, DVD or satellite receiver that has a “TV/Video” function, pressing this button will switch between the output of the player or receiver and the external video input to that player. Consult the owner’s manual for your specific player or receiver for the details of how it implements this function.

SPL Button: This button activates the AVR 225’s

EzSet function to quickly and accurately calibrate the AVR 225’s output levels. Press and hold the button for three seconds and then release it. The Test Tone will begin circulating, and the Program/SPL Indicator c will change colors. During this sequence, EzSet will automatically adjust the output levels for all channels until they have equal output levels, as shown by the Program/SPL Indicator c lighting green for each channel. (See page 21 for more information on EzSet.)

6-Channel Direct Input: Press this button to

select the component connected to the 6-Channel

Direct Inputs i as the source.

Mute: Press this button to momentarily silence

the AVR 225 or TV set being controlled, depending on which device has been selected. When the AVR 225 is muted, press this button or use the Volume Control Ó to return to the previous volume level.

When the AVR 225 remote is being programmed to operate another device, or when a macro command is being programmed, this button is pressed with the Input Selector Button e to begin the programming process. (See page 33 for more information.)

Ez Set Sensor Microphone: The sensor micro-

phone for the EzSet microphone is behind these slots. When using the remote to calibrate speaker output levels using EzSet, be sure that you do not hold the remote in a way that covers these slots. (See page 21 for more information on using EzSet.)

REMOTE CONTROL FUNCTIONS

AVR225

harman/kardon

14 INSTALLATION AND CONNECTIONS

System Installation

After unpacking the unit, and placing it on a solid surface capable of supporting its weight, you will need to make the connections to your audio and video equipment.

Audio Equipment Connections

We recommend that you use high-quality interconnect cables when making connections to source equipment and recorders to preserve the integrity of the signals.

When making connections to audio source equipment or speakers it is always a good practice to unplug the unit from the AC wall outlet. This prevents any possibility of accidentally sending audio or transient signals to the speakers that may damage them.

1. Connect the analog output of a CD player to the

CD Inputs £.

NOTE: When the CD player has both fixed and vari-

able audio outputs it is best to use the fixed output unless you find that the input to the receiver is so low that the sound is noisy, or so high that the signal is distorted.

2. Connect the analog Play/Out jacks of a cassette deck, MD, CD-R or other audio recorder to the Tap e Input Jacks ∞. Connect the analog Record/In jacks on the recorder to the Tape Output Jacks ¢ on the AVR 225.

3. Connect the output of any digital sources to the appropriate input connections on the AVR 225 rear panel. The Optical and Coaxial Digital Inputs

#$ may be used with a Dolby Digital or

DTS source such as a DVD player, or the output of a conventional CD or LD player’s PCM (S/P-DIF) output.

4. Connect the Optical Digital Audio Output ‡ or the Coaxial Digital Audio Output ° on the rear panel of the AVR 225 to the matching digital input connections on a CD-R or MiniDisc recorder.

5. Assemble the AM Loop Antenna supplied with the unit as shown below. Connect it to the AM and GND Screw Terminals ¡.

6. Connect the supplied FM antenna to the FM Antenna (75-Ohm) Connection ™. The FM anten- na may be an external roof antenna, an inside powered or wire lead antenna or a connection from a

cable TV system. Note that if the antenna or connection uses 300-ohm twin-lead cable, you must use the 300-ohm-to-75-ohm adapter supplied with the unit to make the connection.

7. If you have a DVD-Audio or SACD player, or other component that includes an onboard surround decoder and 6-channel line-level audio outputs, you may connect these audio outputs to the 6-Channel

Direct Inputs i.

8. Connect the front, center and surround Speaker Outputs ª‚⁄¤‹ to the respective speakers.

To ensure that all the audio signals are carried to your speakers without loss of clarity or resolution, we suggest that you use high-quality speaker cable. Many brands of cable are available and the choice of cable may be influenced by the distance between your speakers and the receiver, the type of speakers you use, personal preferences and other factors.Your dealer or installer is a valuable resource to consult in selecting the proper cable.

Regardless of the brand of cable selected, we recommend that you use a cable constructed of fine, multistrand copper with a gauge of 14 or smaller. Remember that in specifying cable, the lower the number, the thicker the cable.

Cable with a gauge of 16 may be used for short runs of less than 10 feet. We do not recommend that you use cables with an AWG equivalent of 18 or higher due to the power loss and degradation in performance that will occur.

Cables that are run inside walls should have the appropriate markings to indicate listing with UL, CSA or other appropriate testing agency standards. Questions about running cables inside walls should be referred to your installer or a licensed electrical contractor who is familiar with the NEC and/or the applicable local building codes in your area.

When connecting wires to the speakers, be certain to observe proper polarity. Remember to connect the “negative” or “black” wire to the same terminal on both the receiver and the speaker. The AVR 225 conforms to the latest CEA-recommended color-coding for speaker terminals. Accordingly, the positive (+) terminal, which was previously red, is now a specific color to assist you in making the correct connections. If your speakers have color-coded connections, match the terminal on the AVR 225 to the like terminal on your speakers. For existing speakers with a red terminal for the positive connection, the connections on the AVR 225 are as follows:

Front Left = White Front Right = Red Center = Green Surround Left = Blue Surround Right = Gray

NOTE: While most speaker manufacturers adhere to an industry convention of using black terminals for negative and red ones for positive, some manufacturers may vary from this configuration. To ensure proper phase and optimal performance, consult the identification plate on your speaker or the speaker’s manual to verify polarity. If you do not know the polarity of your speaker, ask your dealer for advice before proceeding, or consult the speaker’s manufacturer.

We also recommend that the length of cable used to connect speaker pairs be identical. For example, use the same length piece of cable to connect the front-left and front-right or surround-left and surround-right speakers, even if the speakers are a different distance from the AVR 225.

9. Connections to a subwoofer are normally made via a line-level audio connection from the Subwoofer Output • to the line-level input of a subwoofer with a built-in amplifier. When a passive subwoofer is used, the connection first goes to a power amplifier, which will be connected to one or more subwoofer speakers. If you are using a powered subwoofer that does not have line-level input connections, follow the instructions furnished with the speaker for connection information.

Video Equipment Connections

Video equipment is connected in the same manner as audio components.Again, the use of high-quality interconnect cables is recommended to preserve signal quality.

Although any compatible video device may be connected to any video input (with the exception of the

Video 1 and Video 2 Out Jacks dg

, which may only be connected to a video

recorder), to make programming device codes into the remote control easier, we recommend that you connect your VCR to the Video 1 Connectors cd

, your television to the Video 2 Input Connectors f , and your cable-TV converter or satellite receiver to the Video 3 Input Connectors h .

1. Connect a VCR’s or other video source’s audio and video Play/Out jacks to the Video 1 or Video 2 In Jacks cf on the rear panel. The Audio and

Video Record/In jacks on the VCR should be

connected

to the Video 1 or Video 2 Out Jacks

dg on the AVR 225.

INSTALLATION AND CONNECTIONS

AVR225

harman/kardon

INSTALLATION AND CONNECTIONS 15

INSTALLATION AND CONNECTIONS

2. Connect the analog audio and video outputs of a television set or any other video source to the Video 2 Input Jacks f .

3. Connect the analog audio and video outputs of a cable TV converter or satellite receiver, or any other video source, to the Video 3 Jacks h .

4. Connect the analog audio and video outputs of a DVD or laser disc player to the DVD Jacks a k . When a digital audio connection is used for your DVD player, the default connection is the Coaxial Digital Audio Input 1 Jack b.However, the connection may also be made to any of the Optical e # or Coaxial b $ digital audio inputs, provided that the digital input source selection is changed as shown on pages 17 and 26. If your DVD or DVD-Audio player includes an onboard surround decoder and 6-channel line-level audio outputs, you may connect these audio outputs to the 6-Channel Direct Inputs i. When you wish to hear this decoded audio, select the DVD input first in order to select the video signal from the DVD player, then select the 6-Channel Direct Input source for the audio.

5. Connect the digital audio outputs of a DVD player, satellite receiver, cable box or HDTV converter to the appropriate Optical or Coaxial Digital Audio Inputs

#$.

6. Connect the Video Monitor Output ·j jacks on the receiver to the composite or S-Video input of your television monitor or video projector.

VIDEO CONNECTION NOTE:

• Composite and S-Video signals may only be viewed in their native formats. The AVR 225 will not convert signals from composite to S-Video, or vice versa. S-Video inputs may only be viewed when the AVR 225 is connected to a TV set or video display with S-Video capability. If you use both standard composite video and S-Video sources in your system, it is important that you connect both an S-Video cable and a standard composite video cable (a coax cable with an RCA plug on both ends) between the AVR 225 and your TV or projector. When it is necessary to make both types of connections to your TV set, use different inputs if possible. Consult the instructions for your TV set or projector for more information on connecting both types of signals.

Power Connections

This unit is equipped with two accessory AC outlets. They may be used to power accessory devices, but they should not be used with high-current draw equipment such as power amplifiers.The total power draw to each outlet may not exceed 100 watts.

The Switched AC Accessory Outlet › will receive power only when the unit is on. This is recommended for devices that have no power switch or a mechanical power switch that may be left in the “ON” position.

NOTE: Many audio and video products go into a Standby mode when they are used with switched outlets, and cannot be fully turned on using the outlet alone without a remote control command.

The Unswitched AC Accessory Outlet ﬁ will receive power as long as the unit is plugged into a powered AC outlet.

Finally, when all connections are complete, plug the Power Cord ﬂ into a nonswitched 120-volt AC wall outlet. You’re almost ready to enjoy the AVR 225!

AVR225

harman/kardon

SYMPTOM CAUSE SOLUTION

Unit does not function when Main • No AC Power • Make certain AC power cord is plugged into a live outlet Power Switch is pushed • Check to see whether 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 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 30 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, which you can due to internal problems locate by visiting our Web site at www.harmankardon.com

No sound from surround or • Incorrect surround mode • Select a mode other than Stereo or Dolby 3 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 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 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.

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.

AVR225

harman/kardon

16 TROUBLESHOOTING GUIDE

AVR225

39-4

39-3

F.I.P (DISPLAY) # HFLCM2054C

39-6

37-5

37-4

37-6

37-2

37-1

37-3

37-8

39-8

harman/kardon

39-2

x27

S11

39-1

S12

S10

x12

DESCRIPTION

SCREW

SCREW,TRANS

SCREW CTB3+6J 7

S10

SCREW,SPECIAL CHD1A012Z 2

S11

SCREW,SPECIAL CHD2A012 4

S12

S10

37-7

PARTS NO. CTB3+8JFZ CTB3+10G CTWS3+10G CTW3+8J CTB3+8J CTW3+12J CTB4+6FFZ CTB3+10GFZ CHD1A023

DESCRIPTION

KNOB,VOLUME CBN1A155K128 1

WINDOW,FIP CGU1A280W 1

KNOB,ROTARY CBN1A156K128 3

BDAGE,HARMAN/KARDON KGB1A111Z 1

4 5

SHEET KMZ1A077 2 SHEET,FIP KMZ1A76 1

PANEL,FRONT CGW1A337R4XK128 1

BRACKET,SIDE CMD1A443 2

KNOB,FUNCTION CBT1A816M7G2 1

KNOB,SET CBT1A818YK128 1

KNOB,DELAY CBT1A819M7G2 1

KNOB,POWER CBT1A817K128 1

INDICATOR,POWER CGL1A200 1

KNOB,MOMS CBC1A139YK128 1

BRACKET,PCB CMK1A010 1

PLATE,SHIELD CMC1A180 1

CUSHION,RUBBER 1CHG1A157

HOLDER,LED A CMH1A167 2

HOLDER,LED B CMH1A168 2

BRACKET,FLT CMD1A374 2

CABINET,TOP CKC1B128S1 1

CHASSIS,BOTTOM CUA1A213 1

RUBBER,CUSHION KHG1A050 4

FOOT CKL1A069H43 4

SUPPORT,CUSHION CHG1A233 2

HEAT SINK CMY1A193 1

BRACKET,PCB KMD1A417 2

HOLDER,PCB KHE1A170 2

BRACKET,TRANS CMD1A464 1

BRACKET,PCB(H/T) KMD1A416 2

TRANS,POWER 1

BRACKET,PCB CMD1A387 2

PANEL,REAR CKF1A235Y 1

BUSHING,AC CORD KHR1A028 1

CORD,POWER CJA523FBY 1

35 36

FRONT PCB ASS'Y

Q,ty

MAIN PCB ASS'Y

INPUT PCB ASS'Y

1 8 12 2 6 27 4

NUT

WASHER

PLATE,SHIELD

PLATE,SHIELD A

PARTS NO. Q,ty

KMZ176

CLT5W006ZU

COP11516E

37-1

FIP PCB

37-2

KEY PCB

37-3

TONE PCB

37-4

PHONE PCB

37-5

MOMS PCB

37-6

POWER LED PCB

37-7

CONNECTOR PCB

37-8

DIGITAL INPUT

COP11517E COP11518E 1

39-1

INPUT PCB

39-2

VIDEO PCB

39-3

TRANS PCB

39-4

TRANS PCB

39-6

TR PCB

39-8

BRIDGE DIODE

CMC1A188 CMC1A189 1

1 1 1 1 1 1 1 1 1 1

1 1 1 1 1 1 1 1 1

AVR225

harman/kardon

AVR125/225 DISASSEMBLY PROCEDURE

<1> TOP-CABINET(21) REMOVAL

1. Remove 13 screws(S1,S7) and then remove the Top-cabinet.

<2> FRONT PANEL ASS’Y REMOVAL

1. Remove the Top-cabinet, referring to the previous step<1>.

2. Disconnect the connect (BN72-Card canle)) on the FP PCB(37-1) from connector(CN72) on the Input PCB(39-1)

3. Disconnect the lead wire(BN80-8P) on the FP PCB(37-1) from connector(CN80) on the Main PCB(38).

4.Disconnect the lead wire(BN16-8P,BN10-4P) on the Tone PCB(37-3) from connector(CN16,CN10) on the Connect PCB(37-7).

5. Disconnect the lead wire(BN41-6P) on the Tone PCB(37-3) from connector(CN41) on the Video PCB(39-2).

6. Disconnect the lead wire(BN18-5P) on the Digital input PCB(37-8) from connector(CN18) on the Input PCB(39-1).

7. Disconnect the lead wire(BN81-6P,BN83-2P) on the FP PCB(37-1) from connector(CN81.CN83) on the Trans PCB(39-3).

8. Disconnect the lead wire(BN88-2P) on the Main PCB(38) from connector(CN88) on the Moms PCB(37-5).

9. Remove 1 screw(S10) and then lead wire(JW82-2P) on the Phone PCB(37-4).

10. Remove 9 screws(S1) and then remove the Front Panel ASS’Y.

<3> TONE PCB(37-3) REMOVAL

1. Rem ove the Top-cabinet , ref erring t o t he previous s tep< 1>.

2. Remove the Front Panel ASS’Y, referring to the previous step<2>.

3. Pull out the Volume Knob ASS’Y & 3 Rotary Knobs(5).

4. Remove 1 Nut(40), 1 Washer(41)

5. Remove 7 screws(S2) and then remove the Tone PCB(37-3).

6. Disconnect the lead wire(BN84-5P,BN90-2P) One the Tone PCB(37-3) from conne cto r (CN84,CN 90) on the FP PCB(37-1)

7. Disconnect the lead wire (BN87-6P) One the Tone PCB(37-3) from connector(CN87) on the Phone PCB(37-4)

<4>PHONE PCB(37-4) REMOVAL

1. Rem ove the Top-cabinet , ref erring t o t he previous s tep< 1>.

2. Remove the Front Panel ASS’Y, referring to the previous step<2>.

3. Disconnect the lead wire (BN87-6P) One the Tone PCB(37-3) from connector(CN87) on the Phone PCB(37-4)

4. Remove 2 screws(S2,S3) and then remove the Phone PCB(37-4) .

<5>POWER LED PCB(37-6) REMOVAL

1. Rem ove the Top-cabinet , ref erring t o t he previous s tep< 1>.

2. Remove the Front Panel ASS’Y, referring to the previous step<2>.

3. Remove 2 screws(S2) and then remove the Power led PCB(37-6).

4. Disconnect the lead wire(BN88-4P) from connector(CN88) on the FP PCB(37-1).

<6>FRONT PCB(37-1) REMOVAL

1. Rem ove the Top-cabinet , ref erring t o t he previous s tep< 1>.

2. Remove the Front Panel ASS’Y, referring to the previous step<2>.

3. Remove the Tone PCB(37-3), referring to the previous step<3>.

4. Remove the Phone PCB(37-4), referring to the previous step<4>.

5. Remove the Power led PCB(37-6), referring to the previous step<5>.

6. Remove 6 screws(S2) and then remove the Front PCB(37-1)

AVR225

<7>TUNER MODULE(40) REMOVAL

1. Rem ove the Top-cabinet , ref erring t o t he previous s tep< 1>.

2. Disconnect the connector(CON1-Card cable) from connector(CN13) on the Input PCB ASS’ Y(39-1) .

3. Remove 2 screws(S8) and then remove the Tuner Module(40).

<8>VIDEO PCB(39-2) REMOVAL

1. Remove the Top-cabinet, referring to the previous step<1>.

2. Disconnect the lead wire(BN41-6P) on the Tone PCB(37-3) from connector(CN41) on the Video PCB(39-2).

3.Disconnect the connector (CN15-Card cable) on the Input PCB(39-1) from lead wire(CN43) on the Video PCB(39-2).

4. Remove 6 screws(S8) and then remove the Video PCB(39-2).

<9>INPUT PCB(39-1) REMOVAL

1. Rem ove the Top-cabinet , ref erring t o t he previous s tep< 1>.

2. Remove the Connect PCB(37-7).

3. Disconnect the lead wire(BN18-5P) on the Digital input PCB(37-8) from connector(CN18) on the Input PCB(39-1).

4. Disconnect the connect (BN72-Card canle)) on the FP PCB(37-1) from connector(CN72) on the Input PCB(39-1)

5. Remove 13 screws(S8,S11) and then remove the Input PCB(39-1).

<10>POWER TRANS(31) REMOVAL

1. Remove the Top-cabinet, referring to the previous step<1>.

2. Disconnect the connector (CN20,BN96) on the Trans PCB from lead wire(CN20-3P,BN96-6P) on the Main PCB( 3 8) .

3. Remove 1 screw(S5) and then remove the Tr PCB(39-6)

4. Remove 1 screw(S5) and then remove the Bridge Diode PCB(39-8)

3. Remove 4 Trans screws(S9) and then remove the Power Trans(31).

<11>MAIN PCB ASS’Y(38) REMOVAL

1. Remove the Top-cabinet, referring to the previous step<1>.

2. Remov e the Tuner module, refer r ing to the previous step<7>.

3. R emove the Video PCB, r eferri ng to the previo us step<8>.

4. Remove the Input PCB, referring to the previous step<9>.

5. Disconnect the lead wire(BN80-8P) on the FP PCB(37-1) from connector(CN80) on the Main PCB(38).

6. Disconnect the lead wire(BN88-2P) on the Main PCB(38) from connector(CN88) on the Moms PCB(37-5).

7. Disconnect the connector (CN20,BN96) on the Trans PCB from lead wire(CN20-3P,BN96-6P) on the Main PCB(38)..

8. Remove 11screws(S1-1EA, S4-2EA, S6-2EA, S8-6EA) and then remove the Main PCB ASS’Y(38).

harman/kardon

AVR225

DISASSEMBLY

1) REMOVAL OF TOP COVER

2) REMOVAL OF FRONT PANEL

harman/kardon

3) PRINCIPAL PARTS LOACTION

TRANS FORMER

FRONT PCB

TUNER

MODULE

INPUT PCB

MAIN PCB

AVR225

AMPLIFIER SECTION BIAS ADJUSTMENT

Measurement condition

. No input signal or volume position is minimum.

Standard value.

. Ideal current = 48mA ( ± 5%) . Ideal DC Voltage = 21.12mV ( ± 5%)

CUP11517X (MAIN PCB)

harman/kardon

CN63

CN62

VR62

VR64

CN64

VR61

CN61

VR63

DC VOLTMETER..............Connect to CN61, CN62, CN63, CN64, CN65

NO. Channel Adjust for

1 Front Left 21.12mV (±5%)

2 Front Right 21.12mV (±5%)

3 Center

4 Surround Left

5 Surround Right

21.12mV (±5%)

CN65

VR65

Adjustment

VR61

VR62

VR63

VR64

VR65

AVR225

harman/kardon

Overview

The LC74763 and LC74763M are on-screen display CMOS LSIs that superimpose text and low-level graphics onto a TV screen (video signal) under the control of a microcontroller. The display characters have a 12 by 18 dots structure, and 128 characters are provided.

Features

• Display structure: 12 lines by 24 characters (up to 288 characters)

• Maximum character display: Up to 288 characters

• Character configuration: 12 (W) by 18 (H) dots structure

• Number of characters: 128 characters (128 plus space 2 fonts)

• Character sizes: Three sizes (normal, double, and triple sizes)

• Display starting positions: 64 horizontal and 64 vertical locations

• Reverse video function: Characters can be inverted on a per character basis.

• Flashing types: Two types with periods of 0.5 and 1.0 second on a per character basis (duty fixed at 50%)

• Background color: One of eight colors (when internal synchronization used)

• External control input: Serial data input in 8-bit units

• Built-in horizontal/vertical sync separation circuit, AFC circuit, and synchronization detector

• Video output: Composite video signal output in NTSC, PAL, PAL-M, PAL-N, PAL60, NTSC4.43, or SECAM format

Package Dimensions

unit: mm

3196-DIP30SD

unit: mm

3216A-MFP30S

Preliminary

[LC74763M]

SANYO: MFP30S

[LC74763]

SANYO: DIP30SD

CMOS IC

LC74763, 74763M

On-Screen Display LSI

AVR225

LC74763M : IC53

harman/kardon

Pin Functions

Pin No. Symbol Function Description

1 V

Ground Ground connection

2 Xtal

IN1

Crystal oscillator connection

Connection for the crystal and capacitor used to form the crystal oscillator that generates

3 Xtal

OUT1

the internal synchronization signal. The oscillator can be selected with a command switch.

4 HSYNC

OUT

Horizontal synchronization Outputs the horizontal synchronization signal (AFC). The output polarity can be selected output (metal option). Also functions as general output port (command switch).

5 Xtal

IN2

Crystal oscillator connection

Connection for the crystal and capacitor used to form the crystal oscillator that generates

6 Xtal

OUT2

the internal synchronization signal.

7 VSYNC

OUT

Vertical synchronization output

Outputs the vertical synchronization signal. The output polarity can be selected (metal option). Also functions as general output port (command switch).

8 CS Enable input

Enables/disables serial data input. Serial data is enabled when this pin is low (hysteresis input). Pull-up resistor built in (metal option).

9 SIN Data input Serial data input (hysteresis input). Pull-up resistor built in (metal option).

10 SCLK Clock input Clock input for serial data input (hysteresis input). Pull-up resistor built in (metal option).

SECAM mode switch input/

During input, switches between SECAM and other modes.

11 SECAM

output (command switch)

During output, functions as general output port or internal V output (command switch). Low = other modes, high = SECAM mode

525/625 switch input/output

During input, switches between 525 scan lines and 625 scan lines.

12 525/625

(command switch)

During output, functions as general output port or character data output (command switch). Low = 525 lines, high = 625 lines

NTSC/PAL switch input/output

Switches the color mode between NTSC and PAL.

13 NTSC/PAL

(command switch)

During output, functions as general output port or frame data output (command switch). Low = NTSC, high = PAL

Switch FSC between 3.58 MHz and 4.43 MHz.

14 3.58/4.43 3.58/4.43 switch input/output During output, functions as general output port or halftone output (command switch).

(command switch) Low = 3.58, high = 4.43

15 RST Reset input

System reset input pin, low is active (hysteresis input). Pull-up resistor built in (metal option).

16 CV

OUT

Video signal output Composite video output

17 V

DD2

Power supply connection Power supply connection for composite video signal level generation

18 CV

Video signal input Composite video input

19 CV

Video signal input SECAM chroma signal input

20 SYNC

Sync separator circuit input Built-in sync separator circuit video signal input

21 SEP

Sync separator circuit Built-in sync separator circuit

22 V

Ground Ground connection

23 PD

OUT

Control voltage output AFC control voltage output

24 AMP

AFC filter connection Filter connection

25 AMP

OUT

26 FC Control voltage input AFC control voltage input 27 VCO

LC oscillator connection VCO LC oscillator circuit coil and capacitor connection

28 VCO

OUT

External synchronization signal

Outputs the exclusive NOR of the horizontal synchronization signal (AFC) and CSYNC (sync

29 SYNC

DET

detection output

separator). The output polarity can be selected (metal option). Also functions as general output port (command switch).

30 V

DD1

Power supply connection Power supply connection (+5 V: digital system power supply)

LC74763, 74763M

AVR225

harman/kardon

LC74763, 74763M

Pin Assignment

No. 5039-4/19

Top view

AVR225

harman/kardon

System Block Diagram

LC74763, 74763M

AVR225

harman/kardon

LEVEL SHIFTER

14 28

LATCH CIRCUIT

SHIFT REGISTER

LEVEL SHIFTER

LATCH CIRCUIT

L-S R-S

Vss GND VDD

L-S

L-COM

L-S

L-COM

L-S

L-COM

L-S

L-COM

R-S

R-COM

R-S

R-COM

R-S

R-COM

R-S

R-COM

DATA

LEVEL SHIFTER

14 28

LATCH CIRCUIT

SHIFT REGISTER

LEVEL SHIFTER

LATCH CIRCUIT

L-S R-S

Vss GND VDD

L-S

L-COM

L-S

L-COM

L-S

L-COM

L-S

L-COM

R-S

R-COM

R-S

R-COM

R-S

R-COM

R-S

R-COM

DATA

TC9162AF (FUNCTION/INPUT : IC30)

BLOCK DIAGRAM

TC9162AF (FUNCTION/INPUT : IC30)

BLOCK DIAGRAM

TC9215AF (TONE CONTROL : IC80)

BLOCK DIAGRAM

AVR225

harman/kardon

GND 1

OFF 2

TC9215AF

16 V

LEVEL SHIFTER

5 6

8 9

14 28

12 13

25 24

23 22

21 20

19 18

17 16

LATCH CIRCUIT

SHIFT REGISTER

LEVEL SHIFTER

LATCH CIRCUIT

L-S R-S

Vss GND VDD

L-S

L-COM

L-S

L-COM

L-S

L-COM

R-S

R-COM

R-S

R-COM

R-S

R-COM

DATA

LEVEL SHIFTER

5 6

8 9

14 28

12 13

25 24

23 22

21 20

19 18

17 16

LATCH CIRCUIT

SHIFT REGISTER

LEVEL SHIFTER

LATCH CIRCUIT

L-S R-S

Vss GND VDD

L-S

L-COM

L-S

L-COM

L-S

L-COM

R-S

R-COM

R-S

R-COM

R-S

R-COM

DATA

TC9164AF (FUNCTION/INPUT) : IC22

BLOCK DIAGRAM

TC9163AF (FUNCTION/INPUT) : IC20

BLOCK DIAGRAM

AVR225

harman/kardon

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