Harman Kardon AVR-125 Service manual

harman/kardon

AVR125

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………..…..…….52 ELECTRICAL PARTS LIST………..…..….53 PCB DRAWINGS……………………..……62 SCHEMATICS…………………………...…70 WIRING DIAGRAM..……………………….82 PACKAGING………..…………………...…83

AVR125

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

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

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

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.

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

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.

AVR125

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

TECHNICAL SPECIFICATIONS 4

Audio Section

Stereo Mode Continuous Average Power (FTC)

55 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: 45 Watts per channel @ < 0.07% THD, 20Hz–20kHz into 8 ohms

Center channel: 45 Watts @ < 0.07% THD, 20Hz–20kHz into 8 ohms

Surround channels: 45 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

Pro Logic II 45dB

Dolby Digital (AC-3) 55dB

DTS 55dB

Frequency Response

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

Current Capability (HCC) ±25 Amps Transient Intermodulation

Distortion (TIM) Unmeasurable Slew Rate 40V/µsec

FM Tuner Section

Frequency Range 87.5–108.0MHz Usable Sensitivity IHF 1.3µV/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 520–1710 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 125V/60Hz Power Consumption 68W idle, 540W maximum

(2 channels driven)

Dimensions

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

Weight 23.8 lb (10.8kg)

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

Harman Kardon is a registered trademark, and Power for the Digital Revolution is a trademark, of Harman Kardon, Inc.

*Manufactured under license from Dolby Laboratories.

DTS and DTS Surround are registered 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.

Crystal is a registered trademark of Cirrus Logic Corp.

AVR125

harman/kardon

FRONT-PANEL CONTROLS 5

1 Main Power Switch: Press this button to apply power to the AVR 125.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 125; 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 125’s output through a pair of headphones. Be certain that the headphones have a standard

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

5 Selector Buttons: When you are establishing the AVR 125’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 once or twice so that the words

TONE

OUT

appear in the Main Information Display Û,

the output signal 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. Depending on the type of input, some modes are not always available. (See page 22 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 .

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 Input % Video 3 Video Input Jacks ^ Video 3 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 125

AM/FM

)

* &

(



AVR125

harman/kardon

6 FRONT-PANEL CONTROLS

FRONT-PANEL CONTROLS

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 125 to the Tuner mode. Pressing it again will switch between the AM and FM frequency bands. (See page 25 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 25 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 Indicators .

@ 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 25 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 Input: 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 3 Video Input Jacks: These jacks may be used for temporary connection to the composite or SVideo output of video games, camcorders or other portable video products.

^ Video 3 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 125 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

Information Display

Û into the AVR 125’s memory. The set button may also be used to change the display brightness. (See page 26.)

 Input Indicators: A green LED will light in front of the input that is currently being used as the source for the AVR 125.

Ò Delay: Press this button to begin the sequence of steps required to enter delay time settings. (See page 19 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 #c and Coaxial $·

Digital inputs or to select the source’s analog input.

(See pages 23–25 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 25.)

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 16–19 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 18.)

˜ 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.

AVR125

harman/kardon

FRONT-PANEL INFORMATION DISPLAY 7

FRONT-PANEL INFORMATION DISPLAY

MEM PRESET

SLEEP

AUTOANALOGCOAX 123OPT 123DTS

PCM

TUNED ST

DDPL II 3ST DSP VMAx NF LOGIC 7 CM

KHz

MHz

NIGHT

SL SR

LFE

S RTU Q PO M L

C D E

FG H I

A Bitstream Indicators B DTS Mode Indicator C Dolby Digital Indicator D Dolby Pro Logic II Indicator E Dolby 3 Stereo Indicator/Stereo Indicator F Main Information Display 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 Analog Input Indicator T Coaxial Digital Input Indicators U 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 2-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 sound track is available and has been selected.

E Dolby 3 Stereo Indicator/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 Main Information Display: This display shows messages relating to the status, input source, surround mode, tuner, volume level or other aspects of the AVR 125’s operation.

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, Theater and 5-Channel Stereo.

VMAx Mode Indicators: This indicator lights 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 22 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 of Logic 7; LOGIC 7M appears for the Music version of Logic 7. (See page 22 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 25 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 21 for information on the Sleep Function.)

K Night Mode Indicator: This indicator lights when the AVR 125 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 24 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 17 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 pages 18–19 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 25 for more information on tuner presets.)

N Sleep Indicator: This indicator lights when the Sleep function is in use.The numbers in the Preset Number/Sleep Timer Indicators will show the minutes

AVR125

harman/kardon

8FRONT-PANEL INFORMATION DISPLAY

FRONT-PANEL INFORMATION DISPLAY

remaining before the AVR 125 goes into the Standby mode. (See page 21 for more information.)

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.

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

T Coaxial Digital Input Indicators: These indicators light to show when a Coaxial Digital Input has been selected.

U Optical Digital Input Indicators: These indicators light to show when an Optical Digital Input has been selected.

NOTE: See page 23 for information on assigning either an analog input or one of the digital inputs to the source currently in use.

AVR125

harman/kardon

REAR-PANEL CONNECTIONS 9

REAR-PANEL CONNECTIONS

›

ﬁ

ﬂ

‡

•

‚

™

∞

⁄

‹

SURR SURR

, 1A

, 0.5A

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

§ Subwoofer Output ¶ Front Speaker Outputs

• Surround Speaker Outputs ª Front Speaker Outputs ‚ Surround Speaker Outputs ⁄ Front Speaker Outputs ¤ Switched AC Accessory Outlet ‹ Unswitched AC Accessory Outlet

› AC Power Cord ﬁ Optical Digital Output ﬂ Coaxial Digital Output ‡ Video Monitor S-Video Output ° DVD S-Video Input

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

h DVD Audio Inputs i Video 1 Composite Video Input j Video 1 Audio Inputs k Video 1 Composite Video Output

Video 1 Audio Outputs Video 2 Composite Video Input Video 2 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 sup-

plied 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.

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

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

AVR125

harman/kardon

10 REAR-PANEL CONNECTIONS

REAR-PANEL CONNECTIONS

¤ 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 125.Any device connected to this outlet will be off when the AVR 125 is in the Standby mode, and power will be supplied to the outlet when the AVR 125 is turned on.

‹ 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 125 is on or off.

IMPORTANT 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.

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

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

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

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

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

· Coaxial Digital 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.

ai 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.

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

RECORD/INPUT composite or S-Video

jack on a VCR.

c Optical Digital 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.

d 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.

e 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

h DVD Audio Inputs: Connect these jacks to the analog audio jacks on a DVD player or other source device.

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

h, change the input setting as shown on

page 20.

j 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, satellite receiver,

cable box, video game or other composite video source.

AVR125

harman/kardon

REMOTE CONTROL FUNCTIONS 11

●

REMOTE CONTROL FUNCTIONS

POWER

MUTE

AVR

DVD

AM/FM

TAPE

VID 2

VCR

CBL/SAT

6 CH.

VID 1

VID 3

OFF

SLEEP

T/V

SURR.

CH.

VOL.

SET

TUN-M

MEM

D.SKIP

DIRECT

TUNING

PRESET

CLEAR

TEST

NIGHT

125

SKIP

a Power Off Button b IR Transmitter Window c Program 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 n‹Button o Set Button p Digital Select q¤Button r Numeric Keys s Tuner Mode t Direct Button u Tuning Up/Down v Macro Buttons w Transport Controls x Skip Up/Down Buttons y Disc Skip Button z Preset Up/Down ` Clear Button

Memory Button

Delay/Prev. Ch.

›

Button

Speaker Select

Spare Button

Volume Up/Down

TV/Video Selector

6-Channel Direct Input

Mute

NOTE: The function names shown here refer to each button’s feature when used with the AVR 125. Most buttons have additional functions when used with other devices. See pages 31–32 for a list of these functions.

AVR125

harman/kardon

12 REMOTE CONTROL FUNCTIONS

REMOTE CONTROL FUNCTIONS

IMPORTANT NOTE: The AVR 125’s remote may be programmed to control up to seven devices, including the AVR 125. Before using the remote, remember to press the

Input Selector Button e that corre-

sponds to the unit you wish to operate. In addition, the AVR 125’s remote is shipped from the factory to operate the AVR 125 and most recent Harman Kardon products.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 pages 27–30 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 125. (See pages 31–32 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 125 in the Standby mode, first press the

AVR Selector Button f and then press this

button.

b IR Transmitter Window: Point this window towards the AVR 125 when pressing buttons on the remote to make certain that infrared commands are properly received.

c Program Indicator: This three-color indicator is used to guide you through the process of programming the remote. (See pages 27–30 for information on programming the remote.)

d Power On Button: After selecting a device by pressing one of the

Input Selectors e, press this

button to turn the device on. To turn on the AVR 125, 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 125 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 125. 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 125’s functions with the remote.

f AVR Selector: Pressing this button will switch the remote so that it will operate the AVR 125’s functions. If the AVR 125 is in the Standby mode, it will also turn the AVR 125 on.

g AM/FM Tuner Select: Press this button to select the AVR 125’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 calibrate the AVR 125’s output levels. (See pages 18–19 for more information on calibrating the AVR 125.)

i Sleep Button: Press this button to place the unit in the Sleep mode.After the time shown in the display, the AVR 125 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 it is also used to end the process of creating a macro command. (See page 28 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 22 for more information.) This button is also used to tune channels when the TV is selected, and during the process of erasing stored macro commands. (See page 28 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 29 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 to preserve dialog (center channel) intelligibility at low volume levels.

l Channel Select Button: This button is used to start the process of setting the AVR 125’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 25 for more information.)

m⁄Button: This multipurpose button is used 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.

n‹Button: This button is used to change the setting during some of the setup procedures for the AVR 125.

o Set Button: This button is used to enter settings into the AVR 125’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

·c#$ to the source currently in use. (See page 23 for more information on using digital inputs.)

q¤Button: This multipurpose button is used 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.

r Numeric Keys: These buttons serve as a ten- 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

u8 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 weak will change to monaural reception. (See page 25 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 sta-

tion. (See page 25 for more information on the tuner.)

min80min70min60min50min

min

min20min10min

OFF

AVR125

harman/kardon

REMOTE CONTROL FUNCTIONS 13

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 illumi-

nated, 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 25 for more information.)

v Macro Buttons: Press these buttons to store or recall a “Macro”, which is a preprogrammed sequence of commands stored in the remote. (See page 28 for more information on storing and recalling macros.)

w Transport Controls: These buttons do not have any functions for the AVR 125, 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 29 for more information on programming the Transport Control Punch-Through capability of the remote.)

x Skip Up/Down Button: These buttons have no direct function with the AVR 125, 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.

y Disc Skip Button: This button has no direct function for the AVR 125, but when used with a compatibly programmed CD or DVD changer, it will change the disc currently being played in the changer. (See page 28 for more information on using the remote with other devices.)

z Preset Up/Down: When the tuner is in use, press these buttons to scroll through the stations programmed into the AVR 125’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 125’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 25 for more information.)

Delay/Prev Ch.: Press this button to begin

the process for setting the delay times used by the

AVR 125 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 19 for more information.)

›

Button: Press this button to change a setting

or selection when configuring many of the AVR 125’s settings.

Speaker Select: Press this button to begin the

process of configuring the AVR 125’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 17 for more information.)

Spare Button: This button does not have any

function for the operation of the AVR 125, but it is available for use when programmed with the code from another remote. (See page 27 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 29 for more information on programming the Volume PunchThrough capability of the remote, which allows you to change the AVR 125’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 125, 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.

6-Channel Direct Input: Press this button to

select the component connected to the

6-Channel

Direct Input

e as the source.

Mute: Press this button to momentarily silence

the AVR 125 or TV set being controlled, depending on which device has been selected. When the AVR 125 is muted, press this button or use the

Volume

Control

Ó to return to the previous volume

level. When the AVR 125 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 27 for more information on programming the remote.)

REMOTE CONTROL FUNCTIONS

AVR125

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

Tape

Input Jacks

∞. Connect the analog Record/In jacks

on the recorder to the

Tape Output Jacks ¢ on the

AVR 125.

3. Connect the output of any digital sources to the appropriate input connections on the AVR 125 rear panel. Note that the

Optical and Coaxial Digital

Inputs

·c#$ 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 Output ﬁ or Coaxial

Digital Output

ﬂ on the rear panel of the AVR 125 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

Antenna (75 ohm) Connection

™. The FM antenna may also 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

e. It is also necessary to connect the coax or optical digital output of a DVD player to coax or optical digital inputs on the AVR 125

·c#$

to take advantage of Dolby Digital or DTS soundtracks. Connect the DVD player’s video outputs to the

DVD

Video Input Jacks

°g.For audio-only sources, such as DVD audio or SACD, select the 6-Channel Direct Input source. For video sources, such as a DVD select the DVD Input.

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 ten 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 125 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 125 to the like terminal on your speakers. For existing speakers with a red terminal for the positive connection, the connections on the AVR 125 are as follows:

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

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 125.

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 Output Jacks bk , 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

abijk , your television to the

Video 2 Connectors d , and your cable-TV converter or satellite receiver to the

Video 3

Connectors

%^.

1. Connect a VCR’s audio and video Play/Out jacks to the

Video 1 Input Jacks aij on the rear panel.

The Audio and Video Record/In jacks on the VCR

INSTALLATION AND CONNECTIONS

AVR125

harman/kardon

INSTALLATION AND CONNECTIONS 15

INSTALLATION AND CONNECTIONS

should be connected to the Video 1 Out Jacks bk on the AVR 125.

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

Video 2

Jacks

d .

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 %^ on the

front panel of the AVR 125.

4. Connect the analog audio and video outputs of a DVD or laser disc player to the

DVD Jacks

°gh. When a digital audio connection is used for your DVD player, the default connection is the Coaxial Digital Input 1 Jack ·. However, the connection may also be made to any of the

Optical

c# or Coaxial ·$ Digital Inputs, provided that the digital input source selection is changed as shown on page 23. 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 e. 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 Inputs

·c#$.

6. Connect the

Video Monitor Output ‡f 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 125 will not convert signals from composite to S-Video, or vice versa. S-Video inputs may only be viewed when the AVR 125 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 125 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 ‹ 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 › into a nonswitched 120-volt AC wall outlet. You’re almost ready to enjoy the AVR 125!

AVR125

harman/kardon

16 TROUBLESHOOTING GUIDE

TROUBLESHOOTING GUIDE

SYMPTOM CAUSE SOLUTION

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

• Check to see whether outlet is switch-controlled

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

•

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 26 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 configuratioin

• 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 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 125’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 6 button for

three seconds.

The unit will turn on automatically and display the

RESET message in the Main Information Display

F. 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 29.

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.

Your AVR 125 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 125, including updated information and user hints, is available from our Web site at www.harmankardon.com.

AVR125

harman/kardon

AVR125

AVR125 Exploded View

F.I.P (DISPLAY)

# HFLCM2054C

37-5

37-4

37-6

37-2

harman/kardon

39-4

39-2

x24

39-3

S11

39-8

39-6

S10

37-1

37-3

x13

39-1

S12

37-8

NO S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12

DESCRIPTION SCREW SCREW SCREW SCREW SCREW SCREW SCREW SCREW SCREW,TRANS SCREW SCREW,SPECIAL SCREW,SPECIAL

PARTS NO. CTB3+8JFZ CTB3+10G CTWS3+10G CTW3+8J CTB3+8J CTW3+12J CTB4+6FFZ CTB3+10GFZ CHD1A023 CTB3+6J CHD1A012Z CHD2A012

37-7

S10

Q,ty

14 28 1 8 12 2 6 24 4 7 2 4

DESCRIPTION

1 2

KNOB,ROTARY

BDAGE,HARMAN/KARDON

4 5

SHEET SHEET,FIP

PANEL,FRONT

BRACKET,SIDE

KNOB,FUNCTION

KNOB,SET

KNOB,DELAY

KNOB,POWER

INDICATOR,POWER

KNOB,MOMS

BRACKET,PCB

PLATE,SHIELD

CUSHION,RUBBER

HOLDER,LED A

HOLDER,LED B

BRACKET,FLT

20 21

CHASSIS,BOTTOM

RUBBER,CUSHION

FOOT

SUPPORT,CUSHION

HEAT SINK

BRACKET,PCB

HOLDER,PCB

BRACKET,TRANS

BRACKET,PCB(H/T)

TRANS,POWER

BRACKET,PCB

PANEL,REAR

BUSHING,AC CORD

CORD,POWER

35 36

FRONT PCB ASS'Y

MAIN PCB ASS'Y

INPUT PCB ASS'Y

NUT

WASHER

PLATE,SHIELD A

PARTS NO. Q,ty CBN1A155K128KNOB,VOLUME

CBN1A156K128 KGB1A111Z KMZ1A077

KMZ1A76

KMZ176

CGW1A337R4YK128 CMD1A443 CBT1A816M7G2 CBT1A818YK128 CBT1A819M7G2 CBT1A817K128 CGL1A200 CBC1A139YK128 CMK1A010 CMC1A180 CHG1A157 CMH1A167 CMH1A168 CMD1A374 CKC1B128S1CABINET,TOP CUA1A213 KHG1A050 CKL1A069H43 CHG1A233 CMY1A192 CMD1A417 CHE170 CMD1A464 CMD1A416 CLT5V030ZU CMD1A387 CKF3A235Z KHR1A028 CJA523FBY

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

39-1

INPUT PCB

39-2

VIDEO PCB

39-3

TRANS PCB

39-4

TRANS PCB

39-6

TR PCB

39-8

BRIDGE DIODE

CMC1A189

1 1CGU1A280XWINDOW,FIP 3 1 2 1 1 2 1 1 1 1 1 1 1 1 1 2 2 2 1 1 4 4 2 1 2 2 1 2 1 2 1 1 1

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

AVR125

harman/kardon

AVR125/225 DISASS E MBLY P ROCEDURE

<1> TOP-CABINET(21) REMOVAL

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

<2> FRONT PANEL ASS’Y REMOVAL

1. Rem ove 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, referri ng to the previous step<2>.

3. Pull out the Volum e 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 connector(CN84,CN90) 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, referri ng 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, referri ng 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, referri ng to the previous step<2>.

3. Rem ove 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. Rem ove 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)

AVR125

<7>TUNER MODULE(40) REMOVAL

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

<8>VIDEO PCB(39-2) REMOVAL

<9>INPUT PCB(39-1) REMOVAL

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

<10>POWER TRANS(31) REMOVAL

<11>MAIN PCB ASS’Y(38) REMOVAL

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).

1. Rem ove 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 t he 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).

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).

1. Rem ove 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 scr ews(S9) and then remove the Power Trans(31).

1. Rem ove 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. Rem ove 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).

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AVR125

DISASSEMBLY

1) REMOVAL OF TOP COVER

2) REMOVAL OF FRONT PANEL

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3) PRINCIPAL PARTS LOACTION

TRANS FORMER

FRONT PCB

TUNER

MODULE

INPUT PCB

MAIN PCB

AVR125

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)

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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

AVR125

harman/kardon

Oscillator

P/S=”L”

Oscillator

P/S=”H”

AVR125

BLOCK DIAGRAM

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RX0 RX1 RX2 RX3 RX4 RX5 RX6 RX7

TX0

TX1

DVDD DVSS TVDD

8 to 3

Input

Selector

DIT

VIN

RAVDDAVSS

Clock

Recovery

DAIF

Decoder

B,C,U,VOUT

AC-3/MPEG

Detect

DEM

INT0

X'tal

Error &

STATUS

Detect

INT1

XTOXTI

Q-subcode

buffer

Clock

Generator

Audio

I/F

µP I/F

MCKO1 MCKO2

LRCK

BICK

SDTO

DAUX

PDN

CSN

CCLK

CDTO

CDTI

IIC

RX0 RX1 RX2 RX3

IPS0 DIF0 DIF1 DIF2

TX0

TX1

DVDD DVSS TVDD

4 to 2

Input

Selector

DIT

Serial Control Mode

RAVDDAVSS

Clock

Recovery

DAIF

Decoder

AC-3/MPEG

Detect

DEM

X'tal

Error &

STATUS

Detect

XTOXTI

Clock

Generator

Audio

I/F

MCKO1 MCKO2

LRCK

BICK

SDTO

DAUX

PDN

OCKS0 OCKS1

CM0 CM1

VIN

B,C,U,VOUT

INT0

Parallel Control Mode

INT1

IPS1

DVSS

LRCK

AVR125

DIR IC PIN ASSIGNMENT & BLOCK DIAGRAM PIN ASSIGNMENT (TOP VIEW)

harman/kardon

INT1

36 35 34 33 32 31 30 29 28 27 26

MCKO1 23

RX3

AVSS

TEST1

RX1

RX2

IPS0/RX4

AVSS

DIF0/RX5 3

TEST2 4

DIF1/RX6

AVSS 6

DIF2/RX7 7

IPS1/IIC 8

P/SN XTL0 10 XTL1

VIN 12 25 SDTO

1 2

TVD

TX015TX1

AK4114VQ

AVSS

Top View

BOU

COU

RX0

UOU

VCOM40R39AVDD

AVSS

VOU

DVD

INT0 OCKS0/CSN/CAD0 OCKS1/CCLK/SCL CM1/CDTI/SDA CM0/CDTO/CAD1 PDN XTI XTO DAUX MCKO2 BICK

AVR125

No. Pin Name I/O Function

IPS0 I Input Channel Select 0 Pin in Parallel Mode

RX4 I Receiver Channel 4 Pin in Serial Mode (Internal biased pin)

2 NC(AVSS) I

DIF0 I Audio Data Interface Format 0 Pin in Parallel Mode

RX5 I Receiver Channel 5 Pin in Serial Mode (Internal biased pin)

4 TEST2 I

DIF1 I Audio Data Interface Format 1 Pin in Parallel Mode

RX6 I Receiver Channel 6 Pin in Serial Mode (Internal biased pin)

6 NC(AVSS) I

DIF2 I Audio Data Interface Format 2 Pin in Parallel Mode

RX7 I Receiver Channel 7 Pin in Serial Mode (Internal biased pin) IPS1 I Input Channel Select 1 Pin in Parallel Mode

IIC I

9 P/SN I

10 XTL0 I X’tal Frequency Select 0 Pin 11 XTL1 I X’tal Frequency Select 1 Pin 12 VIN I V-bit Input Pin for Transmitter Output 13 TVDD I Input Buffer Power Supply Pin, 3.3V or 5V

14 NC I 15 TX 0 O Transmit Channel (Through Data) Output 0 Pin 16 TX1 O

17 BOUT O 18 COUT O C-bit Output Pin for Receiver Input

19 UOUT O U-bit Output Pin for Receiver Input 20 VOUT O V-bit Output Pin for Receiver Input 21 DVDD I Digital Power Supply Pin, 3.3V 22 DVSS I Digital Ground Pin 23 MCKO1 O Master Clock Output 1 Pin 24 LRCK I/O Channel Clock Pin 25 SDTO O Audio Serial Data Output Pin 26 BICK I/O Audio Serial Data Clock Pin 27 MCKO2 O Master Clock Output 2 Pin 28 DAUX I Auxiliary Audio Data Input Pin 29 XTO O X'tal Output Pin 30 XTI I X'tal Input Pin

IC PIN FUNCTION AK4114VQ IC75

PIN/FUNCTION

No Connect

No internal bonding. This pin should be connected to AVSS.

TEST 2 pin

This pin should be connect to AVSS.

No Connect

No internal bonding. This pin should be connected to AVSS.

IIC Select Pin in Serial Mode.

“L”: 4-wire Serial, “H”: IIC

Parallel/Serial Select Pin

“L”: Serial Mode, “H”: Parallel Mode

No Connect

No internal bonding. This pin should be open or connected to DVSS.

When TX bit = “0”, Transmit Channel (Through Data) Output 1 Pin. When TX bit = “1”, Transmit Channel (DAUX Data) Output Pin (Default). Block-Start Output Pin for Receiver Input

“H” during first 40 flames.

harman/kardon

+ 58 hidden pages

Harman Kardon AVR-125 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual