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harman/kardon

AVR145
5 X 40W 5.1 CHANNEL A/V RECEIVER

SERVICE MANUAL




CONTENTS

ESD WARNING.....................................2 DISASSEMBLY.....................................27
LEAKAGE TESTING...............................3 UNIT EXPLODED VIEW..........................31
BASIC SPECIFICATIONS.......................4 EXPLODED VIEW PARTS LIST...............32
PACKAGING........................................5 AMP BIAS ADJUSTMENT......................33
FRONT PANEL CONTROLS.....................6 BLOCK DIAGRAM................................34
REAR PANEL CONNECTIONS................8 PCB DRAWINGS.................................35
REMOTE CONTROL FUNCTIONS..........10 ELECTRICAL PARTS LIST.....................42
CONNECTIONS/INSTALLATION.............13 SEMICONDUCTOR PINOUTS................73
OPERATION.......................................22 SCHEMATICS....................................144
TROUBLESHOOTING GUIDE.................26 WIRING DIAGRAM..............................151
REMOTE & PROCESSOR RESETS..........26


harman/kardon, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797 Rev 0 1/2007
AVR145 harman/kardon




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.

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

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.




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.




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AVR145 harman/kardon

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.




Reading should
not be above
Leakage
0.5mA
Device current
under tester
test

Test all
exposed metal
surfaces
Also test with
plug reversed
(Using AC adapter Earth
plug as required) ground


AC Leakage Test




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.




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AVR145 harman/kardon

AVR 145 TECHNICAL SPECIFICATIONS
Audio Section AM Tuner Section
Stereo Mode Frequency Range 520­1720kHz
Continuous Average Power (FTC) Signal-to-Noise Ratio 45dB
50 Watts per channel, 20Hz­20kHz, Usable Sensitivity Loop 500µV
@ <0.07% THD, both channels driven into 8 ohms Distortion 1kHz, 50% Mod 0.8%
Selectivity ±10kHz, 30dB
Five-Channel Surround Modes
Power per Individual Channel
Video Section
Front L&R channels: Television Format NTSC
40 Watts per channel Input Level/Impedance 1Vp-p/75 ohms
@ <0.07% THD, 20Hz­20kHz into 8 ohms Output Level/Impedance 1Vp-p/75 ohms
Center channel: Video Frequency Response
40 Watts @ <0.07% THD, 20Hz­20kHz into 8 ohms (Composite and S-Video) 10Hz­8MHz (­3dB)
Surround (L & R Side) channels: Video Frequency Response
(Component Video) 10Hz­100MHz (­3dB)
40 Watts per channel
@ <0.07% THD, 20Hz­20kHz into 8 ohms General
Input Sensitivity/Impedance Power Requirement AC 120V/60Hz
Linear (High-Level) 200mV/47k ohms Power Consumption 65W idle, 540W maximum
(5 channels driven)
Signal-to-Noise Ratio (IHF-A) 100dB
Dimensions (Product) (Shipping)
Surround System Adjacent Channel Separation Width 17-5/16 inches (440mm) 22 inches (559mm)
Pro Logic I/II 40dB Height 5-7/8 inches (150mm) 10-1/2 inches (267mm)
Dolby Digital (AC-3) 55dB Depth 13-3/4 inches (350mm) 18-3/4 inches (476mm)
DTS 55dB
(Product) (Shipping)
Frequency Response Weight 24.4 lb (11.1kg) 29 lb (13.2kg)
@ 1W (+0dB, ­3dB) 10Hz ­130kHz
High Instantaneous Depth measurement includes knobs, buttons and terminal connections.
Current Capability (HCC) ±25 Amps Height measurement includes feet and chassis.
All features and specifications are subject to change without notice.
Transient Intermodulation
Distortion (TIM) Unmeasurable
Harman Kardon, Harman International, Designed to Entertain and Logic 7 are trademarks of Harman International
Slew Rate 40V/µsec Industries, Incorporated, registered in the United States and/or other countries. and EzSet are trade-
marks of Harman International Industries, Incorporated.
FM Tuner Section Dolby, Pro Logic and the double-D symbol are trademarks of Dolby Laboratories.
Frequency Range 87.5­108.0MHz Manufactured under license from Dolby Laboratories.
Usable Sensitivity IHF 1.3µV/13.2dBf
DTS, DTS Surround, DTS-ES and DTS Neo:6 are registered trademarks, and DTS 96/24 is a trademark, of DTS,
Signal-to-Noise Ratio Mono/Stereo 70/68dB
Inc.
Distortion Mono/Stereo 0.2/0.3%
Stereo Separation 40dB @ 1kHz Cirrus Logic is a registered trademark of Cirrus Logic, Inc.
Selectivity ±400kHz, 70dB SACD is a trademark of Sony Corporation.
Image Rejection 80dB
IF Rejection 90dB Apple and iPod are registered trademarks, and Shuffle is a trademark, of Apple Computer, Inc.

Blu-ray Disc is a trademark of the Blu-ray Disc Association.

HD-DVD is a trademark of the DVD Format/Logo Licensing Corporation (DVD FLLC).

TiVo is a registered trademark of TiVo Inc.




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AVR145 harman/kardon




AVR 145




DOOR KIT

FRONT COVER "A", SILVER

FRONT COVER "B", SILVER




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AVR145 harman/kardon

FRONT-PANEL CONTROLS
Main Power Switch: This is a mechanical switch that turns the Analog Audio, Video and Digital Audio Inputs: Connect a
power supply on or off. It is usually left pressed in (On position) at all source component that will only be used temporarily to these jacks,
times, and cannot be turned on using the remote control. such as a camera or game console. Remember to select only one type
of audio and one type of video connection.
Standby/On Switch: This is an electrical switch that turns the
receiver on for playback, or leaves it in standby mode for quick turn-on Speaker/Channel Input Indicators: The box icons indicate
using this switch or the remote control. which speaker positions you have configured, and the size (frequency
range) of each speaker. When a digital audio input is used, letters will
Power Indicator: This LED has three possible modes. When main light inside the boxes to indicate which channels are present in the
power is turned off, the LED is dark and the receiver won't respond to incoming signal.
any button presses. When main power is turned on, but before the
Standby/On Switch is used, the LED turns amber and the receiver is Navigation: These buttons are used together with the following five
ready to be turned on. When the receiver is turned on, the LED buttons to make selections.
turns blue.
Tone Mode: Press this button to access the tone controls (bass and
Source Select: Press this button to select a source device, which is treble). Use the Navigation buttons to make your selections.
a component where a playback signal originates, e.g. DVD, CD, cable TV,
satellite or HDTV tuner. Speaker: Press this button to configure speaker sizes, that is, the fre-
quency-range capability of each speaker.
Source Indicators: The name of the current source input lights up.
The indicated input changes each time the Source Select button is Channel Level Adjust: Press this button to set the output levels for
pressed. each channel so that all speakers sound equally loud at the listening
position.
Volume Knob: Turn this knob to raise or lower the volume, which will
be shown in decibels (dB) in the Message Display. Digital Input Select: Press this button to select the specific digital
audio input (or analog audio input) you used for the current source.
Message Display: Various messages appear in this two-line display
in response to commands. When the on-screen display menu system Delay: Press this button to set delay times that compensate for placing
(OSD) is in use, the message OSD ON will appear to remind you to the speakers at different distances from the listening position.
check the video display.
Tuner Band: Press this button to select the tuner as the source, or to
switch between the AM and FM bands.
Tuning: Press either side of this button to tune a radio station.
Tuning Mode: This button toggles between manual (one frequency
step at a time) and automatic (seeks frequencies with acceptable signal
strength) tuning mode. It also toggles between stereo and mono modes
when an FM station is tuned.
Preset Stations: Press this button to select a preset radio station.
Headphone Jack: Plug a 1/4" headphone plug into this jack for
private listening.
Surround Mode: Press this button to select a type of surround
sound (e.g. multichannel) mode. Choose from the Dolby modes, DTS
modes, Logic 7 modes, DSP modes or Stereo modes.
Surround Select: After you have selected the desired type of sur-
round mode, press this button to select a specific variant of that type
of mode.
Surround Mode Indicators: One or more of these icons may light
up as you select different surround modes. The Message Display also
indicates the surround mode.




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AVR145 harman/kardon


Source Digital Input
Speaker Size Tone Mode Message Display Indicators Select
Setup
Channel Level Navigation Surround Mode Indicators Speaker/Channel Delay Volume
Adjust Input Indicators




Power Surround Tuning Preset Stations Headphone Digital
Jack Analog Audio
Indicator Mode Audio Inputs
Inputs
Standby/On Main Power Surround Tuner Band Source Tuning Video Inputs
Switch Switch Select Select Mode


NOTE: To make it easier to follow the instructions throughout the manual that refer to this illustration, a copy of this page may be downloaded from the Product Support section at
www.harmankardon.com



7
AVR145 harman/kardon

REAR-PANEL CONNECTIONS
AM and FM Antenna Terminals: Connect the included AM and The Bridge/DMP Input: Connect the optional Harman Kardon
FM antennas to their respective terminals for radio reception. The
Bridgeto this input for use with your iPod (not included). Make
TM




sure the receiver is turned off (in Standby mode) when connecting
Front, Center and Surround Speaker Outputs: Use two-con- The Bridge.
ductor speaker wire to connect each set of terminals to the correct
speaker. Remember to observe the correct polarity (positive and nega- 6-Channel Inputs: Connect the analog audio outputs of a DVD-
tive connections). Always connect the positive lead to the colored termi- Audio, SACDTM, Blu-ray DiscTM or HD-DVDTM player (or any other external
nal on the receiver and the red terminal on the speaker. Connect the decoder) to these jacks to enjoy these proprietary formats.
negative lead to the black terminal on both the receiver and the speaker.
See the Connections section for more information on connecting your Component Video Inputs: If both your video source (e.g., DVD
speakers. player or HDTV tuner) and your television or video display have analog
component video (Y/Pb/Pr) capability, then you may connect the com-
Subwoofer Output: If you have a powered subwoofer, connect it to ponent video outputs of your source to one of the two component video
this jack. inputs. Do not make any other video connections to that source.
Video 1, Video 2 and DVD Audio/Video Inputs: These jacks Component Video Monitor Outputs: If you are using one or
may be used to connect your video-capable source components (e.g., both of the Component Video Inputs and your television or video display
VCR, DVD player, cable TV box) to the receiver. Remember to use only is component-video-capable, you may connect these jacks to the corre-
one type of video connection for each source. See the Connections sponding inputs on your video display. You will also need to connect the
section for more information on audio and video connection options for composite and/or S-video monitor outputs to your video display if some
each source component. of your sources use those types of video connections.
Video 1 Audio/Video Outputs: These jacks may be used to con- RS-232 Serial Port: This specialized connector may be used with
nect your VCR or another recorder. your personal computer in case Harman Kardon offers a software
upgrade for the receiver at some time in the future.
Composite and S-Video Monitor Outputs: If some of your
sources use composite or S-video connections, then you will need to RS-232 Mode: Leave this switch popped out in the Operate position
connect one or both of these monitor outputs to the corresponding unless the AVR 145 is being upgraded.
inputs on your television or video display in order to view the sources.
RS-232 Reset: This switch is only used during a software upgrade.
CD and Tape Audio Inputs: These jacks may be used to connect A standard processor reset is performed by pressing and holding the
your audio-only source components (e.g., CD player, tape deck). Do not front-panel Tone button.
connect a turntable to these jacks unless you are using the turntable
with a phono preamp. Switched AC Accessory Outlet: You may plug the AC power
cord of one source device into this outlet, and it will turn on whenever
Tape Outputs: These jacks may be used to connect your CDR or you turn on the receiver. Do not use a source that consumes more than
another audio-only recorder. 50 watts of power.
Coaxial and Optical Digital Audio Inputs: If your source has AC Power Cord: After you have made all other connections, plug the
a compatible digital audio output, connect it to one of these jacks for AC power cord into an unswitched outlet.
improved audio performance. Remember to use only one type of digital
audio connection for each source.
Coaxial and Optical Digital Audio Outputs: If your source is
also an audio recorder, you may connect a compatible digital audio out-
put to the recorder's input for improved recording quality.




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AVR145 harman/kardon
10


Video 2 Video 1 Video
A/V A/V Monitor Component Video Coaxial Digital RS-232 AC Power
FM Antenna Inputs Inputs Outputs Monitor Outputs Audio Inputs Serial Port Cord
(1 & 2)
Video 1
A/V DVD A/V Component Video The Bridge/ RS-232 RS-232
AM Antenna Outputs Inputs Inputs (1 & 2) DMP Input Reset Mode




CD Tape Front Surround Center Optical Digital
Inputs Inputs Speaker Speaker Speaker Audio Output
Outputs Outputs Outputs
Tape Subwoofer 6-Channel Coaxial Digital Switched AC Optical Digital
Outputs Output Inputs Audio Output Accessory Audio Inputs (1 & 2)
Outlet


NOTE: To make it easier to follow the instructions throughout the manual that refer to this illustration, a copy of this page may be downloaded from the Product Support section at
www.harmankardon.com


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AVR145 harman/kardon

REMOTE CONTROL FUNCTIONS
The AVR 145 remote is capable of controlling nine devices, including Mute Button: Press this button to mute the AVR 145's speaker and
the AVR itself and an iPod docked in the optional The Bridge accessory. headphones outputs temporarily. To end the muting, press this button
During the installation process, you may program the codes for each of or adjust the volume. Muting is also canceled when the receiver is
your source components into the remote. Each time you wish to use the turned off.
codes for any component, you will need to first press the Selector but-
ton for that component. This changes the button functions to the appro- Program/EzSet Indicator: This LED lights up or flashes in one of
priate codes for that product. three colors as the remote is programmed with codes, and during the EzSet
procedure.
Each Input Selector has been preprogrammed to control certain types
of components, with only the codes specific to each brand and model Power Off Button: Press this button to turn off the AVR 145 or
changing, depending on which product code is programmed. The another device.
device types programmed into each selector may not be changed. AVR Selector: Press this button to switch the remote to the codes
DVD: Controls DVD players and recorders. that operate the receiver.

CD: Controls CD players and recorders. Input Selectors: Press one of these buttons to select a source
device, which is a component where a playback signal originates, e.g.,
Tape: Controls cassette decks. DVD, CD, cable TV, satellite or HDTV tuner. This will also turn on the
receiver and switch the remote to the codes that operate the source
Video 1: Controls VCRs, TiVo and DVRs. device.
Video 2: Controls cable and satellite television set-top boxes. AM/FM Button: Press this button to select the tuner as the source,
Video 3: Controls televisions and other video displays. or to switch between the AM and FM bands.
The Bridge/DMP: Controls an iPod docked in The Bridge. 6-Channel Input Selector: Press this button to select the 6-
Channel Inputs as the audio source. The receiver will use the video input
For example, if you have inserted a disc in your CD player and Iyou and remote control codes for the last-selected video source.
would like to skip ahead three tracks, but you then find that the volume
is too loud, you would follow this procedure: EzSet (SPL) Button: Press this button to run the EzSet output-level
calibration procedure. Make sure to point the remote toward the receiver
1. Press the CD Input Selector to switch to the codes that control your during EzSet.
CD player.
The Bridge/DMP Selector: Press this button to select an iPod
2. Press the Play Button (in the Transport Controls section) if the disc is docked in the optional The Bridge as the audio source. The remote will
not already playing. switch to the codes that operate the iPod.
3. Press the Skip Up Button three times to advance three tracks. Test Tone: Press this button to activate the test tone for manual out-
4. Press the AVR Button so that you can access the Volume Controls. put-level calibration.

5. Press the Volume Down Button until the volume level is satisfactory. TV/Video: This button has no effect on the receiver, but is used to
switch video inputs on some video source components.
Any given button may have different functions, depending on which
component is being controlled. Some buttons are labeled with these Sleep Button: Press this button to activate the sleep timer, which
functions. For example, the Sleep and DSP Surround Buttons are shuts off the receiver after a programmed period of time of up to
labeled for use as Channel Up/Down Buttons when controlling a televi- 90 minutes.
sion or cable box. See Table A8 in the appendix for listings of the Volume Controls: Press these buttons to raise or lower the volume,
different functions for each type of component. which will be shown in decibels (dB) in the Message Display.
IR Transmitter Lens: As buttons are pressed on the remote, DSP Surround: Press this button to select a DSP surround mode
infrared codes are emitted through this lens. Make sure it is pointing (Hall 1, Hall 2, Theater).
toward the component being operated.
On-Screen Display (OSD): Press this button to activate the on-
EzSetTM Microphone: This microphone "hears" the test tone used screen menu system.
during the EzSet level-setting procedure. Make sure it is pointing toward
the receiver when running EzSet. Channel Level: Press this button to set the output levels for each
channel so that all speakers sound equally loud at the listening position.
Power On Button: Press this button to turn on the AVR or another Usually this is done while playing an audio selection, such as a favorite CD,
device. The Master Power Switch on the AVR 145's front panel must after you have calibrated the levels using EzSet, as described in the Getting
first have been switched on. Started section.

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AVR145 harman/kardon

REMOTE CONTROL FUNCTIONS
Speaker Setup: Press this button to configure speaker sizes, that is, Surround Mode Selectors: Press any of these buttons to select
the frequency-range capability of each speaker. Usually this is done a type of surround sound (e.g., multichannel) mode. Choose from the
using the on-screen menu system, as described in the Getting Started Dolby modes, DTS modes, Logic 7 modes or Stereo modes. Each
section. press of a button will cycle to the next available variant of that mode.
Not all modes or mode groups are available with all sources.
Navigation and Set Buttons: These buttons are used together to
make selections within the on-screen menu system, or when accessing Night Mode: Press this button to activate Night mode with specially
the functions of the four buttons surrounding this area of the remote ­ encoded Dolby Digital discs or broadcasts. Night mode compresses the
Channel Level, Speaker Setup, Digital Input or Delay. audio so that louder passages are reduced in volume to avoid disturbing
others, while dialogue remains intelligible.
Digital Input Select: Press this button to select the specific digital
audio input (or analog audio input) you used for the current source. Track Skip: These buttons have no effect on the receiver, but are
used with many source components to change tracks or chapters.
Delay: Press this button to set delay times that compensate for placing
the speakers at different distances from the listening position, or to Dim: Press this button to partially or fully dim the front-panel display.
resolve a "lip sync" issue that may be caused by digital video process-
ing. This is done using the on-screen menu system, as described in the Transport Controls: These buttons have no effect on the receiver,
Initial Setup section. but are used to control many source components. By default, when the
remote is operating the receiver, these buttons will control a DVD player.
Numeric Keys: Use these buttons to enter radio station frequencies
when using the tuner (after pressing the Direct Button), or to select station
presets.
Tuning Mode: This button toggles between manual (one frequency
step at a time) and automatic (seeks frequencies with acceptable signal
strength) tuning mode. It also toggles between stereo and mono modes
when an FM station is tuned.
Memory: After you have tuned a particular radio station, press this
button, then the numeric keys, to save that station as a radio preset.
Tuning: Press these buttons to tune a radio station. Depending on
whether the tuning mode has been set to manual or automatic, each
press will either change one frequency step at a time, or seek the next
frequency with acceptable signal strength.
Direct: Press this button before using the Numeric Keys to directly
enter a radio station frequency.
Clear: Press this button to clear a radio station frequency you have
started to enter.
Preset Stations Selector: Press these buttons to select a preset
radio station.
Tone Mode: Press this button to access the tone controls (bass and
treble). Use the Navigation buttons to make your selections.
Disc Skip: This button has no effect on the receiver, but is used with
some optical disc changers to skip to the next disc.
Macros: These buttons may be programmed to execute long com-
mand sequences with a single button press. They are useful for pro-
gramming the command to turn on or off all of your components, or for
accessing specialized functions for a different component than you are
currently operating.




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AVR145 harman/kardon

EzSet Microphone
IR Transmitter Lens

Power On Mute
Program/EzSet Indicator Power Off
AVR Selector Input Selectors

AM/FM 6-Channel Input Selector
EzSet (SPL) The
Bridge /DMP Selector
TM




Test Tone TV/Video
Sleep
Volume Control
DSP Surround
On-Screen Display Not Used

Channel Level Speaker Setup


Set
Digital Input
Delay


Numeric Keys


Tuning Mode Memory
Direct Station Entry Clear
Tuning Preset Stations Selectors
Tone Mode Disc Skip
Macros

Surround Mode Selectors
Night Mode
Dim
Track Skip
Transport Controls




145
NOTE: To make it easier to follow the instruc-
tions throughout the manual that refer to this
illustration, a copy of this page may be down-
loaded from the Product Support section at
www.harmankardon.com

12
AVR145 harman/kardon

CONNECTIONS
There are different types of audio and video connections used to con- Bare wire cables are installed as follows:
nect the receiver to the speakers and video display, and to connect
the source devices to the receiver. To make it easier to keep them all 1. Unscrew the terminal cap until the pass-through hole in the collar is
straight, the Consumer Electronics Association (CEA) has established a revealed.
color-coding standard. Table 1 may be helpful to you as a reference 2. Insert the bare end of the wire into the hole.
while you set up your system.
3. Screw the cap back into place until the wire is held snugly.
Audio Connections
Left Right
Front (FL/FR)
Center (C)
Surround (SL/SR)
Subwoofer (SUB)
Surround Back (SBL/SBR)
1 2 3
Digital Audio Connections Figure 2 ­ Binding-Post Speaker Terminals With Bare Wires
Coaxial
Optical Input Output Subwoofer
Video Connections
Component Y Pb Pr
The subwoofer is a specialized type of loudspeaker that is usually con-
Composite nected in a different way. The subwoofer is used to play only the low
S-Video frequencies (bass), which require much more power than the other
Table 1­ Connection Color Guide speaker channels. In order to obtain the best results, most speaker
manufacturers offer powered subwoofers, in which the speaker contains
Types of Cables its own amplifier on board. Sometimes the subwoofer is connected to
the receiver using the front left and right speaker outputs, and then the
This section will briefly review different types of cables and connections front left and right speakers are connected to terminals on the sub-
that you may use to set up your system. woofer. More often, a line-level (nonamplified) connection is made
from the receiver's Subwoofer Output to a corresponding jack on the
Speaker Cables subwoofer.
Speaker cables carry an amplified signal from the receiver's speaker ter- Although the subwoofer output looks similar to the analog audio jacks
minals to each loudspeaker. Speaker cables generally contain two wire used for the various components, it is filtered and only allows the low
conductors, or leads, inside plastic insulation. The two conductors are frequencies to pass. Don't connect this output to your other devices.
usually differentiated in some way, by using different colors, or stripes, or Although doing so won't cause any harm, performance will suffer.
even by adding a ridge to the insulation. Sometimes the actual wires are
different, one being copper red and the other silver.
The differentiation is important because each speaker must be connect- Pre-out Subwoofer
ed to the receiver's speaker-output terminals using two wires, one posi-
Figure 3 ­ Subwoofer
tive (+) and one negative (­). This is called speaker polarity. It's impor-
tant to maintain the proper polarity for all speakers in the system. If Connecting Source Devices to the AVR
some speakers have their negative terminals connected to the receiver's
positive terminals, performance can suffer, especially for the low fre- The AVR 145 is designed to process audio and video input signals,
quencies. playing back the audio and displaying the video on a television or moni-
tor connected to the AVR. These signals originate in what are known as
Always connect the positive terminal on the loudspeaker, which is usually "source devices," including your DVD player, CD player, DVR (digital
colored red, to the positive terminal on the receiver, which is colored as video recorder) or other recorder, tape deck, game console, cable or
shown in the Connection Color Guide (Table 1). Similarly, always con- satellite television box or MP3 player. Although the tuner is built into the
nect the black negative terminal on the speaker to the black negative AVR, it also counts as a source, even though no external connections
terminal on the receiver. are needed, other than the FM and AM antennas.
The AVR 145 uses binding-post speaker In general, separate connections are required for the audio and video
terminals that can accept banana plugs portions of the signal. The types of connections used depend upon
+
or bare-wire cables. what's available on the source device, and for video signals, the capabili-
Banana plugs are simply plugged into the ties of your video display.
hole in the middle of the terminal cap.
Figure 1 ­ Binding-Post Speaker
Terminals With Banana Plugs

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AVR145 harman/kardon

CONNECTIONS
Audio Connections Multichannel analog connections are used with advanced sources where
the digital content is copy-protected and all surround processing is per-
There are two formats for audio connections: digital and analog. Digital formed inside the source. These types of connections are usually used
audio signals are of higher quality, and are required for listening to with DVD-Audio, SACD, Blu-ray Disc, HD-DVD and other advanced
sources encoded with digital surround modes, such as Dolby Digital and players.
DTS. There are two types of digital audio connections commonly used:
coaxial and optical. Either type of digital audio connection may be used
for each source device, but never both simultaneously for the same Front Surround Center
source. However, it's okay to make both analog and digital audio con- Multichannel
nections at the same time to the same source. analog audio
cable (RCA)
Digital Audio Subwoofer
Coaxial digital audio jacks are usually color-coded in orange. Although
they look similar to analog jacks, they should not be confused, and you Figure 7 ­ Multichannel Analog Audio
should not connect coaxial digital audio outputs to analog inputs or
vice versa.
Figure 8 ­ The Bridge
Coaxial digital Coaxial Harman Kardon receivers also include a proprietary, dedicated audio
audio cable
connection called "The Bridge/DMP". If you own an iPod with a dock
Figure 4 ­ Coaxial Digital Audio connector, you may separately purchase The Bridge and connect it to
Optical digital audio connectors are normally covered by a shutter to The Bridge/DMP port on the receiver. Dock your iPod (not included) in
protect them from dust. The shutter opens as the cable is inserted. Input The Bridge, and you may listen to your materials through your high-per-
connectors are color-coded using a black shutter, while outputs use a formance audio system. You may even use the AVR 145 remote to
gray shutter. control the iPod, with navigation messages displayed on the front panel
and on the screen of a video display connected to the AVR.
Optical
Optical digital
Video Connections
audio cable
Figure 5 ­ Optical Digital Audio Although some sources produce an audio signal only (e.g., CD player,
tape deck), many sources output both audio and video signals (e.g.,
Due to the nature of digital signals as binary bits, they aren't subject
DVD player, cable television box, HDTV tuner, satellite box, VCR, DVR).
to signal degradation the way analog signals are. Therefore, the quality
In addition to the audio connection, you will need to connect one type of
of coaxial and optical digital audio connections should be the same,
video connection for each source (never more than one at the same
although it is important to limit the length of the cable. Whichever type of
time for any source).
connection you choose, Harman Kardon recommends that you always
select the highest quality cables available within your budget. There are three types of analog video connections: composite video,
S-video and component video.
Analog Audio
Composite video is the basic connection most commonly available. The
Analog connections require two cables, one for the left channel (white) jack is usually color-coded yellow, and looks like an analog audio jack,
and one for the right channel (red). These two cables are often attached although it is important never to confuse the two. Do not connect a
to each other for most of their length. Most sources that have digital composite video jack to an analog or coaxial digital audio jack, and vice
audio jacks also have analog audio jacks, although some older types of versa. Both the chrominance (color) and luminance (intensity) compo-
sources, such as tape decks, have only analog jacks. For sources that nents of the video signal are transmitted using a single cable.
are capable of both digital and analog audio, you may wish to make
both connections. If you wish to record materials from DVDs or other Composite
copy-protected sources, you may only be able to do so using analog video cable
connections. Remember to comply with all laws regarding copyright if Figure 9 ­ Composite Video
you choose to make a copy for your own personal use.

Analog audio L
cable (RCA) R
Figure 6 ­ Analog Audio




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AVR145 harman/kardon

CONNECTIONS
S-video, or "separate" video, transmits the chrominance and luminance
components using separate wires contained within a single cable. The
plug on an S-video cable contains four metal pins, plus a plastic guide
pin. Be careful to line up the plug correctly when you insert it into the
jack on the receiver, source or video display.
Composite
video cable
Figure 10 ­ S-Video

Component video separates the video signal into three components ­
one luminance ("Y") and two subsampled color signals ("Pb" and "Pr") ­
that are transmitted using three separate cables. The "Y" cable is color-
coded green, the "Pb" cable is colored blue and the "Pr" cable is col-
ored red.


Component
video cable

Figure 11 ­ Component Video

If it's available on your video display, component video is recom-
mended as the best quality connection, followed by S-video and then
composite video.

Antennas
The AVR 145 uses separate terminals for the included FM and AM
antennas that provide proper reception for the tuner.
The FM antenna uses a 75-ohm F-connector.




Figure 12 ­ FM Antenna

The AM loop antenna needs to be assembled. Then connect the two
leads to the screw terminals on the receiver.




Figure 13 ­ AM Antenna

RS-232 Serial Port
The RS-232 serial port on the AVR 145 is used only for data. If
Harman Kardon releases a software upgrade for the receiver's operating
system at some time in the future, the upgrade may be downloaded
to the AVR using this port. Complete instructions will be provided at
that time.
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AVR145 harman/kardon

INSTALLATION
You are now ready to connect your various components to your receiver. Step Three ­ Connect the Antennas
Before beginning, make sure that all components, including the AVR 145,
are turned completely off and their power cords are unplugged. Don't Connect the FM and AM antennas to their terminals.
plug any of the power cords back in until you have finished
making all of your connections.
Remember that your receiver generates heat while it is playing. Select a
location that leaves several inches of space on all sides of the receiver. It
is preferable to avoid completely enclosing the receiver inside a cabinet.
It is also preferable to stack components on separate shelves rather AVR 145
than directly on top of the receiver. Some surface finishes are delicate.
Try to select a location with a sturdy surface finish.

Step One ­ Connect the Speakers
If you have not yet done so, place your speakers in the listening room
as described in the Speaker Placement section above.
AM

Connect the center, front left, front right, surround left and surround right FM
loudspeakers to the corresponding speaker terminals on the AVR 145.
Remember to maintain the proper polarity by always connecting the
positive and negative terminals on each speaker to the positive and
negative terminals on the receiver. Use the Connection Color Guide
on page 15 as a reference. Figure 17 ­ Antenna Connections

Step Four ­ Connect the Source Components
AVR 145
AVR 145
Use the worksheets in the Appendix to note which connections you will
C use for each of your source devices.
For each source, select a source input (Video 1, Video 2, Video 3, etc.).
In Table 2 we recommend connecting certain types of sources to certain
source inputs to make it easier to program and use the remote control.

FR FL SR SL
Decide which audio connections you will use. If your source device has
them, use either the coaxial digital or the optical digital audio connec-
Figure 15 ­ Speaker Connections tion. Referring to Table 2, we recommend you connect the DVD source
to the Coaxial 1 input jack, and the source designated Video 2 to the
Step Two ­ Connect the Subwoofer Optical 2 input jack. However, you may make whatever connections are
Connect the Subwoofer Output on the AVR 145 to the line-level input on best for your system.
your subwoofer. Consult the manufacturer's guide for the subwoofer for
In addition to the digital audio connections, we recommend that you
additional information.
connect the analog audio connections for each source, as a backup to
the digital connections. For sources that don't have digital audio outputs,
you must use the analog audio connections.
For each video source, select one type of video connection. Component
video is preferred, but both your source device and your video display
must have this type of video capability. If either device does not, then
use S-video. Again, if either your source device or your video display
AVR 145
doesn't have S-video connections, then use composite video.
Referring to Table 2, we recommend that you connect the DVD source
SUB to the Component Video 1 inputs, and any one source designated as
Video 1, Video 2 or Video 3 to the Component Video 2 inputs. However,
Figure 16 ­ Subwoofer Connection you may make whatever video connections are best for your system.



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AVR145 harman/kardon

INSTALLATION
We recommend connecting your various sources using the connections
shown in Table 2 below in order to simplify programming your receiver
NOTE: It's possible for a source to use none of the connections and remote control. However, you may connect any device to any
named for that source. For example, you might connect your source input.
DVD player to the Component Video 1 inputs and the Coax 1
digital audio input. However, we will refer to this source as
"DVD", and in Step Five of the Initial Setup section you will pro-
gram the receiver so that these connections are assigned to the
DVD source. When you select "DVD" as your source using the
front panel or the remote, the correct connections for your DVD
player will be used.

Device Type AVR 145 Source Input Audio Connections Video Connections
VCR, DVR, PVR, Video 1 · Video 1 Analog (inputs and outputs) · One of component Video 2, Video 1 S-video
TiVo or other and or Video 1 composite video
audio/video recorder · Either Coax 2 or Optical 2, with · For recording, use Video 1 S-video or
corresponding coax or optical digital composite video output, and do not use
output component video connections at all
Cable TV, Satellite, Video 2 · Video 2 Analog and · One of component Video 2, Video 2
HDTV or other · Optical 1 S-video, Video 2 composite video
device that delivers
television programs
TV, game console, Video 3 (front-panel jacks) · Video 3 Analog and · One of component Video 2, Video 3 S-video
camera or other · Either Coax 3 or Optical 3 or Video 3 composite video
audio/video device
DVD Audio/Video, DVD · DVD Analog · Component Video 1
SACD HD-DVD, · 6-Channel inputs (optional) and
Blu-ray Disc · Coax 1
CD player CD · CD Analog and · Not required
· Either Coax 2 or Optical 2
CDR, MiniDisc, Tape · Tape Analog (inputs and outputs) and · Not required
cassette