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harman/kardon

AVR125
A/V DOLBY DIGITAL RECEIVER

SERVICE MANUAL

CONTENTS
ESD WARNING......................................2 DISASSEMBLY PROCEDURE...............18
LEAKAGE TESTING.................................3 AMPLIFIER BIAS ADJUSTMENT............21
BASIC SPECIFICATIONS.........................4 BLOCK DIAGRAM...............................22
FRONT PANEL CONTROLS.....................5 IC PINOUTS.......................................23
FRONT PANEL DISPLAY.........................7 TRANSISTOR PINOUTS.......................52
REAR PANEL CONNECTIONS..................9 ELECTRICAL PARTS LIST....................53
REMOTE CONTROL FUNCTIONS.............11 PCB DRAWINGS................................62
INSTALLATION AND CONNECTIONS........14 SCHEMATICS....................................70
TROUBLESHOOTING GUIDE..................16 WIRING DIAGRAM..............................82
MICROPROCESSOR RESET...................16 PACKAGING......................................83
UNIT EXPLODED VIEW..........................17

harman/kardon, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797 Rev5 2/2005
AVR125 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.

2
AVR125 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.

3
AVR125 harman/kardon

Audio Section FM Tuner Section
Stereo Mode Frequency Range 87.5�108.0MHz
Continuous Average Power (FTC) Usable Sensitivity IHF 1.3�V/13.2dBf
55 Watts per channel, @ < 0.07% THD, 20Hz � 20kHz, Signal-to-Noise Ratio Mono/Stereo 70dB/68dB
both channels driven into 8 ohms Distortion Mono/Stereo 0.2%/0.3%
Stereo Separation 40dB @ 1kHz
Five-Channel Surround Modes Selectivity �400kHz, 70dB
Power Per Individual Channel Image Rejection 80dB
Front L&R channels: IF Rejection 90dB
45 Watts per channel
@ < 0.07% THD, 20Hz�20kHz into 8 ohms AM Tuner Section
Center channel: Frequency Range 520�1710kHz
45 Watts @ < 0.07% THD, 20Hz�20kHz into 8 ohms Signal-to-Noise Ratio 45dB
Surround channels: Usable Sensitivity Loop 500�V
45 Watts per channel Distortion 1kHz, 50% Mod 0.8%
@ < 0.07% THD, 20Hz�20kHz into 8 ohms Selectivity �10kHz, 30dB

Input Sensitivity/Impedance
Linear (High-Level) 200mV/47k ohms Video Section
Television Format NTSC
Signal-to-Noise Ratio (IHF-A) 95dB Input Level/Impedance 1Vp-p/75 ohms
Surround System Adjacent Channel Separation Output Level/Impedance 1Vp-p/75 ohms
Pro Logic II 45dB Video Frequency
Dolby Digital (AC-3) 55dB Response 10Hz�8MHz (�3dB)
DTS 55dB
Frequency Response General
@ 1W (+0dB, �3dB) 10Hz�100kHz Power Requirement AC 125V/60Hz
Power Consumption 68W idle, 540W maximum
High Instantaneous (2 channels driven)
Current Capability (HCC) �25 Amps
Dimensions
Transient Intermodulation Width 17.3 inches (440mm)
Distortion (TIM) Unmeasurable Height 6.6 inches (168mm)
Slew Rate 40V/�sec 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.
Dolby, Pro Logic II, AC-3 and the Double-D symbol are
trademarks of Dolby Laboratories. Confidential Unpublished
Works. �1992�1999 Dolby Laboratories, Inc. All rights reserved.

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.

4 TECHNICAL SPECIFICATIONS 4
AVR125 harman/kardon

FRONT-PANEL CONTROLS

29 i � � �
30 ^ � �

AVR 125

dB

�

(
AM/FM
*
1 &
2

4 6 8 ) @ $ ^
3 5 7 9 ! # %

1 Main Power Switch ! Input Source Selector � Set Button
2 System Power Control @ Tuning Mode Selector Input Indicators
3 Power Indicator # Digital Optical 3 Input � Delay
4 Headphone Jack $ Digital Coax 3 Input � Digital Input Selector
5 Selector Buttons % Video 3 Video Input Jacks � Main Information Display
6 Tone Mode ^ Video 3 Audio Input Jacks � Channel Select Button
7 Surround Mode Selector & Bass Control i Speaker Select Button
8 Tuning Selector * Balance Control ^ Test Tone Selector
9 AM/FM Selector ( Treble Control ~ Surround Mode Indicators
) Preset Stations Selector � Volume Control � Remote Sensor Window

1 Main Power Switch: Press this button to apply in operation, the indicator will turn green. Should the settings of the Bass & and Treble ( controls may
power to the AVR 125. When the switch is pressed indicator turn red, turn the unit off using the Main be used to adjust the output signals. When the button
in, the unit is placed in a Standby mode, as indicated Power Switch 1 and check the speaker wire con- is pressed once or twice so that the words TONE
by the amber LED 3 surrounding the System nections to make certain that there are no short OUT appear in the Main Information Display �,
Power Control 2. This button MUST be pressed in circuits. the output signal will be "flat, without any bass or tre-
"
to operate the unit. To turn the unit off and prevent ble alteration, no matter how the actual Bass and
the use of the remote control, this switch should be 4 Headphone Jack: This jack may be used to listen Treble Controls &( are adjusted.
pressed until it pops out from the front panel so that to the AVR 125's output through a pair of headphones.
the word "OFF" may be read at the top of the switch. Be certain that the headphones have a standard 1/4" 7 Surround Mode Selector: Press this button to
stereo phone plug. The speakers will automatically be change the surround mode by scrolling through the list
NOTE: This switch is normally left in the "ON" position. turned off when the headphone jack is in use. of available modes. Depending on the type of input,
some modes are not always available. (See page 22
2 System Power Control: When the Main Power 5 Selector Buttons: When you are establishing the for more information about surround modes.)
Switch 1 is "ON," press this button to turn on the AVR 125's configuration settings, use these buttons to
AVR 125; press it again to turn the unit off. Note that select from the choices available, as shown in the Main 8 Tuning Selector: Press the left side of the button
the Power Indicator 3 surrounding the switch will Information Display �. to tune lower-frequency stations and the right side of
turn green when the unit is on. the button to tune higher-frequency stations. When a
6 Tone Mode: Pressing this button enables or dis- station with a strong signal is reached, the TUNED
3 Power Indicator: This LED will be illuminated in ables the Bass and Treble tone controls. When the Indicator Q will be illuminated in the Main
amber when the unit is in the Standby mode to signal button is pressed so that the words TONE IN Information Display � .
that the unit is ready to be turned on. When the unit is appear in the Main Information Display �, the

5 FRONT-PANEL CONTROLS 5
AVR125 harman/kardon

FRONT-PANEL CONTROLS

In Manual tuning mode, tap the button lightly and note % Video 3 Video Input Jacks: These jacks may be the receiver. (See pages 7�8 for a complete explana-
that the tuner will step up one frequency increment per used for temporary connection to the composite or S- tion of the Information Display.)
button press. When the button is held for a few sec- Video output of video games, camcorders or other
onds you will note that the unit will quickly advance portable video products. � Channel Select Button: Press this button to
through the frequency band. Release it and the tuner begin the process of trimming the channel output lev-
will stop. In Auto tuning mode, each press of the but- ^ Video 3 Audio Input Jacks: These audio jacks els using an external audio source. (For more informa-
ton will search for the next station with an acceptable may be used for temporary connection to video tion on output level trim adjustment, see page 25.)
signal. Press and hold the button to skip through the games or portable audio/video products such as cam-
corders and portable audio players. i Speaker Select Button: Press this button to
acceptable stations. When the button is released, the
begin the process of configuring the unit to match the
tuner will not stop until it reaches a station with an
acceptable frequency. & Bass Control: Turn this control to modify the low- type of speakers used in your listening room. (See
frequency output of the left/right channels by as much as pages 16�19 for more information on speaker setup
To switch back and forth between the Auto and �10dB, when the unit is in the "Surround Off" mode. Set and configuration.)
Manual tuning modes, press the Tuning Mode this control to a suitable position for your taste or room
acoustics. ^ Test Tone Selector: Press this button to begin
Selector @.
the process of adjusting the channel output levels
9 AM/FM Selector: Pressing this button will auto- * Balance Control: Turn this control to change the using the internal test tone as a reference. (For more
relative volume for the front left/right channels. information on output level adjustment, see page 18.)
matically switch the AVR 125 to the Tuner mode.
Pressing it again will switch between the AM and FM NOTE: For proper operation of the surround modes ~ Surround Mode Indicators: A green LED will
frequency bands. (See page 25 for more information this control should be at the midpoint or "12 o'clock" light in front of the surround mode that is currently
on the tuner.) position. in use.
) Preset Stations Selector: Press this button to ( Treble Control: Turn this control to modify the high � Remote Sensor Window: The sensor behind
scroll up or down through the list of stations that have frequency output of the left/right channels by as much as this window receives infrared signals from the remote
been entered into the preset memory. (See page 25 �10dB, when the unit is in the "Surround Off" mode. Set control. Aim the remote at this area and do not block
for more information on tuner presets.) this control to a suitable position for your taste or room or cover it.
! Input Source Selector: Press this button to acoustics.
change the input by scrolling up or down through the � Volume Control: Turn this knob clockwise to
list of Input Indicators . increase the volume, counterclockwise to decrease the
@ Tuning Mode Selector: Press this button to select volume. If the AVR 125 is muted, adjusting the
Auto or Manual tuning. When the button is pressed so Volume Control � 33 will automatically release
that the AUTO Indicator R lights, the tuner will search the unit from the silenced condition.
for the next station with an acceptable signal when the � Set Button: When making choices during the
Tuning Selector 8u is pressed. When the button setup and configuration process, press this button
is pressed so that the AUTO Indicator R is not lit, to enter the desired setting as shown in the Main
each press of the Tuning Selector 8u will Information Display � into the AVR 125's memory.
increase the frequency. This button may also be used to The set button may also be used to change the display
switch between Stereo and Mono modes for FM radio brightness. (See page 26.)
reception. When weak reception is encountered, press
the button until the STEREO Indicator P goes out to Input Indicators: A green LED will light in front of
switch to Mono reception. Press and hold again to the input that is currently being used as the source for
switch back to STEREO mode. (See page 25 for more the AVR 125.
information on using the tuner.)
� Delay: Press this button to begin the sequence
# Digital Optical 3 Input: Connect the optical digital of steps required to enter delay time settings. (See
audio output of an audio or video product to this jack. page 19 for more information on delay times.)
When the input is not in use, be certain to keep the
plastic cap installed to avoid dust contamination that � Digital Input Selector: When playing a source
might degrade future performance. that has a digital output, press this button to select
between the Optical #c and Coaxial $�
$ Digital Coax 3 Input: This jack is used for con- Digital inputs or to select the source's analog input.
nection to the output of portable audio devices, video (See pages 23�25 for more information on digital
game consoles or other products that have a coax audio.)
digital audio jack.
� Main Information Display: This display delivers
messages and status indications to help you operate

6 FRONT-PANEL CONTROLS 6
AVR125 harman/kardon

FRONT-PANEL INFORMATION DISPLAY

U T S R Q PO NM L K

DTS D OPT 123 COAX 123 ANALOG AUTO TUNED ST MEM PRESET
L C R
A dB SLEEP
NIGHT
KHz
SL LFE SR
PCM MHz
D PL II 3ST DSP VMAx NF LOGIC 7 CM

B C D E F G H I J

A Bitstream Indicators I Logic 7 Mode Indicators Q Tuned Indicator
B DTS Mode Indicator J Preset Number/Sleep Timer R Auto Indicator
C Dolby Digital Indicator K Night Mode Indicator S Analog Input Indicator
D Dolby Pro Logic II Indicator L Speaker/Channel Input Indicators T Coaxial Digital Input Indicators
E Dolby 3 Stereo Indicator/Stereo Indicator M Preset Indicator U Optical Digital Input Indicators
F Main Information Display N Sleep Indicator
G DSP Mode Indicator O Memory Indicator
H VMAx Mode Indicators P Stereo Indicator

A Bitstream Indicators: When the input is a digital F Main Information Display: This display shows volume levels. This mode is only available with specially
source, one of these indicators will light to display the spe- messages relating to the status, input source, surround encoded Dolby Digital sources. (See page 24 for a
cific type of data signal in use. mode, tuner, volume level or other aspects of the description of the Night Mode.)
AVR 125's operation.
B DTS Mode Indicator: This indicator lights when a L Speaker/Channel Input Indicators: These indica-
DTS-encoded source is playing and DTS Surround G DSP Mode Indicator: This indicator lights when tors are multipurpose, indicating either the speaker type
decoding is in use. any of the surround modes created by Digital Signal selected for each channel or the incoming data-signal
Processing, or DSP are in use. These modes include configuration. The left, center, right, right surround and
C Dolby Digital Indicator: This indicator lights Hall 1, Hall 2, Theater and 5-Channel Stereo. left surround speaker indicators are composed of three
when a Dolby Digital source is being played and Dolby boxes, while the subwoofer is a single box. The center
Digital surround decoding is in use. H VMAx Mode Indicators: This indicator lights when box lights when a "small" speaker is selected, and the
the VMAx mode is in use. VMAx F appears when two outer boxes light when "large" speakers are select-
D Dolby Pro Logic II Indicator: This indicator lights the Far Field VMAx mode is selected; VMAx N
when the Dolby Pro Logic II mode has been selected. ed. When none of the boxes are lit for the center, sur-
appears when the Near Field VMAx mode is selected. round or subwoofer channels, no speaker has been
� It is possible to see the Dolby Pro Logic II indicator (See page 22 for a description of the VMAx modes.) assigned to one of those positions. (See page 17 for
lit simultaneously with the Dolby Digital indicator, even I Logic 7 Mode Indicators: These indicators light more information on configuring speakers.) The letters
though the Dolby Digital surround mode has been when the Logic 7 mode is in use. LOGIC 7C ap- inside each of the center boxes display active input
selected. This is due to the specifications for Dolby pears for the Cinema version of Logic 7; LOGIC 7M channels. For standard analog inputs, only the L and R
Digital processing, which require that the Dolby appears for the Music version of Logic 7. (See page will light, indicating a stereo input. When a digital source
Pro Logic II mode be used any time a 2-channel 22 for a description of the Logic 7 modes.) is playing, the indicators will light to display the channels
Dolby signal is detected. being received at the digital input. When the letters
J Preset Number/Sleep Timer: When the tuner is flash, the digital input has been interrupted. (See pages
� If you desire 5.1-channel audio, check the audio in use, these numbers indicate the specific preset 18�19 for more information on the Channel Indicators.)
settings in the menus for both your DVD player and memory location in use. (See page 25 for more infor-
your DVD disc to make sure that a 5.1-channel Dolby mation on preset stations.) When the Sleep function is M Preset Indicator: This indicator lights when the
Digital sound track is available and has been selected. in use, these numbers show how many minutes tuner is in use to show that the Preset Number/
remain before the unit goes into the Standby mode. Sleep Timer J is showing the station's preset
E Dolby 3 Stereo Indicator/Stereo Indicator: The memory number. (See page 25 for more information
entire indicator lights when the Dolby 3 Stereo mode (See page 21 for information on the Sleep Function.)
on tuner presets.)
has been selected. When the surround modes are K Night Mode Indicator: This indicator lights when
turned off so that two-channel stereo playback is in the AVR 125 is in the Night mode, which preserves N Sleep Indicator: This indicator lights when the
use, only the "ST" indicator will light. the dynamic range of digital program material at low Sleep function is in use. The numbers in the Preset
Number/Sleep Timer Indicators will show the minutes

7 FRONT-PANEL INFORMATION DISPLAY 7
AVR125 harman/kardon

FRONT-PANEL INFORMATION DISPLAY

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

O 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.

Q Tuned Indicator: This indicator lights when a station
is being received with sufficient signal strength to pro-
vide 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.

8 FRONT-PANEL INFORMATION DISPLAY 8
AVR125 harman/kardon

REAR-PANEL CONNECTIONS

32 kig e c a� fl >
33 31 jh f db � fi

�
TM

�
�

SURR SURR
, 1A

, 0.5A

� � � � , / � <
� AM Antenna > AC Power Cord h DVD Audio Inputs
TM FM Antenna fi Optical Digital Output i Video 1 Composite Video Input
� CD Inputs fl Coaxial Digital Output j Video 1 Audio Inputs
� Tape Outputs Video Monitor S-Video Output k Video 1 Composite Video Output
Tape Inputs � DVD S-Video Input 31 Video 1 Audio Outputs
� Subwoofer Output � Coaxial Digital Inputs 32 Video 2 Composite Video Input
� Front Speaker Outputs a Video 1 S-Video Input 33 Video 2 Audio Inputs
� Surround Speaker Outputs b Video 1 S-Video Output
� Front Speaker Outputs c Optical Digital Inputs
, Surround Speaker Outputs d Video 2 S-Video Input
/ Front Speaker Outputs e 6-Channel Direct Inputs
� Switched AC Accessory Outlet f Video Monitor Composite Video Output
< Unswitched AC Accessory Outlet g DVD Composite Video Input

� AM Antenna: Connect the AM loop antenna sup- � Subwoofer Output: Connect this jack to the line- connection. (See page 14 for more information on
plied with the receiver to these terminals. If an external level input of a powered subwoofer. If an external sub- speaker polarity.)
AM antenna is used, make connections to the AM and woofer amplifier is used, connect this jack to the sub-
GND terminals in accordance with the instructions sup- woofer amplifier input. �, Surround Speaker Outputs: Connect these
plied with the antenna. outputs to the matching + or � terminals on your left
��/ Front Speaker Outputs: Connect these and right surround speakers. When making speaker
TM FM Antenna: Connect the supplied indoor or an outputs to the matching + or � terminals on your front connections always make certain to maintain correct
optional external FM antenna to this terminal. speakers. When making speaker connections, always polarity by connecting the black terminal to the nega-
make certain to maintain correct polarity by connecting tive (�) terminal on the speakers. Connect the blue
� CD Inputs: Connect these jacks to the output of a the black terminal to the negative (�) terminal on the terminal to the positive (+) terminal on the left sur-
compact disc player or CD changer. speakers. Connect the white terminal to the positive round speaker and the gray terminal to the positive
(+) terminal on the left front speaker, the red terminal (+) terminal on the right surround speaker. Newer
� Tape Outputs: Connect these jacks to the speakers may have matching color terminals in accor-
to the positive (+) terminal on the right front speaker
RECORD/INPUT jacks of an audio recorder. dance with the new CEA specifications, while existing
and the green terminal to the positive (+) terminal on
Tape Inputs: Connect these jacks to the the center front speaker. Newer speakers may have speakers typically use a red terminal for the positive
PLAY/OUT jacks of an audio recorder. matching color terminals in accordance with the new (+) speaker wire connection. (See page 14 for more
CEA specifications, while existing speakers typically information on speaker polarity.)
use a red terminal for the positive (+) speaker wire

9 REAR-PANEL CONNECTIONS 9
AVR125 harman/kardon

REAR-PANEL CONNECTIONS

� Switched AC Accessory Outlet: This outlet may d 32 Video 2 Video Inputs: Connect one of these
be used to power any device you wish to have turned jacks to the PLAY/OUT composite or S-Video jacks
on or off at the same time as the AVR 125. Any device on a TV, VCR or other video source.
connected to this outlet will be off when the AVR 125
is in the Standby mode, and power will be supplied to e 6-Channel Direct Inputs: If an external digital
the outlet when the AVR 125 is turned on. audio decoder is used, connect the outputs of that
decoder to these jacks.
< Unswitched AC Accessory Outlet: This outlet
may be used to power any AC device. The power will These jacks have been color-coded as follows to
remain on at this outlet regardless of whether the assist you in making correct channel connections:
AVR 125 is on or off. Front Left White
Front Right Red
IMPORTANT NOTE: The total power consumption of Center Green
all devices connected to the accessory outlets should Surround Left Blue
not exceed 100 watts. Do not connect power amplifiers Surround Right Gray
or other high-current draw devices to these outlets. Subwoofer Purple
> AC Power Cord: Connect the AC plug to an h DVD Audio Inputs: Connect these jacks to the
unswitched AC wall outlet. analog audio jacks on a DVD player or other source
device.
fi Optical Digital Output: Connect this jack to the
matching digital audio input connector on a digital NOTE: The default setting for the audio input associated
recorder such as a CD-R or MiniDisc recorder. with DVD is the Coaxial Digital Input 1 �. If you
connect the audio outputs of a DVD player to the ana-
fl Coaxial Digital Output: Connect this jack to the log jacks h, change the input setting as shown on
matching digital audio input connector on a digital page 20.
recorder such as a CD-R or MiniDisc recorder.
j Video 1 Audio Inputs: Connect these jacks to
f Video Monitor Outputs: Connect these jacks the PLAY/OUT audio jacks on a VCR or other video
to the composite or S-Video input of a TV monitor or source.
video projector to view the output of any standard
video source selected by the receiver's video switcher. 31 Video 1 Audio Outputs: Connect these jacks to
the RECORD/INPUT audio jacks on a VCR.
�g DVD Video Inputs: Connect one of these
jacks to the composite or S-Video output jacks on a 33 Video 2 Audio Inputs: Connect these jacks to
DVD or other video source. the PLAY/OUT audio jacks on a VCR, satellite receiver,
cable box, video game or other composite video
� Coaxial Digital Inputs: Connect the coax digital source.
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.

10 REAR-PANEL CONNECTIONS 10
AVR125 harman/kardon

REMOTE CONTROL FUNCTIONS

a Power Off Button c b a
b IR Transmitter Window
c Program Indicator
d Power On Button
e Input Selectors POWER
f AVR Selector
d ON OFF MUTE 36
g AM/FM Tuner Select
e
h Test Button
i Sleep Button f AVR DVD CD TAPE
j Surround Mode Selector VCR TV CBL/SAT
k Night Mode VID1 VID2 VID3

l Channel Select Button
m / Button
g AM/FM 6 CH. 35
n < Button h 34
o Set Button i SLEEP
TEST T/V
p Digital Select CH. NIGHT VOL. 33
q � Button SURR.
j
r Numeric Keys
s Tuner Mode k ME 32
E N
t Direct Button

ID
SP
l

U
GU
K
u Tuning Up/Down

R
31

.
CH
v Macro Buttons m
w Transport Controls
x Skip Up/Down Buttons n SET 30
o
y Disc Skip Button
z Preset Up/Down p
29
DIG

TA
` Clear Button
I

Y
L LA
EX

DE

H.
IT

Memory Button

.C
28 EV
q PR
Delay/Prev. Ch.
29 r
> Button
30 1 2 3 4
Speaker Select
31
5 6 7 8
Spare Button
32
Volume Up/Down
33 s TUN-M 9 0 MEM 28
TV/Video Selector
34 t `
6-Channel Direct Input
35 DIRECT CLEAR

Mute
36 u TUNING PRESET
z
D.SKIP
y
NOTE: The function names shown here refer to each
v M1 M2 M3 M4

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 w
functions.

x DWN UP

SKIP

125

11 REMOTE CONTROL FUNCTIONS 11
AVR125 harman/kardon

REMOTE CONTROL FUNCTIONS

IMPORTANT NOTE: The AVR 125's remote may be g AM/FM Tuner Select: Press this button to select m / Button: This multipurpose button is used to
programmed to control up to seven devices, including the AVR 125's tuner as the listening choice. Pressing change configuration settings such as output levels.
the AVR 125. Before using the remote, remember to this button when the tuner is already in use will switch When changing an item such as the surround mode or
press the Input Selector Button e that corre- between the AM and FM bands. digital input directly, first press the function or mode to
sponds to the unit you wish to operate. In addition, the be changed (e.g., press the Surround Mode Selector
AVR 125's remote is shipped from the factory to oper- h Test Button: Press this button to begin the j to select a surround mode or the Digital Select
ate the AVR 125 and most recent Harman Kardon sequence used to calibrate the AVR 125's output levels. Button p to change the digital input) and then press
products. The remote is also capable of operating a (See pages 18�19 for more information on calibrating this button to scroll through the list of available choices.
wide variety of other products using the control codes the AVR 125.)
that are part of the remote. Before using the remote n < Button: This button is used to change the
with other products, follow the instructions on pages i Sleep Button: Press this button to place the unit setting during some of the setup procedures for the
27�30 to program the proper codes for the products in the Sleep mode. After the time shown in the display, AVR 125.
in your system. the AVR 125 will automatically go into the Standby
mode. Each press of the button changes the time until o Set Button: This button is used to enter settings
It is also important to remember that many of the but- turn-off in the following order: into the AVR 125's memory. It is also used in the
tons on the remote take on different functions, depend- 90 80 70 60 50 setup procedures for delay time, speaker configuration
min min min min min
ing on the product selected using the Device Control and channel output level adjustment.
40 30 20 10 OFF
Selectors. The descriptions shown here primarily detail min min min min
the functions of the remote when it is used to operate p Digital Select: Press this button to assign one of
the AVR 125. (See pages 31�32 for information about the digital inputs �c#$ to the source currently
This button is also used to change channels on your
alternate functions for the remote's buttons.) in use. (See page 23 for more information on using
TV when the TV is selected, and it is also used to end
digital inputs.)
the process of creating a macro command. (See page
a Power Off Button: Pressing this button turns off 28 for more information on creating macros.)
(places in the Standby mode) the device that was last q � Button: This multipurpose button is used to
selected by pressing one of the Input Selectors e. change configuration settings such as output levels.
j Surround Mode Selector: Press this button to When changing an item such as the surround mode or
To place the AVR 125 in the Standby mode, first press begin the process of changing the surround mode. After
the AVR Selector Button f and then press this digital input directly, first press the function or mode to
the button has been pressed, use the //� Buttons be changed (e.g., press the Surround Mode Selector
button. mq to select the desired surround mode. (See j to select a surround mode or the Digital Select
b IR Transmitter Window: Point this window page 22 for more information.) This button is also Button p to change the digital input) and then press
towards the AVR 125 when pressing buttons on the used to tune channels when the TV is selected, and this button to scroll through the list of available choices.
remote to make certain that infrared commands are during the process of erasing stored macro com-
properly received. mands. (See page 28 for more information on r Numeric Keys: These buttons serve as a ten-
macros.) button numeric keypad to enter tuner preset positions.
c Program Indicator: This three-color indicator is They are also used to select channel numbers when
used to guide you through the process of program- NOTE: The Sleep Button i and Surround Mode TV has been selected on the remote, or to select track
ming the remote. (See pages 27�30 for information Selector j may also function as the Channel + numbers on a CD, DVD or LD player, depending on
on programming the remote.) and � keys when the remote is programmed for use how the remote has been programmed.
with TVs, cable boxes, VCRs, satellite receivers or other
d Power On Button: After selecting a device by video devices with tuners. See page 29 for information s Tuner Mode: Press this button when the tuner is
pressing one of the Input Selectors e, press this on programming the remote for Channel Control in use to select between automatic tuning and manual
button to turn the device on. To turn on the AVR 125, Punch-Through capability so that you may change tuning. In automatic tuning mode, the AUTO Indicator
press the AVR Selector Button f. channels on a separate device when the remote is R will be lit, and only stations with acceptable signal
in AVR mode. quality may be tuned by pressing the Tuning Up/
e Input Selectors: Pressing one of these buttons Down Buttons 8u. When the button is pressed
will perform three actions at the same time. First, if the k Night Mode: Press this button to activate the so that the AUTO Indicator R goes out, manual
AVR 125 is not turned on, this will power up the unit. Night mode. This mode is available in specially encod- tuning mode is engaged, and pressing the Tuning
Next, it will select the source shown on the button as ed digital sources to preserve dialog (center channel) Buttons u8 will move the frequency up or down
the input to the AVR 125. Finally, it will change the intelligibility at low volume levels. in single-step increments. When the FM band is in
remote control so that it controls the device selected. use, pressing this button when a station's signal is
After pressing one of these buttons you must press l Channel Select Button: This button is used to
weak will change to monaural reception. (See page
the AVR Selector Button f again to operate the start the process of setting the AVR 125's output levels to
25 for more information.)
AVR 125's functions with the remote. an external source. Once this button is pressed, use the
//� Buttons mq to select the channel being
t Direct Button: When the tuner is in use, press
f AVR Selector: Pressing this button will switch the adjusted, then press the Set Button o, followed by this button to start the sequence for direct entry of a
remote so that it will operate the AVR 125's functions. If the //� Buttons mq again, to change the level station's frequency. After pressing the button simply
the AVR 125 is in the Standby mode, it will also turn the setting. (See page 25 for more information.) press the proper Numeric Keys r to select a sta-
AVR 125 on. tion. (See page 25 for more information on the tuner.)

12 REMOTE CONTROL FUNCTIONS 12
AVR125 harman/kardon

REMOTE CONTROL FUNCTIONS

u Tuning Up/Down: When the tuner is in use, these AVR 125 when processing surround sound. After to operate another device or when a macro command
buttons will tune up or down through the selected fre- pressing this button, the delay times are entered by is being programmed, this button is pressed with the
quency band. If the Tuner Mode Button s@ has pressing the Set Button o and then using the Input Selector Button e to begin the program-
been pressed so that the AUTO Indicator R is illumi- //� Buttons mq to change the setting. Press ming process. (See page 27 for more information on
nated, pressing either of the buttons will cause the tuner the Set Button o again to complete the process. programming the remote.)
to seek the next station with acceptable signal strength (See page 19 for more information.)
for quality reception. When the AUTO Indicator R is
NOT illuminated, pressing these buttons will tune sta- 30 > Button: Pre