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®



Power for the Digital Revolution.
®




AVR 235
AUDIO/VIDEO RECEIVER
SERVICE MANUAL
Technical Specifications

Audio Section FM Tuner Section
Stereo Mode Frequency Range 87.5­108MHz
Continuous Average Power (FTC) Usable Sensitivity IHF 1.3 µV/13.2dBf
65 Watts per channel, 20Hz­20kHz, Signal-to-Noise Ratio Mono/Stereo: 70/68dB (DIN)
@ < 0.07% THD, both channels driven into 8 ohms Distortion Mono/Stereo: 0.2/0.3%
Stereo Separation 40dB @ 1kHz
5/7 Channel Surround Modes Selectivity ±400kHz: 70dB
Power Per Individual Channel Image Rejection 80dB
Front L&R channels: IF Rejection 90dB
50 Watts per channel,
@ < 0.07% THD, 20Hz­20kHz into 8 ohms AM Tuner Section
Center channel: Frequency Range 522­1611kHz
50 Watts, @ < 0.07% THD, 20Hz­20kHz into 8 ohms Signal-to-Noise Ratio 45dB
Usable Sensitivity Loop: 500µV
Surround (L & R Side, L & R Back) channels:
Distortion 1kHz, 50% Mod: 0.8%
50 Watts per channel,
Selectivity ±10kHz: 30dB
@ < 0.07% THD, 20Hz­20kHz into 8 ohms
Input Sensitivity/Impedance
Video Section
Linear (High Level) 200mV/47kohms
Video Format PAL/NTSC
Signal-to-Noise Ratio (IHF-A) 100dB Input Level/Impedance 1Vp-p/75 ohms
Surround System Adjacent Channel Separation Output Level/Impedance 1Vp-p/75 ohms
Analog Decoding 40dB Video Frequency Response
(Pro Logic, etc.) (Composite and S-Video) 10Hz­8MHz (-3dB)
Dolby Digital (AC-3) 55dB Video Frequency
DTS 55dB Response (Component) 10Hz­50MHz (-3dB)

Frequency Response
@ 1W (+0dB, ­3dB) 10Hz­130kHz General
High Instantaneous Power Requirement AC 220­240V/50Hz
Current Capability (HCC) ±35 Amps Power Consumption 118W idle, 890W maximum
(7 channels driven)
Transient Intermodulation
Distortion (TIM) Unmeasurable Dimensions (Max)
Width 440mm
Rise Time 16 µsec Height 165mm
Slew Rate 40V/µsec** Depth 382mm
Weight 13.95 kg



Depth measurement includes knobs, buttons and terminal connections.
Height measurement includes feet and chassis.
All features and specifications are subject to change without notice.
Harman Kardon is a registered trademark, and Power for the digital revolution is a trademark, of
Harman International Industries, Inc.
TM


is a trademark of Harman International Industries, Inc.
(Patent No. 5,386,478).
*Manufactured under license from Dolby Laboratories.
"Dolby," "Pro Logic," "Pro Logic II" and the Double-D symbol are
trademarks of Dolby Laboratories. Confidential Unpublished
Works. ©1992­1999 Dolby Laboratories, Inc. All rights reserved.
DTS and DTS Surround, DTS-ES and DTS Neo:6 are trademarks of Digital Theater Systems, Inc.
VMAx is a 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 Harman International Industries, Incorporated.
Crystal is a registered trademark of Cirrus Logic Corp.
**Without input anti slewing and output isolation networks.




TECHNICAL SPECIFICATIONS
Front Panel Controls

¯ ( ~ Û$ ^ & i Ù Ú


AVR 235




1 3 8 5 ) ! 7 % * Ó

2 4 6 9 7 @ # ^ Ô Ò


1 Main Power Switch ! Tuner Band Selector Ô Video 4 input jacks
2 System Power Control @ Set Button Bass Control
3 Power Indicator # Preset Stations Selector Ò Balance Control
4 Headphone Jack $ Speaker/Channel Input Indicator Ú Treble Control
5 Surround Mode Group Selector % Input Source Selector Û Digital Input Selector
6 Speaker Select Button ^ RDS Select Button Ù Channel Select Button
7 Selector Buttons & Delay i Volume Control
8 Tone Mode * Digital Optical 3 Input ^ Input Indicators
9 Surround Mode Selector ( Surround Mode Indicators ~ Main Information Display
) Tuning Ó Digital Coax 3 Input ¯ Remote Sensor Window


1 Main Power Switch: Press this button to 2 System Power Control: When the Main 5 Surround Mode Group Selector: Press
apply power to the AVR. When the switch is Power Switch 1 is "ON," press this button to this button to select the top-level group of
pressed in, the unit is placed in a Standby turn on the AVR; press it again to turn the unit surround modes. Each press of the button will
mode, as indicated by the orange LED 3. This off (to Standby). Note that the Power Indicator select a major mode grouping in the following
button MUST be pressed in to operate the unit. 3 will turn blue when the unit is on. order:
To turn the unit off completely and prevent the
3 Power Indicator: This LED will be illuminated Dolby Modes DTS Digital Modes DSP
use of the remote control, this switch should be
in orange when the unit is in the Standby mode Modes Stereo Modes Logic 7 Modes
pressed until it pops out from the front panel so
to signal that the unit is ready to be turned on.
that the word "OFF" may be read at the top of Once the button is pressed so that the name of
When the unit is in operation, the indicator will
the switch. the desired surround mode group appears in the
turn blue.
Main Information Display ~, press the
NOTE: This switch is normally left in the "ON"
4 Headphone Jack: This jack may be used to Surround Mode Selector 9 to cycle through
position.
listen to the AVR's output through a pair of head- the individual modes available. For example, press
phones. Be certain that the headphones have a this button to select Dolby modes, and then press
standard 6.3 mm stereo phone plug. Note that the Surround Mode Selector 9 to choose
the speakers will automatically be turned off from the various mode options.
when the headphones are connected.
6 Speaker Select Button: Press this button
to begin the process of selecting the speaker
positions that are used in your listening room.
(See page 16 for more information on setup and
configuration.)




FRONT PANEL CONTROLS
Front Panel Controls

7 Selector Buttons: When you are establishing $ Speaker/Channel Input Indicators: These Bass Control: Turn this control to modify the
the AVR's configuration settings, use these buttons indicators are multipurpose, indicating either the low frequency output of the left/right channels by
to select from the choices available, as shown in speaker type selected for each channel or the as much as ±10dB. Set this control to a suitable
the Main Information Display ~. incoming data-signal configuration. The left, center, position for your taste or room acoustics.
right, right surround and left surround speaker
8 Tone Mode: Pressing this button enables or Ò Balance Control: Turn this control to
indicators are composed of three boxes, while the
disables the Balance, Bass and Treble tone change the relative volume for the front left/right
subwoofer is a single box. The center box lights
controls. When the button is pressed so that the channels.
when a "Small" speaker is selected, and the two
words TONE I N appear in the Main
outer boxes light when "Large" speakers are NOTE: For proper operation of the surround
Information Display ~, the settings of the
selected. When none of the boxes are lit for the modes this control should be at the midpoint or
Bass and Treble Ú controls and of the
center, surround or subwoofer channels, no speaker "12 o'clock" position.
Balance control Ò will affect the output
has been selected for that position. (See page 17
signals. When the button is pressed so that the Ú Treble Control: Turn this control to modify
for more information on configuring speakers.) The
words TONE OUT appear in the Main the high frequency output of the left/right channels
letters inside each of the center boxes display
Information Display ~, the output signal will by as much as ±10dB. Set this control to a suitable
active input channels. For standard analog inputs,
be "flat, without any balance, bass or treble
" position for your taste or room acoustics.
only the L and R will light, indicating a stereo
alteration.
input. When a digital source is playing, the indica- Û Digital Input Selector: When playing a
9 Surround Mode Selector: Press this button tors will light to display the channels begin source that has a digital output, press this button
to select from among the available surround received at the digital input. When the letters to select between the Optical L and Coaxial
mode options for the mode group selected. The flash, the digital input has been interrupted. (See 9 Digital inputs. (See pages 20-22 for more
specific modes will vary based on the number of page 19 for more information on the Channel information on digital audio).
speakers available, the mode group and if the Indicators).
Ù Channel Select Button: Press this button
input source is digital or analog. For example,
% Input Source Selector: Press this button to to begin the process of trimming the channel
press the Surround Mode Group Selector 5
change the input by scrolling through the list of output levels using an external audio source.
to select a mode grouping such as Dolby or Logic
input sources. (For more information on output level trim
7, and then press this button to see the mode
adjustment, see page 32).
choices available. For more information on mode ^ RDS Select Button: Press this button to
selection, see page 29. display the various messages that are part of the i Volume Control: Turn this knob clockwise
RDS data system of the AVR's tuner. to increase the volume, counterclockwise to
) Tuning Selector: Press the left side of the
(See page 36 for more information on RDS). decrease the volume. If the AVR is muted, adjust-
button to tune lower frequency stations and the
ing volume control will automatically release the
right side of the button to tune higher frequency & Delay: Press this button to begin the
unit from the silenced condition.
stations. When a station with a strong signal is sequence of steps required to enter delay time
reached, MANUAL TUNED or AUTO settings (See page 22 for more information on ^ Input indicators: The current selected
TUNED will appear in the Main Information delay times). mode or function will appear as one of these
Display ~ (see page 35 for more information indicators. Note that when the unit is turned on,
* Digital Optical 3 Input: Connect the optical
on tuning stations). the entire list of available modes will light briefly,
digital audio output of an audio or video product
and then revert to normal operation with only
! Tuner Band Selector: Pressing this button to this jack. When the Input is not in use, be
the active mode indicator illuminated.
will automatically switch the AVR to the Tuner certain to keep the plastic cap installed to avoid
mode. Pressing it again will switch between the dust contamination that might degrade future ~ Main Information Display: This display
AM and FM frequency bands, holding it pressed performance. delivers messages and status indications to help
for some seconds will switch between stereo and you operate the receiver.
( Surround Mode Indicators: The current
mono receiving and between automatic and
selected mode or function will appear as one of ¯ Remote Sensor Window: The sensor
manual tuning mode (See page 35 for more
these indicators. Note that when the unit is behind this window receives infrared signals from
information on the tuner).
turned on, the entire list of available modes will the remote control. Aim the remote at this area
@ Set Button: When making choices during the light briefly, and then revert to normal operation and do not block or cover it unless an external
setup and configuration process, press this button with only the active mode indicator illuminated. remote sensor is installed.
to enter the desired setting as shown in the
Ó Digital Coax 3 Input: This jack is normally
Main Information Display ~ into the AVR's
used for connection to the output of portable
memory. The set button may also be used to
digital audio devices, video game consoles or
change the display brightness (See page 33).
other products that have a coax digital jack.
# Preset Stations Selector: Press this
Ô Video 4 Input Jacks: These audio/video
button to scroll up or down through the list of
jacks may be used for temporary connection to
stations that have been entered into the preset
video games or portable audio/video products
memory (See page 35 for more information on
such as camcorders and portable audio players.
tuner programming).




FRONT PANEL CONTROLS
Rear Panel Connections




0 AM Antenna C DVD Video Inputs O Surround Back Speaker Outputs
1 FM Antenna D Front Speaker Outputs P Video 1 Video Outputs
2 Tape Inputs E Center Speaker Outputs Q Video 1 Video Inputs
3 Tape Outputs F Surround Speaker Outputs R Video 2 Video Outputs
4 Subwoofer Output G Switched AC Accessory Outlet S Video 3 Video Inputs
5 DVD Audio Inputs H Unswitched AC Accessory Outlet T Video 2 Video Inputs
6 CD Inputs I AC Power Cord U Optical Digital Inputs
7 Video 1 Audio Outputs J Video 2 Component Video Inputs V Coaxial Digital Inputs
8 Preamp Outputs K Component Video Outputs W Video 2 Audio Outputs
9 8-Channel Direct Inputs L DVD Component Video Inputs X Video 2 Audio Inputs
A Digital Audio Outputs M Remote IR Output Y Video 3 Audio Inputs
B Video Monitor Outputs N Remote IR Input Z Video 1 Audio Inputs




NOTE: To assist in making the correct connec- 1 FM Antenna: Connect the supplied indoor or 7 Video 1 Audio Outputs: Connect these
tions for multichannel input/output and speaker an optional external FM antenna to this terminal. jacks to the RECORD/INPUT audio jacks on
connections, all connection jacks and terminals a VCR or any other Audio recorder.
2 Tape Inputs: Connect these jacks to the
have been color coded in conformance with the
PLAY/OUT jacks of an audio recorder. 8 Preamp Outputs: Connect these jacks to
latest CEA standards as follows:
an optional, external power amplifier for applica-
Front Left: White 3 Tape Outputs: Connect these jacks to the
tions where higher power is desired.
Front Right: Red RECORD/INPUT jacks of an audio recorder.
Center: Green 9 8-Channel Direct Inputs: These jacks are
4 Subwoofer Output: Connect this jack to
Surround Left: Blue used for connection to source devices such as
the line-level input of a powered subwoofer. If an
Surround Right: Gray DVD-Audio or SACD players with discrete analog
external subwoofer amplifier is used, connect this
Surround Back Left: Brown outputs. Depending on the source device in use,
jack to the subwoofer amplifier input.
Surround Back Right: Tan all eight jacks may be used, though in many
Subwoofer (LFE): Purple 5 DVD Audio Inputs: Connect these jacks to cases only connections to the front left/right,
Digital Audio: Orange the analog audio jacks on a DVD or other audio center, surround left/right and LFE (subwoofer
Composite Video: Yellow or video source. input) jacks will be used for standard 5.1 audio
Component Video "Y": Green signals.
6 CD Inputs: Connect these jacks to the
Component Video "Pr": Red
analog output of a compact disc player or CD A Digital Audio Outputs: Connect these
Component Video "Pb": Blue
changer or any other audio source. jacks to the matching digital input connector on
0 AM Antenna: Connect the AM loop antenna a digital recorder such as a CD-R or MiniDisc
supplied with the receiver to these terminals. If an recorder.
external AM antenna is used, make connections to
the AM and GND terminals in accordance with
the instructions supplied with the antenna.



REAR PANEL CONNECTIONS
Rear Panel Connections

B Video Monitor Outputs: Connect this jack Note: The total power consumption of all S Video 3 Video Inputs: Connect these jacks
to the composite and/or S-Video input of a TV devices connected to the accessory outlets to the PLAY/OUT composite or S-Video jacks on
monitor or video projector to view the on-screen should not exceed 100 watts from the any video source.
menus and the output of any standard Video or Unswitched Outlet H and 50 W from the
T Video 2 Video Inputs: Connect these jacks
S-Video source selected by the receiver's video Switched Outlet G.
to the PLAY/OUT composite or S-Video jacks on
switcher.
I AC Power Cord: Connect the AC plug to an a second VCR or other video source.
C DVD Video Inputs: Connect these jacks to unswitched AC wall output.
the composite or S-Video output jacks on a DVD U Optical Digital Inputs: Connect the
player or other video source. J Video 2 Component Video Inputs: optical digital output from a DVD player, HDTV
Connect the Y/Pr/Pb component video outputs of receiver, the output of a compatible computer
D Front Speaker Outputs: Connect these an HDTV Set-top convertor, satellite receiver, or sound card playing MP3 files or streams, LD
outputs to the matching + or ­ terminals on other video source device with component video player, MD player or CD player to these jacks.
your left and right speakers. In conformance with outputs to these jacks. The signal may be either a Dolby Digital signal, a
the new CEA color code specification, the White DTS signal, a 2 channel MPEG 1 signal, or a
terminal is the positive, or "+" terminal that K Monitor Component Video Outputs: standard PCM digital source.
should be connected to the red (+) terminal on Connect these outputs to the component video
inputs of a video projector or monitor. When a V Coaxial Digital Inputs: Connect the coax
Front Left speaker with the older color coding,
source connected to one of the two digital output from a DVD player, HDTV receiver,
while the Red terminal is the positive, or "+"
Component Video Inputs JL is selected the output of a compatible computer sound card
terminal that should be connected to the red (+)
the signal will be sent to these jacks. playing MP3 files or streams, LD player, MD
terminal on Front Right speaker. Connect the
player or CD player to these jacks. The signal
black (­) terminals on the AVR to the black (­)
L DVD Component Video Inputs: Connect may be either a Dolby Digital signal, DTS signal,
terminals on the speakers. See page 12 for more
the Y/Pr/Pb component video outputs of a DVD a 2 channel MPEG 1 signal, or a standard PCM
information on speaker polarity.
player to these jacks. digital source. Do not connect the RF digital out-
E Center Speaker Outputs: Connect these put of an LD player to these jacks.
Note: All component inputs/outputs can be
outputs to the matching + and ­ terminals on
used for RGB signals too, in the same way as W Video 2 Audio Outputs: Connect these
your center channel speaker. In conformance
described for the Y/Pr/Pb signals, then connected jacks to the RECORD/INPUT audio jacks on a
with the new CEA color code specification, the
to the jacks with the corresponding color. VCR or any Audio recorder.
Green Terminal is the positive, or "+" terminal
RGB connection is not possible if the source out-
that should be connected to the red (+) terminal X Video 2 Audio Inputs: Connect these jacks
puts a separate sync signal (see page 13).
on speakers with the older color coding. Connect to the PLAY/OUT audio jacks on a second VCR
the black (­) terminal on the AVR to the black M Remote IR Output: This connection permits or other audio or video source.
negative (­) terminal on your speaker. (See page the IR sensor in the receiver to serve other
remote controlled devices. Connect this jack to Y Video 3 Audio Inputs: Connect these jacks
12 for more information on speaker polarity.)
the "IR IN" jack on Harman Kardon or other to the PLAY/OUT audio jacks on any audio or
F Surround Speaker Outputs: Connect video source.
compatible equipment.
these outputs to the matching + and ­ terminals
on your surround channel speakers. In confor- N Remote IR Input: If the AVR's front-panel Z Video 1 Audio Inputs: Connect these jacks
mance with the new CEA color code specifica- IR sensor is blocked due to cabinet doors or to the PLAY/OUT audio jacks on a VCR or other
tion, the Blue terminal is the positive, or "+" other obstructions, an external IR sensor may audio or video source.
terminal that should be connected to the red (+) be used. Connect the output of the sensor to
terminal on the Surround Left speaker with older this jack.
color coding, while the Gray terminal should be
O Surround Back Speaker Outputs: These
connected to the red (+) terminal on the
speaker terminals are used to power the
Surround Right speaker with the older color
surround back left/surround back right speakers
coding. Connect the black (­) terminal on the
in a 7.1 channel system. In normal surround
AVR to the matching black negative (­)
system use, the brown and black terminals are
terminals for each surround speaker. (See page
the surround back left channel positive (+) and
12 for more information on speaker polarity.)
negative (­) connections and the tan and black
G Switched AC Accessory Outlet: This terminals are the surround back right positive
outlet may be used to power any device that you (+) and negative (­) terminals.
wish to have turn on when the AVR is turned on
with the System Power Control switch 2. P Video 1 Video Outputs: Connect these
jacks to the RECORD/INPUT composite or
H Unswitched AC Accessory Outlet: This S-Video jack on a VCR.
outlet may be used to power any AC device. The
power will remain on at this outlet regardless of Q Video 1 Video Inputs: Connect these jacks
whether the AVR is on or off (in Standby), pro- to the PLAY/OUT composite or S-Video jacks on
vided that the Main Power switch 1 is on. a VCR or other video source.
R Video 2 Video Outputs: Connect these
jacks to the RECORD/INPUT composite or
S-Video jacks on a second VCR.




REAR PANEL CONNECTIONS
Operation

Surround Mode Chart
MODE FEATURES DELAY TIME RANGE

DOLBY DIGITAL Available only with digital input sources encoded with Dolby Digital data. It provides Center: 0 - 30ft / 9m
up to five separate main audio channels and a special dedicated Low Frequency Effects Initial Setting: 12ft / 3.6m
channel. Surround: 0 - 30ft / 9m
Initial Setting: 10ft / 3m

DOLBY DIGITAL EX Available when the receiver is configured for 6.1/7.1 channel operation, Dolby Digital EX is the Center: 0 - 30ft / 9m
latest version of Dolby Digital. When used with movies or other programs that have special Initial Setting: 12ft / 3.6m
encoding, Dolby Digital EX reproduces specially encoded soundtracks so that a full 6.1/7.1 Surround: 0 - 30ft / 9m
soundfield is available. When the receiver is set for 6.1/7.1 operation and a Dolby Digital signal is Initial Setting: 10ft / 3m
present, the EX mode is automatically selected. Even if specific EX encoding is not available to Surround Back: 0 - 30ft / 9m
provide the additional channel, the special algorithms will derive a 6.1/7.1 output. Initial Setting: 10ft / 3m

DTS 5.1 When the speaker configuration is set for 5.1-channel operation, the DTS 5.1 mode is Delay time not adjustable
available when DVD, audio-only music or laserdiscs encoded with DTS data are played.
DTS 5.1 provides up to five separate main audio channels and a special dedicated
low-frequency channel.

DTS-ES 6.1 Matrix When the speaker configuration is set for 6.1/7.1 operation, playback of a DTS-encoded program Delay time not adjustable
DTS-ES 6.1 Discrete source will automatically trigger the selection of one of the two DTS-ES modes. Newer discs with
special DTS-ES discrete encoding will be decoded to provide six discrete, full-bandwidth channels
plus a separate low-frequency channel. All other DTS discs will be decoded using the DTS-ES Matrix
mode, which creates a 6.1-channel sound field from the original 5.1-channel soundtrack.

DOLBY PRO LOGIC II Dolby Pro Logic II is the latest version of Dolby Laboratory's benchmark surround technology Center: 0 - 30ft / 9m
MOVIE that decodes full-range, discrete left, center right, right surround and left surround channels Initial Setting: 12ft / 3.6m
MUSIC from matrix surround encoded programs and conventional stereo sources when Surround: 0 - 30ft / 9m
EMULATION an analog input or a digital input with PCM or Dolby Digital 2.0 recordings is in use. The Initial Setting: 10ft / 3m
Dolby Pro Logic II Movie mode is optimized for movie soundtracks that are recorded with matrix
surround, by creating separate center, rear left and rear right signals. while the Pro Logic II Music
mode should be used with musical selections that are recorded with matrix surround or even with
normal stereo mode, creating separate rear left and rear right signals in any case.
The Pro Logic II Emulation mode creates compelling five-channel surround sound from
conventional stereo recordings.

DOLBY PRO LOGIC IIx Dolby Pro Logic IIx is the latest extension of Dolby Pro Logic II technology that creates a discrete Center: 0 - 30ft / 9m
MUSIC 6.1 and 7.1 sound field from matrix surround or two-channel stereo sources in systems Initial Setting: 12ft / 3.6m
MOVIE configured for surround back speakers. Both Movie and Music versions of Pro Logic IIx are Surround: 0 - 30ft / 9m
available. These modes may also be applied to a six-channel source connected to the Initial Setting: 10ft / 3m
8-Channel Direct Inputs 9 so that the sound field is enhanced by adding back surround
channels.

Logic 7 Cinema Exclusive to Harman Kardon for AV receivers, Logic 7 is an advanced mode that extracts the Delay time not adjustable
Logic 7 Music maximum surround information from either surround-encoded programs or conventional stereo
Logic 7 Enhance material. Depending on the number of speakers in use and the selection made in the SURROUND
SELECT menu, the "5.1" versions of Logic 7 modes are available when the 5.1 option is chosen,
while the "7.1" versions of Logic 7 produce a full sound field presentation, including back surround
speakers when the "6.1/7.1" option is chosen. The Logic 7 C (or Cinema) mode should be used
with any source that contains Dolby Surround or similar matrix encoding. Logic 7 C delivers
increased center-channel intelligibility, and more accurate placement of sounds with fades and pans
that are much smoother and more realistic than with former decoding techniques. The Logic 7 M or
Music mode should be used with analog or PCM stereo sources. Logic 7 M enhances the listening
experience by presenting a wider front soundstage and greater rear ambience. Both Logic 7 modes
also direct low-frequency information to the subwoofer (if installed and configured) to deliver
maximum bass impact. The Logic 7 E (or Enhance) mode is an extension of the Logic 7 modes that is
primarily used with musical programs and is available with the 5.1 surround mode option selected
only. Logic 7 E adds additional bass enhancement that circulates low frequencies in the 40Hz to 120Hz
range to the front and surround speakers to deliver a less localized soundstage that appears broader
and wider than when the subwoofer is the sole source of bass energy.



OPERATION
Troubleshooting Guide

SYMPTOM CAUSE SOLUTION

Unit does not function when Main · No AC Power · Make certain AC power cord is plugged
Power Switch 1 is pushed into a live outlet
· Check to see if outlet is switch controlled

Display lights, but no sound · Intermittent input connections · Make certain that all input and speaker
or picture connections are secure
· Mute is on · Press Mute button c
· Volume control is down · Turn up volume control

Units turns on, but Front-Panel · Display brightness is turned off · Follow the instructions in the Display Brightness section
Display does not light on page 34 so that the display is set to VFD FULL

No sound from any speaker; · Amplifier is in protection mode · Check speaker-wire connections for shorts at receiver
light around Power switch 2 is red due to possible short and speaker ends
· Amplifier is in protection mode · Contact your local Harman Kardon service depot
due to internal problems

No sound from surround or · Incorrect surround mode · Select a mode other than Stereo
center speakers · Input is mono · There is no surround information from mono sources (except with
Theater and Hall surround modes)
· Incorrect configuration · Check speaker mode configuration
· Stereo or Mono program material · Some surround modes may not create rear-channel information
from nonencoded programs

Unit does not respond to · Weak batteries in remote · Change remote batteries
remote commands · Wrong device selected · Press the AVR Selector 5
· Remote sensor ¯ is obscured · Make certain front-panel sensor is visible to remote or
connect remote sensor

Intermittent buzzing in tuner · Local interference · Move unit or antenna away from computers, fluorescent lights,
motors or other electrical appliances

Letters flash in the Channel Indicator · Digital audio feed paused · Resume play for DVD
Display $ and Digital Audio stops · Check that Digital Signal is fed to the Digital Input selected




Processor Reset To clear the AVR's entire system memory includ- NOTE: Resetting the processor will erase any
ing tuner presets, output level settings, delay configuration settings you have made for
In the rare case where the unit's operation or the times and speaker configuration data, first put speakers, output levels, surround modes, digital
displays seem abnormal, the cause may involve the unit in Standby by pressing the System input assignments as well as the tuner presets.
the erratic operation of the system's memory or Power Control button 2. Next press and hold After a reset the unit will be returned to the
microprocessor. the Tone Mode button 8 for three seconds. factory presets, and all settings for these items
must be reentered.
To correct this problem, first unplug the unit from The unit will turn on automatically. Note that
the AC wall outlet and wait at least three once you have cleared the memory in this manner, If the system is still operating incorrectly, there
minutes. After the pause, reconnect the AC it is necessary to re-establish all system configura- may have been an electronic discharge or severe
power cord and check the unit's operation. If the tion settings and tuner presets. AC line interference that has corrupted the
system still malfunctions, a system reset may memory or microprocessor.
clear the problem.
If these steps do not solve the problem, consult
an authorized Harman Kardon service depot.




TROUBLESHOOTING GUIDE
Front PCB assy
Ref# Component Description 1 Description 2 Qty
COP11745F FRONT PCB ASS'Y 1
C701 HCBS1H390JT CAP , CERAMIC 39PF 50V J 1
C702 HCBS1H390JT CAP , CERAMIC 39PF 50V J 1
C703 HCBS1H821KBT CAP , CERAMIC 820PF 50V K 1
C704 HCEA1VH100T CAP , ELECT 10UF 35V 1
C705 HCBS1H102KBT CAP , CERAMIC 1000PF 50V B 1
C706 HCBS1H561KBT CAP , CERAMIC 560PF 50V B 1
C708 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C709 CCEA1CH101T CAP , ELECT 100UF 16V 1
C710 CCEA1HH2R2T CAP , ELECT 2.2UF 50V 1
C711 HCBS1H102KBT CAP , CERAMIC 1000PF 50V B 1
C712 HCEA1HH1R0T CAP , ELECT 1UF 50V 1
C713 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C714 HCBS1H151KBT CAP , CERAMIC 150PF 50V K 1
C715 HCEA1HH4R7T CAP , ELECT 4.7UF 50V 1
C716 HCEA1CH331T CAP , ELECT 180UF 16V 1
C719 HCBS1H181KBT CAP , CERAMIC 180PF 50V K 1
C720 HCBS1H181KBT CAP , CERAMIC 180PF 50V K 1
C721 HCBS1H181KBT CAP , CERAMIC 180PF 50V K 1
C723 HCBS1H104ZFT CAP , CERAMIC 0.1UF 50V Z 1
C724 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C725 CCKT1H473ZF CAP , CERAMIC 0.047UF 50V ZF 1
C726 HCEA1CH101T CAP , ELECT 100UF 16V 1
C728 HCBS1H104ZFT CAP , CERAMIC 0.1UF 50V Z 1
C729 CCKT1H473ZF CAP , CERAMIC 0.047UF 50V ZF 1
C730 HCBS1H104ZFT CAP , CERAMIC 0.1UF 50V Z 1
C731 HCEA1HH100T CAP , ELECT 10UF 50V 1
C735 CCEA1CH101T CAP , ELECT 100UF 16V 1
C736 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C737 HCBS1H120JCT CAP , CERAMIC 12PF 50V J 1
C738 HCBS1H120JCT CAP , CERAMIC 12PF 50V J 1
C739 CCEA1AH221T CAP , ELECT 220UF/10V 1
C740 CCEA1VH100T CAP , ELECT 10UF 35V 1
C770 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C771 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C773 HCEA1VH100T CAP , ELECT 10UF 35V 1
C774 HCEA1VH100T CAP , ELECT 10UF 35V 1
C775 HCBS1H151KBT CAP , CERAMIC 150PF 50V K 1
C776 HCBS1H151KBT CAP , CERAMIC 150PF 50V K 1
C777 HCEA1VH100T CAP , ELECT 10UF 35V 1
C778 HCEA1VH100T CAP , ELECT 10UF 35V 1
C779 HCEA1CKS470T CAP , ELECT 47UF 16V 1
C780 HCEA1CKS470T CAP , ELECT 47UF 16V 1
C781 HCEA1CKS100T CAP , ELECT 10UF 16V 1
C782 HCEA1CKS100T CAP , ELECT 10UF 16V 1
C785 HCBS1H470JT CAP , CERAMIC 47PF 50V J 1
C786 HCBS1H470JT CAP , CERAMIC 47PF 50V J 1
C787 HCEA1CKS100T CAP , ELECT 10UF 16V 1
C788 HCEA1CKS100T CAP , ELECT 10UF 16V 1
C789 HCEA1CKS100T CAP , ELECT 10UF 16V 1
C790 HCEA1CKS100T CAP , ELECT 10UF 16V 1
C791 HCEA1CKS470T CAP , ELECT 47UF 16V 1
C792 HCEA1CKS470T CAP , ELECT 47UF 16V 1
C793 KCFE1J183JBT CAP , FILM 0.018UF 63V J 1
C794 KCFE1J183JBT CAP , FILM 0.018UF 63V J 1
C795 KCFE1J823JBT CAP , FILM 0.082UF 63V J 1
C796 KCFE1J823JBT CAP , FILM 0.082UF 63V J 1
C797 KCFE1J332JBT CAP , FILM 0.0033UF 63V J 1

Harman Consumer Group International HARMAN/KARDON AVR235/230
Front PCB assy
Ref# Component Description 1 Description 2 Qty
C798 KCFE1J332JBT CAP , FILM 0.0033UF 63V J 1
C799 KCFE1J183JBT CAP , FILM 0.018UF 63V J 1
C800 KCFE1J183JBT CAP , FILM 0.018UF 63V J 1
C805 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C806 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C807 CCFT1H104ZF CAP , SEMICONDUCTOR 0.1UF 50V ZF 1
C808 CCKT1H181KB CAP , CERAMIC 180PF 50V KB 1
C810 HCEA1CH101T CAP , ELECT 100UF 16V 1
C811 HCEA1CH101T CAP , ELECT 100UF 16V 1
C812 CCFT1H104ZF CAP , SEMICONDUCTOR 0.1UF 50V ZF 1
C813 HCEA1HH4R7T CAP , ELECT 4.7UF 50V 1
C814 HCEA1HH4R7T CAP , ELECT 4.7UF 50V 1
C850 HCBS1H471KBT CAP , CERAMIC 470PF 50V K 1
C851 HCBS1H471KBT CAP , CERAMIC 470PF 50V K 1
C852 HCBS1H104ZFT CAP , CERAMIC 0.1UF 50V Z 1
C855 HCBS1H101KBT CAP , CERAMIC 100PF 50V K 1
C856 HCBS1H101KBT CAP , CERAMIC 100PF 50V K 1
C857 HCBS1H104ZFT CAP , CERAMIC 0.1UF 50V Z 1
C859 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C860 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C861 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C862 HCBS1H101KBT CAP , CERAMIC 100PF 50V K 1
C863 HCBS1H101KBT CAP , CERAMIC 100PF 50V K 1
C866 HCEA1CKS100T CAP , ELECT 10UF 16V 1
C867 HCEA1CKS100T CAP , ELECT 10UF 16V 1
C868 HCEA1CKS470T CAP , ELECT 47UF 16V 1
C869 HCEA1CKS470T CAP , ELECT 47UF 16V 1
C870 HCBS1H681KBT CAP , CERAMIC 680PF 50V 1
C871 HCBS1H681KBT CAP , CERAMIC 680PF 50V 1
C872 HCEA1CH331T CAP , ELECT 330UF 16V 1
C873 HCEA1CH331T CAP , ELECT 330UF 16V 1
C874 HCBS1H101KBT CAP , CERAMIC 100PF 50V K 1
C875 HCBS1H101KBT CAP , CERAMIC 100PF 50V K 1
C876 HCBS1H101KBT CAP , CERAMIC 100PF 50V K 1
C877 HCBS1H473ZFT CAP , CERAMIC 0.047UF 50V Z 1
C878 HCBS1H473ZFT CAP , CERAMIC 0.047UF 50V Z 1
C882 HCBS1H104ZFT CAP , CERAMIC 0.1UF 50V Z 1
C886 CCEA0JH102T CAP , ELECT 1000UF 6.3V 1
C889 HCBS1H220JCT CAP , CERAMIC 22PF 50V J 1
C890 HCBS1H220JCT CAP , CERAMIC 22PF 50V J 1
C891 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C892 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C893 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C894 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C895 HCEA1AH471T CAP , ELECT 470UF 10V 1
C896 HCBS1H223ZFT CAP , CERAMIC 0.022UF 50V Z 1
C897 HCEA1AH471T CAP , ELECT 470UF 10V 1
C900 HCBS1H104ZFT CAP , CERAMIC 0.1UF 50V Z 1
C901 HCBS1H104ZFT CAP , CERAMIC 0.1UF 50V Z 1
C903 HCEA1HH2R2T CAP , ELECT 2.2UF 50V 1
C905 HCEA1HH2R2T CAP , ELECT 2.2UF 50V 1
D724 HVD1SS133MT DIODE 1SS133T-77 1
D725 HVD1SS133MT DIODE 1SS133T-77 1
D726 HVD1SS133MT DIODE 1SS133T-77 1
D727 HVD1SS133MT DIODE 1SS133T-77 1
D728 HVD1SS133MT DIODE 1SS133T-77 1
D729 HVD1SS133MT DIODE 1SS133T-77 1
D730 HVD1SS133MT DIODE 1SS133T-77 1

Harman Consumer Group International HARMAN/KARDON AVR235/230
Front PCB assy
Ref# Component Description 1 Description 2 Qty
D774 HVD1SS133MT DIODE 1SS133T-77 1
D778 KVD1N4003ST DIODE 1N4003 1
D779 HVD1SS133MT DIODE 1SS133T-77 1
D780 HVD1SS133MT DIODE 1SS133T-77 1
D781 HVD1SS133MT DIODE 1SS133T-77 1
D782 KVD1N4003ST DIODE 1N4003 1
D783 HVD1SS133MT DIODE 1SS133T-77 1
D784 HVD1SS133MT DIODE 1SS133T-77 1
D785 HVD1SS133MT DIODE 1SS133T-77 1
D786 HVDMTZJ5.6BT DIODE , ZENER 1
D787 HVDMTZJ5.6BT DIODE , ZENER 1
IC87 HVIRE5VL28CATZ IC , RESET 1
L702 HLQ02C100KT COIL , AXAIL 1
Q701 HVTKRC107MT T.R KRC107M 1
Q702 HVTKRC107MT T.R KRC107M 1
Q703 HVTKRC107MT T.R KRC107M 1
Q705 HVTKRC107MT T.R KRC107M 1
Q706 HVTKRC107MT T.R KRC107M 1
Q722 HVTKRA107MT T.R KRA107M 1
Q724 HVTKRC107MT T.R KRC107M 1
Q725 HVTKRC107MT T.R KRC107M 1
Q726 HVTKRC107MT T.R KRC107M 1
Q727 HVTKRC107MT T.R KRC107M 1
Q728 HVTKRC107MT T.R KRC107M 1
Q729 HVTKRC107MT T.R KRC107M 1
Q731 KVTKSA1175YT T.R KSA1175Y 1
Q732 HVTKRC107MT T.R KRC107M 1
Q733 KVTKSC2785YT T.R KSC2785Y 1
Q734 HVTKTC2874BT T.R , MUTE KTC2874B 1
Q735 HVTKTC2874BT T.R , MUTE KTC2874B 1
Q736 HVTKTC2874BT T.R , MUTE KTC2874B 1
Q737 HVTKTC2874BT T.R , MUTE KTC2874B 1
Q738 HVTKRC107MT T.R KRC107M 1
Q739 HVTKTA1271YT T.R KTA1271Y 1
Q743 HVTKRA107MT T.R KRA107M 1
R701 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R702 CRD20TJ1R0T RES , CARBON 1 OHM 1/5W J 1
R703 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R704 CRD20TJ100T RES , CARBON 10 OHM 1/5W J 1
R705 CRD20TJ820T RES , CARBON 82 OHM 1/5W J 1
R706 CRD20TJ820T RES , CARBON 82 OHM 1/5W J 1
R707 CRD20TJ820T RES , CARBON 82 OHM 1/5W J 1
R708 CRD20TJ820T RES , CARBON 82 OHM 1/5W J 1
R709 CRD20TJ470T RES , CARBON 47 OHM 1/5W J 1
R710 CRD20TJ470T RES , CARBON 47 OHM 1/5W J 1
R711 CRD20TJ470T RES , CARBON 47 OHM 1/5W J 1
R712 CRD20TJ470T RES , CARBON 47 OHM 1/5W J 1
R713 CRD20TJ332T RES , CARBON 3.3K OHM 1/5W J 1
R716 CRD20TJ102T RES , CARBON 1K OHM 1/5W J 1
R717 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R718 CRD20TJ222T RES , CARBON 2.2K OHM 1/5W J 1
R719 CRD20TJ102T RES , CARBON 1K OHM 1/5W J 1
R721 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R723 CRD20TJ222T RES , CARBON 2.2K OHM 1/5W J 1
R724 CRD20TJ102T RES , CARBON 1K OHM 1/5W J 1
R725 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R726 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R727 CRD20TJ102T RES , CARBON 1K OHM 1/5W J 1

Harman Consumer Group International HARMAN/KARDON AVR235/230
Front PCB assy
Ref# Component Description 1 Description 2 Qty
R728 CRD20TJ101T RES , CARBON 100 OHM 1/5W J 1
R730 CRD20TJ112T RES,CABON 1.1K OHM 1/5W 1
R731 CRD20TJ223T RES , CARBON 22K OHM 1/5W J 1
R732 CRD20TJ202T RES , CARBON 2K OHM 1/5W 1
R733 CRD20TJ272T RES , CARBON 2.7K OHM 1/5W J 1
R734 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R735 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R736 CRD20TJ272T RES , CARBON 2.7K OHM 1/5W J 1
R737 CRD20TJ100T RES , CARBON 10 OHM 1/5W J 1
R738 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R739 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R740 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R741 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R742 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R743 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R744 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R745 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R746 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R747 CRD20TJ103T RES , CARBON 10K OHM 1/5W J 1
R748 CRD20TJ223T RES , CARBON 22K OHM 1/5W J 1
R750 CRD20TJ223T RES , CARBON 22K OHM 1/5W J 1
R751 CRD