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harman/kardon
HK3480
STEREO RECEIVER
SERVICE MANUAL
CONTENTS
ESD WARNING.........................................2 DISASSEMBLY PROCEDURES..................17
LEAKAGE TESTING....................................3 EXPLODED VIEW ....................................20
SPECIFICATIONS .....................................4 BLOCK DIAGRAM.....................................21
FRONT PANEL CONTROLS .................. ....5 FRONT PANEL DISPLAY............................22
REAR PANEL CONNECTIONS ....................8 IC DESCRIPTIONS/PINOUTS.....................26
REMOTE CONTROL FUNCTIONS ..............10 ELECTRICAL PARTS LIST .........................40
TROUBLESHOOTING GUIDE.....................12 PCB DRAWINGS......................................46
PROCESSOR RESET...............................12 SCHEMATICS..........................................48
AMPLIFIER BIAS ADJUSTMENT.................13 WIRING DIAGRAM....................................54
BULLETIN HK2003-10......................... .....14 PACKAGE...............................................55
BULLETIN HK2004-02......................... .....16
harman/kardon, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797 Rev1 8/2004
HK3480 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
HK3480 harman/kardon
Before returning the unit to the user, perform the following safety checks :
1. Inspect all lead dress to make certain that
leads are not pinched or that hardware is not
lodged between the chassis and other metal
parts in the unit.
2. Be sure that any protective devices such as
nonmetallic control knobs, insulating fish-
papers, cabinet backs, adjustment and
compartment covers or shields, isolation
resistor-capacity networks, mechanical
insulators, etc. Which were removed for the
servicing are properly re-installed.
3. Be sure that no shock hazard exists ; check for leakage
current using Simpson Model 229 Leakage Tester, standard
equipment item No. 21641, RCA Model WT540A or use
alternate method as follows : Plug the power cord directly
Into a 120 volt AC receptacle (do not use an Isolation
Transformer for this test). Using two clip leads, connect a
1500 ohms, 10watt Resistor paralleled by a 0.15uF capacitor, in series with all exposed metal cabinet parts and a known earth ground, such
as a water pipe or conduit. Use a VTVM or VOM with 1000 ohms per volt, or higher sensitivity to measure the AC voltage drop across the
resistor. (See diagram) Move the resistor connection to each exposed metal part having a return path to the chassis (antenna, metal,
cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor. (This test should be
performed with the 0.35 volt RMS or more is excessive and indicates a potential shock hazard which must be corrected before returning the
unit to the owner.
3
HK3480 harman/kardon
HK 3480 TECHNICAL SPECIFICATIONS
Audio Section FM Tuner Section
Stereo Mode Frequency Range 87.5 108MHz
Continuous Average Power (FTC) Usable Sensitivity IHF 1.12µV/13.5dBf
120 Watts per channel, 20Hz20kHz Signal-to-Noise Ratio Mono/Stereo 73/72dB
@ < 0.07% THD, both channels driven into 8 ohms Distortion Mono/Stereo 0.3/0.4%
150 Watts per channel, 20Hz20kHz Stereo Separation 40dB @ 1kHz
@ < 0.2% THD, both channels driven into 4 ohms Selectivity ±400kHz, 65dB
Input Sensitivity/Impedance Image Rejection >80dB
Linear (High Level) 200mV/47k ohms IF Rejection >100dB
Tuner Output Level 1kHz, ±100kHz, Dev 500mV
Signal-to-Noise Ratio (IHF-A) 95dB
Frequency Response AM Tuner Section
@ 1W (+0dB, 3dB) 10Hz 110kHz Frequency Range 520 1720kHz
High Instantaneous Signal-to-Noise Ratio >40dB
Current Capability (HCC) ±45 amps Usable Sensitivity Loop 500µV/M
Distortion 1kHz, 50% Mod 0.8%
Transient Intermodulation
Selectivity ±10kHz, >25dB
Distortion (TIM) Unmeasurable
Rise Time 16µsec
Video Section
Slew Rate 40V/µsec Television System NTSC/PAL/SECAM
Signal Format Composite
Input Level 1Vp-p
Depth measurement includes knobs, buttons and terminal connections. Input Impedance 75 ohms, unbalanced
Height measurement includes feet and chassis. Sync Polarity Negative
All features and specifications are subject to change without notice. Output Level 1Vp-p
Output Impedance 75 ohms, unbalanced
Harman Kardon and Power for the Digital Revolution are Video Frequency Response 10Hz 10MHz
registered trademarks of Harman International Industries, Incorporated.
General
Power Requirement AC 120V/60Hz
Power Consumption 3W standby, 280W maximum
(both channels driven)
Dimension (Max) (Product) (Shipping)
Width 17.4 inches (442mm) 21.5 inches (545mm)
Height 6.6 inches (168mm) 9.9 inches (251mm)
Depth 15 inches (382mm) 17.9 inches (455mm)
Weight 23.0 lb (10.44kg) 27.3 lb (12.39kg)
18 TECHNICAL SPECIFICATIONS 4
HK3480 harman/kardon
FRONT-PANEL CONTROLS
26 25 24
HK 3480
SPEAKER 1 AUTO TUNED STEREO PRESET PHONO VID 1
FM VID 2
SPEAKER 2
AM VID 3
VMAx CD TAPE M.
23
2 4 6 8 ) @ $ ^ * 21
1 3 5 7 9 ! # % & ( 20 22
NOTE: To make it easier to follow the instructions that refer to this illustration, a larger copy may be downloaded from the Product Support section for this product
at www.harmankardon.com.
1 System Power Control ) CD Input Selector ( FM Mode Selector
2 Power Indicator ! Video 1 Input Selector Ó Bass Control
3 Headphone Jack @ Preset Scan Ô Treble Control
4 Mute # Video 2 Input Selector Video 3 Audio/Video Input
5 Speaker 1 Selector $ Video 3 Input Selector Ò Balance Control
6 Phono Input Selector % Preset Selector Ú Volume Control
7 Speaker 2 Selector ^ VMAx Selector Û Information Display
8 T-Mon Input Selector & FM/AM Selector Ù Remote Sensor Window
9 Tuning Button * Sleep Button
1 System Power Control: Press this button to turn 4 Mute: Press this button to momentarily silence the cate that the input source is being monitored when
on the HK 3480; press it again to turn the unit off. The speaker output of the HK 3480. The message the HK 3480 is connected to a three-head tape
Power Indicator 2 above the switch will initially turn MUTE will flash in the Main Information Display deck or another unit with off-head playback. See
red as the HK 3480 performs a self-check, and it will B, and the Mute Indicator K will blink. page 15 for more information on monitoring tape
change to blue when the unit is on and ready for use. recordings.
5 Speaker 1 Selector: Press this button to turn the
2 Power Indicator: This LED will light in amber speakers connected to the Speaker 1 Output 9 Tuning Button: Press the left side of the button to
when the unit is in the Standby mode to signal that Terminals < on or off. tune lower-frequency stations and the right side of the
the unit is ready to be turned on. When the unit is button to tune higher-frequency stations. When a station
turned on, the indicator will briefly turn red, and then 6 Phono Input Selector: Press this button to select with a strong signal is tuned, the Tuned Indicator I
change to blue. A red indicator during normal the output of a turntable that is connected to the will light. A brief (1/2-second) press of the button will
operation means that the unit is in the Protect mode, Phono Inputs TM. manually tune to the next frequency increment, while
and should be turned off and then checked for a pressing and holding the button for a longer period will
7 Speaker 2 Selector: Press this button to turn automatically tune to the next station with a signal
possible speaker-wire short circuit.
the speakers connected to the Speaker 2 Output strong enough for acceptable reception.
3 Headphone Jack: This jack may be used to listen Terminals > on or off.
to the HK 3480's output through a pair of headphones. ) CD Input Selector: Press this button to listen
8 T-Mon Input Selector: Press this button to listen to the output of a CD player connected to the CD
Be certain that the headphones have a standard 1/4"
to the output of a tape recorder connected to the Audio Inputs £.
stereo phone plug.
Tape Monitor Inputs ¢. The dot to the left of the
Tape Monitor Input Indicator D will flash to indi-
5 FRONT-PANEL CONTROLS 5
HK3480 harman/kardon
FRONT-PANEL CONTROLS
! Video 1 Input Selector: Press this button to listen ^ VMAx Selector: Press this button to engage Ó Bass Control: Turn this control to modify the low-
to and/or view the output of a device connected to the VMAx processing of a stereo input. The VMAx Mode frequency output of the left/right channels by as much
Video 1 Inputs §. Indicator A will light, and you will notice a wider, as ±10dB. Set this control to a suitable position for
more spacious sound field. In order to obtain maxi- your taste and room acoustics.
@ Preset Scan: Press this button to automatically mum benefit, you should be seated midway between
scan through the stations that have been programmed the two loudspeakers, and the same distance from Ô Treble Control: Turn this control to modify the
in the HK 3480's memory. The tuner will play five sec- the speakers as the speakers are from each other. high-frequency output of the left/right channels by as
onds of each station before moving to the next preset The speakers must be placed facing parallel and much as ±10dB. Set this control to a suitable position
station. To stop the scan when the desired station is evenly with each other so that their baffles are in for your taste and room acoustics.
heard, press the button again. If no preset stations the same plane. Press the button again to return
have been programmed into the HK 3480's memory, Video 3 Audio/Video Inputs: The front-panel
to Stereo mode.
the message 0 PRESET will flash in the Main Video 3 Audio/Video Inputs are convenient for
Information Display B when this button is pressed. & FM/AM Selector: Press this button to select the connecting devices that will only be used temporarily,
(See page 15 for more information on the tuner mem- tuner as the input to the receiver. Press the left side of such as when you wish to view vacation videos directly
ory system.) this button to select the FM frequency band, or the from the camera. Connect these jacks to the PLAY/
right side to select the AM frequency band. OUT jacks of an audio or video device, such as a
# Video 2 Input Selector: Press this button to lis- camcorder or video-game console. To select the front-
ten to and/or view the output of a device connected to * Sleep Button: Press this button to place the unit panel inputs, press the Video 3 Input Selector $
the Video 2 Inputs ·. in the Sleep mode. Each press of the button selects repeatedly until the dot to the left of the Video 3
the amount of time that will remain before the unit Input Indicator D flashes. In order to view the video
$ Video 3 Input Selector: Press this button to automatically goes into the Standby mode, as indicated signal of a video device connected to this input,
listen to and/or view the output of a device connected by the Sleep Timer C, in the following order: remember to connect the Video Monitor Output ·
to the Video 3 Inputs ª on either the front or to the video input of your TV or video display.
90 80 70 60 50
rear panel. If devices are connected to both the front- min min min min min
and rear-panel Video 3 Inputs ª , then the 40
min
30
min
20
min
10
min
OFF Ò Balance Control: Turn this control to change the
device connected to the rear-panel Video 3 Inputs relative volume for the front left/right channels.
ª will be selected first, as indicated by the dot to the
left of the Video 3 Input Indicator D being steadily ( FM Mode Selector: Press this button to select Ú Volume Control: Turn the knob clockwise to
lit. To select the device connected to the front-panel the Auto Stereo or Mono mode for FM tuning. In the increase volume, counterclockwise to decrease
Video 3 Inputs , press the Video 3 Input Selector Auto Stereo mode, the Auto Indicator J and Stereo volume. When the unit has been muted by pressing
$ again so that the dot to the left of the Video 3 Indicator H will light, and stereo reception will be the Mute Button 4®, the message MUTE will
Input Indicator D flashes. Each subsequent press of provided when stations are transmitting stereo signals. flash in the Main Information Display B, and the
the Video 3 Input Selector $ will toggle between In the Mono mode, the left and right signals from Mute Indicator K will blink.
the front and rear Video 3 Inputs ª . stereo broadcasts will be mixed together and repro-
duced through all channels. Select Mono mode for Û Information Display: This display delivers mes-
% Preset Selector: Press this button to step up or better reception of weak signals. sages and status indications to help you operate the
down through the list of stations that has been entered receiver.
into the preset memory. If no preset stations have
Ù Remote Sensor Window: The sensor behind
been programmed into the HK 3480's memory,
this window receives infrared signals from the remote
the message 0 PRESET will flash in the
control. Aim the remote at this area and do not block
Main Information Display B when this button is
or cover it unless an external remote sensor is
pressed. (See page 15 for more information on tuner
installed.
programming.)
6 FRONT-PANEL CONTROLS 6
HK3480 harman/kardon
FRONT-PANEL INFORMATION DISPLAY
L K J I H G F E
SPEAKER 1 MUTE AUTO TUNED STEREO MEMORY PRESET PHONO VID 1
SLEEP FM VID 2
SPEAKER 2
AM VID 3
VMAx CD TAPE M.
A B C D
NOTE: To make it easier to follow the instructions that refer to this illustration, a larger copy may be downloaded from the Product Support section for this product
at www.harmankardon.com.
A VMAx Mode Indicator E Sleep Indicator I Tuned Indicator
B Main Information Display F Preset Indicator J Auto Indicator
C Preset Number/Sleep Timer G Memory Indicator K Mute Indicator
D Input Indicators H Stereo Indicator L Speaker Selection Indicators
A VMAx Mode Indicator: This indicator lights when Monitor Inputs ¢. The dot to the left of the Input I Tuned Indicator: This indicator lights when a sta-
the VMAx mode is in use. (See page 14 for a descrip- Indicator D for the last-selected source input will tion is being received with sufficient signal strength to
tion of the VMAx Mode.) remain lit. See page 15 for more information on provide acceptable listening quality.
monitoring tape recordings.
B Main Information Display: This display shows J Auto Indicator: This indicator lights when the
messages relating to the status, input source, tuner or E Sleep Indicator: This indicator lights when the tuner's Auto Stereo mode is in use.
other aspects of the HK 3480's operation. Sleep function is in use. The numbers in the Preset
K Mute Indicator: This indicator flashes to remind
Number/Sleep Timer Indicators will show the minutes
C Preset Number/Sleep Timer: When the tuner is you that the HK 3480's output has been silenced by
remaining before the HK 3480 goes into the Standby
in use, these numbers indicate the specific preset pressing the Mute Button 4 ®. Press the Mute
mode. (See page 14 for more information on the
memory location in use. (See page 15 for more infor- button again to return to the previously selected
Sleep function.)
mation on preset stations.) When the Sleep function is output level.
in use, these numbers show how many minutes F Preset Indicator: This indicator lights when the
L Speaker Selection Indicators: The dot to the
remain before the unit goes into the Standby mode. tuner is in use to show that the Preset Number/
left of the indicator for each speaker pair will light
Sleep Timer C is showing the station's preset
D Input Indicators: The dot to the left of the name when that pair is active. Press the Speaker 1 5 or
memory number. (See page 15 for more information
of the device that is currently the source input for the Speaker 2 7 selectors to activate either or both
on tuner presets.)
HK 3480 will light. pairs of speakers.
G Memory Indicator: This indicator flashes when
When the device connected to the Tape Monitor
entering presets and other information into the tuner's
Inputs ¢ has been selected, the dot to the left of
memory.
the Tape Monitor Input Indicator D will flash to
indicate that you are hearing the signal the HK 3480 H Stereo Indicator: This indicator lights when an FM
is receiving from the device connected to the Tape station is being tuned in stereo.
7 FRONT-PANEL INFORMATION DISPLAY 7
HK3480 harman/kardon
REAR-PANEL CONNECTIONS
b a · ° fl
3480
120 280
U.S. Patent Nos. 4,893,342, 4,910,779, 4,975,954, 5,034,983,
5,136,651, and 5,333,200 Cooper Bauck Transaural Stereo.
TM ¢ § · , ¤ >
¡ £ ¶ ª / < fi
NOTE: To make it easier to follow the instructions that refer to this illustration, a larger copy may be downloaded from the Product Support section for this product
at www.harmankardon.com.
¡ Phono Ground ª Video 3 Audio/Video Inputs Remote IR Out
TM Phono Inputs , Preamp Out ° Remote IR In
£ CD Audio Inputs / Main In · Video Monitor Output
¢ Tape Monitor Play/In ¤ Subwoofer Out a AM Antenna
Tape Monitor Record/Out < Speaker 1 Terminals b FM Antenna
§ Video 1 Audio/Video Play/In > Speaker 2 Terminals
¶ Video 1 Audio/Video Record/Out fi Accessory Outlets
· Video 2 Audio/Video Inputs fl Power Cable
¡ Phono Ground: Connect the ground wire from § Video 1 Audio/Video Play/In: Connect these ª Video 3 Audio/Video Inputs: Connect these
a turntable to this terminal to reduce system hum. jacks to the PLAY/OUT jacks of an audio or video jacks to the PLAY/OUT jacks of an audio or video
device, such as a VCR or DVD player. In order to device, such as a VCR or DVD player. In order to
TM Phono Inputs: Connect the outputs of your view the video signal of a video device connected view the video signal of a video device connected
turntable or tonearm to these jacks. Only Moving to this input, remember to connect the Video Monitor to this input, remember to connect the Video Monitor
Magnet (MM)-type cartridges may be used. Output · to the video input of your TV or video Output · to the video input of your TV or video
display. display.
£ CD Audio Inputs: Connect these jacks to the
output of a compact disc player or CD changer. ¶ Video 1 Audio/Video Record/Out: Connect , Preamp Out: These jacks provide an output for
these jacks to the Rec/In jacks of an audio or video the left and right channels to an optional external
¢ Tape Monitor Play/In: Connect these jacks to
recorder. amplifier. In normal operation, unless an external
the Play/Out jacks of an audio recorder.
power amplifier is used, the jumper pins should
· Video 2 Audio/Video Inputs: Connect these remain connected between these jacks and the
Tape Monitor Record/Out: Connect these jacks
jacks to the PLAY/OUT jacks of an audio or video Main In Jacks /.
to the Rec/In jacks of an audio recorder.
device, such as a VCR or DVD player. In order to
NOTE: When these jacks are connected to a three- view the video signal of a video device connected / Main In: These jacks are the input to the HK 3480's
head recorder or another device with off-head play- to this input, remember to connect the Video Monitor power amplifier. Unless an external power amplifier is used,
back, it will be possible to monitor the source being Output · to the video input of your TV or video the jumper pins should remain connected between these
recorded. display. jacks and the Preamp Out Jacks ,.
8 REAR-PANEL CONNECTIONS 8
HK3480 harman/kardon
REAR-PANEL CONNECTIONS
¤ Subwoofer Out: Connect these jacks to the · Video Monitor Output: Connect this jack to the
line-level inputs of a powered subwoofer. If an external composite video input of your TV or video display
subwoofer amplifier is used, connect these jacks to device. Doing so will enable you to view the video
the subwoofer amplifier inputs. When a single, mono signal of a properly connected video source device,
subwoofer is used, or if the subwoofer or its amplifier when that source input is selected. When an audio-
has only a single line-level input jack, make the only source is selected, the Video Monitor Output
connection to the bottom jack on the HK 3480. · will not transmit a video signal.
< Speaker 1 Terminals: Connect these terminals a AM Antenna: Connect the AM loop antenna
to the appropriate terminals on your speakers. supplied with the receiver to these terminals. If an
external AM antenna is used, make connections to
> Speaker 2 Terminals: Connect these terminals the AM and GND terminals in accordance with the
to the appropriate terminals on your speakers. instructions supplied with the antenna.
fi Accessory Outlets: These outlets may be used b FM Antenna: Connect an indoor or external FM
to power low-current-draw devices such as CD players antenna to this terminal.
or cassette decks. The power to these outlets remains
on as long as the receiver itself is on. When the
receiver is placed in the Standby mode, power to
these outlets is removed.
NOTE: The power consumption of the devices
plugged into these outlets should not exceed
100 watts.
fl Power Cable: Connect the AC plug to a non-
switched AC wall output.
Remote IR Out: This connection permits the IR
sensor in the receiver to serve other remote-controlled
devices. Connect this jack to the "IR In" jack on
Harman Kardon (or other compatible) equipment.
° Remote IR In: If the HK 3480's front-panel
IR sensor is blocked due to cabinet doors or other
obstructions, an external IR sensor may be used.
Connect the output of the sensor to this jack.
9 REAR-PANEL CONNECTIONS 9
HK3480 harman/kardon
REMOTE CONTROL FUNCTIONS
å Main Power On
Main Power Off
ç Source Selectors ¥
Preset Up/Down
Transport Controls
Disc Skip
© Sleep Button
Dimmer Button å
î Tuning
Direct Button
° Numeric Keys
¬ Auto Preset
µ Secondary Control Cover
Ñ Clear Button
ø Memory Button ç
Master Volume
oe Preset Scan Button
® Mute Button
ß FM Mode Button
VMAx Selector Ü
Ü Enter Button VMAx
Tuning Up/Down
Speaker 1 Selector ß
Speaker 2 Selector
¥ Transmitter Window ®
oe
NOTES: ©
· The function names shown here are each button's
feature when used with the HK 3480. Most buttons
have additional functions when used with other
devices. See page 16 for a list of these functions.
· To make it easier to follow the instructions that refer
to this illustration, a larger copy may be downloaded
from the Product Support section for this product at ø
www.harmankardon.com.
°
¬ Ñ
µ
3480
10 REMOTE CONTROL FUNCTIONS 10
HK3480 harman/kardon
REMOTE CONTROL FUNCTIONS
å Main Power On: When the HK 3480 is in the return to normal brightness after the unit is turned off, for five seconds before the next station is selected.
Standby mode, as indicated by the Power Indicator then on again. Press the button again when the desired station is
2 glowing amber, press this button to turn the heard, to stop the preset scan.
HK 3480 on. î Tuning: Press these buttons to tune up or
down through a selected frequency band. A brief ® Mute Button: Press this button to momentarily
Main Power Off: When the HK 3480 is turned (1/2-second) press of the button will manually tune silence the HK 3480.
on, press this button to place it in the Standby mode. to the next frequency increment, while pressing and
In this condition, the unit is still connected to AC Power. holding the button for a longer period will automatically ß FM Mode Button: Press this button when the
tune to the next station with a signal strong enough tuner is in use in the FM band to switch to monaural
ç Source Selectors: Press these buttons to select an for acceptable reception. reception if the station is weak and noisy. (See page 14
input source for the HK 3480. for more information.)
Direct Button: Press this button to select a radio
NOTE: The first press of the Video 3 Source Selector station by entering its frequency using the Numeric VMAx Selector: Press this button to engage
ç will select the device connected to the rear-panel Keys K. (See page 14 for more information.) VMAx processing of a stereo input. The VMAx Mode
Video 3 Audio/Video Inputs ª. Press the Video 3 Indicator A will light, and you will notice a wider,
Source Selector ç again until the dot to the left of the ° Numeric Keys: These buttons serve as a 10- more spacious sound field. In order to obtain maxi-
Video 3 Input Indicator D flashes to select the device button numeric keypad to enter tuner preset positions mum benefit, you should be seated midway between
connected to the front-panel Video 3 Audio/Video or to tune stations directly. the two loudspeakers, and the same distance from
Inputs . Each additional press of the Video 3 Source the speakers as the speakers are from each other.
Selector ç will toggle between the front- and rear-panel ¬ Auto Preset: When the tuner and FM band have The speakers must be placed facing parallel and
Video 3 Audio/Video Inputs ª. been selected, this button may be used to automatically evenly with each other so that their baffles are in
program the tuner presets for all active stations. To start the same plane. Press the button again to return to
Preset Up/Down: When the tuner is in use, these the auto preset scan, press and hold the button. Note Stereo mode.
buttons scroll through the stations that have been pro- that the Memory G and Preset F indicators will
grammed into the HK 3480's memory. These buttons flash. After a few seconds, the tuner will start to "look" Ü Enter Button: This button has no function on the
also control the track Skip Up/Down on compatible for active stations, as shown by increasing frequency HK 3480, but may be used as the Enter key for a
Harman Kardon compact disc players/changers. numbers in the Main Information Display B. compatible Harman Kardon DVD Player or as the
Release the button and note that the tuner will briefly Random Play button for a compatible CD Player. See
Transport Controls: These buttons are used to stop at each active station and add a preset number to page 16 for more information on using the remote to
control the Play, Stop, Pause and Record functions on the memory. If the FM tuner finds fewer than 30 FM control other devices.
compatible Harman Kardon CD/DVD players/changers stations with acceptable signal strength, the Auto Preset
and CD recorders. tuning will scan two more cycles or until the remaining Tuning Up/Down: When the tuner is in use, these
vacant preset memory spaces have been filled with buttons will tune up or down through the selected fre-
Disc Skip: These buttons do not have any func- those found in the first scan. The scan will stop when quency band. A brief (1/2-second) press of the button
tions when controlling the HK 3480, but they operate all 30 preset memory spaces have been filled or when will manually tune to the next frequency increment, while
the Disc Skip functions of compatible Harman Kardon three scans through the band have been completed. pressing and holding the button for a longer period will
CD/DVD changers. automatically tune to the next station with a signal strong
µ Secondary Control Cover: This sliding cover enough for acceptable reception. These buttons will
© Sleep Button: Press this button to place the unit normally is in the "up" position so that it hides the also control Fast Forward and Fast Reverse (or Rewind)
in the Sleep mode. Each press of the button selects secondary controls. To access these controls, place for compatible Harman Kardon compact disc players/
the amount of time that will remain before the unit will your thumb on the small recessed area at the top changers.
automatically go into the Standby mode, as shown in center of the control, and gently press the cover down
the Sleep Timer C, in the following order: and toward you. Speaker 1 Selector: Press this button to turn the
90 80 70 60 50 speakers connected to the Speaker 1 Output
min min min min min
Ñ Clear Button: This button is used to clear preset Terminals < on or off.
40 30 20 10 OFF
min min min min memory information for the HK 3480's tuner. (See
page 15 for more information on tuner presets.) Speaker 2 Selector: Press this button to turn the
speakers connected to the Speaker 2 Output
Dimmer Button: Press this button to dim the ø Memory Button: Press this button to open a Terminals > on or off.
front-panel displays and indicators. The first press of memory position that stores a preset location for the
the button will dim the displays to one-half normal HK 3480's tuner. (See page 15 for more information ¥ Transmitter Window: Point this area of the
brightness and turn off the blue light inside the on tuner presets.) remote toward the receiver when using the remote.
Volume Control Ú, but the Power Indicator 2
will remain lit. The next press of the Dimmer Button Master Volume: Press these buttons to raise or
^ will turn off all displays, including the light inside lower the HK 3480's volume.
the Volume Control Ú, but the Power Indicator
2 will remain lit to remind you that the unit is turned oe Preset Scan Button: Press this button to auto-
on. Press the button again to return the display to nor- matically scan through the list of stations that are
mal brightness. When the panel is dimmed, it will programmed into the HK 3480's tuner memory. When
the button is pressed, each preset station will play
11 REMOTE CONTROL FUNCTIONS 11
HK3480 harman/kardon
TROUBLESHOOTING GUIDE
This unit is designed for trouble-free operation. Most problems users encounter are due to operating errors. So, if you have a problem, first check this list for a possible solution.
If the problem persists, consult your authorized Harman Kardon service center.
If the problem is . . . Make sure that the . . .
No lights appear when POWER button is pressed Unit is plugged into a live outlet
No sound is heard Unit has not been muted
Correct input function selector button has been pressed
Volume is turned up
Speakers have been turned on using the Speaker Selectors
Headphones are not in use
Jumper pins are in place, unless an external amplifier is in use
No output from one or more channels Cables are not defective: check/replace speaker cables
Tuner sound has a large amount of interference, or Antenna is properly connected
The "Stereo" display is not illuminated, or Antenna is properly located
Tuner sound distorts and/or volume level is too low Antenna is set in the proper direction
Antenna is adequate to receive the desired station
Tuner is intermittent or continuously buzzing or hissing Unit is away from fluorescent lights, TVs, motors and
other electrical appliances
Remote does not function correctly Batteries are not weak, and replace them if necessary
Room lighting is not overly bright
Cassette or CD sounds distorted Cassette deck or CD player has not been plugged into the Phono Input TM
(only use the outputs of a turntable or tone arm with the Phono Input TM)
Turntable sounds distorted Turntable has been plugged into the Phono Input TM,
as the other inputs are not compatable with turntable signal levels
No video image Video source unit's video ouput is properly connected, the source is turned on and the correct video
input on the HK 3480 has been selected
Video Monitor Output · is connected to a TV or video display, and that the TV is turned on and the
proper input on the TV has been selected
Memory Backup
This product is equipped with a non-volatile EEPROM (Electrically Erasable and Programmable Read-Only
Memory) that preserves tuner presets and system configuration information without the unit being connected to
a main power source for any prolonged period of time.
Processor Reset
In the rare case where the unit's operation or the displays seem abnormal, the cause may involve the erratic
operation of the system's memory or microprocessor.
To correct this problem, first unplug the unit from the AC wall outlet and wait at least thirty minutes. After the
pause, reconnect the AC power cord and check the unit's operation. If the system still malfunctions, a system
reset may clear the problem. To reset the system, first turn the HK 3480 off by pressing the System Power
Control. Next, press and hold the front-panel Mute Button for at least 4 seconds. The Main Information Display
will briefly show the word RESET, and then return to normal operation. When the system is reset in this
fashion, all tuner presets will be lost and must be reentered. If the system is still operating incorrectly, there
may have been an electronic discharge or severe AC line interference that has corrupted the memory or
microprocessor. If these steps do not solve the problem, consult an authorized Harman Kardon service center.
12 TROUBLESHOOTING GUIDE 17
HK3480 harman/kardon
13
HK3480 harman/kardon
harman/kardon Service Bulletin
Service bulletin # H/K2003-10 December 2003 Warranty labor rate: MAJOR repair
To: All harman/kardon Service Centers
Models: AVR130, AVR230, AVR330, HK3380, HK3480
Subject: Volume Level Changes
On early versions of the AVR130,AVR230,AVR330,HK3380,HK3480, when the volume control is turned, the
volume level and display may be erratic, and not track accurately, or the level may progress in an unintended
direction. This may happen on a random basis and depends on where the volume control knob is positioned
after a volume adjustment. During a running production change, new volume encoders were installed.
In the event you receive an AVR model listed above with the complaint "The volume control on my
receiver does not track accurately when turned", perform the following procedure:
REPLACE VR74 (AVR130/230/330) or VR81 (HK3380/3480) VOLUME ENCODER
Note: It is important that the various screws do not get mixed up and inserted in other locations upon reassembly. Make
note or label each removed screw set; keep them apart from other screw sets.
1) Remove the top cover, (13) Phillips screws.
2) Remove the volume, bass, treble and balance knobs by pulling them straight out and off. If a tool is
necessary for removal of the smaller knobs, make sure the jaws are insulated to avoid knob damage.
3) Remove the (10) Phillips screws holding the front panel ass'y to the chassis: (6) at the bottom and (4) at
the sides.
4) Cut all plastic cable ties that would prevent you detaching the front panel ass'y from the chassis. Draw a
diagram if necessary, for a location reminder, to aid reassembly.
5) Unplug connector CN15 (6 cond) or CN89 (7 cond) at the left side of the unit. See below.
6) Remove single ground screw at the left side of the unit, near CN15 or CN89. (Black wire)
7) Unplug connector CN72 (32 cond) or CN81 (20 cond) on the DSP PCB, coming from the top of the front
panel ass'y. See below.
8) There should now be enough slack in the connecting cables to lift and detach the front panel ass'y from
the chassis. Pull the front panel as far away as the remaining connecting wires will allow, enough to tilt
and gain access to the rear of the Tone/Volume PCB. See illustration Page 2.
9) Remove the (10) screws or (9) screws holding the Tone/Volume PCB to the front panel.
10) Detach and pull back the PCB; unplug top connector CN84 (7 cond) or CN83 (4 cond) if necessary.
11) Remove and replace VR74 or VR81 (5 soldered pads) with hk part# HSR2A029Z.
12) Reassemble in reverse order, taking care to replace all connectors, cable ties, and ground screw.
13) Power up receiver, and test volume control to assure setting no longer changes settings by itself, or when
the volume knob is tapped.
14
HK3480 harman/kardon
Serial Number
Model STATUS ACTION
120V
AN0006-01000
Volume control may not track accurately when Change VR74
AVR130 to
turned; erratic operation Rotary encoder
AN0006-13800
AN0006-13801
AVR130 Modified By Factory NONE REQUIRED
and above
AN0007-01000
Volume control may not track accurately when Change VR74
AVR230 to
turned; erratic operation Rotary encoder
AN0007-11400
AN0007-11401
AVR230 Modified By Factory NONE REQUIRED
and above
AN0008-01000
Volume control may not track accurately when Change VR74
AVR330 to turned; erratic operation Rotary encoder
AN0008-08524
AN0008-08525
AVR330 Modified By Factory NONE REQUIRED
and above
AN0015-01000
Volume control may not track accurately when Change VR81
HK3380 to
turned; erratic operation Rotary encoder
AN0015-02728
AN0015-02729
HK3380 Modified By Factory NONE REQUIRED
and above
AN0016-01000
Volume control may not track accurately when Change VR81
HK3480 to
turned; erratic operation Rotary encoder
AN0016-01864
AN0016-01865
HK3480 Modified By Factory NONE REQUIRED
and above
15
HK3480 harman/kardon
harman/kardon Service Bulletin
Service bulletin # H/K2004-02 April 2004 Warranty labor rate: MINOR repair
To: All harman/kardon Service Centers
Model: HK3380/3480
Subject: Silence During Preset Scan - Upgrade
In the event you receive an HK3380 or HK3480 stereo receiver with the complaint: "When the Preset
Scan Function * is activated and the receiver cyles through the list of station presets, there is silence",
the unit is in need of a software upgrade.
The unit should be sent to the following authorized service center equipped to perform the software upgrade:
HARMAN CONSUMER GROUP DISTRIBUTION CENTER
TH
801 S. 75 AVE.
PHOENIX, AZ. 85043
Attn: Rodney Yee
Model Serial Number (120v) Serial Number (230v) Status Action (upgrade)
AN0015-01000 AN0017-01000
If Silence During Preset
HK3380 to