Harman Kardon HK3480 Service Manual

harman/kardon

HK3480

STEREO RECEIVER

SERVICE MANUAL

ESD WARNING…………………………....…….2

LEAKAGE TESTING………………..….…..…....3

SPECIFICATIONS ……………………………....4

FRONT PANEL CONTROLS ……………… ….5

REAR PANEL CONNECTIONS ………….....…8

REMOTE CONTROL FUNCTIONS ………..…10 TROUBLESHOOTING GUIDE…...……………12 PROCESSOR RESET……………………….…12 AMPLIFIER BIAS A DJUSTMENT……….…….13 BULLETIN HK2003-10……………………. …..14 BULLETIN HK2004-02……………………. …..16

harman/kardon, Inc.

250 Crossways Park Dr.

CONTENTS

DISASSEMBLY PROCEDURES………………17 EXPLODED VIEW …………………….………..20 BLOCK DIAGRAM…………..……….……….…2 1 FRONT PANEL DISPLAY..……….……….……22 IC DESCRIPTIONS/PI NOUTS…………………26 ELECTRICAL P A RTS LIST ………….. ………. . 40 PCB DRAWINGS……………………….…….…46 SCHEMATICS……………………………………48 WIRING DIAGRAM…………………………..….54 PACKAGE…………………………………….….55

Woodbur y, New York 11797

Rev2 2/2006

Each precautionin thismanual shouldbe 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.

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.

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.

CAUTION :

HK3480 harman/kardon

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.

Before returning the unit to the user, perform the following safety checks :

3. Be sure that no shock hazard exists ; check for leakage

current usingSimpson 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 paralleledby a 0.15uFcapacitor,in series withall exposed metalcabinet parts anda known earthground, 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, screwheads, knobsand controlshafts, escutcheon, etc.) andmeasure theAC voltagedrop across the resistor. (Thistest shouldbe

performed withthe 0.35 volt RMS or more is excessiveand indicates apotential shock hazard which must be corrected beforereturning the

unit to the owner.

HK3480 harman/kardon

18 TECHNICAL SPECIFICATIONS

HK 3480 TECHNICAL SPECIFICATIONS

Audio Section

Stereo Mode Continuous Average Power (FTC)

120 Watts per channel,20Hz–20kHz @ < 0.07% THD,both channels driven into 8 ohms 150 Watts per channel,20Hz–20kHz @ < 0.2% THD,both channels driven into 4 ohms

Input Sensitivity/Impedance

Linear (High Level) 200mV/47k ohms

Signal-to-Noise Ratio (IHF-A) 95dB Frequency Response

@ 1W (+0dB,–3dB) 10Hz – 110kHz

High Instantaneous Current Capability (HCC) ±45 amps

Transient Intermodulation Distortion (TIM) Unmeasurable

Rise Time 16µsec Slew Rate 40V/µsec

FM Tuner Section

Frequency Range 87.5 –108MHz Usable Sensitivity IHF 1.12µV /13.5dBf Signal-to-Noise Ratio Mono/Stereo 73/72dB Distortion Mono/Stereo 0.3/0.4% Stereo Separation 40dB @ 1kHz Selectivity ±400kHz, 65dB Image Rejection >80dB IF Rejection >100dB Tuner Output Level 1kHz, ±100kHz, Dev 500mV

AM Tuner Section

Frequency Range 520 – 1720kHz Signal-to-Noise Ratio >40dB Usable Sensitivity Loop 500µV/M Distortion 1kHz, 50% Mod 0.8% Selectivity ±10kHz, >25dB

Video Section

Television System NTSC/PAL/SECAM Signal Format Composite Input Level 1Vp-p Input Impedance 75 ohms,unbalanced Sync Polarity Negative Output Level 1Vp-p Output Impedance 75 ohms,unbalanced Video Frequency Response 10Hz – 10MHz

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)

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 and Power for the Digital Revolution are registered trademarks of Harman International Industries,Incorporated.

HK3480 harman/kardon

FRONT-PANEL CONTROLS 5

FRONT-PANEL CONTROLSFRONT-PANEL CONTROLS

SPEAKER 2

SPEAKER 1

PHONO

VID 1

TAPE M.

VID 2

PRESET

VID 3

AUTO TUNED STEREO

VMAx

79)!# %

(

20 22

242526

HK 3480

1 System Power Control 2 Power Indicator 3 Headphone Jack 4 Mute 5 Speaker 1 Selector 6 Phono Input Selector 7 Speaker 2 Selector 8 T-Mon Input Selector 9 Tuning Button

) CD Input Selector ! Video 1 Input Selector @ Preset Scan # Video 2 Input Selector $ Video 3 Input Selector % Preset Selector ^ VMAx Selector & FM/AM Selector * Sleep Button

( FM Mode Selector Ó Bass Control Ô Treble Control  Video 3 Audio/Video Input Ò Balance Control Ú Volume Control Û Information Display Ù Remote Sensor Window

1 System Power Control: Press this button to turn

on the HK 3480; press it again to tur n the unit off.The

Power Indicator2above the switch will initially turn

red as the HK 3480 performs a self-check, and it will change to blue when the unit is on and ready for use.

2 Power Indicator: This LED will light in amber when the unit is in the Standby mode to signal that the unit is ready to be turned on.When the unit is turned on, the indicator will briefly turn red,and then change to blue.A red indicator during normal operation means that the unit is in the Protect mode, and should be turned off and then checked for a possible speaker-wire short circuit.

3 Headphone Jack: This jack may be used to listen to the HK 3480’s output through a pair of headphones. Be certain that the headphones have a standard 1⁄4" stereo phone plug.

4 Mute: Press this button to momentarily silence the speaker output of the HK 3480.The message MUTE will flash in the Main Information Display

B, and the Mute Indica tor K will blink. 5 Speaker 1 Selector: Press this button to

turn the

speakers connected to the

Speaker 1

Output

Terminals

‹ on or off.

6 Phono Input Selector: Press this button to select the output of a turntable that is connected to the Phono Inputs™.

7 Speaker 2 Selector: Press this button to

turn

the speakers connected to the

Speaker 2

Output

Terminals

› on or off.

8 T-Mon Input Selector: Press this button to listen to the output of a tape recorder connected to the

Tape Monitor Inputs¢. The dot to the left of the Tape Monitor Input Indicator D will flash to indi-

cate that the input source is being monitored when the HK 3480 is connected to a three-head tape deck or another unit with off-head playback. See page 15 for more information on monitoring tape recordings.

9 Tuning Button: Press the left side of the button to tune lower-frequency stations and the right side of the button to tune higher-frequency stations.When a station with a strong signal is tuned, the

Tuned Indicator I

will light.A brief (1/2-second) press of the button will manually tune to the next frequency increment, while pressing and holding the button for a longer period will automatically tune to the next station with a signal strong enough for acceptable reception.

) CD Input Selector: Press this button to listen to the output of a CD player connected to the

Audio Inputs

£.

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.

HK3480 harman/kardon

FRONT-PANEL CONTROLS

6 FRONT-PANEL CONTROLS

! Video 1 Input Selector: Press this button to listen to and/or view the output of a device connected to the Video 1 Inputs §.

@ Preset Scan: Press this button to automatically scan through the stations that have been programmed in the HK 3480’s memory.The tuner will play five seconds of each station before moving to the next preset station.To stop the scan when the desired station is heard, press the button again. If no preset stations have been programmed into the HK 3480’s memory, the message

0 PRESET will flash in the Main

Information Display

B when this button is pressed. (See page 15 for more information on the tuner memory system.)

# Video 2 Input Selector: Press this button to lis- ten to and/or view the output of a device connected to the

Video 2 Inputs •.

$ Video 3 Input Selector: Press this button to listen to and/or view the output of a device connected to the

Video 3 Inputs ª  on either the front or rear panel. If devices are connected to both the frontand rear-panel

Video 3 Inputs ª ,then the

device connected to the rear-panel

Video 3 Inputs

ª will be selected first, as indicated by the dot to the left of the

Video 3 Input Indicator D being steadily

lit.To select the device connected to the front-panel

Video 3 Inputs ,press the Video 3 Input Selector $ again so that the dot to the left of the Video 3

Input Indicator

D flashes. Each subsequent press of

the

Video 3 Input Selector $ will toggle between

the front and rear

Video 3 Inputs ª .

% Preset Selector: Press this button to step up or

down through the list of stations that has been entered into the preset memory.If no preset stations have been programmed into the HK 3480’s memory, the message

0 PRESET will flash in the Main Information Display B when this button is pressed. (See page 15 for more infor mation on tuner programming.)

^ VMAx Selector: Press this button to engage VMAx processing of a stereo input.The

VMAx Mode

Indicator

A will light, and you will notice a wider, more spacious sound field. In order to obtain maximum benefit, you should be seated midway between the two loudspeakers,and the same distance from the speakers as the speakers are from each other. The speakers must be placed facing parallel and evenly with each other so that their baffles are in the same plane.Press the button again to return to Stereo mode.

& FM/AM Selector: Press this button to select the tuner as the input to the receiver. Press the left side of this button to select the FM frequency band, or the right side to select the AMfrequency band.

* Sleep Button: Press this button to place the unit in the Sleep mode.Each press of the button selects the amount of time that will remain before the unit automatically goes into the Standby mode,as indicated by the

Sleep Timer C, in the following order:

( FM Mode Selector: Press this button to select the Auto Stereo or Mono mode for FM tuning. In the Auto Stereo mode,the

Auto Indicator J and Stereo

Indicator

will light, and stereo reception will be provided when stations are transmitting stereo signals. In the Mono mode,the left and right signals from stereo broadcasts will be mixed together and reproduced through all channels.Select Mono mode for better reception of weak signals.

Ó Bass Control: Turn this control to modify the lowfrequency output of the left/right channels by as much as ±10dB.Set this control to a suitable position for your taste and room acoustics.

Ô Treble Control: Turn this control to modify the high-frequency output of the left/right channels by as much as ±10dB.Set this control to a suitable position for your taste and room acoustics.

 Video 3 Audio/Video Inputs: The front-panel Video 3 Audio/Video Inputs  are convenient for

connecting devices that will only be used temporarily, such as when you wish to view vacation videos directly from the camera. Connect these jacks to the PLAY/ OUT jacks of an audio or video device,such as a camcorder or video-game console.To select the frontpanel inputs,press the

Video 3 Input Selector $ repeatedly until the dot to the left of the Video 3 Input Indicator

D flashes.In order to view the video signal of a video device connected to this input, remember to connect the

Video Monitor Output ·

to the video input of your TV or video display. Ò Balance Control: Turn this control to change the

relative volume for the front left/right channels. Ú Volume Control: Turn the knob clockwise to

increase volume,counterclockwise to decrease volume.When the unit has been muted by pressing the

Mute Button 4®, the message MUTE will

flash in the

Main Information Display B, and the

Mute Indicator K will blink.

Û Information Display: This display delivers mes- sages and status indications to help you operate the receiver.

Ù Remote Sensor Window:The sensor behind this window receives infrared signals from the remote control.Aim the remote at this area and do not block or cover it unless an external remote sensor is installed.

min80min70min60min50min

min

min20min10min

OFF

HK3480 harman/kardon

FRONT-PANEL INFORMATION DISPLAY

FRONT-PANEL INFORMATION DISPLAY 7

SPEAKER 2

SPEAKER 1

PHONO

VID 1

TAPE M.

VID 2

PRESET

VID 3

AUTO TUNED STEREO

VMAx

MUTE

SLEEP

MEMORY

F E

IJK

A B C

A VMAx Mode Indicator B Main Information Display C Preset Number/Sleep Timer D Input Indicators

E Sleep Indicator F Preset Indicator G Memory Indicator H Stereo Indicator

I Tuned Indicator J Auto Indicator K Mute Indicator L Speaker Selection Indicators

A VMAx Mode Indicator: This indicator lights when

the VMAx mode is in use. (See page 14 for a description of the VMAx Mode.)

B Main Information Display: This display shows messages relating to the status,input source,tuner or other aspects of the HK 3480’s operation.

C Preset Number/Sleep Timer:When the tuner is in use,these numbers indicate the specific preset memory location in use.(See page 15 for more information on preset stations.) When the Sleep function is in use,these numbers show how many minutes remain before the unit goes into the Standby mode.

D Input Indicators: The dot to the left of the name of the device that is currently the source input for the HK 3480 will light.

When the device connected to the

Tape Monitor

Inputs

¢ has been selected, the dot to the left of

the

Tape Monitor Input Indicator D will flash to indicate that you are hearing the signal the HK 3480 is receiving from the device connected to the

Tape

Monitor Inputs

¢.The dot to the left of the Input

Indicator

D for the last-selected source input will remain lit. See page 15 for more infor mation on monitoring tape recordings.

E Sleep Indicator: This indicator lights when the Sleep function is in use.The numbers in the Preset Number/Sleep Timer Indicators will show the minutes remaining before the HK 3480 goes into the Standby mode.(See page 14 for more information on the Sleep function.)

F Preset Indicator: This indicator lights when the tuner is in use to show that the

Preset Number/

Sleep Timer

C is showing the station’s preset memory number.(See page 15 for more information on tuner presets.)

Memory Indicator: This indicator flashes when entering presets and other information into the tuner’s memory.

H Stereo Indicator: This indicator lights when an FM station is being tuned in stereo.

Tuned Indicator:

This indicator lights when a station is being received with sufficient signal strength to provide acceptable listening quality.

J Auto Indica tor: This indicator lights when the tuner’s Auto Stereo mode is in use.

K Mute Indicator: This indicator flashes to remind you that the HK 3480’s output has been silenced by pressing the

Mute Button 4®. Press the Mute button again to return to the previously selected output level.

L Speaker Selection Indicators: The dot to the left of the indicator for each speaker pair will light when that pair is active.Press the

Speaker 1 5 or

Speaker 2 7 selectors to activate either or both

pairs of speakers.

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.

HK3480 harman/kardon

REAR-PANEL CONNECTIONS

8 REAR-PANEL CONNECTIONS

120 280

3480

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.

‚

⁄

∞

•

™

£¡

‹

ﬂ°·b a ‡

ﬁ

›

¡ Phono Ground ™ Phono Inputs £ CD Audio Inputs ¢ Tape Monitor Play/In ∞ Tape Monitor Record/Out

§ Video 1 Audio/Video Play/In ¶ Video 1 Audio/Video Record/Out

• Video 2 Audio/Video Inputs

ª Video 3 Audio/Video Inputs ‚ Preamp Out ⁄ Main In ¤ Subwoofer Out ‹ Speaker 1 Terminals › Speaker 2 Terminals ﬁ Accessory Outlets ﬂ Power Cable

‡ Remote IR Out ° Remote IR In

· Video Monitor Output a AM Antenna b FM Antenna

¡ Phono Ground: Connect the ground wire from

a turntable to this terminal to reduce system hum. ™ Phono Inputs: Connect the outputs of your

turntable or tonearm to these jacks.Only Moving Magnet (MM)-type cartridges may be used.

£ CD Audio Inputs: Connect these jacks to the output of a compact disc player or CD changer.

¢ Tape Monitor Play/In: Connect these jacks to the Play/Out jacks of an audio recorder.

∞ Tape Monitor Record/Out: Connect these jacks to the Rec/In jacks of an audio recorder.

NOTE: When these jacks are connected to a threehead recorder or another device with off-head playback, it will be possible to monitor the source being recorded.

§ Video 1 Audio/Video Play/In: Connect these jacks to the PLAY/OUT jacks of an audio or video device,such as a VCR or DVD player.In order to view the video signal of a video device connected to this input, remember to connect the

Video Monitor

Output

· to the video input of your TV or video

display. ¶ Video 1 Audio/Video Record/Out: Connect

these jacks to the Rec/In jacks of an audio or video recorder.

• Video 2 Audio/Video Inputs: Connect these jacks to the PLAY/OUT jacks of an audio or video device,such as a VCR or DVD player.In order to view the video signal of a video device connected to this input, remember to connect the

Video Monitor

Output

· to the video input of your TV or video

display.

ª Video 3 Audio/Video Inputs: Connect these jacks to the PLAY/OUT jacks of an audio or video device,such as a VCR or DVD player.In order to view the video signal of a video device connected to this input, remember to connect the

Video Monitor

Output

· to the video input of your TV or video

display. ‚ Preamp Out: These jacks provide an output for

the left and right channels to an optional external amplifier. In nor mal operation, unless an external power amplifier is used, the jumper pins should remain connected between these jacks and the

Main In Jacks ⁄. ⁄ Main In: These jacks are the input to the HK 3480’s

power amplifier.Unless an external power amplifier is used, the jumper pins should remain connected between these jacks and the

Preamp Out Jacks‚.

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.

HK3480 harman/kardon

REAR-PANEL CONNECTIONS 9

REAR-PANEL CONNECTIONS

¤ Subwoofer Out: Connect these jacks to the line-level inputs of a powered subwoofer. If an external subwoofer amplifier is used, connect these jacks to the subwoofer amplifier inputs.When a single, mono subwoofer is used, or if the subwoofer or its amplifier has only a single line-level input jack, make the connection to the bottom jack on the HK 3480.

‹ Speaker 1 Terminals: Connect these ter minals to the appropriate terminals on your speakers.

› Speaker 2 Terminals: Connect these ter minals to the appropriate terminals on your speakers.

ﬁ Accessor y Outlets: These outlets may be used to power low-current-draw devices such as CD players 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.

· Video Monitor Output: Connect this jack to the composite video input of your TV or video display device.Doing so will enable you to view the video signal of a properly connected video source device, when that source input is selected.When an audioonly source is selected, the

Video Monitor Output

· will not transmit a video signal. a AM Antenna: Connect theAM loop antenna

supplied with the receiver to these terminals.If an external AM antenna is used, make connections to the

AM and GND terminals in accordance with the

instructions supplied with the antenna. b FM Antenna: Connect an indoor or external FM

antenna to this terminal.

HK3480 harman/kardon

10 REMOTE CONTROL FUNCTIONS

REMOTE CONTROL FUNCTIONS

å Main Power On ∫ Main Power Off ç Source Selectors ∂ Preset Up/Down ≠ Transport Controls ƒ Disc Skip © Sleep Button ˙ Dimmer Button î Tuning ∆ Direct Button ˚ Numeric Keys ¬ Auto Preset µ Secondary Control Cover Ñ Clear Button ø Memory Button π Master Volume œ Preset Scan Button ® Mute Button ß FM Mode Button † VMAx Selector Ü Enter Button √ Tuning Up/Down ∑ Speaker 1 Selector ≈ Speaker 2 Selector ¥ Transmitter Window

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 www.harmankardon.com.

3480

VMAx

∫

∂

≠

≈

†

∑

√

∆

HK3480 harman/kardon

REMOTE CONTROL FUNCTIONS 11

REMOTE CONTROL FUNCTIONS

å Main Power On: When the HK 3480 is in the Standby mode,as indicated by the

Power Indicator

2 glowing amber,press this button to turn the HK 3480 on.

∫ Main Power Off: When the HK 3480 is turned on, press this button to place it in the Standby mode. In this condition, the unit is still connected to AC Power.

ç Source Selectors:Press these buttons to select an input source for the HK 3480.

NOTE: The first press of the Video 3 Source Selector ç will select the device connected to the rear-panel

Video 3 Audio/Video Inputsª.Press the Video 3 Source Selector

ç again until the dot to the left of the

Video 3 Input Indicator D flashes to select the device connected to the front-panel

Video 3 Audio/Video

Inputs

.Each additional press of the Video 3 Source

Selector

ç will toggle between the front- and rear-panel

Video 3 Audio/Video Inputsª. ∂ Preset Up/Down:When the tuner is in use, these

buttons scroll through the stations that have been programmed into the HK 3480’s

memory.These buttons

also control the track Skip

Up/Down on compatible

Harman Kardon compact disc players/changers. ≠ Transport Controls:These buttons are used to

control the Play,Stop,Pause and Record functions on compatible Harman Kardon CD/DVD players/changers and CD recorders.

ƒ Disc Skip:These buttons do not have any func- tions when controlling the HK 3480, but they operate the Disc Skip functions of compatible Harman Kardon CD/DVD changers.

© Sleep Button: Press this button to place the unit in the Sleep mode.Each press of the button selects the amount of time that will remain before the unit will automatically go into the Standby mode,as shown in the

Sleep Timer C,in the following order:

˙ Dimmer Button: Press this button to dim the

front-panel displays and indicators.The first press of the button will dim the displays to one-half normal brightness and turn off the blue light inside the Volume Control Ú,but the Power Indica tor 2 will remain lit.The next press of the Dimmer Button ^ will turn off all displays,including the light inside the

Volume Control Ú,but the Power Indica tor

will remain lit to remind you that the unit is turned on. Press the button again to retur n the display to normal brightness.When the panel is dimmed, it will

return to normal brightness after the unit is turned off, then on again.

î Tuning: Press these buttons to tune up or down through a selected frequency band.A brief (1⁄2-second) press of the button will manually tune to the next frequency increment, while pressing and holding the button for a longer period will automatically tune to the next station with a signal strong enough for acceptable reception.

∆ Direct Button: Press this button to select a radio station by entering its frequency using the

Numeric

Keys

K. (See page14 for more information.)

˚ Numeric Keys:These buttons serve as a 10-

button numeric keypad to enter tuner preset positions or to tune stations directly.

¬ Auto Preset: When the tuner and FM band have been selected, this button may be used to automatically program the tuner presets for all active stations.To start the auto preset scan, press and hold the button. Note that the

Memory G and Preset F indicators will flash.After a few seconds,the tuner will start to “look” for active stations,as shown by increasing frequency numbers in the

Main Information Display B. Release the button and note that the tuner will briefly stop at each active station and add a preset number to the memory.If the FM tuner finds fewer than 30 FM stations with acceptable signal strength, the Auto Preset tuning will scan two more cycles or until the remaining vacant preset memory spaces have been filled with those found in the first scan.The scan will stop when all 30 preset memory spaces have been filled or when three scans through the band have been completed.

µ Secondary Control Cover: This sliding cover normally is in the “up”position so that it hides the secondary controls.To access these controls,place your thumb on the small recessed area at the top center of the control, and gently press the cover down and toward you.

Ñ Clear Button:This button is used to clear preset memory information for the HK 3480’s tuner. (See page 15 for more information on tuner presets.)

ø Memory Button: Press this button to open a memory position that stores a preset location for the HK 3480’s tuner.(See page15 for more information on tuner presets.)

π Master Volume: Press these buttons to raise or lower the HK 3480’s volume.

œ Preset Scan Button: Press this button to auto- matically scan through the list of stations that are programmed into the HK 3480’s tuner memory.When the button is pressed, each preset station will play

for five seconds before the next station is selected. Press the button again when the desired station is heard, to stop the preset scan.

® Mute Button: Press this button to momentarily silence the HK 3480.

ß FM Mode Button: Press this button when the tuner is in use in the FM band to switch to monaural reception if the station is weak and noisy.(See page14 for more information.)

† VMAx Selector: Press this button to engage VMAx processing of a stereo input.The

VMAx Mode

Indicator

Ü Enter Button:This button has no function on the HK 3480, but may be used as the Enter key for a compatible Harman Kardon DVD Player or as the Random Play button for a compatible CD Player. See page 16 for more information on using the remote to control other devices.

√ Tuning Up/Down:When the tuner is in use,these buttons will tune up or down through the selected frequency band.A brief (1⁄ 2-second) press of the button will manually tune to the next frequency increment, while pressing and holding the button for a longer period will automatically tune to the next station with a signal strong enough for acceptable reception.These buttons will also control Fast Forward and Fast Reverse (or Rewind) for compatible Harman Kardon compact disc players/ changers.

∑ Speaker 1 Selector: Press this button

to turn the

speakers connected to the

Speaker 1

Output

Terminals

‹ on or off.

≈ Speaker 2 Selector: Press this button

to turn the

speakers connected to the

Speaker 2

Output

Terminals

› on or off.

¥ Transmitter Window: Point this area of the remote toward the receiver when using the remote.

min80min70min60min50min

min

min20min10min

OFF

HK3480 harman/kardon

TROUBLESHOOTING GUIDE 17

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 necessar y

Room lighting is not overly bright Cassette or CD sounds distorted Cassette deck or CD player has not been plugged into the

Phono Input ™

(only use the outputs of a turntable or tone arm with the Phono Input ™) Turntable sounds distorted Turntable has been plugged into the

Phono Input ™,

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 TVor video display,and that the TV is turned on and the

proper input on the TV has been selected

HK3480 harman/kardon

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 sour ce for any prol o ng ed p er i od o f ti m e.

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 ret urn to normal operation. When the system is reset in this fashion, all tu ne r pre s et s 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.

HK3480 harman/kardon

HK3480 harman/kar don

harman/kardon Service Bulletin

Service bulletin # H/K2003-10 December 2003 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 impor tant that the var ious screws do not get mixed up and inserted in other loc ations upon reassembly. Make

note or label eac h removed screw set; keep them apart from ot her screw sets.

1) Remove t he 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 t he (10) Ph illips screws holdin g 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.

Warranty labor rate: MAJOR repair

HK3480 harman/kar don

Model

AVR130

AVR230

AVR330

HK3380

HK3480

Serial Number

120V

AN0006-01000

AN0006-13800 AN0006-13801

and above

AN0007-01000

AN0007-11400 AN0007-11401

and above

AN0008-01000

AN0008-08524 AN0008-08525

and above

AN0015-01000

AN0015-02728 AN0015-02729

and above

AN0016-01000

to AN0016-01864 AN0016-01865

and above

STATUS ACTION