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1、 harman/kardon AVR320 AVR320 A/V DOLBY DIGITAL RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 FRONT PANEL CONTROLS.5 REAR PANEL CONNECTIONS.10 REMOTE CONTROL FUNCTIONS.12 TROUBLESHOOTING GUIDE.15 PROCESSOR RESET.15 UNIT EXPLODED VIEW.16 EXPLODED VIEW PARTS LI
2、ST.17 BULLETIN H/K2002-03.19 BULLETIN H/K2002-07.20 BULLETIN H/K2003-07.21 TECH TIP HKTT2003-01.23 TECH TIP HKTT2004-03.24 IDLE CURRENT ADJUSTMENT.28 BLOCK DIAGRAM.31 ELECTRICAL PARTS LIST.32 SEMICONDUCTOR PINOUTS77 SCHEMATICS.136 WIRING DIAGRAM.157 PACKAGE.158 harman/kardon, Inc. 250 Crossways Park
3、 Dr. Woodbury, New York 11797 Rev5 6/2005 RadioFans.CN Eachprecautioninthismanualshouldbefollowedduringservicing. Components identified with the IEC symbolin the parts list are special significance to safety. When replacing a component identified with , use only the replacement parts designated, or
4、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. S
5、ome 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
6、 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, ob
7、tain 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 fo
8、il, 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
9、 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 w
10、ith 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
11、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
12、a carpeted floor can generate static electricity sufficient to damage an ES devices. CAUTION : AVR320 AVR320 harman/kardon harman/kardon RadioFans.CN 2 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 partsintheun
13、it. 2. Be sure that any protective devices such as nonmetallic control knobs, insulating fish- papers,cabinetbacks,adjustmentand compartment covers or shields, isolation resistor-capacitynetworks,mechanical insulators, etc. Which were removed for the servicingareproperlyre-installed. Before returnin
14、g the unit to the user, perform the following safety checks : 3. Be sure that no shock hazard exists ; check for leakage currentusingSimpsonModel229LeakageTester,standard equipment item No. 21641, RCA Model WT540A or use alternate method asfollows : Plug the power cord directly Into a 120 volt AC re
15、ceptacle (do not use an Isolation Transformer for this test). Using two clip leads, connect a 1500ohms,10wattResistorparalleledbya0.15uFcapacitor,inserieswithallexposedmetalcabinetpartsandaknownearthground,such as a water pipe or conduit. Use a VTVM or VOM with 1000 ohms per volt, or higher sensitiv
16、ity 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,knobsandcontrolshafts,escutcheon,etc.)andmeasuretheACvoltagedropacrosstheresistor.(Thistestshouldbe pe
17、rformedwiththe0.35voltRMSormoreisexcessiveandindicatesapotentialshockhazardwhichmustbecorrectedbeforereturningthe unittotheowner. AVR320 AVR320 harman/kardon harman/kardon RadioFans.CN 3 4 TECHNICAL SPECIFICATIONS Technical Specifications Audio Section Stereo Mode Continuous Average Power (FTC) 65 W
18、atts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohms Five-Channel Surround Modes Power Per Individual Channel Front L press it again to turn the unit off. Note that the Power Indicator 3 surrounding the switch will turn green when the unit is on. 3 Power Indicator: This LED will
19、be lit 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 in operation, the indicator will turn green. 4 Headphone Jack:This jack may be used to listen to the AVR 320s output through a pair of headphones. Be certain that the headphones ha
20、ve a standard 1/4 stereo phone plug. Note that the main room speakers will automatically be turned off when the headphone jack is in use. 5 Dolby Mode Selector: Pressing this selec- tor button cycles the AVR through the various Dolby surround modes.The first press of the but- ton switches the surrou
21、nd mode to the last Dolby surround mode that was in use. Each sub- sequent press selects the next mode in the fol- lowing order: 6 DTS Surround Mode Selector: Pressing this selector button cycles the AVR through the DTS surround modes.The first press of the but- ton selects the last DTS surround mod
22、e that DOLBY 3 STEREO DOLBY DIGITAL DOLBY PRO LOGIC II MUSIC DOLBY PRO LOGIC II MOVIES DOLBY PRO LOGIC II EMULATION Front Panel Controls 1 Main Power Switch 2 System Power Control 3 Power Indicator 4 Headphone Jack 5 Dolby Mode Selector 6 DTS Surround Mode Selector 7 Logic 7 Mode Selector /Button 8
23、Tone Mode 9 Surround Mode Selector ) Tuning Selector ! Tuner Band Selector Set Button # Preset Station Selector $ Stereo Mode Selector /Button % Input Source Selector FM Mode Selector the tuner will automatically scan for the next station with an acceptable signal and then stop. ! Tuner Band Selecto
24、r: Pressing this but- ton will automatically switch the AVR 320 to the Tuner mode. Pressing it again will switch between the AM and FM frequency bands. (See page 31 for more information on the tuner.) Set Button:When making choices during the setup and configuration process, press this button to ent
25、er the desired setting as shown in the Main Information Display into the AVR 320s memory. # Preset Station Selector: Press this button to scroll up or down through the list or stations that have been entered into the preset memory. (See page 32 for more information on tuner programming.) $ Stereo Mo
26、de Selector /Button: Pressing this selector button cycles through the stereo modes, and it is also used to turn off all surround processing and place the unit in a traditional two-channel Stereo mode.The first press selects 5-Channel Stereo, the next press selects 8-Channel Stereo, and the third pre
27、ss selects “SURROUND OFF,” which is true Stereo. When an adjustment is being made using the Channel Select or Digital Select buttons, this button may be pressed to scroll through the available options. % Input Source Selector: Press this button to change the input by scrolling up or down through the
28、 list of input sources. FM Mode Selector: Press this button to select Auto or Manual tuning.When the button is pressed so that the AUTO Indicator X lights, the tuner will search for the next station with an acceptable signal when the Tuning Selector )uis pressed.When the but- ton is pressed so that
29、the AUTO Indicator X is not lit, each press of the Tuning Selector )uwill increase the frequency. (See page 31 for more information on using the tuner.) VMAx N appears when the Near Field VMAx mode is selected. (See page 27 for a description of the VMAx modes.) O Multiroom Indicator: This indicator
30、lights when the multiroom system is active. Note that it will remain lit when the multiroom system is in use even though the main room system is in the Standby mode and all other indicators are dark. (See page 36 for more information on the Multiroom system.) P OSD Indicator: When the OSD system is
31、in use, this indicator lights to remind you that the other indicators in this display do not function when the On-Screen Display is being used. Q Speaker/Channel Input Indicators:These indicators are multipurpose, indicating either the speaker type selected for each channel or the incoming data-sign
32、al configuration.The left, center, right, right surround and left surround speaker indicators are composed of three boxes, while the subwoofer is a single box.The center box lights when a “Small” speaker is selected, and the two outer boxes light when “Large” speakers are selected.When none of the b
33、oxes are lit for the center, surround or subwoofer channels, no speaker has been selected for one of those positions. (See page 22 for more infor- AVR320 AVR320 harman/kardon harman/kardon RadioFans.CN 9 FRONT PANEL INFORMATION DISPLAY Front Panel Information Display mation on configuring speakers.)
34、 The letters inside each of the center boxes display the active input channels. For standard analog inputs, only the L and R will light, indicating a stereo input.When a digital source is playing, the indicators will light to display the channels being received at the digital input.When the letters
35、flash, the digital input has been interrupted. (See pages 23 Amplifier is in protection mode Check speaker wire connections for shorts at receiver and light around power switch is reddue to possible shortspeaker ends Amplifier is in protection mode Contact your local Harman Kardon service depot due
36、to internal problems No sound from surround or Incorrect surround mode Select a mode other than Stereo center speakers Input is monaural There is no surround information from mono sources Incorrect configuration Check speaker mode configuration Stereo or Mono program material The surround decoder ma
37、y not create center- or 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 Remote sensor is obscured Make certain front panel sensor is visible to remote or connect r
38、emote 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 In
39、put is selected Processor Reset In the rare case where the units operation or the displays seem abnormal, the cause may involve the erratic operation of the systems memory or microprocessor. To correct this problem, first unplug the unit from the AC wall outlet and wait at least three minutes. After
40、 the pause, reconnect the AC power cord and check the units operation. If the system still malfunctions, a system reset may clear the problem. To clear the AVR 320s entire system memory including tuner presets, output level settings, delay times and speaker configuration data, first put the unit in
41、Standby by pressing the System Power Control Button 2. Next, press and hold the Tone Mode 8 and the FM Mode Selector buttons for three seconds. The unit will turn on automatically and display the RESET message in the Main Information Display Y. Note that once you have cleared the memory in this mann
42、er, it is necessary to reestablish all system configuration settings and tuner presets. NOTE: Resetting the processor will erase any configuration settings you have made for speakers, output levels, surround modes, digital input assignments as well as the tuner presets. After a reset the unit will b
43、e returned to the factory presets, and all settings for these items 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, co
44、nsult an authorized Harman Kardon service center. 15 TROUBLESHOOTING GUIDE Troubleshooting Guide AVR320 AVR320 harman/kardon harman/kardon RadioFans.CN 23 67 11 10 9 8 7 6 5 23 18 12 13 14 15 16 17 19 20 21 22 27 4 3 2 28 29 30 26 25 24 31 32 37 1 35 36 34 33 38 40 41 42 43 74 73 72 71 70 69 24 SCAL
45、E MODEL S CALE NONE m / m UNIT LES S; LES S; LES S; LES S; DWG. NO. NO. P ARTS TOLERANCE A VR 3 2 0 P ARTS NAME EXP LODED VIEW 76 77 75 65 67 68 66 19 47 57 58 56 52 55 48 49 50 63 62 61 64 59 51 52 42 54 46 44 45 78 AVR320 AVR320 harman/kardon harman/kardon 16 RadioFans.CN 17 RadioFans.CN J85000017
46、200 55199320XX STAND-BY TRANSFORMER 120V 55201700XX AVR320 AVR320 harman/kardon 18 RadioFans.CN harman/kardon Service Bulletin Service bulletin # H/K2002-03 April 2002 Warranty labor rate: MINOR repair To: All harman/kardon Service Centers Model: AVR320 Subject: Transformer Hum or Buzz In the event
47、you receive an AVR320 with the complaint There is a hum or buzz sound coming from the unit, first confirm the sound is coming from the receiver itself and not at the loudspeaker output, then replace the Power Transformer: 1) Remove the top cover (14 Phillips screws) 2) Locate the Power Transformer;
48、it is attached with (4) Phillips screws. 3) All connectors terminating the cable harness consisting of multiple conductors need to be unplugged from two main locations. Remove all plastic ties necessary to remove the harness. Most connectors have tabs on one side that should be depressed before the
49、connector can be unplugged. 4) Remove and replace the Power Transformer with h/k part# 55199320XX. 5) Replace the harness, add new cable ties, plug in all connectors, (replace Component Video PCB if it was removed): replace the top cover. 6) Test the unit and confirm the hum or buzz is no longer present. Model Serial Number (120v) Status
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