Harman-Kardon-AVR-135-Service-Manual(1)电路图 维修手册.pdf

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1、 harman/kardon AVR135 AVR135 6 X 40W 6.1 CHANNEL A/V RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 FRONT PANEL CONTROLS.5 REAR PANEL CONNECTIONS.7 REMOTE CONTROL FUNCTIONS.9 CONNECTIONS.12 OPERATION.14 TROUBLESHOOTING GUIDE.20 PROCESSOR RESET.20 DISASSEMBLY.

2、21 UNIT EXPLODED VIEW.24 AMP BIAS ADJUSTMENT.25 TECH TIP HK2003-01.26 BLOCK DIAGRAM.27 ELECTRICAL PARTS LIST.28 SEMICONDUCTOR PINOUTS.61 PCB DRAWINGS.102 SCHEMATICS108 WIRING DIAGRAM.114 PACKAGING.115 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev2 1/2006 RadioFans.CN 收音机爱 好

3、者资料库 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 parts with the same ratings or resistance, wattage

4、, 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 dam

5、aged 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 inci

6、dence 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

7、 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 ex

8、posure 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-propell

9、ed 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 conduct

10、ive 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 c

11、hassis 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 s

12、ufficient to damage an ES devices. CAUTION : AVR135 AVR135 harman/kardon RadioFans.CN 收音机爱 好者资料库 2 SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Measure leakage current to a known earth ground (wa

13、ter pipe, conduit, etc.) by connecting a leakage current tester between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn the AC

14、power switch on. Any current measured must not exceed o.5mA. ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. Device under test Test all exposed metal surfaces Also test with plug re

15、versed (Using AC adapter plug as required) AC Leakage Test Leakage current tester Reading should not be above 0.5mA Earth ground AVR135 harman/kardonAVR135 harman/kardon 3 RadioFans.CN 收音机爱 好者资料库 Audio Section Stereo Mode Continuous Average Power (FTC) 50 Watts per channel, 20Hz20kHz, 0.07% THD, bot

16、h channels driven into 8 ohms Six-Channel Surround Modes Power per Individual Channel Front L press it again to turn the unit off.The Power Indicator 3 turns blue when the unit is on. 4 Headphone Jack: This jack may be used to listen to the AVR 135s output through a pair of headphones. The speakers

17、will automatically be turned off when the headphone jack is in use. 5 Tone Mode: Pressing this button enables or dis- ables the Bass and Treble tone controls.When the but- ton is pressed so that TONE IN appears in the Lower Display Line , the Bass and Treble controls may be used to adjust the output

18、 signals. When the button is pressed once or twice so that the words TONE OUT appear in the Lower Display Line , the output signal will be “flat, ” no matter how the actual Bass and Treble Controls are adjusted. 6 Speaker Selector: Press this button to begin the process of configuring the unit to ma

19、tch the type of speakers used in your listening room. (See pages 1719 for more information on speaker setup and configuration.) 7 Surround Mode Group Selector: Press this but- ton to select the top-level group of surround modes. Each press of the button will select the current or last used mode in e

20、ach of the surround mode groups (e.g., Dolby, DTS, DTS Neo:6, Logic 7, DSP, Stereo). When the button is pressed so that the name of the surround mode group appears in the on-screen display and in the Lower Display Line , press the Surround Mode Selector 8 to cycle through the individual modes availa

21、ble. For example, press this but- ton to select Dolby modes, and then press the Surround Mode Selector 8 to choose from the various mode options. 1 Main Power Switch 2 Power Indicator 3 Standby/On Switch 4 Headphone Jack 5 Tone Mode 6 Speaker Selector 7 Surround Mode Group Selector 8 Surround Mode S

22、elector 9 Tuning Selector )/Buttons ! Tuner Band Selector Set Button # Digital Input Selector $ Preset Station Selector % Delay Adjust Selector Input Source Selector the Sleep indicator numbers will disappear and the words SLEEP OFF will appear in the Lower Display Line . When you will be away from

23、home for an extended period of time it is always a good idea to completely turn the unit off with the front-panel Main Power Switch 1. NOTE: All preset memories are lost if the unit is left turned off by using the Main Power Switch 1 for more than four weeks. Source Selection To select a source, pre

24、ss any of the Input Selector Buttons egon the remote. The input source may also be changed by pressing the front-panel Input Source Selector Button . Each press of the button will move the input selection through the list of available inputs. As the input is changed, the AVR 135 will automati- cally

25、 switch to the digital input (if selected), surround mode, output levels and night mode status as well as any speaker configuration settings established by using the INDEPENDENT Bass Manage- ment setting, that were entered during the configu- ration process for that source. The front-panel Video 3 I

26、nputs , Optical 3 Digital Input * or the Coaxial 3 Digital Input ( may be used to connect a device such as a video game or camcorder to your home entertainment system on a temporary basis. As the input source is changed, the new input name will appear momentarily as an on-screen display in the lower

27、 third of the video display.The input name will also appear in the Upper Display Line in the on-screen display and in the front-panel Input Indicators . When an audio source is selected, the last video input used remains routed to the Video 1 Video and S- Video OutputsdjandVideo and S-Video Monitor

28、Outputs g.This permits simultaneous viewing and listening to different sources. 6-Channel/8-Channel Direct Input There are two input choices available for use with sources such as a DVD-Audio or SACD player that are connected to the 6/8-Channel Direct Inputs f. Select the appropriate input according

29、 to the way your system and source equipment are configured: 6 CH DIRECT should be used when the SBR and SBL inputs are NOT in use.The AVR assumes that the input source device has its own internal bass management system.This input passes the input from the source directly through to the volume contr

30、ol without any analog to digital conversion and it mutes the unused input jacks to prevent unwanted noise from interfering with sys- tem performance. 8 CH DIRECT should be used when an input is connected to all eight 8-Channel Direct Inputs f.The AVR assumes that the input source device has its own

31、internal bass manage- ment system.This input passes the input from the source directly through to the volume control without any analog-to-digital conversion and it mutes the unused input jacks to prevent unwanted noise from interfering with system performance. Volume Control Adjust the volume to a

32、comfortable level using the front-panel Volume Control or remote Volume Up/Down Buttons . To temporarily silence all speaker outputs, press the Mute Button.This will interrupt the output to all speakers and the headphone jack, but it will not affect any recording or dubbing that may be in progress.W

33、hen the system is muted, the word MUTE will flash in the Upper Display Line . Press the Mute Buttonagain to return to normal operation. You may adjust the bass and treble tone controls at any point during a listening session by simply turning the Bass Control or Treble Control until the desired sett

34、ing is achieved.You may also totally remove the tone controls from the circuit so that the output is “flat” at any time by pressing the Tone Mode Button 5 and then pressing the /Button ) so that TONE OFF appears in the on-screen display and the Lower Display Line . For private listening, plug the 1/

35、4 stereo phone plug from a pair of stereo headphones into the front-panel Headphone Jack 4.When the headphones plug is connected, the phrase HEADPHONES IN will scroll once across the Lower Display Line and all speakers will be silenced.When the headphone plug is removed, the audio feed to the speake

36、rs will be restored. Surround Mode Selection One of the most important features of the AVR 135 is its ability to reproduce a full multichannel surround sound field from digital sources, analog matrix surround-encoded programs and standard stereo programs. Selection of a surround mode is based on per

37、sonal taste, as well as the type of program source material being used. For example, motion pictures or TV pro- 42 42 38 40 OPERATION 22OPERATION AVR135 harman/kardonAVR135 harman/kardon 14 OPERATION OPERATION 23 grams bearing the logo of one of the major surround- encoding processes, such as Dolby

38、Surround or DTS Stereo, may be played in either the Dolby Digital, Dolby Pro Logic II Cinema, DTS Neo:6 Cinema, or Logic 7 Cinema surround modes depending on the source material. NOTE: Once a program has been encoded with matrix surround information, it retains the surround information as long as th

39、e program is broadcast in stereo.Thus, movies with surround sound may be decoded via any of the analog surround modes such as Dolby Pro Logic II Cinema, Logic 7 Cinema or DTS Neo:6 Cinema, when they are broadcast via conventional TV stations, cable, pay-TV and satellite transmission. In addition, a

40、growing number of made-for-television programs, sports broad- casts, radio dramas and music CDs are also recorded in surround sound. Even when a program is not listed as carrying inten- tional surround information, you may find that the Dolby Pro Logic II, Logic 7 Enhanced or DTS Neo:6,VMAx and the

41、Hall or Theater modes often deliver enveloping surround presentations through the use of the natural information present in all stereo recordings. Surround modes may be changed at any time by using either the front panel or remote control.Any changes made to the surround mode will be retained in the

42、 AVRs menu, even after the AVR is placed in Standby mode.To select a new surround mode from the front panel, first press the Surround Mode Group Selector Button 7 until a mode from the desired major surround mode group such as Dolby, DTS or Logic 7 is selected. Next, press the Surround Mode Selector

43、 Button 8 to choose the specific individual surround mode. To select a surround mode using the remote, press the button for the major surround mode group that includes the mode you wish to choose from: Dolby w, DTS Surround x, DTS Neo:6 , Logic 7 y, Stereo or DSP Surround k. The first press of the b

44、utton will show the current mode from that group.To cycle through the available modes in that group, press the button again until the desired mode appears in the Lower Display Line , the on-screen display and in the Surround Mode Indicators . As the surround modes change, the choice will be displaye

45、d in the on-screen display, in the Lower Display Line and in the Surround Mode Indicators. The Dolby Digital, Dolby Digital EX and DTS 5.1, DTS-ES Matrix and DTS-ES Discrete modes may only be selected when a digital input is in use. In addition, when a digital source is present, the AVR 135 will aut

46、omatically select and switch to the correct mode, regardless of the mode that has been previously selected. For more information on selecting digital sources,see the Digital Audio Playback section below. When the 6-channel/8-channel direct inputs are in use there is no surround processing, as these

47、inputs take the analog output signals from an optional, exter- nal DVD-Audio or SACD player, or another source device and carry them straight through to the volume control without any further digital processing. To listen to a program in traditional two-channel stereo, using the front left and front

48、 right speakers only (plus the subwoofer, if installed and configured), press the Stereo Buttonuntil SURR OFF appears in the Lower Display Line , or press the Surround Mode Group Selector 7 until the Stereomodes appear in the on-screen display and Lower Display Line . Next, press the Surround Mode S

49、elect Button 8 until SURROUND OFF appears in the on-screen display and Lower Display Line . Digital Audio Playback Digital audio is a major advancement over older analog surround processing systems such as Dolby Pro Logic. It delivers five discrete channels:left front,center,right front,left surround and right surround.Each channel reproduces full frequency range (20Hz to 20kHz) and offers dramatically improved dynamic range and signifi- can