HarmanKardon-AVR55-avr-sm维修电路原理图.pdf

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1、harman/kardon AVR55 AUDIO/VIDEO AC-3 PRO-LOGIC RECEIVER SERVICE MANUAL harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 RadioFans.CN 收音机爱 好者资料库 CONTENTS SPECIFICATIONS.2 FRONT/REAR PANEL CONTROLS & CONNECTIONS .3 SET-UP/OPERATION GUIDE.12 TROUBLESHOOTING .26 BLOCK DIAGRAM (UNTILED

2、 & TILED)27 EXPLODED VIEW .32 MECHANICAL PARTS LIST .34 ELECTRICAL PARTS LIST.35 SCHEMATICS AMPLIFIER (UNTILED & TILED).44 SCHEMATICS FRONT PCB (UNTILED & TILED).49 SCHEMATICS INPUT PCB (UNTILED & TILED).54 SCHEMATICS MAIN PCB (UNTILED & TILED).59 SCHEMATICS PRE-IN PCB (UNTILED & TILED).64 SCHEMATIC

3、S AC-3 PCB (UNTILED & TILED).69 SCHEMATICS TUNER PCB (UNTILED & TILED).74 WIRING DIAGRAM (UNTILED & TILED).79 RadioFans.CN 收音机爱 好者资料库 Technical Specifications AVR55 120 volt Audio Section Stereo Mode Continuous Average Power (FTC) 65 Watts per channel 20Hz20kHz: 0.07% THD, both channels driven into

4、8 Ohms Five-Channel Surround Mode Power Per Individual Channel Front L&R channels: 55 Watts per channel, 0.07% THD, 20Hz20kHz into 8 ohms Center channel: 55 Watts, 20Hz20kHz into 8 ohms Surround channels: 55 Watts per channel, 40Hz20kHz into 8 ohms Input Sensitivity/Impedance Linear (High Level)200m

5、V/32 Kohms Phono3mV/47Kohms Signal-to-Noise Ratio (IHF-A) Linear (CD)95dB Phono73dB Surround System Adjacent Channel Separation Analog Decoding (Pro Logic, etc.)40dB Dolby Digital (AC-3)55dB Frequency Response 1W (+0, 3dB)8Hz100kHz High Instantaneous Current Capability (HCC)35 Amps Transient Intermo

6、dulation Distortion (TIM)Unmeasurable Rise Time16sec Slew Rate40 V/sec FM Tuner Section Frequency Range87.5108 MHz Usable SensitivityIHF 1.3 V/14.2dBf Signal-to-Noise RatioMono/Stereo 70/68dB DistortionMono/Stereo 0.3/0.5% Stereo Separation1kHz, 40dB Selectivity400kHz 65dB Image Rejection98MHz 65dB

7、Tuner Output Level1kHz, 75kHz Dev 500mV AM Tuner Section Frequency Range5201710kHz Signal-to-Noise Ratio45dB Usable SensitivityLoop 500V Distortion1kHz, 50% Mod 0.8% Selectivity9kHz, 25dB General Power RequirementAC 120V 60Hz Power Consumption60W idle, 325W maximum (2 channels driven) Dimension (Max

8、) Width17.4 inches (440 mm) Height6.3 inches (160 mm) Depth16.0 inches (406 mm) Weight32.6 lbs. (14.8 kg) Depth measurement includes knobs, buttons and terminal connections. All features and specifications are subject to change without notice. *Trademarks of Dolby Laboratories. DTS is a trademark of

9、 Digital Theater Systems. UltraStereo is a trademark of UltraStereo Corp. RadioFans.CN 收音机爱 好者资料库 2 Front Panel Controls AVR55 120 volt 1 Main Power Switch 2 System Power Control 3 Power Indicator 4 Memo Button 5 Headphone Jack 6 FM Mode 7 Speaker Switch 8 AM/FM 9 Tuning Button ) CD ! Tape 1/Monitor

10、 Tape 2 # Phono $ TV % DVD Input Vid 1 & Vid 1 Rec * Vid 2 ( Vid 2 Front/Rear Speaker Mode Selector Surround Off Bass Control Surround Mode Treble Control Digital Mode Selector Balance Control Digital Input Selector Night Mode Video 2 Inputs Contour Volume Control Subwoofer Level Adjust 3 3Center Le

11、vel Adjust 3 4Surround Level Adjust 3 5Information Display 3 6Remote Sensor Window 3 7Numeric Keys 67890 AVR 55 SpeakerHeadphones TUNEVID 1 REC. 12345 SPK. MODESURR.OFFFRT/REARVID 2SURR. MODENIGHT Volume Contour BassTrebleBalance MEMODVDVID 1DIGITAL INPUTDIGITAL Subwoofer Level Surround Level Center

12、 Level FM MODEAM/FMCDT MONPHONOTV VIDEO 2 RVideoLMaxMinMaxMinL Audio R Power RFCOAX OPT T 2 DIGITAL HALLTHEATERSTADIUMCHURCHSLEEP SOURCE VID 2 DVD TV PRO LOGIC VID 1 RECCONTOURSTEREOTUNEDAUTOMEMORYPRESETT MON 3 STEREO- 4)$*6 82 5 79#%&(!13 RadioFans.CN 收音机爱 好者资料库 3 Front Panel Controls AVR55 120 vol

13、t 1 Main Power Switch: Press this button to apply power to the AVR55. When the switch is pressed the unit is placed in a Standby mode, as indicated by the amber LED 3 sur- rounding the System Power control 2. This button MUST be pressed in to operate the unit regardless of the status of the Power Sw

14、itch at the bottom of the front panel. To turn the unit off and prevent the use of the remote control, this switch should be pressed until it pops out to extend from the front panel so that the word “OFF” may be read at the top of the switch. NOTE: In normal operation this switch may be left in the

15、“on” position. 2 System Power Control: When the Main Power Switch 1 is pressed in, press this button to turn on the AVR55, press it again to turn the unit off. Note that the Power Indicator surrounding the switch 3 will turn green when the unit is on. 3 Power Indicator: This LED will illuminate in a

16、mber 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 Memo Button: This button is used to enter settings for speaker modes, tuner presets and delay time after making the appropriate selection. 5 Hea

17、dphone Jack: This jack may be used to listen to the AVR55s out- put through a pair of headphones. Be certain that the headphones have a standard 14 stereo phone plug. 6 FM Mode: Press this button to select the stereo or mono mode for FM tuning. In the STEREO mode a STEREOindicator will illuminate in

18、 the information display, and stereo reception will be provided when sta- tions 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 for better reception of weak signals. 7 Speaker

19、Switch: This switch controls the front left/right speakers. For normal operation it is pressed in and sound is heard through the front speakers. To silence the front left/right speakers, push the button once until it is in the “out” position. When the front speakers are turned off sound will continu

20、e to be heard through the center and rear speakers and the headphone jack. 8 AM/FM: Press this button to select the tuner as the AVR55s input source. When it is first pressed the last station tuned will appear. Press it again to change between AM and FM bands. 9 Tuning Button: Press the left side of

21、 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 frequency is tuned, the TUNED indicator will illuminate in the Information Display 3 5. A brief (1/2 second) press of the button will manually tune to the nex

22、t frequency increment, while pressing and hold- ing the button for a longer period will automatically tune to the next station with a signal strong enough for acceptable reception. ) CD: Press this button to select the device connected to the CD Input jacks d as the listening source. ! Tape1/Monitor

23、: Press this button to select the device connected to the Tape 1 Play jacks as the lis- tening source. The T-Mon indicator K will illuminate to indicate that the Tape Monitor has been selected, while the input being monitored will remain in the Main Information Display F. Tape2: Press this button to

24、 select the device connected to the Tape 2 Play jacks as the listening source. # Phono: Press this button to select the Phono Input e as the listening source. $ TV: Press this button to select the device connected to the TV/Aux jacks as the listening and viewing source. % DVD Input: Press this butto

25、n to select the device connected to the DVD Play jacks as the listening and viewing source. Vid 1: Press this button to select the device connected to the Video 1 In jacks as the listening and viewing source. & Vid 1 Rec: Press this button to select the device that will be recorded by the device con

26、nected to the Video 1 Out jacks . The selected source is shown in the Vid 1 Source indicators A in the Information Display3 5. Note that this recording will take place even if another source is being listened to. * Vid 2: Press this button to select the device connected to the Video 2 Play jacks as

27、the listening and viewing source. RadioFans.CN 收音机爱 好者资料库 4 Front Panel Controls ( Vid 2 Front/Rear: Press this button to choose either the rear panel Video 2 Play jacks or the front panel Video 2 Inputs as the input source. When the green light above the button is illuminated, the front panel jacks

28、 are selected. Speaker Mode Selector: Press this button to configure the AVR55 for the type of speakers used in your system. See page 18 for details on using this button. Surround Off: Press this button to turn the surround modes off to listen to a source in traditional two- channel stereo from the

29、front left/right speakers only. Bass Control: Turn this control to modify the low 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. Surround Mode: Press this button to select one of the analog surround processin

30、g modes (Dolby Pro Logic, Dolby 3 Stereo, Theater, Hall, Stadium and Church) for a listening session. 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. Digita

31、l Mode Selector: Press this button to listen to a source when a PCM or Dolby Digital (AC-3*) signal is present. NOTE: Dolby Digital may only be used with the CD, TV, DVD, Vid 1 and Vid 2 inputs. Balance Control: Turn this control to change the relative volume for the front left/right channels. NOTE:

32、 For proper operation of the surround modes this control should be at the midpoint, or “12 Oclock” position. Digital Input Selector: When the Digital Mode Selector has been pressed, this button is used to select the type of digital input to be used. NOTE: The coax or optical inputs may be selected w

33、ith the CD, TV, DVD, Vid 1 and Vid 2 inputs. The RF input may be used with the Vid 1 input only. Night Mode: Press this button to activate the “Night” mode, pre- venting a loud playback when the digital modes are in use. Video 2 Inputs: These jack may be used to temporarily connect an audio/video so

34、urce such as a video game or camcorder to the AVR55. To select these jacks as the input, press the Vid 2 Front/Rear button ( until the green LED above that button is illuminated. Contour: Press this button when listening at low levels to activate special circuits that compensate for the response of

35、the human ear at lower volumes. In the off position the unit will provide flat frequency response. Volume Control: Turn the knob clockwise to increase volume, counterclockwise to decrease the volume. Note that approximately two revolutions of the knob are required to go from no output to maximum vol

36、ume. Subwoofer Level Adjust: Press these buttons to raise or lower the output to the subwoofer channel. These buttons should be used dur- ing normal listening sessions for touch-up adjustments, not when the test signal is being used for major system alignment. 3 3Center Level Adjust: Press these but

37、tons to raise or lower the output to the center channel. These buttons should be using during normal listening sessions for touch- up adjustments, not when the test signal is being used for major system alignment. 3 4Surround Level Adjust: Press these buttons to raise or lower the output to the surr

38、ound channels. These buttons should be used dur- ing normal listening sessions for touch-up adjustments, not when the test signal is being used for major system alignment. 3 5Information Display: This display delivers messages and status indications to help you operate the receiver. Refer to the sep

39、arate diagram for complete explanation of the FL display. 3 6Remote Sensor Window: The sensor behind this window receives infrared signals from the remote con- trol. Aim the remote at this area and do not block or cover it unless an external remote sensor is installed. 3 7Numeric Keys: Press these b

40、uttons to enter or recall stations entered to the tuners preset memory. See page 25 for complete information on using the tuner and the preset memories. AVR55 120 volt RadioFans.CN 收音机爱 好者资料库 5 Front Panel Information Display AVR55 120 volt DIGITAL HALLTHEATERSTADIUMCHURCHSLEEP SOURCE VID 2 DVD TV P

41、RO LOGIC VID 1 RECCONTOURSTEREOTUNEDAUTOMEMORYPRESETT MON 3 STEREO - F MLKJIGH BA ? DEC A Vid 1 Record Indicators B Dolby Digital Indicator C Analog Dolby Surround Mode Indicators D Analog Surround Mode Indicators E Sleep Indicator F Main Information Display G Preset Indicator H Memory Indicator I A

42、uto Mode In Indicator J Tuned Indicator K T-Mon Indicator L Stereo Indicator M Contour Indicator A Vid 1 Record Indicators: A dot appears next to one of the sources shown in this indicator to tell you which input has been selected as the output to the device connected to the Video 1 Out jacks . Pres

43、s the Vid 1 Rec button & to change the source. B Dolby Digital Indicator: This indicator illuminates when a Dolby Digital source is being played. C Analog Dolby Surround Mode Indicators: These indicators illumi- nate when one of the analog (matrix) dolby Surround modes is in use. D Analog Surround M

44、ode Indicators: These indicators illumi- nate when one of the DSP generated analog surround modes is in use. E Sleep Indicator: This indicator is illuminated when the Sleep function is in use. The number that appears above the indicator is the number of minutes remaining before the AVR55 will return

45、 to the Standby mode. F Main Information Display: This display shows messages relating to the status, input source, surround mode, tuner, volume level or other aspects of units operation. G Preset Indicator: This indicator illuminates when one of the stations entered into the preset memory is tuned.

46、 The number that appears below the indicator is the preset stations memory. H Memory Indicator: This flashes after the Memo button 4 u has been pressed to indicate that you should quickly select and enter a preset memory location for a specific radio station. I Auto Mode In Indicator: This indicator

47、 illuminates when the “Auto” mode is in use for FM tuning. J Tuned Indicator: This indicator illuminates when a station is being received with sufficient signal strength to allow for acceptable listening quality. K T-Mon Indicator: This indicator illuminates when the Tape Monitor function is in use

48、to remind you that you are listening to the record output of the device connected to the Tape 1 Record jacks , not to the actual input source shown in the Information Display. L Stereo Indicator: This indicator illuminates when an FM station is being tuned in stereo. M Contour Indicator: This indica

49、tor illuminates when the Contour circuits have been engaged by pressing the Contour button . RadioFans.CN 收音机爱 好者资料库 6 Rear Panel Connections AVR55 120 volt CENTER PRE-OUT REAR PRE OUT FRONT ANTENNAMAIN IN PRE OUT AM LOOP FM 75 SUB WOOFER OUT AC-3 RF/PCM GND COAXIAL/PCM OPTICAL/PCM MODEL NO.: AVR55 HARMAN KARDON NORTHRIDGE CALIFORNIA, U.S.A. R REAR SPEAKER (8) FRONT SPEAKER (8) CENTER SPEAKER (8) R L L SWITCHED 120V/60Hz TOTAL 100W 1A MAX AC