HarmanKardon-HK990_230-int-sm维修电路原理图.pdf

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1、 harman/kardon Service Manual HK 990/230 2 x 200W INTEGRATED STEREO AMPLIFIER Released EU2009 harman/kardon, Inc. Rev 0, 03/2009 250 Crossways Park Dr. Woodbury, New York, 11797 RadioFans.CN 收音机爱 好者资料库? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?RadioFans.CN 收音机爱 好者资料库250 Crossways Park Drive, Woodbury, New

2、 York 11797 Harman Consumer Group International:2, Route de Tours, 72500 Chteau-du-Loir, France 2008 Harman Kardon, Incorporated Part no. 8509 9012 0000SpecificationsNOMINALContinuous Average Power Per Channel (FTC)8 Ohms:150 Watts0.03%THD20 Hz 20 kHz, both channels driven4 Ohms:300 Watts200Signal-t

3、o-noise Ratio (Reference rated power output, A-WTD)Tuner/CD100 dBPhono (MC):75 dBInput sensitivity/ImpedanceTuner/CD350 mV/43k OhmsPhono (MM):10 mV/47k OhmsPhono (MC):1 mV/100 OhmsOverloadTuner/CD2.8VPhono (MM):85 mVPhono (MC):8.5 mVTone control range, Bass 100 Hz/Treble 10 kHz10 dB/10 dBPower suppl

4、yAC 230V, 50 HzPower consumption1000 WStandby power consumption1WDimensions (Width x Height x Depth) 440 x 160 x 444 mmDepth includes Volume Button and Loudspeaker TerminalsWeight24 kg1?CONTROLS AND FUNCTIONSControls and Functions? Power Indicator: This LED will illuminate in amber when the unit is

5、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 white.? System Power Control: Press this button to turn on the HK 990; press it again to turn the unit off (to Standby). Entering Standby also saves all Setup parameters.? Spe

6、aker 1/2 Selectors: Press to select speaker pair 1 or 2, or both, or neither (head-phone output only).? Record Out Selector: First press shows the record source presently selected in the display. Pressing on the the Source selectors ? within a few seconds after pressing ? changes the record source.

7、Exit this function by pressing ?again, or wait for a few seconds until exit takes place automatically.? Input Source Selector: Select input source for listening by pressing one of the ”Source” but-tons repeatedly to scroll through all the Inputs either forwards or backwards, until the display shows

8、the desired source.? Input Setup Button: Press this Button to enter/exit the Input Setup Mode. Here you can select the physical connection for each source (Analog/Digital etc.) as well as Gain, Bass/Treble etc. Refer to the Setup section of this manual.? Speaker Setup Selector: Press this But-ton to

9、 enter the Speaker Setup Menu, where you can switch subwoofers on and off, select crossover frequency, run automatic speaker setup (EzSet/ EQ) etc. Refer to the Setup section of this manual.? Up/Down Arrow Buttons: Press to scroll through various options for adjustment in a menu.? Left/Right Arrow B

10、uttons: Press to increase/decrease a parameter or to select between parameters after selecting a menu for adjustment with the Up/Down Arrow Buttons.? Level Settings Button: Press to enter/exit the Balance left/right adjustment for the speakers as well as subwoofer level.? Headphone Jack/Setup Microp

11、hone Input: Plug in headphones if desired. With both ”Speaker 1” and ”2” selectors in the Offposition, output is supplied only to headphones. When using the automatic loudspeaker setup and calibration system (EzSet/ EQ), plug the microphone in here.? Volume Control: Turn to raise or lower output vol

12、ume.? 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.? Enter Button: Press to select a parameter for adjustment and to confirm.? Main Informa

13、tion Display: This displaydelivers messages and status indications to help you operate the amplifier.2? ?ConnectionsCONNECTIONS? Right Loudspeaker output, System 2.? Right Loudspeaker output, System 1.? RS-232 connector for possible future PC update. Update Switch.? Input jacks for one or two subwoo

14、fer signals from external surround processor.? Output jacks for two subwoofers.? Digital coaxial output jack for digital record-ing. Also permits digital recording of analog sources.? Preamplifier output jacks. ? Analog output jacks for tape recording.? Analog output jacks for CD Recorder analog rec

15、ording.? AUX input jacks, suitable for analog signals from video games, video recorders etc.?TV input jacks for analog sound input from your TV.?TAPE input jacks for analog tape replay.? CDR input jacks, for CD Recorder analog replay.? Balanced analog inputs (XLR), for use with all signal sources th

16、at output balanced signals. Available via the CD Input function only, as an alternative to the unbalanced RCA jacks (Input ?). Pin configuration for the XLRInputs: Pin 1 is Ground, Pin 2 is Plus/Hot, Pin 3 is Minus/Cold.? Left Loudspeaker output, System 2.? Left Loudspeaker output, System 1.? Power

17、lead AC input.?TUNER analog Input jacks.? PROCESSORAnalog Inputs. These Inputs go directly to the power amplifier section of the HK 990, bypassing the Volume and Tone Control. Here you can connect the Front Channel Pre Out L+R signals from an external surround processor, to benefit from the superior

18、 power of the HK 990 and control volume from the processor. NOTE: Only use the Processor Input with a device that has its own volume control! ? CD analog Input jacks. You can select either this Input or the Balanced Input as analog Input in the CD Input Setup Mode.? Phono Input for record player wit

19、h Moving Magnet (high output and high impedance) or High-Output Moving Coil cartridge.? Phono Input for record player with Moving Coil (low output and low impedance) car-tridge.? If your record player has a separate Ground wire, attach it here to avoid hum noise.? Connect the trigger Input (if avail

20、able) on one or two subwoofers to these trigger ON/OFF output jacks. When you switch ON the HK 990, it sends a trigger signal, which switches ON the subwoofer. When switching OFF the HK 990, the subwoofer also switches OFF.? HRS (High-Resolution Synchronization) Input. Use the included HRS-cable to

21、connect the HD 990 CD player (or other similarly equipped player) for optimum sound quality.? Optical Digital Inputs (TOS-Link). Connect any digital device with Optical Digital Outputto one of these Inputs. Push the Optical Jack through the hinged door that covers the Input until it clicks into plac

22、e.? Coaxial Digital Inputs. Connect any digital device with Coaxial Digital Output to one of these Inputs. Usually, Coaxial Digital transmis-sion is preferred to Optical, given a choice.? Remote IN. To control your HK 990 with an external infrared remote sensor, connect the wire from the remote sens

23、or here.? Remote OUT. Connect other Harman Kardon devices (you may also experiment with other brands) that you wish to control with the HK 990 Remote Control to this Output.3REMOTE CONTROLRemote ControlBand: Switches between frequency bands on a Tuner.FM Mode: Switches between Stereo and Mono on a T

24、uner.Auto: Switches between Automatic and Manual tuning on a Tuner.Mem: For memorizing a radio station in the Pre-set Memory of a Tuner.Clear: Clears the memory of a CD/CDR or clears a preset from Tuner station list.Check: Press this button to check the order of tracks programmed into a CD players m

25、emory.Prog: Press this button to begin the process of programming a CD player to play the tracks of a disc in a specific order.Speaker Setup: Press to enter the HK 990Speaker Setup functions. See below for explana-tion of the Speaker Setup process.Input Setup: Press to enter the HK 990 Input Setup f

26、unctions. See below for explanation of the Input Setup process.Arrow Buttons (? ?): This round but-ton is used to navigate within the menus of the HK 990.EQ Preset: Press to enter the HK 990 EqualizerPreset functions. See below for explanation of the EQ Presets.Level Settings: Press to enter the HK

27、990 LevelSetting functions. See below for explanation of the Level Setting process.Enter: Press to confirm a selection within a HK 990 setup procedure or to switch between selections. See under each Setup process for fur-ther explanations.Scroll ? ? ? : When listening to a Tuner, press + to tune to

28、higher frequency stations and to tune to lower frequency stations. Also see the OwnersManual for your harman/kardon tuner.Volume ? ? ? : Press to adjust the HK 990 vol-ume up or down.Select: When listening to a tuner, press this but-ton to alternate between Auto Tune, Manual Tune or Preset Tune.Paus

29、e: When playing a CD, press this button to momentarily pause the disc. Press again to resume play.Mute: Press this button to momentarily silence the HK 990. “Muted” flashes in the front panel display. Press again to re-activate sound output.? ? and ? ? (Search Buttons): Press one of these buttons to

30、 search fast forward or back-ward on a CD or Tape. You can hear intermittent sounds from the CD while searching. Normalplayback resumes when you release the button.? ? ? and ? ? ? (Skip Buttons): Press one of these buttons to move to the next track or to the previous track on a CD or Tape. Repeatedl

31、y pressing one of the buttons skips more tracks. On a CD, pressing Skip Forward while playing the last track skips to track 1, and pressing Skip Backwhile playing track 1 skips to the last track.Stop: Press this button to stop play of a CD or Tape.Play: Press this button to start playback of a CD or

32、 Tape. If the CD drawer is open, the drawer closes and play begins. Pressing the Play Buttonagain pauses play momentarily, same as the Pause Button.? 10 and ? 10: When playing a CD, press the +10 Button to skip 10 tracks forward and the -10 Button to skip 10 tracks backward from the track you are pl

33、aying. More presses again skips 10 more tracks. If there are less than 10 tracks to the end or start of the CD, the last or first track is played.Folder ? and Folder ? ? : When playing a CD with MP3 files, these buttons move to the next or the previous folder with MP3 material.Repeat: When playing a

34、 CD, pressing this but-ton once repeats the current track, shown as “Rep 1” in the CD players display. Pressing once more repeats the entire CD, shown as “Rep All” in the CD players display. Third press exits repeat play.Repeat A-B: When playing a CD, press once to establish a starting point (shown

35、as “Rep A” in the CD players display) and a second time to establish an end point (shown as Rep A-B in the CD players display). The music between these two points is repeated as a loop until you press the button a third time, returning to normal play. Open/Close: Opens the CD drawer when it is close

36、d and closes it when it is open. The drawer may also be closed by pressing Play.Random: When playing a CD, press this button to play all tracks in random order.4AMP AdjustmentIding AdjustmentPrecaution for handling measuring instrumentThe ground side of the measuring instrument to be connected to th

37、e speaker terminal of this unit must be kept in floating condition because this unit is equiped with the floating balanced power amplifier.Condition * Start adjustment 5 minutes or more after the power is turned on. * Non loaded condition.Idling AdjustmentAdjust R53 so that the DC voltage of TP1 bec

38、omes +38mV .R53TP15? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?6REV. 0aInformation furnished by Analog Devices is believed to be accurate andreliable. However, no responsibility is assumed by Analog Devices for it

39、suse, nor for any infringements of patents or other rights of third parties thatmay result from its use. No license is granted by implication or otherwiseunder any patent or patent rights of Analog Devices.One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.Tel: 781/329-Fax: 781/326-870

40、3 Analog Devices, Inc., 2002AD1955ARSHigh Performance Multibit?-?DACwith SACD PlaybackFEATURES5 V Power Supply Stereo Audio DAC SystemAccepts 16-/18-/20-/24-Bit DataSupports 24-Bit, 192 kHz Sample Rate PCM Audio DataSupports SACD Bit Stream and External Digital FilterInterfaceAccepts a Wide Range of

41、 PCM Sample Rates Including:32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, and192 kHzMultibit Sigma-Delta Modulator with Perfect Differen-tial Linearity Restoration for Reduced Idle Tones andNoise FloorData Directed Scrambling DACLow Sensitivity to JitterSupports SACD Playback with Bit Expansion Filter

42、Differential Current Output for Optimum Performance8.64 mA p-p Differential Output120 dB SNR/DNR (not muted) at 48 kHz Sample Rate(A-Weighted Stereo)123 dB SNR/DNR (Mono)110 dB THD + N110 dB Stop-Band Attenuation with ?0.0002 dB Pass-Band Ripple8? Oversampling Digital FilterOn-Chip Clickless Volume

43、ControlSupports SACD-Mute Pattern DetectionSupports 64 fS/128 fS DSD SACD with Phase ModeInternal Digital Filter Pass-Through for External FilterMaster Clock: 256 fS, 512 fS, 768 fSHardware and Software Controllable Clickless MuteSerial (SPI) Control for Serial Mode, Number of Bits,Sample Rate, Volu

44、me, Mute, De-Emphasis, Mono ModeDigital De-Emphasis for 32 kHz, 44.1 kHz, and 48 kHzSample RatesFlexible Serial Data Port with Right-Justified, Left-Justified, I2S, and DSP Modes28-Lead SSOP Plastic PackageAPPLICATIONSHigh End DVD AudioSACDCDHome Theater SystemsAutomotive Audio SystemsSampling Music

45、al KeyboardsDigital Mixing ConsolesDigital Audio Effects ProcessorsFUNCTIONAL BLOCK DIAGRAMAUTO-CLOCKDIVIDERSPI CONTROLMASTERCLOCK INPUTCONTROLDATA INPUT3DIGITALSUPPLYDSDBITSTREAMINPUTMUXSERIAL DATAINTERFACEEXTERNALFILTER I/FDIGITALFILTER ENGINES/HMULTIBIT ?-?MODULATORNOISE-SHAPEDSCRAMBLING16-/20-/2

46、4-BITAUDIO DATA/EXTERNALDIGITALFILTER INPUT3/4DSD FILTERRESETMUTEANALOGSUPPLYZEROFLAGSI-DACL-CHR-CHDIFFERENTIALCURRENT OUTPUTI-DACVOLTAGEREFERENCE4PRODUCT OVERVIEWThe AD1955 is a complete, high performance, single-chip, stereodigital audio playback system. It is comprised of a multibit sigma-delta m

47、odulator, high performance digital interpolation filters,and continuous-time differential current output DACs. Otherfeatures include an on-chip clickless stereo attenuator and mutecapability, programmed through an SPI compatible serial controlport. The AD1955 is fully compatible with all known DVD a

48、udioformats including 192 kHz as well as 96 kHz sample frequenciesand 24 bits. It is also backward compatible by supporting 50 s/15 s digital de-emphasis intended for “redbook” compact discs,as well as de-emphasis at 32 kHz and 48 kHz sample rates.The AD1955 has a very flexible serial data input por

49、t thatallows for glueless interconnection to a variety of ADCs, DSPs,SACD decoders, external digital filters, AES/EBU receivers, and(continued on page 12)7REV. 0AD1955ARSCAUTIONESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readilyaccumulate on the human body

50、 and test equipment and can discharge without detection. Although theAD1955 features proprietary ESD protection circuitry, permanent damage may occur on devicessubjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommendedto avoid performance degradation or loss