HarmanKardon-AVR347-avr-sm维修电路原理图.pdf

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1、 harman/kardon AVR347 AVR347 7 X 55W 7.1 CHANNEL A/V RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 PACKAGING.5 FRONT PANEL CONTROLS.6 REAR PANEL CONNECTIONS.8 REMOTE CONTROL FUNCTIONS.11 CONNECTIONS.14 OPERATION.33 TROUBLESHOOTING GUIDE.41 PROCESSOR RESET.42

2、 DISASSEMBLY43 UNIT EXPLODED VIEW.48 EXPLODED VIEW PARTS LIST49 AMP BIAS ADJUSTMENT.50 BLOCK DIAGRAM.51 ELECTRICAL PARTS LIST.52 PCB DRAWINGS98 SEMICONDUCTOR PINOUTS.107 SCHEMATICS209 WIRING DIAGRAM.219 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev 0 6/2007 www.freeservicem

3、anuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 收音机爱 好者资料库 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 part

4、s 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 t

5、o 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 componen

6、ts. 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.

7、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 su

8、ch 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 c

9、harges 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 devic

10、es 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

11、 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 o

12、f your foot from a carpeted floor can generate static electricity sufficient to damage an ES devices. CAUTION : AVR347 harman/kardonharman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 收音机爱 好者资料库 2 SAFETY PRECAUTIONS The following check should be performed for t

13、he continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester between the earth ground and all exposed metal parts of the appliance (input/output terminals, scre

14、wheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn the AC 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 M

15、UST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. Device under test Test all exposed metal surfaces Also test with plug reversed (Using AC adapter plug as required) AC Leakage Test Leakage current tester Reading should not be above 0.5mA Earth ground AVR347 harman/kardonharman/kardon

16、www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 收音机爱 好者资料库 Audio Section Stereo Mode Continuous Average Power (FTC) 70 Watts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohms Seven-Channel Surround Modes Power per Individual Channel Front L that is, the

17、 low-frequency-range capability of each speaker. Channel Level Adjust:Press this button to set the output level for each channel so that all speakers sound equally loud at the listening position. Digital Input Select:Press this button to select the specific digital audio input (or analog audio input

18、) you used for the current source. Delay:Press this button to set delay times that compensate for placing the speakers at different distances from the listening position. FRONT-PANEL CONTROLS AVR347 harman/kardonharman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.

19、CN 收音机爱 好者资料库 Surround Mode TuningPreset Stations Surround Select Tuner BandTuning Mode Source Select Headphone Jack/EzSet/EQ Microphone Input Digital Audio Inputs (Optional 4 and Coaxial 4) Video 4 Video Inputs Video 4 Analog Audio Inputs Navigation Tone ModeSpeaker Size Setup Delay Digital Input S

20、elect Power Indicator Main Power Switch Standby/On Switch Volume Source Indicators Message Display Surround Mode Indicators Speaker/Channel Input Indicators Channel Level Adjust NOTE: To make it easier to follow the instructions throughout the manual that refer to this illustration, a copy of this p

21、age may be downloaded from the Product Support section at . AVR347 harman/kardonharman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 收音机爱 好者资料库 REAR-PANEL CONNECTIONS AM and FM Antenna Terminals:Connect the included AM and FM antennas to their respective termina

22、ls for radio reception. XM Antenna Jack:Plug in an XM antenna module here.The XM antenna module is purchased separately, and should specify that it is for home use with an XM Readyproduct.You will need to subscribe to the XM service, which is available separately, and activate the service for your a

23、ntenna module. (XM service is not available in Alaska and Hawaii.) Front, Center and Surround Speaker Outputs:Use two- conductor speaker wire to connect each set of terminals to the correct speaker. Remember to observe the correct polarity (positive and negative connections).Always connect the posit

24、ive lead to the colored terminal on the receiver and the red terminal on the speaker. Connect the negative lead to the black terminal on both the receiver and the speaker. See the Connections section for more information on connect- ing your speakers. Surround Back/Multiroom Speaker Outputs:These sp

25、eaker outputs may be used either for the surround back channels in a 7.l- channel home theater, or they may be reassigned to a remote room for use with a multiroom system.When these outputs are reassigned for multiroom operation, only a 5.1-channel configuration will be available in the main listeni

26、ng room. Use the on-screen menu system to configure these channels as desired. As with the other speaker outputs, remember to observe proper polarity by connecting the positive and negative output terminals to the corre- sponding terminals on each speaker. Subwoofer Output:If you have a powered subw

27、oofer with a line- level input, connect it to this jack. Preamp Outputs:Connect these jacks to an external amplifier if more power is desired. Surround Back/Multiroom Preamp Outputs:These outputs may be used with an external amplifier either to power the surround back channels, or to power the speak

28、ers in the remote zone of a multi- channel system. Use the on-screen menu system to configure these channels as desired. Remote Infrared (IR) Input and Output:When the remote IR receiver on the front panel is blocked, such as when the AVR is placed inside a cabinet, connect an optional IR receiver t

29、o the Remote IR Input jack for use with the remote control.The Remote IR Output may be connected to the Remote IR Input of a compatible source device (or other product) to enable remote control through the AVR.This is particu- larly useful in multiroom applications, when you wish to control the sour

30、ce device from the remote room (when used with the Multiroom IR Input).When several source devices are used, connect them in “daisy chain” fashion. Multiroom Infrared (IR) Input:Connect a remote IR receiver located in the remote zone of a multiroom system to this jack to control the AVR and any sour

31、ce devices connected to the Remote IR Output from the remote zone. Remote IR Carrier Output:This output is similar in function to the Remote IR Output, with the difference that this jack outputs the full infrared signal as received by the AVRs IR sensor or the Remote IR Input, while the Remote IR Ou

32、tput jack outputs a “stripped” signal that has no carrier frequency.The full signal may be required by some components with IR inputs. It may also be required when you connect external IR emitters or other devices to the AVR to pass IR signals to other components. Multiroom Audio Outputs:Connect the

33、se jacks to an external amplifier to power the speakers in the remote zone of a multiroom system.When these jacks are used, it is possible to have a full 7.1- channel system in the main listening room at the same time the multiroom system is in use. A-BUS Port:Use a Category 5/5e cable to connect th

34、is port to optional A-BUS equipment for multiroom operation.When the A-BUS system is used, it is possible to have a full 7.1-channel system in the main listening room at the same time the multiroom system is in use. Video 1,Video 2,Video 3 and DVD Audio/Video Inputs: These jacks may be used to conne

35、ct your video-capable source components (e.g.,VCR, DVD player, cable TV box) to the receiver. Remember to use only one type of video connection for each source. See the Connections section for more information on audio and video connection options for each source component. Video 1 Audio/Video Outpu

36、ts:These jacks may be used to connect your VCR or another recorder. Composite and S-Video Monitor Outputs:If any of your sources use composite or S-video connections, you may need to connect one or both of these monitor outputs to the corresponding inputs on your television or video display in order

37、 to view the sources and to view the on-screen displays. If your video display is equipped with component video or HDMI inputs, you may take advantage of the AVR 347s transcoding capability, which transcodes composite and S-video signals to component video and HDMI, allowing for only a single video

38、connection from the AVR to the video display. HDMI Inputs and Output:HDMI (High-Definition Multimedia Interface) is a newer type of connection for transmitting digital audio and video signals between devices.With the AVR 347s powerful processor, you may connect up to two HDMI-equipped source devices

39、 to the HDMI inputs using a single-cable connection, while benefiting from superior digital audio and video performance. However, if your video display is not HDMI-compatible, you will need to connect the device to one of the other source inputs, selecting a coaxial or optical digital audio input an

40、d analog video input. See the Connections and Installation sections for more information. If your video display has an HDMI input, but some of your sources have only analog video outputs, you may still rely on just the HDMI video connection to your display; the AVR 347 will automatically transcode a

41、nalog video signals up to 720p to the HDMI format. High-resolution analog 1080i or higher signals are not available at the HDMI Output. AVR347 harman/kardonharman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 收音机爱 好者资料库 REAR-PANEL CONNECTIONS The AVR 347 is Simp

42、lay HD-verified for compatibility via the HDMI connection with other Simplay HD-verified products. CD and Tape Audio Inputs:These jacks may be used to connect audio-only source components (e.g., CD player, tape deck). Do not connect a turntable to these jacks without a phono preamp. Tape Outputs:The

43、se jacks may be used to connect a CDR or another audio-only recorder. Coaxial and Optical Digital Audio Inputs:If a source has a compatible digital audio output, connect it to one of these jacks for improved audio performance. Use only one type of digital audio connection for each source. Coaxial an

44、d Optical Digital Audio Outputs:If a source is also an audio recorder, you may connect a compatible digital audio output to the recorders input for improved recording quality. The Bridge/DMP Input:Connect the optional Harman Kardon to this input for use with your iPod (not included). Make sure the r

45、eceiver is turned off (in Standby mode) when connecting The Bridge. 6-/8-Channel Inputs:Connect the multichannel analog audio outputs of a DVD-Audio, SACD, Blu-ray Discor HD-DVDplayer (or any other external decoder) to these jacks to enjoy these proprietary formats. NOTE: When an HD-DVD or Blu-ray D

46、isc player has an onboard digital decoder, it is not necessary to connect it to the 6-/8-Channel Analog Audio Inputs. Only a digital audio connection (HDMI, coaxial or optical) is needed. Component Video Inputs:If both a video source (e.g., DVD player or HDTV tuner) and your television or video disp

47、lay have analog component video (Y/Pb/Pr) capability and if you are not using HDMI connections for the device, then you may connect the component video outputs of the source to one of the two component video inputs. Do not make any other video connections to that source. Component Video Monitor Outp

48、uts:If you are using one of the Component Video Inputs and your television or video display is component-video-capable and if you are not connecting the HDMI output to our display, you may connect these jacks to the corresponding inputs on your video display. NOTES: Due to copy-protection restrictio

49、ns, there is no output at the Component Video Monitor Outputs for copy-protected sources. High-resolution 1080i and 1080p video signals are not available at the HDMI Output, and are downconverted to 720p for the Component Video Outputs. If your source output is analog high-resolution video, either use the Component Video Outputs, lower the output resolution of your source device, or connect your sources component video outputs directly to your video display.