HarmanKardon-AVR7300-avr-sm维修电路原理图.pdf

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1、 harman/kardon AVR7300 AVR7300 7 x 110W 7.1 CHANNEL A/V RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 FEATURES.5 FRONT PANEL CONTROLS.6 REAR PANEL CONNECTIONS.10 REMOTE CONTROL FUNCTIONS.14 INSTALLATION/CONNECTIONS.18 OPERATION.21 TROUBLESHOOTING GUIDE.29 PR

2、OCESSOR RESET.29 UNIT EXPLODED VIEW.30 EXPLODED VIEW PARTS LIST.31 BLOCK DIAGRAM.33 CIRCUIT DESCRIPTION.34 DC OFFSET/IDLE CURRENT ADJ.45 BULLETIN HK2005-01.49 TECH TIP HKTT2003-01.50 ELECTRICAL PARTS LIST.51 SEMICONDUCTOR PINOUTS70 PCB DRAWINGS.99 SCHEMATICS146 WIRING DIAGRAM.157 PACKAGING PARTS LIS

3、T.158 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev0 3/2005 www.freeservicemanuals.info RadioFans.CN Eachprecautioninthismanualshouldbefollowedduringservicing. Components identified with the IEC symbolin the parts list are special significance to safety. When replacing a co

4、mponent identified with , use only the replacement parts 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 insulate

5、d from the supply circuit before retuming the product to 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 f

6、ield effect transistors and semiconductor chip components. 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

7、 charge on your body by touching a known earth ground. 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

8、 devices, place the assembly on a conductive surface such 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

9、not classified as anti-static can generate electrical charges 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

10、you are ready to install it. (Most replacement ES devices 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

11、 material to the chassis or circuit assembly into which 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 br

12、ushing together or your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES devices. CAUTION : AVR7300 harman/kardonAVR7300 harman/kardon www.freeservicemanuals.info RadioFans.CN 2 SAFETY PRECAUTIONS The following check should b

13、e performed for the 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/outpu

14、t 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 power switch on. Any current measured must not exceed o.5mA. ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL S

15、HOCK HAZARD AND MUST 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 AVR7300 harman/ka

16、rdonAVR7300 harman/kardon www.freeservicemanuals.info RadioFans.CN AVR 7300 TECHNICAL SPECIFICATIONS 59 AVR 7300 TECHNICAL SPECIFICATIONS Audio Section Stereo Mode Continuous Average Power (FTC) 125 Watts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohms Seven-Channel Surround Mode

17、s Power per Individual Channel Front L regardless of any changes, the display will always return to full brightness when the AVR is turned on.The blue accent lighting inside the Volume Control ) and the Input/Output Indicator will go out when the panel lights are at half brightness or fully dimmed.

18、n Channel Select Button: This button is used to start the process of setting the AVR 7300s output levels to an external source.Once this button is pressed,press the /on the Navigation Button o to select the channel being adjusted, then press the Set Button q, followed by the /on the Navigation Butto

19、no again,to change the level setting.(See page 40 for more information.) oNavigation Button: This single disc-like button is used to navigate through the on-screen configuration menus, to scroll through the options list and to select choices for the various settings such as delay, speakers, surround

20、 modes, digital inputs, etc.To use the button, simply press it left, right, up or down in the direction indicated by the /icons printed on the but- ton disc. Depending on the menu being used, press- ing the button will either change a specific menu or configuration choice or change the option shown

21、in the on-screen or front-panel display.The sections in this manual describing the units individual features and configuration options contain specific information on how the navigation controls are used. pDigital Select Button: Press this button to assign one of the digital inputs to a source. (See

22、 page 37 for more information on using digital inputs.) qSet Button:This button is used to enter settings into the AVR 7300s memory. It is also used in the setup procedures for delay time, speaker configuration and channel output level adjustment. HVolume Up/Down Buttons:These controls share the dis

23、c in the lower portion of the remote with the Channel Up/Down Selector ?.To raise the volume, press the button marked by pressing towards the top of the remote.To lower the volume, press the button marked by pressing towards the bottom of the remote.The /buttons on the left and right sides of this d

24、isc change channels up or down when the TV, cable box or satellite Input Selectors 3have been pressed. 1210 15 MAIN REMOTE CONTROL FUNCTIONS 14MAIN REMOTE CONTROL FUNCTIONS AVR7300(120v)-OM 6/14/04 9:15 AM Page 14 AVR7300 harman/kardonAVR7300 harman/kardon www.freeservicemanuals.infoIts Free www.fre

25、eservicemanuals.info MAIN REMOTE CONTROL FUNCTIONS 15 MAIN REMOTE CONTROL FUNCTIONS MAIN REMOTE CONTROL FUNCTIONS 15 MAIN REMOTE CONTROL FUNCTIONS s Transport Fast-Play/Scan Buttons: These but- tons have no direct function on the AVR 7300, but they are used when the remote is programmed for a compat

26、ible DVD, CD or tape player. Pressing these but- tons will transmit a fast-play forward, fast-play reverse, or fast-forward or fast-reverse scan command, accord- ing to the capabilities of the player being controlled. In the factory default setting, these buttons are prepro- grammed with the remote

27、codes for Harman Kardon DVD players so that you may control a compatible player even when the remote is directly controlling the AVR, a TV set, or a cable or satellite set-top box. JMain Transport Controls:These buttons have no direct function on the AVR 7300 but are used when the remote is programm

28、ed for a compatible DVD, CD or tape player. Pressing these buttons will transmit a stop (), record (), or pause () command, according to the capabilities of the player being controlled. In the factory default setting, these buttons are programmed with the remote codes for Harman Kardon DVD players s

29、o that you may control a compatible player even when the remote is directly controlling the AVR, a TV set, or a cable or satellite set-top box. KTrack Skip Up/Down Buttons: These buttons do not have a direct function with the AVR 7300, but when used with a compatibly programmed CD or DVD changer wil

30、l change the track or chapter currently being played.In the factory default setting,these buttons are programmed with the remote codes for Harman Kardon DVD players so that you may control a compatible player even when the remote is directly controlling the AVR, a TV set, or a cable or satellite set

31、-top box. LPreset Up/Down Button: When the tuner is in use, press this button to scroll through the stations programmed into the AVR 7300s memory. w Tuning Up/Down Button: Press this button when the tuner is in use to change the station to one with a higher or lower frequency.When the tuner is in th

32、e MANUAL/MONO mode, each tap of the selector will increase or decrease the frequency by one increment.When the tuner receives a strong- enough signal for adequate reception, MANUAL TUNED will appear in the Lower Display Line $ and in the on-screen display.When the tuner is in the AUTO/STEREO mode, p

33、ress the button once, and the tuner will scan for a station with accept- able signal strength.When the next higher- or lower- frequency station with a strong-enough signal is tuned, the frequency scan will stop and the Lower Display Line $ and the on-screen display will indicate AUTO TUNED.When an F

34、M Stereo station is tuned, the display will read AUTO ST TUNED. See page 35 for more information on using the tuner. NDisc Skip Button:This button has no direct function for the AVR 7300 but may be used to change the disc in a CD or DVD changer when the remote is programmed for that type of device.

35、OProgram Button: This button is used to begin the process of programming the remote. Press and hold this button for three seconds to place the remote in the programming mode. Once the red LED under the Set Buttonqlights, release the button.You may then select from the desired option. (See pages 46 5

36、5 for more information on configuring the remote.) PLight Button: Press this button to activate the remotes backlight for ease of use in darkened rooms. QMultiroom Button: Press this button to begin the process of activating the multiroom system or to change the input or volume level for the second

37、zone. (See page 44 for more information on the multiroom system.) ?Macro Buttons: Press these buttons to store or recall a “Macro”, which is a preprogrammed sequence of commands stored in the remote. (See page 49 for more information on macros.) ?Sleep Button: Press this button to place the unit in

38、the Sleep mode.After the time shown in the display, the AVR 7300 will automatically go into the Standby mode. Each press of the button changes the time until turn-off in the following order: When the Sleep timer is in use, the front-panel dis- plays and other indicators will dim to half-brightness.

39、?Night Mode Button: Press this button to activate the Night mode.This mode is available in specially encoded Dolby Digital sources, and it preserves dialogue (center channel) intelligibility at low volume levels. ?OSD Button: Press this button to activate or turn off the On-Screen Display (OSD) syst

40、em used to set up or adjust the AVR 7300s parameters. ? Tone Control Button: This button controls the tone mode settings, enabling adjustment of the bass and treble boost/cut.You may also use it to take the tone controls out of the signal path completely for “flat” response.The first press of the bu

41、tton displays a TONE IN message in the Lower Display Line $ and in the on-screen display.To take the controls out of the signal path, press either of the / Navigation Buttons o until the display reads TONE OUT.To change the bass or treble settings, press the button again until the desired option app

42、ears in the Lower Display Line $ and on-screen display and then press either of the /Navigation Buttons o to enter the desired boost or cut setting. See page 35 for more information on the tone controls. ?Mute Button: Press this button to momentarily silence the AVR 7300 or TV set being controlled,

43、depending on which device has been selected. ?AM/FM Button: Press this button to select the AVR 7300s tuner as the listening choice. Pressing this button when the tuner is already in use will select between the AM and FM bands. ?Channel Up/Down Selector:These selectors share the disc in the lower po

44、rtion of the remote with the Volume Up/Down ButtonsH.They have no function when the AVR is being controlled, but when programmed for use with a VCR,TV, cable box, satel- lite receiver or other similar product, they will change the channel up or down. See pages 46 55 for more information on programmi

45、ng the remote. ?Transport Play Buttons:These buttons have no direct function on the AVR 7300, but they are used when the remote is programmed for a compatible DVD, CD or tape player. Pressing these buttons will transmit a forward- or reverse-play command, according to the capabilities of the player

46、being controlled. In the factory default setting, these buttons are programmed for Harman Kardon DVD players so that you may control a compatible player even when the remote is directly controlling the AVR, a TV set or a cable or satellite set-top box. AVR7300(120v)-OM 6/14/04 9:15 AM Page 15 AVR730

47、0 harman/kardonAVR7300 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info MAIN REMOTE CONTROL FUNCTIONS ? Delay Select Button: This button selects adjustments to the A/V Sync Delay and the individual channel delays.The first press of the button displays an A/V SYNC DELAY m

48、essage in the Lower Display Line $ and in the on-screen display, which means that you may change the amount of time that all channels are delayed together behind the video. This enables you to compensate for the loss of lip sync that may be caused by digital video processing in your display or by te

49、levision stations.To change the A/V Sync Delay, press the Set Button q while the A/V SYNC DELAY message is visible and then use the /Navigation Button o to change the setting so that the sound and the video image are in sync.To change the delay for an individual output channel, press the / Navigation Button o until the desired channel name is shown, and then press the Set Butto