HarmanKardon-AVR7300-avr-sm 电路图 维修手册.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.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 spec

4、ial significance to safety. When replacing a component 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 deter

5、mine that exposed parts are acceptably insulated 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 typica

6、l ES devices are integrated circuits and some field 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

7、-equipped assembly, drain off any electrostatic 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 r

8、emoving 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 exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static sold

9、er 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-propelled chemicals. These can generate electrical change sufficient to damage ES devices. 6. Do not remove a replacement ES device from i

10、ts protective package until immediately before 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 o

11、f 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 chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES dev

12、ices. (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 sufficient to damage an ES devices. CAUTION : AVR7300 harman/kardonAVR7300 harman/kardon www.freeservicemanuals.infoIts Free www.fre

13、eservicemanuals.info 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 (water pipe, conduit, etc.) by connecting a leakage cur

14、rent 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 power switch on. Any current measured must not excee

15、d 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 reversed (Using AC adapter plug as required) AC Leakag

16、e Test Leakage current tester Reading should not be above 0.5mA Earth ground AVR7300 harman/kardonAVR7300 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 收音机爱 好者资料库 AVR 7300 TECHNICAL SPECIFICATIONS 59 AVR 7300 TECHNICAL SPECIFICATIONS Audio Section Stereo

17、Mode Continuous Average Power (FTC) 125 Watts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohms Seven-Channel Surround Modes 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 l

18、ighting inside the Volume Control ) and the Input/Output Indicator will go out when the panel lights are at half brightness or fully dimmed. 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,pres

19、s the /on the Navigation Button o to select the channel being adjusted, then press the Set Button q, followed by the /on the Navigation Buttono 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-sc

20、reen configuration menus, to scroll through the options list and to select choices for the various settings such as delay, speakers, surround 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. D

21、epending on the menu being used, press- ing the button will either change a specific menu or configuration choice or change the option shown in the on-screen or front-panel display.The sections in this manual describing the units individual features and configuration options contain specific informa

22、tion on how the navigation controls are used. pDigital Select Button: Press this button to assign one of the digital inputs to a source. (See 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 set

23、up procedures for delay time, speaker configuration and channel output level adjustment. HVolume Up/Down Buttons:These controls share the disc 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

24、.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 disc 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 CONT

25、ROL FUNCTIONS AVR7300(120v)-OM 6/14/04 9:15 AM Page 14 AVR7300 harman/kardonAVR7300 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info MAIN REMOTE CONTROL FUNCTIONS 15 MAIN REMOTE CONTROL FUNCTIONS MAIN REMOTE CONTROL FUNCTIONS 15 MAIN REMOTE CONTROL FUNCTIONS s Transport

26、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 compatible 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, accor

27、d- ing to the capabilities of the player being controlled. In the factory default setting, these buttons are prepro- grammed 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 s

28、atellite set-top box. JMain Transport Controls:These buttons have no direct function on the AVR 7300 but are used when the remote is programmed for a compatible DVD, CD or tape player. Pressing these buttons will transmit a stop (), record (), or pause () command, according to the capabilities of th

29、e player being controlled. 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-top box. KTrack Skip Up/

30、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 will 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 pl

31、ayers 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. 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/

32、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 the 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 adequ

33、ate 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, press 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-e

34、nough signal is tuned, the frequency scan will stop and the Lower Display Line $ and the on-screen display will indicate AUTO TUNED.When an FM 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 direc

35、t 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. 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 pr

36、ogramming mode. Once the red LED under the Set Buttonqlights, release the button.You may then select from the desired option. (See pages 46 55 for more information on configuring the remote.) PLight Button: Press this button to activate the remotes backlight for ease of use in darkened rooms. QMulti

37、room Button: Press this button to begin the process of activating the multiroom system or to change the input or volume level for the second 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 se

38、quence of commands stored in the remote. (See page 49 for more information on macros.) ?Sleep Button: Press this button to place the unit in 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 t

39、urn-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. ?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 (

40、center channel) intelligibility at low volume levels. ?OSD Button: Press this button to activate or turn off the On-Screen Display (OSD) system 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 t

41、reble 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 button 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 / Nav

42、igation Buttons o until the display reads TONE OUT.To change the bass or treble settings, press the button again until the desired option appears 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 3

43、5 for more information on the tone controls. ?Mute Button: Press this button to momentarily silence the AVR 7300 or TV set being controlled, 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

44、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 portion 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 b

45、ox, satel- lite receiver or other similar product, they will change the channel up or down. See pages 46 55 for more information on programming 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

46、DVD, CD or tape player. Pressing these buttons will transmit a forward- or reverse-play command, according to the capabilities of the player 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 w

47、hen 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 AVR7300 harman/kardonAVR7300 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info MAIN REMOTE CONTROL FUNCTIONS ? Delay Select Button: This

48、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 message 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 behi

49、nd 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 television 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