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1、 harman/kardon AVR745 AVR745 A/V DOLBY DIGITAL RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 PACKAGE.5 PACKAGE PARTS LIST.6 FRONT PANEL CONTROLS.7 REAR PANEL CONNECTIONS.10 REMOTE CONTROL FUNCTIONS.13 INSTALLATION/CONNECTIONS17 OPERATION21 TROUBLESHOOTING GU
2、IDE.30 PROCESSOR RESET.30 UNIT EXPLODED VIEW31 EXPLODED VIEW PARTS LIST.32 IDLE CURRENT ADJUST.34 BLOCK DIAGRAM(S)37 SEMICONDUCTOR PINOUTS.40 PCB DRAWINGS.91 ELECTRICAL PARTS LIST.104 SCHEMATICS.129 WIRING DIAGRAM.146 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev0 10/2006 R
3、adioFans.CN 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 parts designated, or parts with the same ratings or resistance,
4、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 to the customer. Some semiconductor (solid state) devices can
5、 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 components. The following techniques should be used to help reduce t
6、he 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. Alternatively, obtain and wear a commercially available disc
7、harging 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 such as aluminum foil, to prevent electrostatic charge build-u
8、p 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 charges sufficient to damage ES devices. 5. Do not use freon-
9、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 devices are packaged with leads electrically shorted together by
10、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 the device will be installed. Be sure no power is applied t
11、o 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 of your foot from a carpeted floor can generate static electr
12、icity sufficient to damage an ES devices. CAUTION : AVR745 harman/kardonharman/kardon RadioFans.CN 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 (
13、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, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn the A
14、C 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 MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. Device under test Test all exposed metal surfaces Also test with plug
15、reversed (Using AC adapter plug as required) AC Leakage Test Leakage current tester Reading should not be above 0.5mA Earth ground AVR745 harman/kardonharman/kardon 3 RadioFans.CN AVR 745 TECHNICAL SPECIFICATIONS 58TECHNICAL SPECIFICATIONS Audio Section Stereo Mode Continuous Average Power (FTC) 100
16、 Watts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohms Seven-Channel Surround Modes Power per Individual Channel Front L 1,405W at rated power output (7 channels driven) DimensionsProductShipping Width17-5/16 inches (440mm)20-1/16 inches (510mm) Height6-1/2 inches (165mm)10 inche
17、s (254mm) Depth17-1/16 inches (435mm)22-3/16 inches (565mm) Weight44 lb (19.9kg)51 lb (23.1kg) Depth measurement includes knobs, buttons and terminal connections. Height measurement includes feet and chassis. All features and specifications are subject to change without notice. Harman Kardon, Harman
18、 International and Logic 7 are registered trademarks of Harman International Industries, Incorporated. and are trademarks of Harman International Industries, Incorporated. Dolby, Pro Logic and the Double-D symbol are registered trademarks of Dolby Laboratories. Manufactured under license from Dolby
19、Laboratories. DTS, DTS Surround, DTS-ES, DTS 96/24 and DTS Neo:6 are registered trademarks of DTS, Inc. A-BUS and A-BUS/READYare registered trademarks of Leisure Tech Electronics Pty Ltd Australia. SACD is a trademark of Sony Corporation. iPod is a registered trademark of Apple Computer, Inc. DLP an
20、d Texas Instruments are trademarks of Texas Instruments. Faroudja and DCDi by Faroudja are trademarks of Genesis Microchip, Inc. HD-DVD is a trademark of the DVD Format/Logo Licensing Corporation (DVD FLLC). HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered tr
21、ademarks of HDMI Licensing, LLC. Microsoft,Windows and Windows Media are registered trademarks of Microsoft Corporation in the United States and other countries. XM-Ready is a registered trademark of XM Satellite Radio, Inc. The BridgeTM Supplied Accessories The AVR 745 is supplied with the followin
22、g accessory items. Please note that they are packed in different boxes, so it is important to check each individual box before reporting missing items. If any item is missing, please contact Harman Kardon customer service at . TC 30 remote control TC 30 software CD-ROM microphone Battery for the TC
23、30 TC 30 installation guide Extender rod for microphone USB cable for the TC 30 ZR 10 remote control AM loop antenna TC 30 charging cradle Two AAA batteries for ZR 10 FM wire antenna Charger for the TC 30 AC power cord Please register your product on our Web site at . NOTE:Youll need the serial numb
24、er of your AVR.At the same time, you can choose to be notified about our new products and/or special promotions. AVR 745 OM 5/15/06 5:00 PM Page 58 AVR745 harman/kardonharman/kardon 4 RadioFans.CN AVR745 harman/kardonharman/kardon 5 RadioFans.CN LEGEND FOR AVR745 PACKAGE PAGE AVR745 US Packing Part
25、List Item #Part NumberDescriptionQty 1LABEL BARCODE AVR745US2 2ZKD2704HA00-RBOX CARTON AVR745US1 3ZKD2701HA00-ROWNERS MANUAL AVR745US1 4ZQD1201HAWH-RCUSHION POLY EPS RIGHT1 5FILM SHEET PE 920 X 10001 6H03-WAUSA2103BK-RPOWER CORD WS-004C+002E SJT#14*2C L=2M1 7ZQD1202HAWH-RCUSHION POLY EPS LEFT 1 8ZKD
26、2802HA04-RAVR745 TOTAL ACCESSORY BOX1 9H03-RYD2701HB00-RREMOCON W/ ACCESSORY BOX AVR745US1 10ZBP00122051-RBAG PE 330 X245 T0.051 11ZKD2716HA00-RQUICK SETUP GUIDE AVR7451 12ZKC1214HA00-RLABEL SAFETY LEAFLET1 13ZKC1113HA00-RCARD WARRANTY1 14ZKD1263HA00-RBROCHURE AVR US1 15ZKC1263HA00-R-0INSERT RS232 N
27、OTE PAPER1 16H03-ZPD1212INBK-RMICROPHONE ASSY EXTENSION PIECE1 17BOX ANTENNA1 18ZBP00161851-RBAG PE 160X180MM1 19H03-WAB01200203-RANTENNA WIRE 75 T15011N-11 20H03-ATALF039ABK-RANTENNA WIRE ANTENNA LOOP-3001 21ZBP00020350-RPOLYBAG BATTERY1 22BATTERY ALKALINE 1.5V AAA2 23ZKD2802HA03-RBOXZONE I1 REMOTE
28、 CONTROLLER1 24H03-RYD2702HA00-RREMOCON ZONE 2 AVR7451 25ZKD2802HA02-RBOX MIC1 26H03-MCD12TWBKNN-RMICROPHONE ASSY1 AVR745 harman/kardonharman/kardon 6 RadioFans.CN FRONT-PANEL CONTROLS 1 Standby/On Switch 2 Surround Mode Group Selector 3 Surround Mode Selector 4 Tuning Selector 5 Tuner Band Selector
29、 6 Preset Station Selector 7 Input Source Selector 8 Tuning Mode Selector 9 Front-Panel Door ) Volume Control ! Input Indicators Speaker/Channel Input Indicators # Upper Display Line $ Lower Display Line % Surround Mode Indicators Remote Sensor Window FRONT-PANEL CONTROLS FRONT-PANEL CONTROLS5 5 The
30、 following controls and indicators are available on the AVR 745s front panel: The following controls and jacks are located behind the front-panel door.To open the door, place the edge of a finger on the left or right edge of the panel and gently swing the door down toward you. A Main Power Switch B
31、Headphone Jack C Tone Mode Button D Speaker Selector Button E Channel Adjust Selector F Digital Input Selector G Delay Adjust Selector H / Buttons I Set Button J EzSet/EQII Microphone Jack K Optical 4 Digital Input L Input/Output Status Indicators M Coaxial 4 Digital Jack N Video 4 Input/Output Jack
32、s 1 Standby/On Switch: When the Main Power Switch A is “ON,” press this button to turn on the AVR 745; press it again to turn the unit off. Note that the illumination surrounding the switch will turn blue when the unit is on, or in the Multiroom mode. 2 Surround Mode Group Selector: Press this but-
33、ton to select the top-level group of surround modes. Each press of the button will select one of the sur- round mode categories. Once the button is pressed so that the name of the desired surround mode category appears in the on-screen display and in the Lower Display Line $, press the Surround Mode
34、 Selector 3 to cycle through the individual modes available. For example, press this button to select Dolby modes, and then press the Surround Mode Selector 3 to choose from the various mode options. 3 Surround Mode Selector: Press this button to select from among the available surround mode options
35、 for the surround mode category selected. The specific modes will vary based on the number of speakers available, the surround mode category and whether the input source is digital or analog. For exam- ple, press the Surround Mode Group Selector 2 to select a category such as Dolby or Logic 7, and t
36、hen press this button to see the specific mode choices that are available. For more information on mode selection, see pages 40 42. NOTE: To make it easier to follow the instructions that refer to this illustration, a larger copy may be downloaded from the Product Support section for this product at
37、 . 2 4 5 6 7 9 ! # % 3 8 A B D E F G H H I J K L L N M ) $ 1 C AVR 745 XMFMAM USB DMP TAPE 8CH 6CH DVD DIGITAL PRO LOGIC IIx HEADPHONE VIRTUAL SPEAKER 57CH. STEREO EQ 1 2 3 DIRECT DSP SURR. OFF CDMI HDMI VID 34 VID 12 AVR 745 OM 5/15/06 5:00 PM Page 5 AVR745 harman/kardonharman/kardon 7 RadioFans.CN
38、 FRONT-PANEL CONTROLS 6 FRONT-PANEL CONTROLS 4 Tuning Selector: Press the left side of the button to tune lower-frequency stations and the right side of the button to tune higher-frequency stations.When the tuner is in the MANUAL/MONO mode, each tap of the Selector will increase or decrease the freq
39、uency by one increment.When the tuner receives a signal strong enough 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, press the button once, and the tuner will scan for a station with acceptable sign
40、al strength.When the next higher- or lower-frequency station 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 45 for more information on using the t
41、uner.When an XM-Ready module is connected and activated, and when there is sufficient signal strength for the XM system to operate, pressing this button will change the XM Radio channel. 5 Tuner Band Selector: Pressing this button will automatically switch the AVR 745 to the Tuner mode. Pressing it
42、again will select the AM or FM frequency band, or XM Radio. (See page 45 for more informa- tion on the tuner.) 6 Preset Station Selector: Press this button to scroll up or down through the list of stations that have been entered into the preset memory. (See page 46 for more information on tuner prog
43、ramming.) 7 Input Source Selector: Press this button to change the input by scrolling up or down through the list of input sources. 8 Tuning Mode Selector: Press this button to select Auto or Manual tuning.When the button is pressed so that AUTO/STEREO appears in the Upper Display Line #, the tuner
44、will search for the next station with an acceptable signal when the Tuning Selector 4is pressed.When the button is pressed so that MANUAL/MONO appears in the Upper Display Line #, each press of the Tuning Selector 4will increase the frequency. (See pages 4546 for more information on using the tuner.
45、) This button may also be used to switch between Stereo and Mono modes for FM radio reception.When weak reception is encountered, select the Manual/Mono tuning mode. Press and hold again to switch back to Stereo mode. (See pages 4546 for more information on using the tuner.) When an XM Connect it si
46、m- ply indicates that the video display is not compatible. HDMI Input Connections The different “Version” levels of HDMI define which type of audio signals it is compatible with. Based on the lowest level of HDMI among your sources, the connections to the AVR should be made as follows: HDMI 1.0 sour
47、ces carry digital video and multi- channel or 2-channel PCM audio signals only. Connect the HDMI output of a 1.0 source to either of the HDMI Inputs N on the AVR. If the product is a DVD-Audio player or other source that has mul- tichannel analog audio outputs, connect them to the 8-Channel Direct I
48、nputs f.With an HDMI 1.0 source, particularly a DVD player, make certain that the menus in the source device are set to “Bitstream Out” or “Original” so that 5.1 digital audio is available. If you find that 5.1 Dolby Digital or DTS audio is not available on the HDMI connection, it will be necessary
49、to make an additional connection between the source and the AVR 745 to either the Coaxial dM or Optical eK Digital Inputs. HDMI 1.1 sources carry the multichannel digital audio output from DVD-Audio players in addition to the digital video. If you have an HDMI 1.1-equipped product, the only connection needed for listening in the main room is from the HDMI output of the source to either of the HDMI I
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