HarmanKardon-3490-rec-sm维修电路原理图.pdf

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1、 harman/kardon Service Manual HK 3490/230 2 x 120W STEREO RECEIVER CONTENTS LEAKAGE CHECK 2 ESD WARNING 3 TECHNICAL SPECIFICATIONS 4 TROUBLESHOOTING GUIDE 5 FRONT PANEL CONTROLS 6 REAR PANEL CONNECTIONS 7 PACKAGE LIST AND PARTS 8 DISASSEMBLY 9 EXPLODED VIEW AND PARTS 13 ELECTRICAL PARTS LIST 14 SEMI

2、CONDUCTOR PINOUTS 34 PCB DRAWINGS 58 BLOCK DIAGRAM 64 WIRING DIAGRAM 65 AMP BIAS ADJUSTMENT 66 SCHEMATIC DIAGRAMS 67 Released EU2008 harman/kardon, Inc. Rev 0, 09/2008 250 Crossways Park Dr. Woodbury, New York, 11797 harman/kardonHK 3490/230 Service Manual Page 1 of 70 RadioFans.CN 收音机爱 好者资料库 SAFETY

3、 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 current tester between the earth ground and all exposed

4、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 exceed o.5mA. ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLI

5、NED 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 Leakage Test Leakage current tester Reading should not be a

6、bove 0.5mA Earth ground harman/kardonHK 3490/230 Service Manual Page 2 of 70 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 ,

7、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 insulated from the supply circuit

8、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 field effect transistors an

9、d 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 charge on your body by to

10、uching 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 devices, place the assemb

11、ly 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 not classified as anti-sta

12、tic 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 you are ready to install i

13、t. (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 material to the chassis o

14、r 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 brushing together or your cl

15、othes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES devices. CAUTION : harman/kardonHK 3490/230 Service Manual Page 3 of 70 RadioFans.CN 收音机爱 好者资料库 2 Technical Specifications 18 TECHNICAL SPECIFICATIONS Audio Section Stereo Mode C

16、ontinuous Average Power (FTC) HK 3490: 120 Watts per channel, 20Hz20kHz 0.07% THD, both channels driven into 8 ohms HK 3390: 80 Watts per channel, 20Hz20kHz 80dB IF Rejection100dB AM Tuner Section Frequency Range5221620kHz Signal-to-Noise Ratio40dB Usable SensitivityLoop: 500V/M Distortion1kHz, 50%

17、Mod: 0.8% Europe:9kHz Video Section Television SystemNTSC/PAL/SECAM Signal FormatComposite Input Level1Vp-p Input Impedance75 ohms, unbalanced Sync PolarityNegative Output Level1Vp-p Output Impedance75 ohms, unbalanced Video Frequency Response10Hz 10MHz General Power RequirementAC 230V/50Hz Power Co

18、nsumptionHK 3490: 3W standby, 310W maximum (both channels driven) HK 3390: 3W standby, 230W maximum (both channels driven) Dimension (Max) Width440mm Height165mm Depth382mm WeightHK 3490: 10.4kg HK 3390: 9.5kg Depth measurement includes knobs, buttons and terminal connections. Height measurement inc

19、ludes feet and chassis. All features and specifications are subject to change without notice. Harman Kardon and Power for the Digital Revolution are registered trademarks of Harman International Industries, Incorporated. os0015CSK - HK 3390+3490 UK v8c.qxp:18223_HK3480 eng.qxp 13/03/08 13.38 Side 18

20、 (Sort/Black plade) harman/kardonHK 3490/230 Service Manual Page 4 of 70 RadioFans.CN 收音机爱 好者资料库 Troubleshooting Guide TROUBLESHOOTING 17 English This unit is designed for trouble-free operation. Most problems users encounter are due to operating errors. If you have a problem, first check this list

21、for a possible solution. If the problem persists, consult your authorized Harman Kardon Service Center. If the problem is.Make sure that the. No lights appear when System Power2button Unit is plugged into a live outlet. is pressed No sound is heardUnit has not been muted. Correct input function sele

22、ctor button has been pressed. Volume is turned up. Speakers have been turned on using the Speaker Selectors67. No output from one or more channelsCables are not defective: check/replace speaker cables. Tuner sound has a large amount of interference, orAntenna is properly connected. the “Stereo” disp

23、lay is not illuminated, orAntenna is properly located. Tuner sound distorts and/or is noisyAntenna is set in the proper direction. Antenna is adequate to receive the desired station. Tuner is intermittent or continuously buzzing or hissingUnit is away from fluorescent lights, TVs, motors and other e

24、lectrical appliances. Remote does not function correctly Batteries are not weak, and replace them if necessary. Correct device page has been selected by pressing the Source Selector key . Remote sensor is not obstructed, and remote is pointing directly at sensor at an angle of no more than 30 degree

25、s. Also, check for fluorescent lighting, which may be interfering with the IR transmission. Cassette or CD sounds distorted Cassette deck or CD player has not been plugged into the Phono input. (Only use the outputs of a turntable or tonearm with the Phono input.) Turntable sounds distortedTurntable

26、 has been plugged into the Phono Input?, as the other inputs are not compatable with turntable signal levels No video imageVideo source units video ouput is properly connected, the source is turned on and the correct video input on the HK 3490/HK 3390 has been selected Video Monitor Output?is connec

27、ted to a TV or video display, and that the TV is turned on and the proper input on the TV has been selected os0015CSK - HK 3390+3490 UK v8c.qxp:18223_HK3480 eng.qxp 13/03/08 13.38 Side 17 (Sort/Black plade) harman/kardonHK 3490/230 Service Manual Page 5 of 70 RadioFans.CN 收音机爱 好者资料库 1Video 3 input j

28、acks 2System Power Control 3Power Indicator 4Headphone Jack 5Mute 6Speaker 1 Selector 7Speaker 2 Selector 8Phone Input Selector (The Bridge/Phono Input Selector HK 3490 only) 9Tape Monitor Input Selector )Tuning Button !Video 1 Input Selector Preset Scan #CD Input Selector $Video 2 Input Selector %P

29、reset Selector DSP Function Selector (HK 3490 only), Dimmer Switch (HK 3390 only). press it again to turn the unit off (to Standby). Note that the Power Indicator3changes color from amber to white when the unit is on. 3Power Indicator:This LED will illuminate in amber when the unit is in the Standby

30、 mode to signal that the unit is ready to be turned on. When the unit is in operation, the indicator will turn white. A red indicator means that the unit is in the Protect mode, and should be turned off and then checked for a possible speaker wire short circuit. 4Headphone Jack:This jack may be used

31、 to listen to the HK 3490/HK 3390s output through a pair of headphones. Be certain that the head- phones have a standard 6,3 mm stereo phone plug.When a headphone is connected, the Speakers 1 and Speakers 2 Selectors are inac- tive. 5Mute: Press this button to momentarily silence the speaker and pre

32、amp output of the HK 3490/HK 3390. 6Speakers 1 Selector: Press this button to turn the speakers connected to the Speaker 1 output terminals ?on or off. 7Speakers 2 Selector: Press this button to turn the speakers connected to the Speaker 2 output terminals ?on or off. 89 ( 7 )# ! $% & * 3 42 5 66666

33、666666666666666666666666666666666666666666666666666620 22 252326 24211 4 FRONT PANEL CONTROLS Front Panel Controls os0015CSK - HK 3390+3490 UK v8c.qxp:18223_HK3480 eng.qxp 13/03/08 13.38 Side 4 (Sort/Black plade) harman/kardonHK 3490/230 Service Manual Page 6 of 70 RadioFans.CN 收音机爱 好者资料库 6 REAR PAN

34、EL CONNECTIONS Rear Panel Connections ON OFF ? ? ? ? ? ? ? ? F ? ? ? ? ? ? ? ? ? ? ? AM Antenna ? FM Antenna ? Phono Ground ? Remote IR In ? Remote IR Out ? Phono Inputs ? CD Inputs ? Video 1 Audio/Video Play/In ? Tape Monitor Play/In ? Tape Monitor Record/Out ? Video 1 Audio/Video Record/Out ? Vide

35、o 2 Audio/Video Inputs ? Main In ? Video 3 Audio/Video Inputs ? Preamp Out ? Subwoofer Out ? Speaker 1 Terminals ? Speaker 2 Terminals ? Switched AC Outlet ? Power Cable ? Video Monitor Outputs ? The Bridge Input (HK 3490 only) ? Update Cable Input ? Reset Switch ? Coaxial Digital Audio Input (HK 34

36、90 only) ? Optical Digital Audio Input (HK 3490 only) ? Subwoofer Trigger Outputs ? Subwoofer Link On/Off Switches ? Main On/Off Switch os0015CSK - HK 3390+3490 UK v8c.qxp:18223_HK3480 eng.qxp 13/03/08 13.38 Side 6 (Sort/Black plade) harman/kardonHK 3490/230 Service Manual Page 7 of 70 RadioFans.CN

37、收音机爱 好者资料库 harman/kardonHK 3490/230 Service Manual Page 8 of 70 RadioFans.CN 收音机爱 好者资料库 harman/kardonHK 3490/230 Service Manual Page 9 of 70 RadioFans.CN 收音机爱 好者资料库 HK 3490 DISASSEMBLY PROCEDURES TOP-CABINET(21) REMOVAL 1. Remove 13 screws(S1) and then remove the Top-cabinet. FRONT PANEL ASSY REMOVA

38、L 1. Remove the Top-cabinet, referring to the previous step. 2. Disconnect the lead wire(BN22-11P) on the Potentiometer PCB (43-4) from connector(CN22) on the Input PCB(45). 3. Disconnect the lead wire(BN13-9P) on the Front PCB(43-1) from connector(CN13) on the Main PCB(44-1). 4. Disconnect the conn

39、ector(CN87-19P) on the Front PCB(43-1) from connector(CN87) on the Main PCB(44-1). 5. Disconnect the lead wire(BN73-5P) on the Phone PCB(43-3) from connector(CN73) on the Main PCB(44-1). 6. Disconnect the lead wire(BN84-5P) on the Front input video PCB(43-6) from connector(CN84) on the Input PCB(45)

40、. 7. Remove 1 screw(S6) and then lead wire(JW98,JW99-1P) on the PCB(43-5, 43-3). 8. Remove 1 screw(S6) and then lead wire(JW97-1P) on the Power led PCB(43-2). 9. Remove 10 screws(S1) and then remove the Front Panel ASSY. Potentiometer PCB(43-4) REMOVAL 1. Remove the Top-cabinet, referring to the pre

41、vious step. 2. Remove the Front Panel ASSY, referring to the previous step. 3. Remove 2 screws(S3) and then remove the Potentiometer PCB(43-4). PHONE PCB(43-3) REMOVAL 1. Remove the Top-cabinet, referring to the previous step. 2. Remove the Front Panel ASSY, referring to the previous step. 3. Remove

42、 2 screws(S4) and then remove the Phone PCB(43-3). 4. Disconnect the lead wire(BN73-5P) from connector(CN73) on the PHONE PCB(43-3). Volume PCB(43-5) REMOVAL 1. Remove the Top-cabinet, referring to the previous step. 2. Remove the Front Panel ASSY, referring to the previous step. 3. Pull out the Vol

43、ume Knob ASSY . 4. Remove 4 screws(S3) and then Volume PCB(43-5). 5. Disconnect the lead wire(BN81-5P) from connector(CN81) on the Volume PCB(43-5). POWER LED PCB(43-2) REMOVAL 1. Remove the Top-cabinet, referring to the previous step. 2. Remove the Front Panel ASSY, referring to the previous step.

44、3. Remove 2 screws(S3) and then remove the Power led PCB(43-2). 4. Disconnect the lead wire(BN82-5P) from connector(CN82) on the Power led PCB(43-2). Front input video PCB(43-6) REMOVAL 1. Remove the Top-cabinet, referring to the previous step. 2. Remove the Front Panel ASSY, referring to the previo

45、us step. 3. Remove 2 screws(S3) and then remove the Front input video PCB(43-6). harman/kardonHK 3490/230 Service Manual Page 10 of 70 RadioFans.CN 收音机爱 好者资料库 FRONT PCB(43-1) REMOVAL 1. Remove the Top-cabinet, referring to the previous step. 2. Remove the Front Panel ASSY, referring to the previous

46、step. 3. Remove the Potentiometer PCB(43-4) , referring to the previous step. 4. Remove the PHONE PCB(43-3), referring to the previous step. 5. Remove the Volume PCB(43-5), referring to the previous step. 6. Remove the POWER LED PCB(43-2), referring to the previous step. 7. Remove the Front input vi

47、deo PCB(43-6), referring to the previous step. 8. Remove 12 screws(S3) and then remove the Front PCB(43-1). TUNER MODULE(34) REMOVAL 1. Remove the Top-cabinet, referring to the previous step. 2. Disconnect the connector(CON1-Card cable) from connector(CN26) on the Input PCB(45). 3. Remove 2 screws(S

48、5) and then remove the Tuner Module(47). VIDEO PCB(43-8) REMOVAL 1. Remove the Top-cabinet, referring to the previous step. 2. Disconnect the connector(CN85-Card cable) from connector(CN85) on the Input PCB(45). 3. Remove 4 screws(S8,S5) and then remove the Video PCB(43). DSP PCB(46-1) REMOVAL 1. Re

49、move the Top-cabinet, referring to the previous step. 2. Disconnect the connector(CN51,52,71-Card cable) from connector(CN51,52,71) on the Input PCB(45). 3.Disconnect the connector (CN51) from lead wire(BN51-11P) on the Tr PCB(46-2). 4. Remove 5 screws(S8,S5,S14) and then remove the DSP PCB(46-1). INPUT PCB(46-1) REMOVAL 1. Remove the Top-cabi