HarmanKardon-3490-rec-sm维修电路图 手册.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 SAFETY PRECAUTION

3、S 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 metal parts

4、 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 OUTLINED ABOVE A

5、RE 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 above 0.5mA

6、Earth ground harman/kardonHK 3490/230 Service Manual Page 2 of 70 RadioFans.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 replaceme

7、nt 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 before retuming the pr

8、oduct 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 and semiconductor chip c

9、omponents. 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 g

10、round. 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 sur

11、face 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-static can generate elect

12、rical 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 it. (Most replacement E

13、S 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 or circuit assembly int

14、o 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 clothes fabric or the li

15、fting 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 2 Technical Specifications 18 TECHNICAL SPECIFICATIONS Audio Section Stereo Mode Continuous Average Power (FTC) HK

16、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% Mod: 0.8% Europe:9kHz Video Secti

17、on 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 ConsumptionHK 3490: 3W standby, 310

18、W 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 includes feet and chassis. All featu

19、res 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 (Sort/Black plade) harman/kardon

20、HK 3490/230 Service Manual Page 4 of 70 RadioFans.CN 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 for a possible solution. If the problem pers

21、ists, 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 selector button has been pressed. Volume is turn

22、ed 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” display is not illuminated, orAntenna is properl

23、y 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 electrical appliances. Remote does not functi

24、on 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 degrees. Also, check for fluorescent lighting, whi

25、ch 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 has been plugged into the Phono Input?, as

26、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 connected to a TV or video display, and that the T

27、V 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 1Video 3 input jacks 2System Power Control 3Power Indicator 4Headphone

28、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 %Preset Selector DSP Function Selector (HK 3490 only), Di

29、mmer 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 mode to signal that the unit is ready to be turned on.

30、 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 to listen to the HK 3490/HK 3390s output through a pai

31、r 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 preamp output of the HK 3490/HK 3390. 6Speakers 1 Selector

32、: 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 66666666666666666666666666666666666666666666666666666666620

33、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 6 REAR PANEL CONNECTIONS Rear Panel Connections ON OFF ? ? ? ? ? ? ? ? F ? ?

34、 ? ? ? ? ? ? ? ? ? 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 ? Video 2 Audio/Video Inputs ? Main In ? Video 3 Audio/Video Inputs ? Pr

35、eamp 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 3490 only) ? Optical Digital Audio Input (HK 3490 only) ? Subwoofer

36、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 harman/kardonHK 3490/230 Service Manual Page 8 of 70 RadioFans.CN

37、harman/kardonHK 3490/230 Service Manual Page 9 of 70 RadioFans.CN HK 3490 DISASSEMBLY PROCEDURES TOP-CABINET(21) REMOVAL 1. Remove 13 screws(S1) and then remove the Top-cabinet. FRONT PANEL ASSY REMOVAL 1. Remove the Top-cabinet, referring to the previous step. 2. Disconnect the lead wire(BN22-11P)

38、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 connector(CN87-19P) on the Front PCB(43-1) from connector(CN87) on the Main PCB(44-1). 5. Disconnect th

39、e 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). 7. Remove 1 screw(S6) and then lead wire(JW98,JW99-1P) on the PCB(43-5, 43-3). 8. Remove 1 screw(

40、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 previous step. 2. Remove the Front Panel ASSY, referring to the previous step. 3. Remove 2 screws(S3)

41、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 2 screws(S4) and then remove the Phone PCB(43-3). 4. Disconnect the lead wire(BN73-5P) from connec

42、tor(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 Volume Knob ASSY . 4. Remove 4 screws(S3) and then Volume PCB(43-5). 5. Disconnect the lead wire(BN81-

43、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. 3. Remove 2 screws(S3) and then remove the Power led PCB(43-2). 4. Disconnect the lead wire(BN82-5P

44、) 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 previous step. 3. Remove 2 screws(S3) and then remove the Front input video PCB(43-6). harman/kardonHK 34

45、90/230 Service Manual Page 10 of 70 RadioFans.CN 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 step. 3. Remove the Potentiometer PCB(43-4) , referring to the previous step. 4. Remove the PHONE PCB(43-3), r

46、eferring 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 video PCB(43-6), referring to the previous step. 8. Remove 12 screws(S3) and then remove the Front PCB(43-1). TU

47、NER 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(S5) and then remove the Tuner Module(47). VIDEO PCB(43-8) REMOVAL 1. Remove the Top-cabinet, referring to the p

48、revious 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. Remove the Top-cabinet, referring to the previous step. 2. Disconnect the connector(CN51,52,71-Card cable) from

49、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-cabinet, referring to the previous step. 2. Disconnect the connector(CN21-Card cable) from connector(CN21) on the