HarmanKardon-3470-rec-sm维修电路原理图.pdf

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1、The Harman KardonModel HK 3370 / HK 3470 Manual ASTEREO RECEIVERCONTENTSTECHNICAL SPECIFICATIONS.3ALIGNMENT PROCEDURES 5CIRCUIT DESCRIPTION.8BLOCK DIAGRAM.16DISASSEMBLY PROCEDURES.17EXPLODED VIEW.19PRINCIPAL SCREW LOCATION.21PARTS LIST.27IC BLOCK DIAGRAM.63PRINTED CIRCUIT BOARDS.71SCHEMATIC DIAGRAMS

2、 .77WIRING DIAGRAM82PACKING MATERIAL83 harman/kardonParts and Service Office80 Crossways Park West, Woodbury, N.Y. 11797 Printed in KoreaPowerPhonesMuteSpeaker 1Speaker 2FMAMFM ModeVolumeBassMinMaxTrebleBalancePhonoT- MonTapeCDAuxDimmerSleepPresetTuningPreset ScanMinMaxLRwww.freeservicemanuals.info9

3、/9/2013World of free manualsRadioFans.CN 收音机爱 好者资料库15 TROUBLESHOOTING GUIDETroubleshooting GuideThis unit is designed for trouble-free operation. Most problems users encounter are due to operating errors. So, if you have a problem, firstcheck this list for a possible solution. If the problem persist

4、s, consult your authorized Harman Kardon Service Center.If the problem is.Make sure that the.No lights illuminate when POWER button is pressedUnit is plugged into a live outletMain power switch is pressed inNo sound is heardUnit has not been mutedCorrect input function selector button has been press

5、edVolume is turned upThe speakers have been turned on using the Speaker SelectorsNo output from one or more channelsCables are not defective: check/replace speaker cablesTuner sound has a large amount of interference, orThe antenna is properly connectedThe “Stereo” display is not illuminated, orThe

6、antenna is properly locatedTuner sound distorts and/or volume level is too lowThe antenna is set in the proper directionThe antenna is adequate to receive the desired stationTuner is intermittent or continuously buzzing or hissingThe unit is away from fluorescent lights,TVs, motors and other electri

7、cal appliancesTechnical SpecificationsAudio SectionStereo Mode Continuous Average Power (FTC)70 Watts per channel, 20Hz20kHz 0.07% THD, both channels driven into 8 ohms95 Watts per channel, 20Hz20kHz 80dBIF Rejection100dBTuner Output Level1kHz, 100kHz Dev 500mVAM Tuner SectionFrequency Range5201710k

8、HzSignal-to-Noise Ratio40dBUsable SensitivityLoop 500V/MDistortion1kHz, 50% Mod 0.8%Selectivity10kHz, 25dBGeneralPower RequirementAC 120V/60HzPower Consumption72W idle, 332W maximum (both channels driven)Dimension (Max)Width17.4 inches (442mm)Height6.1 inches (156mm)Depth16.3 inches (415mm)Weight24.

9、6 lb (11.2kg)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 is a registered trademark, and Power for the digital revolution is a trademark, of Harman Ka

10、rdon, Inc.www.freeservicemanuals.info9/9/2013World of free manualsRadioFans.CN 收音机爱 好者资料库hk33704250 Crossways Park Drive,Woodbury, New York 11797 2000 Harman Kardon, Incorporated Part #YIAR-K1001-02ATechnical SpecificationsAudio SectionStereo Mode Continuous Average Power (FTC)100 Watts per channel,

11、 20Hz20kHz 0.07% THD, both channels driven into 8 ohms135 Watts per channel, 20Hz20kHz 80dBIF Rejection100dBTuner Output Level1kHz, 100kHz Dev 500mVAM Tuner SectionFrequency Range5201710kHzSignal-to-Noise Ratio40dBUsable SensitivityLoop 500V/MDistortion1kHz, 50% Mod 0.8%Selectivity10kHz, 25dBGeneral

12、Power RequirementAC 120V/60HzPower Consumption72W idle, 332W maximum (both channels driven)Dimension (Max)Width17.4 inches (442mm)Height6.1 inches (156mm)Depth16.3 inches (415mm)Weight26.8 lb (12.1kg)Depth measurement includes knobs, buttons and terminal connections. Height measurement includes feet

13、 and chassis.All features and specifications are subject to change without notice.Harman Kardon is a registered trademark, and Power for the digital revolution is a trademark, of Harman Kardon, Inc.VMAx is a registered trademark of Harman International Industries, Inc., and is an implementation of C

14、ooper Bauck Transaural Stereo under patent license.www.freeservicemanuals.info9/9/2013World of free manuals51. Test Equipment Required.?AM Standard Signal Generator (AM SSG) ?Audio Generator?Oscilloscope ?Distortion Meter?AC Voltmeter ?DC Voltmeter?FM Standard Signal Generator (FM SSG) ?Frequency Co

15、unter?Stereo ModulatorNote: Disconnect external FM antenna prior to alignment2. Alignment and Test Points3. AM IF and RF AlingmentPreparation1. Output of signal Generator should not be higher than necessary to obtain an optimum output reading.2. Signal Generator Modulation: 30%3. Switch: Press to AM

16、.? ? ? ? !?#? ? ? ?$?$?%?&?(?)*?+? !?#? ? ? ?$?$?%?&?(?)*? !?#? ? ? ?$?$?%?&?(?)*? !?,-?./?0?1?2%?1? ? ? ?.?.?3?/?4?5 ?)? ?)?6?7?8?$?339?&#?/#?6?:?;?:www.freeservicemanuals.info9/9/2013World of free manuals5. MPX Alignment, SM AlignmentPreparation1. Switch: Press to FM2. Tuner for 98MHz on band.3. S

17、ignal Generator output level: 1000V? ? ?5. !? ?#?$?$?%&?$? ?%&?(? !#$ !#$ !#$ !#$%?%?%?%?&?&?&?&? ? ? ?+?/?.?)8? ?4$?$?%&?(?)*?:?4?)8? ?$?(#.?:?#?:?#?#?/#? ? ? ?+?/?.?)8? ?-$?$?%&?(?)*?:?4?)8? ?4?$? !.8?#?.?7? ? ? ?+?/?.?)8? ?4$?$?%&?(?)*?:?-?)8? ?4?3?.?3?/?5:?0?#?)?#? ? ? !? ?3?/.? ?)?/?7?8?3?/?(#.

18、?4?# ?0?#? ? !.?:?8?.?/.? ?2?.?www.freeservicemanuals.info9/9/2013World of free manuals3. Circuit DescriptionCPU(IC401) :uPD780204GF1. Pin Configurationwww.freeservicemanuals.info9/9/2013World of free manuals2. Pin DescriptionPin No.Pin NameI/OACTIVEPORT NAMEREMARK1Vdd-H+5VSystem power supply2P37IHK

19、R4Key read 43P36IHKR3Key read 34P35IHKR2Key read 25P34IHKR1Key read 16P33-Not used7P32-Not used8P31OH/LPWR_LED(RED)L:AMBER L:GREEN H:RED9P30OH/LPWR_LED(GRN)L:STBY H:OPER L:PROT10RESETILSystem resetLow reset11X2-OSCMain system osc.12X1I-OSC-13Vpp-Conneced to Vss14XT2-Not used15P04/XT1IH/LOPT_RDSRds o

20、n/off16Vdd-H+5VSystem power supply17P27-Not used18P26-Not used19P25ILPWR DOWNDetect power off20P24OHPWR_RLYPower Relay on/off21P23OHVR_UPVolume up22P22OHVR_DOWNVolume Down23P21ILPROTECTDetect protection24P20OHPWR_MUTEPower Mute25AVss-LGNDAnalog ground26P17OHPRE_MUTEPre mute27P16OHTUNER_MUTETuner mut

21、e28P15IH/LIF_INIF conter in29P15OHPLL CE30P13OHPLL CLOCK31P12OH/LPLL DATA32P11ILTUNEDTuned in on : L33P10ILSTEREOStereo in on : L34Avdd-H+5VAnalog power supply35Avref-LGND36P03-Not used37INTP2ILRDS CLKRds clock in38P01IHRDS DATA Rds data in39P00ILREMOCON INRemocon data in40Vss-LGNDGround41P74OH/L782

22、11 CLK42P73OH/L78211 CE43P72-Not used44P71-Not used45P70-Not used46 Vdd - H +5VuPD780204GF QFP Typewww.freeservicemanuals.info9/9/2013World of free manualsPin No.Pin NameI/OACTIVEPORT NAMEREMARK47P127-Not used48P127-Not used49P125-Not used50P124OH/L78211 DATA51P123-Not used52P122-Not used53P121-Not

23、used54P120-Not used55P117OHVMAXVMAx on/off56P116OHSPK1_RLYSpeaker1 relay on/off57P115OHSPK2_RLYSpeaker2 relay on/off58P114OHSPK1_LEDSpeaker1 led on/off59P113OHSPK2_LEDSpeaker2 led on/off60P112OHSPK12_LEDSpeaker1/2 led on/off61P111-62P110-63P107OHVR_LEDVolume led on/off64P106IH/LOPT_STEPL:E.U. , H:US

24、A65P105IH/LOPT_3400/3700L:3400, H:337066FIP33OHS18FIP segment output67FIP32OHS17FIP segment output68FIP31OHS16FIP segment output69FIP30OHS15FIP segment output70FIP29OHS14FIP segment output71FIP28OHS13FIP segment output72FIP27OHS12FIP segment output73FIP26OHS11FIP segment output74FIP25OHS10FIP segmen

25、t output75FIP24OHS9FIP segment output76FIP23OHS8FIP segment output77FIP22OHS7FIP segment output78FIP21OHS6FIP segment output79Vload-VloadFIP DRIVER VOLTAGE80FIP20OHS5FIP segment output81FIP19OHS4FIP segment output82FIP18OHS3FIP segment output83FIP17OHS2FIP segment output84FIP16OHS1FIP segment output

26、85FIP15OHG16FIP grid output86FIP14OHG15FIP grid output87FIP13OHG14FIP grid output88FIP12OHG13FIP grid output89FIP11OHG12FIP grid output90FIP10OHG11FIP grid output91FIP9OHG10FIP grid output92FIP8OHG9FIP grid output93FIP7OHG8FIP grid output94FIP6OHG7FIP grid output95FIP5OHG6FIP grid outputwww.freeserv

27、icemanuals.info9/9/2013World of free manualsPin No.Pin NameI/OACTIVEPORT NAMEREMARK96FIP4OHG5FIP grid output97FIP3OHG4FIP grid output98FIP3OHG3FIP grid output99FIP1OHG2FIP grid output100FIP0OHG1FIP grid output123456PLL MODE 1PLL MODE 2PLL MODE 3PLL MODE 2PLL MODE 3PLL MODE 1?562314?A dotted line (.)

28、 : In case that IF COUNT is not proper, follow PLL MODE of56 When changing BAND, selecting the PRESET STATION using TEN KEY and selecting the PRESET STATION using PRESET CHANNEL UP/DOWNWhen IF COUNT is not proper in case that the frequency is not tuned?1231456?43. Timing Chart (IF Count)www.freeserv

29、icemanuals.info9/9/2013World of free manuals?111111?MANUAL TUNING UP/DOWN?MANUAL TUNING UP/DOWN KEY OFF?1231456?www.freeservicemanuals.info9/9/2013World of free manuals?1231456?123131?12231456?- AUTO TUNING UP/DOWN- POWER ONwww.freeservicemanuals.info9/9/2013World of free manuals4. Pheriperal IC Ope

30、ration1) FUNCTION IC. : LC7821-1/3?www.freeservicemanuals.info9/9/2013World of free manuals2) PLL IC. (LC7218)?2) MODE 2 : FREQUENCY OUT/ OUTPUT CONTROL3) MODE 3 : IF COUNT READ?1) MODE 1 : FREQUENCY OUT/ TUNED CHECK?www.freeservicemanuals.info9/9/2013World of free manuals4. BLOCK DIAGRAMHK3370 / HK

31、3470www.freeservicemanuals.info9/9/2013World of free manuals CHASSIS-TOP(44) REMOVAL. Remove 9 screws(A,K) and then remove the Chassis-top(44). FRONT PANEL ASSY(AA) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step . 2. Disconnect the connector(CN 301, Card-cable) on the Front P

32、. C. Board(d) from connector(CN 115) on the Main P. C. Board (i). 3. Disconnect the lead wire(CW 302, 5P) on the Front P. C. Board(d) from connector(CN 702) on the Volume Volume P. C. Board (b). 4. Disconnect the connector(CN 801, 2P) on the Standby P. C. Board(g) from connector(CN 102) on the Main

33、P. C. Board (i). 5. Remove 1 screw(I) of Chassis-panel(37) and then lead wire(H 801, 1P) on the Phones P. C. Board(e). 6. Disconnect the lead wire(CW 301, 7p) on the Front P. C. Board(d) from connector(CN 113) on the Main P. C. Board(i). 7. Disconnect the lead wire(CW 801, 3P) on the Phones P. C. Bo

34、ard(e) from connector(CN 401) on the Amp P. C. Board(h). 8. Remove 1 screw(I) of Chassis-panel(37) and then lead wire(H 501, 1P) on the Tone P. C. Board (c). 9. Disconnect the lead wire(CW 701, 10P) on the Volume P. C. Board(b) from connector (CN 109) on the Main P. C. Board(i). 10. Remove 9 screws(

35、H, I) and then remove the Front Panel ASSY(AA). FRONT P. C. BOARD(d) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step. 2. Remove the Front-panel ASSY(AA), referring to the previous step. 3. Disconnect the lead wire(CW 302, 5P) from connector(CN 702) on the Volume P. C. Board(b)

36、. 4. Disconnect the connector(CN 302) from lead wire(CW 801,5P) on the Power P.C.Board (f). 5. Remove 15 screws(J) and then remove the Front P.C.Board(d). VOLUME P.C.BOARD(b) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step. 2. Remove the Front-panel ASSY(AA), referring to the

37、previous step. 3. Disconnect the connector(CN 702) from lead wire(CW 302, 5P) on the Front P. C. Board(d). 4. Disconnect the connector(CN 703) from lead wire(CW 802, 2P) on the Volume2 P. C. Board(a). 5. Disconnect the connector(CN 701) from lead wire(CW 501, 10P) on the Tone P. C. Board(c). 6. Disc

38、onnect the lead wire(CW 701,10P) from connector(CN 109) on the Main P. C. Board(i). 7. Full out the Volume Knob(1). 8. Remove 1 hexagon nut(3), 1 washer(4) and then remove the Volume P. C. Board(b). VOLUME2 P. C. BOARD(a) ASSY(AD) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous ste

39、p. 2. Remove the Front-panel ASSY(AA), referring to the previous step. 3. Disconnect the lead wire(CW 802, 2P) from connector(CN 703) on the Volume P.C.Board(b). 4. Full out the Volume Knob(1). VOLUME2 P. C. BOARD(a) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step. 2. Remove t

40、he Front-panel ASSY(AA), referring to the previous step. 3. Remove the Volume P. C. Board(b) ASSY(AD), referring to the previous step. 4. Full out the Volume2 P. C. Board(a). TONE P. C. BOARD(c) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step. 2. Remove the Front-panel ASSY(AA

41、), referring to the previous step. 3. Disconnect the lead wire(CW 501, 10P) from connector(CN 701) on the Volume P. C. Board(b). 4. Pull out the Balance-knob(5). 5. Remove 4 screws(J) and then remove the Tone P. C. Board ASSY(AC). 6. Remove 4 hexagon nut(3) and then remove the Shield-balance(12).5.

42、DISASSEMBLY PROCEDURESwww.freeservicemanuals.info9/9/2013World of free manuals PHONES P. C. BOARD(e) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step. 2. Remove the Front-panel ASSY(AA), referring to the previous step. 3. Disconnect the lead wire(CW 801, 3P) from connector(CN 4

43、01) on the Amp P. C. Board(h). 4. Remove 2 screws(E) and then remove the Phones P. C. Board(e). POWER P. C. BOARD(f) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step. 2. Remove the Front-panel ASSY(AA), referring to the previous step. 3. Disconnect the lead wire(CW 801, 5P) fro

44、m connector(CN 302) on the Front P. C. Board(d). 4. Remove 2 screws(J) and then remove the Power P. C. Board(f). STANDBY P. C. BOARD(g) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step. 2. Remove the Front-panel ASSY(AA), referring to the previous step. 3. Remove 2 screws(J) an

45、d then remove the Standby P. C. Board(g). TUNER P. C. BOARD(j) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step. 2. Remove 21 screws(G,K) and then remove the Chassis-back(41). 3. Pull out the Tuner P. C. Board(j). RADIATOR ASSY(AB) REMOVAL. 1. Remove the Chassis-top(44), referr

46、ing to the previous step. 2. Disconnect the connector(CN 401) from lead wire(CW 801, 3P) on the Phones P. C. Board(e). 3. Disconnect the lead wire(CW 403, 4P) from connector(CN 111, CN 112) on the Main P. C. Board(i). 4. Disconnect the lead wire(CW 402, 10P) from connector(CN 107) on the Main P. C.

47、Board(i). 5. Disconnect the lead wire(CW 401, 4P) from connector(CN 108) on the Main P. C. Board(i). 6. Remove 7 screws(I) and then pull out the Radiator AssY(AB). AMP P. C. BOARD(h) REMOVAL. 1. Remove the Chassis-top(44), referring th the previous step. 2. Remove the Radiator AssY(AB), referring to

48、 the Previous step. 3. Disconnect the connector(CN 402) from lead wire(posistor, 2P) on the Radiator-main (21). 4. Remove 4 screws(D) and then remove the Amp P. C. Board(h). POWER TRANS(38) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step. 2. Disconnect the lead wire(2P) from c

49、onnector(CN 103) on the Main P. C. Board(i). 3. Disconnect the lead wire(3P) from connector(CN 104) on the Main P. C. Board(i). 4. Disconnect the lead wire(6P) from connector(CN 105) on the Main P. C. Board(i). 5. Disconnect the lead wire(3P) from connector(CN 106) on the Main P. C. Board(i). 6. Rem

50、ove 4 screws(B) and then remove the Power trans(38). MAIN P. C. BOARD(i) REMOVAL. 1. Remove the Chassis-top(44), referring to the previous step. 2. Remove the Tuner P. C. Board(j), referring to the previous step. 3. Disconnect the connector(CN 109) from lead wire(CW 701, 10P) on the Volume P. C. Boa