HarmanKardon-HK3370-rec-sm1维修电路原理图.pdf

The Harman Kardon Model HK 3370 / HK 3470 Manual A STEREO RECEIVER CONTENTS TECHNICAL SPECIFICATIONS.3 ALIGNMENT PROCEDURES 5 CIRCUIT DESCRIPTION.8 BLOCK DIAGRAM.16 DISASSEMBLY PROCEDURES.17 EXPLODED VIEW.19 PRINCIPAL SCREW LOCATION.21 PARTS LIST.27 IC BLOCK DIAGRAM.63 PRINTED CIRCUIT BOARDS.71 SCHEMATIC DIAGRAMS .77 WIRING DIAGRAM82 PACKING MATERIAL83 harman/kardon Parts and Service Office 80 Crossways Park West, Woodbury, N.Y. 11797 Printed in Korea PowerPhones MuteSpeaker 1Speaker 2FMAMFM Mode Volume Bass MinMax TrebleBalance PhonoT- MonTapeCDAuxDimmerSleep PresetTuningPreset Scan MinMaxLR RadioFans.CN F RONT AMP SECTION Continuous Power Output (STEREO MODE), Input: CD THD: 0.08%, 8ohms Both Channel Driven (20Hz - 20KHz) (STEREO MODE) THD: 0.2%, 4ohms, Input: CD Both Channel Driven (20Hz - 20KHz) THD at 65W, 8ohms, Input: CD 2 0 H z 1 K H z 2 0 K H z IM Distortion at 50W, 8ohms, Input Sensitivity for Rated Power Output Tape Monitor/CD/AUX/TAPE2 P h o n o S/N Ratio Input Shorted at 1KHz 70W Output ( WTD IHF-A) C D Tone Control Bass: 100Hz Treble: Frequency Response at -3dB Mode: Stereo, Ref: 1KHz, 10Hz-120KHz 15Hz-100KHz Channel Crosstalk Input Shorted by 1Kohms 1 0 0 H z 1 K H z 1 0 K H z N o m i n a l 7 0 W 9 5 W 0 . 0 5 % 0 . 0 5 % 0 . 0 5 % 0 . 0 5 % ( 7 0 W ) 2 0 0 m V 2 . 5 m V 1 0 0 d B + 1 0 d B - 1 0 d B + 1 0 d B - 1 0 d B 7 0 d B 7 0 d B 5 0 d B L i m i t 6 5 W 9 0 W 0 . 0 8 % 0 . 0 8 % 0 . 0 8 % 0 . 0 8 % 1 5 0 - 2 5 0 m V 2 . 2 - 2 . 8 m V 9 5 d B + 1 02 d B - 1 02 d B + 1 02 d B - 1 02 d B 6 0 d B 6 0 d B 4 2 d B G E N E R A L Power Consumption At Rated Power All Channel Driven Idling at Minimum Volume Control Power Supplies Dimensions (WHD ) i n c h e s m m Weight (lbs/kgs) 4 3 6 W 7 2 W AC 120V, 60Hz 1 7 . 46 . 11 6 . 3 4 4 21 5 64 1 5 2 4 . 6 / 1 1 . 2 FM SECTION Tuning Cover Range: 100KHz Step Mono Usable Sensitivity (75ohms Input,98MHz) Image Rejection (at 98MHz) IF Rejection (at 98MHz) 50dB Quieting SEnsitivity (at 98MHz, 100% MOD.) IHF Band Pass Filter S t e r e o Distortion (1KHz, 100% MOD. at 98MHz, 65dbf Input) IHF Band Pass Filter M o n o S/N Ratio (500 Input, 100% MOD. at 98MHz) IHF Band Pass Filter S t e r e o Frequency Response (-3dB) De-Emphases: 75 AM suppression at 98MHz Muting threshold (at 98MHz) Overload Distortion at 98MHz Capture Ratio at 65dbf Stereo Separation (at 98MHz, 100% MOD.,500 I n p u t ) IHF Band Pass Filter 1 K H z Tape out Level (at 98MHz) N o m i n a l 87.50 - 108.00MHz 1 2 . 2 d b f 4 0 d B 8 0 d B 4 1 . 2 d b f 0 . 3 % 6 5 d B 20Hz - 15KHz 5 2 d B 3 5 . 2 d b f 0 . 3 % 1 . 5 d B 4 0 d B 5 0 m V L i m i t 1 7 . 3 d b f 3 5 W 7 0 W 4 7 . 3 d b f 0 . 5 % 6 0 d B 40Hz - 14KHz 4 7 d B 31.2 - 39.2dbf 1 % 2 . 5 d B 3 0 d B 350 - 650mV AM SECTION Tuning Cover Range: 10KHz Step Usable Sensitivity 9 9 9 / 9 9 0 K H z Image Rejection (at 999KHz) AGC Figure of Merit (From 100mV/m at 999/1000KHz) Distortion (999/1000Hz, 30% MOD. 50mV/m Input) Frequency Response (999/1000KHz) at -6dB Selectivity (at 999/1000Hz) 9KHz / 10KHz S/N Ratio (999/k1000KHz, WithAntenna Input 50mV/m) Overload Distortion at 98MHz Tape out Level at 999/1000KH (5mV/m Input) N o m i n a l 520 - 1710MHz 5 0 0/ m 3 5 d B 5 5 d B 1 . 0 % 80Hz - 2.3KHz 2 5 d B 4 0 d B 1 % L i m i t 1 0 0 0/ m 3 0 d B 5 0 d B 1 . 5 % 100Hz - 2KHz 2 0 d B 3 5 d B 1 . 5 % RadioFans.CN HK3370 3 1. Technical Specification F RONT AMP SECTION Continuous Power Output (STEREO MODE), Input: CD THD: 0.08%, 8ohms Both Channel Driven (20Hz - 20KHz) (STEREO MODE) THD: 0.2%, 4ohms, Input: CD Both Channel Driven (20Hz - 20KHz) THD at 65W, 8ohms, Input: CD 2 0 H z 1 K H z 2 0 K H z IM Distortion at 75W, 8ohms, Input Sensitivity for Rated Power Output Tape Monitor/CD/AUX/TAPE2 P h o n o S/N Ratio Input Shorted at 1KHz 100W Output ( WTD IHF-A) C D Tone Control Bass: 100Hz Treble: Frequency Response at -3dB Mode: Stereo, Ref: 1KHz, 10Hz-120KHz 15Hz-100KHz Channel Crosstalk Input Shorted by 1Kohms 1 0 0 H z 1 K H z 1 0 K H z N o m i n a l 1 0 0 W 1 3 0 W 0 . 0 5 % 0 . 0 5 % 0 . 0 5 % 0 . 0 5 % ( 1 0 0 W ) 2 0 0 m V 2 . 5 m V 1 0 0 d B + 1 0 d B - 1 0 d B + 1 0 d B - 1 0 d B 7 0 d B 7 0 d B 5 0 d B L i m i t 8 5 W 1 2 0 W 0 . 0 8 % 0 . 0 8 % 0 . 0 8 % 0 . 0 8 % 1 5 0 - 2 5 0 m V 2 . 2 - 2 . 8 m V 9 5 d B + 1 02 d B - 1 02 d B + 1 02 d B - 1 02 d B 6 0 d B 6 0 d B 4 2 d B G E N E R A L Power Consumption At Rated Power All Channel Driven Idling at Minimum Volume Control Power Supplies Dimensions (WHD ) i n c h e s m m Weight (lbs/kgs) 5 7 5 W 7 2 W AC 120V, 60Hz 1 7 . 46 . 11 6 . 3 4 4 21 5 64 1 5 2 4 . 6 / 1 1 . 2 FM SECTION Tuning Cover Range: 100KHz Step Mono Usable Sensitivity (75ohms Input,98MHz) Image Rejection (at 98MHz) IF Rejection (at 98MHz) 50dB Quieting SEnsitivity (at 98MHz, 100% MOD.) IHF Band Pass Filter S t e r e o Distortion (1KHz, 100% MOD. at 98MHz, 65dbf Input) IHF Band Pass Filter M o n o S/N Ratio (500 Input, 100% MOD. at 98MHz) IHF Band Pass Filter S t e r e o Frequency Response (-3dB) De-Emphases: 75 AM suppression at 98MHz Muting threshold (at 98MHz) Overload Distortion at 98MHz Capture Ratio at 65dbf Stereo Separation (at 98MHz, 100% MOD.,500 I n p u t ) IHF Band Pass Filter 1 K H z Tape out Level (at 98MHz) N o m i n a l 87.50 - 108.00MHz 1 2 . 2 d b f 4 0 d B 8 0 d B 4 1 . 2 d b f 0 . 3 % 6 5 d B 20Hz - 15KHz 5 2 d B 3 5 . 2 d b f 0 . 3 % 1 . 5 d B 4 0 d B 5 0 m V L i m i t 1 7 . 3 d b f 3 5 W 7 0 W 4 7 . 3 d b f 0 . 5 % 6 0 d B 40Hz - 14KHz 4 7 d B 31.2 - 39.2dbf 1 % 2 . 5 d B 3 0 d B 350 - 650mV AM SECTION Tuning Cover Range: 10KHz Step Usable Sensitivity 9 9 9 / 9 9 0 K H z Image Rejection (at 999KHz) AGC Figure of Merit (From 100mV/m at 999/1000KHz) Distortion (999/1000Hz, 30% MOD. 50mV/m Input) Frequency Response (999/1000KHz) at -6dB Selectivity (at 999/1000Hz) 9KHz / 10KHz S/N Ratio (999/k1000KHz, WithAntenna Input 50mV/m) Overload Distortion at 98MHz Tape out Level at 999/1000KH (5mV/m Input) N o m i n a l 520 - 1710MHz 5 0 0/ m 3 5 d B 5 5 d B 1 . 0 % 80Hz - 2.3KHz 2 5 d B 4 0 d B 1 % L i m i t 1 0 0 0/ m 3 0 d B 5 0 d B 1 . 5 % 100Hz - 2KHz 2 0 d B 3 5 d B 1 . 5 % RadioFans.CN HK3470 4 1. 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 Counter ?Stereo Modulator Note: Disconnect external FM antenna prior to alignment 2. Alignment and Test Points 3. AM IF and RF Alingment Preparation 1. 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. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? !?#? ? ? ? ? $? ?$?%?: HK3370 / HK3470 6 5. MPX Alignment, SM Alignment Preparation 1. Switch: Press to FM 2. Tuner for 98MHz on band. 3. Signal 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?/?(#.?4?# ?0?#? ? !.?:?8?.?/.? ?2?.? HK3370 / HK3470 7 3. Circuit Description CPU(IC401) :uPD780204GF 1. Pin Configuration HK3370 / HK3470 8 2. Pin Description Pin No.Pin NameI/OACTIVEPORT NAMEREMARK 1Vdd-H+5VSystem power supply 2P37IHKR4Key read 4 3P36IHKR3Key read 3 4P35IHKR2Key read 2 5P34IHKR1Key read 1 6P33-Not used 7P32-Not used 8P31OH/LPWR_LED(RED)L:AMBER L:GREEN H:RED 9P30OH/LPWR_LED(GRN)L:STBY H:OPER L:PROT 10RESETILSystem resetLow reset 11X2-OSCMain system osc. 12X1I-OSC- 13Vpp-Conneced to Vss 14XT2-Not used 15P04/XT1IH/LOPT_RDSRds on/off 16Vdd-H+5VSystem power supply 17P27-Not used 18P26-Not used 19P25ILPWR DOWNDetect power off 20P24OHPWR_RLYPower Relay on/off 21P23OHVR_UPVolume up 22P22OHVR_DOWNVolume Down 23P21ILPROTECTDetect protection 24P20OHPWR_MUTEPower Mute 25AVss-LGNDAnalog ground 26P17OHPRE_MUTEPre mute 27P16OHTUNER_MUTETuner mute 28P15IH/LIF_INIF conter in 29P15OHPLL CE 30P13OHPLL CLOCK 31P12OH/LPLL DATA 32P11ILTUNEDTuned in on : L 33P10ILSTEREOStereo in on : L 34Avdd-H+5VAnalog power supply 35Avref-LGND 36P03-Not used 37INTP2ILRDS CLKRds clock in 38P01IHRDS DATA Rds data in 39P00ILREMOCON INRemocon data in 40Vss-LGNDGround 41P74OH/L78211 CLK 42P73OH/L78211 CE 43P72-Not used 44P71-Not used 45P70-Not used 46 Vdd - H +5V uPD780204GF QFP Type HK3370 / HK3470 9 Pin No.Pin NameI/OACTIVEPORT NAMEREMARK 47P127-Not used 48P127-Not used 49P125-Not used 50P124OH/L78211 DATA 51P123-Not used 52P122-Not used 53P121-Not used 54P120-Not used 55P117OHVMAXVMAx on/off 56P116OHSPK1_RLYSpeaker1 relay on/off 57P115OHSPK2_RLYSpeaker2 relay on/off 58P114OHSPK1_LEDSpeaker1 led on/off 59P113OHSPK2_LEDSpeaker2 led on/off 60P112OHSPK12_LEDSpeaker1/2 led on/off 61P111- 62P110- 63P107OHVR_LEDVolume led on/off 64P106IH/LOPT_STEPL:E.U. , H:USA 65P105IH/LOPT_3400/3700L:3400, H:3370 66FIP33OHS18FIP segment output 67FIP32OHS17FIP segment output 68FIP31OHS16FIP segment output 69FIP30OHS15FIP segment output 70FIP29OHS14FIP segment output 71FIP28OHS13FIP segment output 72FIP27OHS12FIP segment output 73FIP26OHS11FIP segment output 74FIP25OHS10FIP segment output 75FIP24OHS9FIP segment output 76FIP23OHS8FIP segment output 77FIP22OHS7FIP segment output 78FIP21OHS6FIP segment output 79Vload-VloadFIP DRIVER VOLTAGE 80FIP20OHS5FIP segment output 81FIP19OHS4FIP segment output 82FIP18OHS3FIP segment output 83FIP17OHS2FIP segment output 84FIP16OHS1FIP segment output 85FIP15OHG16FIP grid output 86FIP14OHG15FIP grid output 87FIP13OHG14FIP grid output 88FIP12OHG13FIP grid output 89FIP11OHG12FIP grid output 90FIP10OHG11FIP grid output 91FIP9OHG10FIP grid output 92FIP8OHG9FIP grid output 93FIP7OHG8FIP grid output 94FIP6OHG7FIP grid output 95FIP5OHG6FIP grid output HK3370 / HK3470 10 Pin No.Pin NameI/OACTIVEPORT NAMEREMARK 96FIP4OHG5FIP grid output 97FIP3OHG4FIP grid output 98FIP3OHG3FIP grid output 99FIP1OHG2FIP grid output 100FIP0OHG1FIP grid output 1 2 3 4 5 6 PLL MODE 1 PLL MODE 2 PLL MODE 3 PLL MODE 2 PLL MODE 3 PLL MODE 1 ? ? ? ? 562314 ? A dotted line (.) : In case that IF COUNT is not proper, follow PLL MODE of 56 When changing BAND, selecting the PRESET STATION using TEN KEY and selecting the PRESET STATION using PRESET CHANNEL UP/DOWN When IF COUNT is not proper in case that the frequency is not tuned ? ? ? ? 1231456 ? ? 4 3. Timing Chart (IF Count) HK3370 / HK3470 11 ? ? ? ? 1 11111 ? ? MANUAL TUNING UP/DOWN ? MANUAL TUNING UP/DOWN KEY OFF ? ? ? ? 1231456 ? ? ? HK3370 / HK3470 12 ? ? ? ? 1231456 ? ? ? ? ? ? ? 123131 ? ? 12231456 ? ? ? ? ? ? - AUTO TUNING UP/DOWN - POWER ON HK3370 / HK3470 13 4. Pheriperal IC Operation 1) FUNCTION IC. : LC7821-1/3 ? ? ? ? ? HK3370 / HK3470 14 4 2) PLL IC. (LC7218) ? ? 2) MODE 2 : FREQUENCY OUT/ OUTPUT CONTROL 3) MODE 3 : IF COUNT READ ? 1) MODE 1 : FREQUENCY OUT/ TUNED CHECK ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? HK3370 / HK3470 15 4. BLOCK DIAGRAM HK3370 / HK3470 16 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. 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 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. Board(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(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). 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 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. Disco