HARMAN-KARDON - Model 230E - AM-FM Stereo Receiver - Service Manual 电路图 维修手册.pdf

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1、The Harman/Kardon Model230e AM/FM/FM Stereo Solid State Receiver harman/kardon RadioFans.CN 收音机爱 好者资料库 TECHNICAL SPECIFICATIONS Amplifier-Section Power Output: 15 watts min. RMS per channel, both channels driven into 8 ohms from 20Hz to 20kHz, with less than 0.5% THD. Power Bandwidth: From 10Hz to 6

2、0Hz at less than 1% THD into 8 ohms, both channels driven simultaneously at 7.5 watts per channel. Frequency Response: From 5Hz to 80kHz. - 3dB at less than 0.5% THD. Square Wave Rise Time: Better than 5 microseconds. Square Wave Tilt: Less than 5% at 20Hz full output. Total Harmonic Distortion: Les

3、s than 0.5% from 250 milliwatts, to 15 watts RMS, both channels driven simultaneously into 8 ohms from 20Hz to 20kHz. lntermodulation Distortion: Less than 0.2% at rated power output. System Hum and Noise: Better than 60dB below rated output (unweighted). Damping Factor: 30. Input Sensitivity: Phono

4、: 3mV. Aux: 200mV. Input Impedance: Phono: 47,000 ohms. Aux: 20,000 ohms. Overload: Phono: 70mV at 1kHz. Aux: Related to volume control setting. RIAA Equalization: 1dB. Tuner Section FM Sensitivity: 5 microvolts, I HF Capture Ratio: 3dB. Image Rejection: 40dB. Alternate Channel Selectivity: 40dB. Mu

5、ltiplex Separation: 25dB at 1kHz. Dimensions: 16W x 14D x 4-1/4H. (406mm x 356mm x 108mm). Weight: 14 lbs (6.4kg). -2- PRECAUTIONS 1. Always disconnect the chassis from power line when soldering. Turning the power switch OFF is not enough. Power line leakage passing through the heating element may d

6、estroy the transistors. 2. Never attempt to do any work on the transistor amplifiers without first disconnecting the AC line cord and waiting until the power supply filter capacitors have discharged. 3. Replacement for output and driver transistors, if necessary, must be made from the same beta grou

7、p as the original type. 4. If one output transistor burns out (open or short) always remove all the output transistors in that channel and check the bias adjustment, the control and other parts in the network with an ohmmeter before inserting a new transistor. All transistors in one channel will be

8、destroyed if the base biasing circuit is open on the emitter end. 5. When mounting a replacement power transistor, be sure that the bottom of the flange, the mica insulators and the surface of the heat sink are free of foreign matter, for they may cause transistor failure. 6. Silicon grease must be

9、applied between the transistor and the mica insulator, and between the mica insulator and the heat sink for better heat conduction. 7. Fuses must be replaced with size and type indicated. Use of other types can expose components to destructive current levels. 8. Use a non-conductive, non-ferrous too

10、l when making alignment adjustments. Perform all specifications tests with all covers and escutcheon in place. The Harmon Kardon model 230e stereo receiver was manufactured in two versions. The earlier units did not feature a lighted dial scale, stereo indicator or balance control as do the later un

11、its. This manual, which includes both versions, primarily covers the later units. The earlier version difference data is covered in the rear section of this manual. -3- ALIGNMENT PROCEDURES AM ALIGNMENT PROCEDURE INSTRUMENTS: AM Signal Generator modulated with 400Hz at 30%. NOTE: AM IF Sweep Generat

12、or and Oscilloscope. VTVM. Depress the AM Pushbutton (Button IN). Connect signal source to a placed to radiate signal into AM Antenna Loop Stick (L 1). CONNECT OUTPUT Step SIGNAL SOURCE METER TO DIAL SETTING ADJUST 1 455kHz of AM IF Sweep VTVM and Oscilloscope to Generator R135 2 540kHz of AM Same a

13、s above Signal Generator 3 1600kHz of AM Same as above Signal Generator 4 Repeat Steps 2 and 3 for best dial accuracy 5 600kHz of AM Same as above Signal Generator 6 1600kHz of AM Same as above Signal Generator 7 Repeat Steps 5 and 6 for best sensitivity MPX ALIGNMENT PROCEDURE INSTRUMENT: Frequency

14、 Counter. NOTE: Depress the FM Pushbutton (Button IN). CONNECT OUTPUT METER TO Frequency Counter to R151 STEREO THRESHOLD ALIGNMENT PROCEDURE INSTRUMENTS: FM Stereo Signal Generator. NOTE: Depress the FM Pushbutton (Button IN). Quiet point on band 540kHz 1600kHz 600kHz 1600kHz DIAL SETTING Quiet Poi

15、nt Connect signal source to FM Antenna Terminal. T103 L106 TC5 L1 TC4 ADJUST VR102 Set Main signal ON and Pilot signal (10%) ON of FM Stereo Signal Generator. Set VR103 fully counter-clockwise. ADJUST FOR 19kHz 100Hz Step SIGNAL SOURCE DIAL SETTING ADJUST ADJUST FOR ADJUST FOR Maximum and top flat p

16、attern on Oscilloscope Maximum output Same as above Same as above Same as above 1 98MHz 22.5M V (27dB) 98MHz VR103 Turn VR103 clockwise until FM Stereo Indicator (01) just goes OFF 2 To raise the signal source by 1dB and confirm that FM Stereo Indicator (01) lights at this position -4 ALIGNMENT PROC

17、EDURES FM ALIGNMENT PROCEDURE INSTRUMENTS: FM Signal Generator modulated with 400Hz at 75kHz. Step 1 2 3 4 5 6 7 8 9 10 FM IF Sweep Generator and Oscilloscope. Distortion Meter. VTVM. NOTE: Depress the FM Pushbutton (Button IN). CONNECT SIGNAL CONNECT OUTPUT SIGNAL SOURCE SOURCE TO METER TO 10,7MHz

18、of FM IF L103 Oscilloscope to cathode Sweep Generator of D102 Same as above Same as above Oscilloscope to LP119 98MHz 1mV (60dB) FM Antenna Distortion Meter to of FM Signal Generator Terminal Tape Output Jack Repeat Steps 1 through 3 until no further improvement is noticed 88MHz 5!N(14dB) of Same as

19、 above VTVM and FM Signal Generator Oscilloscope to Tape Output Jack 108MHz 5oV(14dB) of Same as above Same as above FM Signal Generator Repeat Steps 5 and 6 for best dial accuracy 90MHz 5oV(14dB) of Same as above Same as above FM Signal Generator 106MHz 5oV(14dB) of Same as above Same as above FM S

20、ignal Generator Repeat Steps 8 and 9 for best sensitivity DIAL CORD STRINGING DIAL SETTING Quiet Point on band Same as above Same as above 88MHz 108M Hz 90MHz 106M Hz ADJUST ADJUST FOR T101 top Maximum and undistorted and bottom pattern on Oscilloscope T102 top Maximum and balanced S curve on Oscill

21、oscope T102 bottom Minimum output on Distortion Meter L104 Maximum output TC3 Same as above L101 Same as above L102 TC1 Same as above TC2 e- -1500- Start stringing with Variable Capacitor in closed position. -5- ALIGNMENT POINTS TOP VIEW BOTTOM VIEW -6- VR102 -R151 !-R135 ._ _ _ LP119 -0102 L-VR103

22、e-T102 T102BOTTOM T101 BOTTOM WIRING DIAGRAM- MODEL 230e REGULAR VOLTAGE TEl FM/AM ANT TERMINAL TE4 -7- ll AM ANT MAIN AMP/RECTIFIER CB2 SPEAKER PROTECTOR (R) T1 POWER -8- Pl SW6 POWER WIRING DIAGRAM- MODEL 230e REGULAR VOLT AGE TE1 FM/AM ANT TERMINAL TE4 -7- 01 L.E.Q. STEREO TOR CB1 SPEAKER PROTECT

23、OR L) LQ. . . ._ _ - -. -LA_M _P- H-0-LD_IE_R_.- P-; C-:._S_O_ . (!i_i!_D_ . . _ _- - -. _ . .;_;_;.;_;_;.;c.; :-. . , :.-: , : p WHITE B AC RPLE CB2 SPEAKER PROTECTOR (R) CK BLACK TE3 SPEAKER SYSTEM (G) WHITE T1 POWER BLUE BLUE GREEN BLACK GRAY RE RAY BLACK GREEN GRAY WHITE a - a: RED BLACK -8- P1

24、WHITE SW6 POWER _, GR Y SCHEMATIC NOTES AND VOLTAGES SCHEMATIC DIAGRAM NOTES 1. All resistors are 1/4 watt, 5%, unless noted otherwise. Values are in ohms, K=1000 M=1000K 2. All capacitances values are in MF unless noted otherwise. PF=MMF 3. Function Selector switch (SW1-4) is in FM (SW3) position.

25、VOLT AGE CHART AC 120V, Volume Control at Minimum, Tone Control at Mechanical Center, No Signal, Chassis Ground. +B1 +26.6V +82 , +13.6V +83 +13.7V +84 +12.2V -81 -26.6V -82 -13.6V -83 -13.7V FM POSITION base emitter collector 0101 + 1.46V + 0.75V +10.6V 0102 + 2.73V + 2.02V +11.4V 0103 + 3.32V + 2.

26、64V +10.7V 0105 + 1.2V + 0,63V + 0.65V 0106,107 + 9.6V +10.3V + 5,9V 0201,202 + 0.02V + 0,6V - 9.8V 0203,204 - 9.8V -10.4V + 0.4V 0301,302 - 0.03V - 0.6V +13.1 v 0303,304 +13.1 v +13.8V - 1.6V 0305,306 - 0.05V - 0.6V +25.4V 0307,308 - 0.04V - 0,6V +26.3V 0309,310 -24.9V -25.6V -18.8V 0311,312 +25.4V

27、 +26.1V + 1.2V 0313,314 -25.6V -26.2V - 0.7V 0315,316 -0.01V - 0.7V + 1.2V 0317,318 + 1.2V + 0.6V + 27V 0319,320 - 0.7V - 0,2V -26.3V 0321,322 + 0.06V + 0.03V +27V 0323,324 -26.3V -26.8V - 0,01V 0401 +12.8V +12.2V +19.3V 0402 - 0.56V OV - o.oav AM POSITION 0104 + 2.35V + 1.71V + 7.5V -15- IC101 FM A

28、M 1. 4.2V 4.9V 2. 4.1V 5.1V 3, 4.1V 4.9V 4. 6.6V 6.6V 5, ov ov 6. 4.5V 4.7V 7. 4.6V 4,7V 8, 6.4V 6.7V 9. 0.02V 0.02V 10. 7.4V 7.7V 11. 0.5V 0.95V 12. 0.006V 0.005V 13. 5.1V 4.3V 14. 0,7V 1.4V 15, o.oav 6.7V 16. o.oav 1.0V 17. 0.75V 0.75V 18. ov OV IC102 FM 1. 11.5V 2. 3.1V 3. 5.9V 4. 9,6V 5. 9.6V 6.

29、 - 7. ov 8. 0.7V 9. 2.4V 10. 1.6V 11, 2.3V 12, 2.4V 13. 2.4V 14. 3.3V TUNER PC BOARD CIRCUIT REF NO. H/K PART NO. DESCRIPTION 00135023A PC BD Assy Tuner RESISTOR R148 35211633 Fixed, Metal 16K, 1%, 1/4W VR102 23530554 Variable 4.7K VR103 23534830A Variable 10K CAPACITOR VC1,2,3,4,5 30834831A 5 Gang

30、Variable w/TC1 ,2,4,5, TC3 30934832A Variable, Trimmer CERAMIC FILTER CF1,2 12030549 FM IF, 10.7MHz T103 12034833A AM IF, 455KHz TRANSISTOR 0101 1 02,103 43034834A* 2SC535(B) FM RF Amp, FM Mixer, FM Osc. 0104,105 43030569* 2SC1335(E) AM Demod Sig Amp, Stereo/Mono-Switching 0106,107 43031312* 2SA844(

31、E) MPX Output AMP DIODE 0101,102,103 41034873A* IN60 0104 41030552* 1S2076 INTEGRATED CIRCUIT IC101 43134835A* HA11123 FM IF AMP/ FM DET/AM Converter/ AM IF AMP IC102 43132131* HA1156W MPX COIL l101 12034836A Matching L102 12034837A FM RF L103 12034838A IF Trap L104 12034839A FM OSC L105 12034840A P

32、hase Shifter, 1811H L106 12031316 AM OSC TRANSFORMER T101 11034841 A FM IF T102 11034842A Quadrature Detector T104 11034843A AM IF -16- TUNER PC BOARD REGULAR VOLTAGE MULTI-VOLTAGE -17- MAIN AMP RECTIFIER PC BOARD Cl RCUIT REF NO. RESISTOR R359,360 R367 ,368,369,370 R375,376 R402 VR1,2 VR3,4 CAPACIT

33、OR, LYTIC C401 C402 C403 C409,410 C415 C416 TRANSISTOR 0301,302 0303,304 0305,306,307,308 0309,310 0311,312 0313,314 0315,316 0317,318 0319,320 0321,322,323,324 0401 0402 DIODE D301 ,302,303,304, 305,306 D307,308 D309,31 0,401 ,402, 403,404,405,409, 410 D406 D407,408 MISCELLANEOUS L301,302 FU1 FU2,3

34、 FU4 SW5 MULTI-VOLTAGE FU1 FU2,3 FU4 H/K PART NO. 00135022A 33211005 33514781 33512201 35211005 23535032A 23534846A 31828610 31828611 31828613 31834952A 31831322 31819155 43033345* 43031312* 43034872A* 43034872A* 43034847A* 43034848A* 43034968A* 43034849A* 43034850A* 43032753* 43032759* 43031312* 41

35、030552* 41631340* 41631295* 42032760* 42032757* 12034851A 45034852A* 45031462* 45032129* 25034853A 45234870* 45234420V* 45234420T* -18- DESCRIPTION PC BD Assy Main Amp/Rectifier Fixed, Fuse 10 ohm, 1/4W Fixed, Wirewound, Cement 0.47 ohm, 2W Fixed, Wirewound, Cement 22 ohm, 2W Fixed, Metal 10 ohm, 5%

36、, 1/4W Variable, 100K, Volume & Balance Control Variable, 100K, Bass & Treble Control 1000 UF +50-10% 16V 470 UF +50-10% 16V 100 UF +50-10% 25V 5600 UF +50-10% 35V 22 UF +50-10% 10V 47 UF +50-10% 10V 2SC1345(E) Pre Amp 2SA844(E) Pre Amp 2SC1345( F) Differential Amp 2SC1345(F) Current Regulator 2SB64

37、6(C) Driver 2SD666(C) Current Regulator 2SC458(B) Bias Stabilization 2SD667(C) Complement 2SB647(C) Complement 2SD476A(B) Power Amp 2SD414(0) or (R) Voltage Rectifier 2SA844(E) Muting 1S2076 MV12Y SIB01-02 Zener, RD13EB Zener, RD15EB RF Choke Fuse, 0.4A, 250V Fuse, 4A, 250V Fuse, 2A, 250V Switch, Pu

38、sh, Contour Fuse, Slo-Bio, 250mA , 250V Fuse, Slo-Bio, 2.5AT, 250V Fuse, Slo-Bio, 1.6AT, 250V MAIN AMP RECTIFIER PC BOARD REGULAR VOLTAGE 0 MULTI-VOLTAGE 0 0 0 -1 9- EQUALIZER AMP PC BOARD CIRCUIT REF NO. H/K PART NO. DESCRIPTION 00135024A PC BD Assy Equalizer Amp TRANSISTOR 0201,202 43031312* 2SA84

39、4(E) Equalizer Amp 0203,204 43028535* 2SC1344(E) Equalizer Amp SWITCH SW1,2,3,4 25034844A Push, 4 Gang, Aux, AM, FM, Phono -20- LAMPHOLDER PC BOARD CIRCUIT REF NO. PL1 ,2,3,4 HEADPHONE JACK PC BOARD CIRCUIT REF NO. J1 H/K PART NO. 00135027A 46535026A* 66035035A J1 HEAD PHONE H/K PART NO. 00135057A 6

40、5434854A -21- DESCRIPTION PC BD Assy Lamp Holder Lamp, 7V, 260mA Lamp Holder (X8) DESCRIPTION PC BD Assy, Headphone Jack Headphone Jack ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

41、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 10134821 RV?XFMR 5584-701178, 5584-703178 -23- (EARLY VERSION)- MODEL 230e WIRING DIAGRAM- REGULAR VOLTAGE TE1 FM/AM ANT TERMINAL TE4 -25- L1 AM ANT CB2 SPEAKER PROTE

42、CTOR (R) T1 POWER -26- P1 SW6 POWER CB2 SPEAKER PROTECTOR (R) T1 POWER -26 - P1 SW6 POWER (EARLY VERSION)- MODEL 230e WIRING DIAGRAM- MULTI-VOLTAGE TEl FM/AM ANT TERMINAL TE4 -27- L1 AM ANT CB2 SPEAKER PROTECTOR (R) T1 POWER -28- P1 SW6 POWER (EARLY VERSION)- MODEL 230e WIRING DIAGRAM- MULTI-VOLTAGE

43、 TEl FM/AM ANT TERMINAL TE4 -27- CE SPEt PROT! (l CB2 SPEAKER PROTECTOR (R) T1 POWER -28- P1 SW6 POWER ? ? ? ? ? -30- (EARLY VERSION)- MODEL 230e SCHEMATIC DIAGRAM- MULTI-VOLTAGE -31- -32- (EARLY VERSION)- MODEL 230e SCHEMATIC DIAGRAM- MULTI-VOLTAGE -31- -32- (EARLY VERSION)- MODEL 230e -33- -34- ? ? ? ? ? ? ? ?