Kenwood-GEQ300-eq-sm 维修电路原理图.pdf

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1、GRAPHIC EQUALIZERG-EQ300SERVICE MANUAL 1997-9/B51-5354-00 (K/K) 3669TAPEON/STANDBYEQ.EFFECTGRAPHIC/PARAMETRICMAIN POWERTAPEDISPLAY REVERSEFLAT MANU./REF.PAUSEPATTERN123F1F2F345MEMORYPOP./1ROCK/2JAZZ/3BYPASSCARH.P.ST.FUSION/4CLASSIC/5MOVIEWIDE/NARROWEQ.LEVELFREQUENCY JOG-ON OFFLINEINOUTRLRLTAPEPLAYIN

2、RECOUTSYSTEM CONTROLAC OUTLETFront panel (A60-1354-08)Dressing panel(A21-3601-03)Display window(B10-2444-08)Level button(K29-6911-08)Top cabinet(A01-3548-08)Receptacle power socket *(E03-)D3.5 jack(E63-0186-08)x2D3.5 jack(E11-0188-05)Nylon stopper(J42-0200-08)AC power cord *(E30-)Power button(K29-69

3、16-08)Power button(K29-6910-08)Tape button(K29-6914-08)Function button(K29-6912-08)Frequency button(k29-6913-08)Shuttle knob(K29-6915-08)* Refer to parts list on page 16.G-EQ300 1P.INT(CIR 97.11.27 8:19 PM yW 1RadioFans.CN 收音机爱 好者资料库G-EQ3002CONTENTS / ACCESSORIESCONTENTS / ACCESSORIES . 2CONTROLS .3

4、PC BOARD . 5SCHEMATIC DIAGRAM . 9EXPLODED VIEW .15PARTS LIST.16SPECIFICATIONS .Back coverContentsOperation to resetThe microprocessor may fall into malfunction (impossibility tooperate erroneous display, etc.) when the power cord isunplugged while power is ON or due to an external factor. Inthis cas

5、e, execute the following procedure to reset the microprocessor and return it to normal condition.What appears to be a malfunction may not always be serious. If your unit should not perform as expected, consult the tablebelow to see if the problem can be corrected before seeking help from your dealer

6、 or service representative.In case of difficulty Please note that resetting the microprocessorclears the contents stored in, it returns the microprocessor to the condition when it left the factory.While holding the MEMORY key depressed,press the MAIN POWER switch to on.Audio cord (2)(E30-2841-08)Sys

7、tem control cord (1)(E30-2733-05)AC plug adaptor(1)(E40-9981-08)AccessoriesG-EQ300 1P.INT(CIR 97.11.27 8:19 PM yW 2RadioFans.CN 收音机爱 好者资料库G-EQ300STANDBY indicatorWhile standby mode is indicated, a small amount of power is supplied to the system to back up the memory . In this mode, the system can be

8、 turned ON by remote control.3CONTROLSTAPEON/STANDBYEQ.EFFECTGRAPHIC/PARAMETRICMAIN POWERTAPEDISPLAY REVERSEFLAT MANU./REF.PAUSEPATTERN123F1F2F345MEMORYPOP./1ROCK/2JAZZ/3BYPASSCARH.P.ST.FUSION/4CLASSIC/5MOVIEWIDE/NARROWEQ.LEVELFREQUENCY JOG3214 56879 0! # $ % &*()2.5k3.9k6.3k10k16 k4006251k1.5k25040

9、6398160EQ. ONMANUALREFERENCEGRAPHICPARAMETRICF1F2F3NARROWWIDE?* * * * * *MEMORY-ON OFFNames and functions of parts1 MAIN POWER keySwitch the unit ON mode.2 ON/STANDBY keySwitch the unit between ON mode andSTANDBY mode.3 Standby indicatorLights up to indicate that a small amountof current flows in th

10、e unit.4 PATTERN key Press to enter or quit the genre mode.5 TAPE indicator Lights up when the TAPE key is pressedto ON.6 PAUSE keyPress to let an equalizer curve pausetemporarily.7 WIDE/NARROW keyEach press of the key switches the curveslope alternately between WIDE andNARROW.8 GRAPHIC/PARAMETRIC k

11、eyGRAPHIC: Select this mode when adjusting an equalizer curve.PARAMETRIC: Select this mode whencreating an equalizer curve according tocenter frequencies.90EQ. LEVEL (UP)/ (DOWN) keysPress the (up) or (down) key to increaseor decrease the equalizer level.! EQ. EFFECT keyPress to turn the equalizer m

12、ode ON andOFF. TAPE keyUse when playing back or recording atape.# DISPLAY keyPress to switch the display mode or toselect the demonstration mode.$ REVERSE keyPress to reverse an equalizer curve.% FLAT keyPress to make an equalizer curve flat. MANU./REF. keyPress to switch the manual and referencefun

13、ctions alternately. & Preset keys (1 to 5)Typical equalizer patterns have beenpreset under these keys so that you canselect any one of them easily.* MEMORY keyPress this key when registering a user-created equalizer pattern.( Genre keysPress in the genre mode to select thedesired music genres and th

14、eir equalizerpatterns.) Frequency keys (F1, F2, F3)Each key can store a desired centerfrequency. FREQUENCY JOG knobRotate the control knob to adjust the frequency band (range).IndicatorsEQ. ONGRAPHICMEMORYPARAMETRICMANUALF1, F2, F3REFERENCEWIDE/NARROWGraphic equalizer displaySpectrum analyzer displa

15、yCharacter displayCharacter displayFrequency displayindicatorDisplayG-EQ300 1P.INT(CIR 97.11.27 8:19 PM yW 3G-EQ3004PARTS DESCRIPTIONSG-EQ300 1P.INT(CIR 97.11.27 8:19 PM yW 4ABDFHJCEGI21357461818010050513130811691616998811111IGO113113EBBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBE

16、BEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBBEEBERefer to the schematic diagram for the value of resistors and capacitors.PC BOARD(Component side view)56G-EQ300(K) PCB/SD.INT 97.11.27 7:28 AM y W 1KMOQSLNPRT213574613171711317

17、1711251I G OEBO IG1114152810112012010111142815110201111428151101120145814111FREQUENCYJOG+EEBBEBEBEBAC OUTLETAC220240VAC110120VSYSTEMCONTROLOUTINRECOUTPLAYINTAPELINEMAINPOWERRefer to the schematic diagram for the value of resistors and capacitors.PC BOARD(Component side view)78G-EQ300(K) PCB/SD.INT 9

18、7.11.27 7:29 AM y W 2ABDFHJCEGI2135746DISPLAY PCBIC303IC306IC301IC305IC302IC304CCONTROLTAPE LEDRESETW305ZD305ZD304ZD306W302W301CN304CN303RESETAVR+5.6VAVR-5.6VD310D311D317Q302POWER LEDCONTROLD315BADED312D313D302D301ZD301ZD302Q394Q393Q301ZD303D303D305D304DISPLAY FILTER ICD307D306MAIN u-COMD308Q389D309

19、DISPLAY FILTER ICSUB u-COMQ322Q318Q317Q395Q334Q305Q303Q306Q307Q323Q324Q392Q321Q319Q320Q309Q313Q308Q310Q312Q304Q311Q315Q314Q316-5.3V+5.6V+5.6V+5.6V+5.6V-5.3V+4.8V+4.8V+4.8V+14.9V+4.7V+4.7V+4.7V+5.6V+5.6V+5.6V+5.6V-42V+5.6V-42V+5.6V-42V-42V-42V-42V-42V+4.7V+4.7V-42V+5.6V+4.7V+4.7V+4.7V1KR359C3230.01R3

20、0710K+5.6VQ302100Kx6100Kx6100Kx6100Kx6R313 100KR3301K39KR3551KR314 100KC3270.01+4.8V+4.8VR34527K1KR3449392313210u50C319+10u5013101110KR33810KR337C32147u63+C320+R339 2.7KR340 2.7K0.1C3240.1C325+C31510u5093928887R348 39KR347 39KR350 39KR349 39KR31110K373536343233310.01C311+C31247u161011R351 100KX302 6

21、MHz67R353 100K537311 ST7311 CLK7311 DATAL INR INSYSCONSYSCON(8.16BIT SEL)(7311 ST)(7311 CLK)(7305 DATA)(7305 CLK)(7305X301 6MHzKI1KI2KI3KI4KI5KI6KI7ENCODERENCODER5.6VGNDKO3KO2POWERKI7KI6KI5KI4KI3KI2KI1KI0KO0KO1TAPE5.6VACCENTERAC-42VGNDB-B+MUTES7305 DI7305 CLK S)(7311 DATA)74444543421211310BA556VEE7I

22、NH9CVSS81098765432132116VDD41141521310632COM745+C317 10u509596979899100114321123R354 100KR352 100KC316 10u50+47u16C3023.9KR303+C301220u16R3023.9K1/4W+47u16C303R301270+100u10C3061KR304+C3040.047F5.5R306 1.2K0.01C305100KR305+4.7V+4.7V+4.7V+4.7V+4.7V-5.3V-5.3V+4.8V+4.8V+5.6V+5.6V+5.6V+5.6V+5.6V+C3081u5

23、0OUTINGND0.01C307R31210K0.01C309R31010KR308100K11121310987654321C322 0.0110KR309237363534333231308788333435121391011363740416783451+5.6V+5.6V+5.6V-5.3V-5.3V-42V-42V-15.1V-42V+5.6V+4.7V-5.3V+4.8V+4.8V44R320 1K45R319 1KG7BB4B15B5G1BG3BG4BG5BG6BB1B10B2B11B9G2BB6B8B7B3B12B14B134948475054535251S20/PC4S18

24、/PC2S19/PC3S24/PD0S23/PC7S22/PC6S21/PC5464544434241S16/PC0S15/PB7S13/PB5S12/PB4S14/PB6S17/PC15657585560616259S30/PD6S29/PD5S28/PD4S27/PD3S26/PD2VSS2VDD265646369686766S36/PE4S38/PE6S37/PE5S35/PE3S34/PE2S33/PE1S32/PE0S31/PD7S25/PD1403938373635(ENCODER IN)S10/PB2SYSCON DATA S9/PB1S7/PA7S6/PA6SYSCON SEN

25、D S8/PB034323331S4/PA4S3/PA3S1/PA1P72/INT2/TOINP71/INT1S2/PA2P73/INT3/TOINS0/PA0S5/PA5P81/AN1P80/AN0P86/AN6P85/AN5P84/AN4P83/AN3P82/AN2CF2VDD1VSS1CF1XT2/P75P87/AN7(ENCODER IN)S11/PB373727177767574S44/PF4S45/PF5S43/PF3S42/PF2S41/PF1S40/PF0S39/PE780797882V2/PL58384V1/PL4COM0/PL081S47/PF7V3/PL6S46/PF68

26、58687COM2/PL2COM3/PL388P30P318990VSS3COM1/PL191P32(BACK UP)9293P3394P359596P00P3411RES8967P14/SI1/SB1P13/SO1 SUB STP15/SCK1P17/PWM0P16/BUZ97P0299P0398453P07P051P062P04P10/SO0P01P12/SCKO SUB CLKP11/SIO/SB0 SUB DATAP70/INT09597981009996100VDD3XT1/P7470R325G5AG6AG7AG8AG9AG14AG13AG12AG11AG10AA50A20A21A2

27、2A23A24A25C1,2,3G1AG2AG3AG4AA5A4A3A2A1A14A15A16A17A18A1940R324 1K41R323 1K42R322 1K43R321 1K3031330R315R316 100K373635343332212019100Kx8AR316R317 100K330R3186R328 1K53R3292625242322R333 560R334 560R335 560R336 560R326 1K7R327 1K131CLK/2VDD2OUTOUTCLKR3OUTCLKC5OUTL6OUTOUTGNDR8OUTOUTVSS74R346 1KR331 56

28、0R332 56076543211615141211910VDD1910RVSS98OUT2.2KR342R3411.6K1000PC314A39A40A45A13A12A11A10A9A8A7A6A36A35A34A33A32A31A30A29A28A27A26R3431MA38A41A42A43A44A370.01C3321M212018191716151413121029302728262422232588P3187P3086COM3/PL385COM2/PL284COM1/PL183COM0/PL082V1/PL4V3/PL68081V2/PL572S41/PF173S42/PF274

29、S43/PF375S44/PF476S45/PF577S46/PF678S47/PF779100P0599P0498P0397P0296P0195P0094P3593P3492P3391P3290VDD389VSS352S23/PC753S24/PD054S25/PD155VDD256VSS257S26/PD258S27/PD359S28/PD460S29/PD561S30/PD662S31/PD763S32/PE064S33/PE165S34/PE266S35/PE367S36/PE468S37/PE569S38/PE670S39/PE771S40/PF018VDD117CF216CF115

30、VSS114XT2/P7513XT1/P7412RES11P17/PWM010P70/INT0 (uCOM ST)9P16/BUZ8P15/SCK17P14/SI1/SB16P13/SO15P12/SCKO (uCOM CLK)4P11/SIO/SB0 (uCOM DATA)3P10/SO02P071P06S21/PC551S22/PC6S13/PB544S14/PB645S15/PB746S16/PC047S17/PC148S18/PC249S19/PC350S20/PC430S0/PA029P73/INT3/TOIN28P72/INT2/TOIN27P71/INT126P87/AN725P

31、86/AN624P85/AN523P84/AN422P83/AN321P82/AN220P81/AN119P80/AN0A49A48A47A4631S1/PA132S2/PA233S3/PA334S4/PA435S5/PA536S6/PA637S7/PA738S8/PB039S9/PB140S10/PB241S11/PB342S12/PB443G2BG3BG5BG1BG1BB15+C31810u50R3572.2K820R356B3B3AR314B1B5B4B1B4B5AR315B15G7BG6BG6BG7BG5BG4BG3BG2BG4B142OUT4OUT3CLK/211LGND125OUT

32、7OUTOUT6OUTCLKC202123252422OUT6261200PC3131611513CLKRB13B12B14B8B7B6B11B8B7B6B11B9B10B2B9B10B2AR312AR313B13B12B14()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()(

33、)()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()(4.7V4.7V5.8V4.8V4.7V5.4V6.1V-6.1V-5.3V-10.4V-15.1V14.9V-41.3V-38.2VH:4.3VL:0VON:0VOFF:4.6V5.4V4.8V4.7V-5.3V5.4V5.4V4

34、.8V4.7V4.7V5.4V4.9VG-EQ300(K) PCB/SD.INT 97.11.27 7:29 AM y W 3TKMOQSLNPRY09-4610-10G-EQ300CAUTION: For continued safety, replace safetycritical components only with manufacturersrecommended parts (refer to parts list). indicatessafety critical components. For continued protectionagainst risk of fir

35、e, replace only with same type andrating fuse(s). To reduce the risk of electric shock,leakage-current or resistance measurements shallbe carried out (exposed parts are acceptablyinsulated from the supply circuit) before theappliance is returned to the customer.The DC voltage is an actual reading me

36、asured witha high impedance type voltmeter. Themeasurement value may vary depending on themeasuring instruments used or on the product.AI LINKF3F2F1NARROWWIDEAI CCRSGRAPHICPARAMETRICREFERENCEAI AUTOAI MANUALMEMORYEQ. ONMANUALACBG-EQ300(M) (1/2)FREQUENCYJOGQ394: 2SA933SQ303-333,335-388,IC301: LC86722

37、4A-5D35DOWNSW410F1UPSW411SW412F2SW413F3SW414WIDESW415GRAPHICSW416W404EDENCODERS940: LC867224A-5D36: TC4051BPIC302IC303: MTZJ4.7B: FIP21BMW24: MTZJ5.6BZD304,305FLT301ZD306: XR1091PIC304,305: KIA7039PIC306: 2SC1740SQ301: DTC114ESQ302,389,395: DTA124ES390,391: KTA1271YQ334: 1SS131: MTZJ6.2BZD301,302: M

38、TZJ2.7BZD303D301-313,315,317Q393: KTD2058Y51432MEMORYSW422SW421SW420SW417SW418SW419GFGFPOWERSW403SW405PATTERNTAPESW404MANUALSW406SW407REVERSESW408PAUSEFLATSW409W403LED402LED401SW402DISPLAYEFFECTSW401Q392: KTC3227YPOPULARCLASSICSW426MOVIEROCKSW423W506SW424JAZZSW428FUSIONSW427SW425W505Q377Q376Q378Q381

39、Q382Q379Q380Q385Q386Q383Q384Q375Q374Q387Q388Q355Q371Q325Q326Q351Q352Q353Q354Q373Q372Q332Q333Q335Q336Q337Q338Q340Q346Q347Q339Q344Q343Q345Q368FLT301Q366Q367Q356Q357Q358Q370Q369Q390Q391Q349Q348Q328Q330Q329Q327Q341Q342Q331Q350Q363Q364Q365Q361Q362Q359Q36016K6.3K10K2.6K3.9K1.6K6261K400160260986340-42V-42V

40、-42V+5.6V+5.6V-42V+5.6V+5.6V-42V+5.6V10K10K+4.8V-42V-42V+5.6V-42V-42V+5.6V-42V+5.6V-42V+5.6V+5.6V+5.6V+5.6V+5.6V-B+BSIGNAL LINEGND LINEMAIN PCB-CN1012/2R401145678910111231310KR404C4010.0110KR4030.01C402R4022/22/2MAIN PCBKI3KI2KI1KI6KI5KI4KI7ENCODERGNDKO35.6VENCODERKO2KI7LEDKI4KI5KI6POWERKI1KI2KI3KO0

41、KI0KO1VCC +5VTAPE LEDACOMB100Kx6100Kx6100Kx6100Kx6AR309100Kx6100Kx6100Kx6100Kx6100Kx6100Kx6TRANSFORMER-CN102POWERKI2KI3KI6KI1KO1KO0KI01234567OUTOUT3112345678910A20A18A19A15A16A17A141312112680R406270R407KI67KI5KI454KO2KI3KI2213KI76KI0KO0KO1KI2KI1KI3KI6765432121KI2KI3465KI4KI7KI5KI67KO23G5BG6BG7BB15B4

42、B5B1B2B10B9B11B6B7B8B3B14B12B13A38A37A36A35G1BG2BG3BG4BG2AA25A24A23A22C1,2,3A21A1A2A3A4A5A6A7A8A9A10A11A12A13A36A37A38A36A37A38A34A33A32A31A30A29A28A27A26A39A40A41A32A33A34A35A32A33A34A35A28A29A30A31A28A29A30A31100Kx6A40A39A26A27A40A39A26A27AR310AR311A23A24A25C1,2,3G1AG2AG7AG8AG9AA21A22AR306G5AG6AG1

43、AG2AG3AG4AA23A24AR305A25C1,2,3A41A42A43A44A44A43A42A41AR308AR307A45A46A47A48A49A50G14AG13AG13AG14AA50A49A48A47A46A45G12AG11AG10AG10AG11AG12AA21A22A13A13A11A11A12A12A2A2A3A3A15A14A14A1A1A17A17A16A16A15A19A19A18A18G3AG4AG5AG6AG7AG8AG9AAR301AR302AR303AR304A20A20A8A9A9A10A10A6A6A7A7A8A4A4A5A5A42A43A44A4

44、5A46A47A48A49A50G14AG13AG12AG11AG10AG8AG9AG6AG7AG5AG3AG4AG1AF97F96NP95(G1B)94(G2B)93(G3B)92(G4B)91(G5B)90(G6B)89(G7B)88(B15)87(B4)86(B5)85(B1)84(B2)83(B10)82(B9)81(B11)80(B6)79(B7)78(B8)77(B3)76(B14)75(B12)74(B13)73IC72IC71(A38)70(A37)69(A36)68(A35)67(A34)66(A33)65(A32)64(A31)63(A30)62(A29)61(A28)60

45、(A27)59(A26)58(A39)57(A40)56(A41)55(A42)54(A43)53(A44)52(A45)51(A46)50(A47)49(A48)48(A49)47(A50)46(G14A)45(G13A)44(G12A)43(G11A)42(G10A)41(G9A)40(G8A)39(G7A)38(G6A)37(G5A)36(G4A)35(G3A)34(G2A)33(G1A)32(C3)31(C2)30(C1)29(A25)28(A24)27(A23)26(A22)25(A21)24(A20)23(A19)22(A18)21(A17)20(A16)19(A15)18(A14

46、)17(A1)16(A2)15(A3)14(A4)13(A5)12(A6)11(A7)10(A8)9(A9)8(A10)7(A11)6(A12)5(A13)4NP3F21F)()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()(

47、)()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()(-B LINE+B LINE5.4V4.8VB10B9B11B2B1B1B13B10B12B14B11B9B8B7B6B5B4B3B2B1G7BG6BG5BG4BG3BG2BG1BB3B8B7B6B15B1B1B1B1A8A9A6A7A10A3A4A1A2G14AA5A15A50A16A17A20A13A14A11A12A25A23A24A21A22A18A19C3C2C1B14B4B

48、16B5B13B12A48A49A46A47A43A44A41A42A45A38A39A36A37A33A34A31A32A35A28A29A26A27A30A40A25A23A24A21A22A18A19A25A23A24A1A2G12AA5A15A50A48A49A46A47A43A44A41A42A45A38A39A36A37A33A34A31A32A35A28A29A26A27A30A40A21A22A18A19A29A26A27A30A40A25A23A24A3A4A1A2G13AA5A15A50A48A49A46A47A43A44A41A42A45A38A39A36A37A33A3

49、4A31A32A35A28A8A9A6A7A10A13A14A11A12A6A7A10A3A4A16A17A20A13A14A11A12A8A9A6A7A10A3A4A21A22A18A19A16A17A20A13A14A11A12A18A19A16A17A20A21A22A15A50A48A49A46A47A43A44A41A42A45A38A39A36A37A33A34A31A32A35A28A29A26A27A30A40A25A23A24A11A12A8A9A16A17A20A13A14A3A4A1A2G10AA5A8A9A6A7A10A13A14A11A12A18A19A16A17A2

50、0A23A24A21A22A1A2G11AA5A15A50A48A49A46A47A43A44A41A42A45A38A39A36A37A33A34A31A32A35A28A29A26A27A30A40A25A16A17A20A13A14A11A12A8A9A6A7A10A3A4A21A22A18A19A32A35A28A29A26A27A30A40A25A23A24A3A4A1A2G9AA5A15A50A48A49A46A47A43A44A41A42A45A38A39A36A37A33A34A31A8A9A6A7A10A11A12A8A9A6A7A10A3A4A1A2G7AA5A15A50A