Kenwood-KTF-2010-Service-Manual电路原理图.pdf

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1、AM-FM STEREO SYNTHESIZER TUNERKTF-2010/3010SERVICE MANUAL1998-1/B51-5407-00 (K/K) 2106How to reset the microcomputerThe microcomputer may malfunction (impossibility operation,erro-neous display,etc.)when the power cord is unplugged and pluggedin again while the unit is in ON mode with the Key presse

2、d or dueto other extern al causes.In this case,execute the procedure on theright to reset the microcomputer and return the unit to the normalconditionUnplug the power cord form the wall outlet.While pressing and holding the (ON/STANDBY) key,plug the AC cord into the wall outlet againResetting the mi

3、crocomputer clears the memory you entered andreturns in to the initial condition when the unit left the factory.HIGHBLENDWIDENARROWRFATTAUTO/MANUAL+10/CLEAR1ACTIVERECEPTIONIF BANDTA/NEWSPTY/PTY SEARCHRF ATTDISPLAYANT A/BMEMORYAM-FM STEREO SYNTHESIZER TUNER KTF-2010BANDP. CALLDOWNUPTUNING/MULTI CONTR

4、OL34567890/CHARA2ON/STANDBYANTENNAGNDAMFM 75SYSTEMCONTROLOUTPUTR LSL16XS 8KENWOOD badge(B43-0302-04)Knob(K29-6882-03)Panel(A60-1336-02)Metallic cabinet(A01-3559-01)Power cord bushing(J42-0083-05)Slide switch(S31-2132-05)Miniature phone jack(E11-0188-05)ACpower code*(E30-)Lock terminal board(E20-0321

5、-05)Phono jack(E63-0068-15)Front glass *(B10-)Knob(K29-6883-04)Illustration is KTF-2010.* Refer to parts list on page 18.(K)KTF-2010 1P( 98.4.25 4:21 PM yW2TUNEDAUTOkHzMHzSTEREOSTANDBYANTABMEMOTANEWSTPPTYARRDSEON*.MWLWFMHIGHBLENDWIDENARROWRFATTTUNING MODE+10/CLEAR1ACTIVERECEPTIONIF BANDTA/NEWSPTY/PT

6、YSEARCHRF ATTDISPLAYANT A/BMEMORYAM-FM STEREO SYNTHESIZER TUNER KTF-3010BANDP. CALLDOWNUPTUNING/MULTI CONTROL34567890/CHARA2ON/STANDBYSTANDBY indicatorRDS indicatorAR indicatorTA indicatorTP indicatorMEMORY indicatorPTY indicatorAntenna A/B indicatorKilohertz indicatorFrequency displayPreset channel

7、 displaySTATION NAME displayMagahertz indicatorReceiving band indicatorSignal indicatorEON indicatorTuning mode indicatorTUNED indicatorReception mode indicatorNEWS indicator1209&345678*!%#$DisplayAUTO/MANUAL with the KTF-2010 Lead wire antenna.1(T90-0809-05) Audio cord.1(E30-0505-05) AM loop antenn

8、a assy.1(T90-0195-05) System control cord.1(E30-2733-05) Loop antenna stand(J19-3645-05) AC plug adapter.1(E03-0115-05)(M type only)KTF-2010/30102ACCESSORIES / CONTROLSAccessoriesControls11POWER keyPress to turn on/off the power.22ACTIVE RECEPTION key(KTF-3010 only)Press to obtain the optimum recept

9、ion con-ditions for the signals being received.33IF BAND key(KTF-3010 only)Press to the intermediate frequency passband between WIDE(wide band) and NAR-ROW(narrow band).44RF ATT(KTF-3010 only)Press to minimize the RF reciprocal modula-tion and mixed modulation distortion whenthere is an adjacent cha

10、nnel with strong.55ATT A/B key(KTF-3010 only)Press to select the antenna when using 2antennas.66HIGH BLEND indicator(KTF-3010only)77WIDE indicator(KTF-3010 only)88NARROW indicator(KTF-3010only)99RF-ATT indicator (KTF-3010 only)00AUTO/MANUAL key(KTF-2010)TUNING MODE key(KTF-3010)Press to select the t

11、uning mode.!BAND keyPress to switch the broadcast band.TUNING/MULTI CONTROL knobUsed for tuning broadcast stations, selectingthe program type and entering characters.#TA/NEWS key$PTY/PTY SEARCH key%DISPLAY keyMEMORY keyUsed for storing broadcast stations andentering station names.&Numeric keysUsed f

12、or storing and calling up broadcaststations and entering station names.*P.CALL keyPress to recall a preset station.(K)KTF-2010 1P( 98.4.25 4:21 PM yW3KTF-2010/30103EXTERNAL VIEWIllustration is KTF-3010.HIGHBLENDWIDENARROWRFATTTUNING MODE+10/CLEAR1ACTIVERECEPTIONIF BANDTA/NEWSPTY/PTY SEARCHRF ATTDISP

13、LAYANT A/BMEMORYAM-FM STEREO SYNTHESIZER TUNER KTF-3010BANDP. CALLDOWNUPTUNING/MULTI CONTROL34567890/CHARA2ON/STANDBYANTENNAGNDAMFM 75BASYSTEMCONTROLOUTPUTR LSL16XS 8KENWOOD badge(B43-0302-04)Knob(K29-6928-03)Panel(A60-1357-02)Metallic cabinet(A01-3559-01)Power cord bushing(J42-0083-05)Slide switch(

14、S31-2132-05)Miniature phone jack(E11-0188-05)ACpower code*(E30-)Lock terminal board(E20-0321-05)Phono jack(E63-0068-15)RF coaxial cable receptacle(E04-0025-05)Front glass(B10-2449-03)Knob(K29-6883-04)* Refer to parts list on page 18.(K)KTF-2010 1P( 98.4.25 4:21 PM yW6KTF-2010/30104CIRCUIT DESCRIPTIO

15、N1. Test mode1-1. Test mode with the main unit keysa) Setting procedure While pressing the P.CALL key, plug the AC power cordto the power outlet.b) Cancellation Unplug the AC power cord. The initial setting will takeeffect and the test mode will be canceled.c) DescriptionAuto POWER ON When the AC po

16、wer cord is plugged while pressing theP.CALL key, the POWER will turn ON and all functionwill be at the initial setting.ALL LED ON mode When the AC power cord is plugged while pressing theP.CALL key, all the LEDs will turn ON. Any key opera-tion on the main unit thereafter will return the LEDs to no

17、r-mal.Main unit key validity check Whether the main units keys are operable (valid) can bechecked. Regarding the keys whose display does notchange when they are used, their display will be made tochange.09, +10 key operation Preset display : “ “ or “01“ “09“ When “0“ key is pressed, 10 ch is called.

18、When “1“ “9“ key is pressed, 1 ch 9 ch is called.When “+10“ key is pressed, “1-“ is displayed. Preset display : “1 -“ or “10“ “19“When “0“ key is pressed, 20 ch is called.When “1“ “9“ key is pressed, 11 ch 19 ch is called.When “+10“ key is pressed, “2 -“ is displayed. Preset display : “2 -“ or “20“

19、“29“When “0“ key is pressed, 30 ch is called.When “1“ “9“ key is pressed, 21 ch 29 ch is called.When “+10“ key is pressed, “3 -“ is displayed. Preset display : “3 -“ or “30“ - “39“When “0“ key is pressed, 40 ch is called.When “1“ “9“ key is pressed, 31 ch 39 ch is called.When “+10“ key is pressed, “

20、0 -“ is displayed.MUTE signal output The MUTE signal is not output.No Display for FL Press the DISPLAY key to turn on/off the segments of theFL.Slide Switch CheckThe FL shows the Serial Code(XS8/SL16) by pressing theMEMORY key.The FL shows the Channel Space(100kHz/50kHz) bypressing the CH. SPACE key

21、.The FL shows the normal mode by pressing the key andthe switch except the MEMORY and the Slide switch.Display ex.Serial CodeChannel SpaceXS8(or SL16)100(or 50)1-2. Test mode with serial communicationsRefer to the test mode serial code table.a) Setting procedure Plug the AC power cord and enter the

22、TEST ON code.8 bit serial communications: 71H16 bit serial communications: 0C2FFHb) Cancellation Enter the TEST OFF code (0CFEH) or unplug the ACpower cord.c) DescriptionOther operations during the serial test mode The main units keys will be effective. The serial test code can be received even with

23、in 1 secondof POWER ON / OFF.Required operations for the serial test mode The serial code for the serial test mode can be used tocheck the operation of all circuits. The code entered during the serial test mode will becomevalid regardless of the display mode. The following functions are available in

24、 the serial testmode.0 9, +10AUTO (AUTO ST. / HI BLEND / MONO)MEMORYUP / DOWN (MANUAL SCAN unnecessary)IF BAND, RF ATTACTIVE RECEPTIONANTENNA A, ANTENNA B, PTY, DISPLAY, ALL LEDON/OFF The MUTE signal is not output. This is for reducing theinput-output switching time during the measurement. When a va

25、lid serial code for the test mode is received, thecode identical to the code entered will be output. For checking the MUTE operation, MUTE has specificcodes.MUTE ON/OFF To switch cyclically, enter the individual serial code. Forexample for AUTO STEREO / MONO, enter the twocodes for AUTO STEREO and M

26、ONO. All the LEDs, turn ON / OFF is cancelled by inputting thecancelling code and returned the LEDs to normal. All functions (including the test mode) will be initialized.(K)KTF-2010 1P( 98.4.25 4:21 PM yW7KTF-2010/30105CIRCUIT DESCRIPTION1-3. Initial settingsa) Setting procedure If the unit has a b

27、ack-up function, hold down the POWERkey and plug the AC power cord. During the test mode with the main unit keys and the testmode with serial communications, the initial settings canbe obtained by unplug and plug the AC power cord.b) Description All function (including test mode) will be initialized

28、. The manufacturers memory is always set in the preset CHand area.1-4. POWER ON startup Since the unit has a POWER key, no setting is required.1-5. Initial statusPOWER ON/OFF: OFFTUNING MODE: AUTOPRESET MEMORY: TEST FREQUENCYLAST BAND: FMFM LAST FREQUENCY: OVERSEAS 87.5MHz/JAPAN 76.0MHzAM.MW LAST FR

29、EQUENCY: CH SPACE 9K 531kHz: CH SPACE 10K 530kHzLW LAST FREQUENCY: 153kHzLAST P.ch: -chRDS DISPLAY MODE: FREQUENCY DISPLAY MODETA / NEWS / TA, NEWS: OFFACTIVE RECEPTION: OFFANT A/B: AIF BAND: WIDERF ATT: OFFSERIAL: XS81-6. Back-up statusPOWER ON/OFFTUNING MODEPRESET MEMORY 140chLAST BANDLAST P.chLAS

30、T FM FREQUENCYLAST AM (MW) FREQUENCYRDS AUTO MEMORY LISTLAST LW FREQUENCYACTIVE RECEPTIONANT A/B*IF BAND*RF ATT*TA / NEWS / TA, NEWS*PS STATION NAME* : E, T type* : KTF-301089A.F0POWER OFF0MEMORY1POWER ON12MUTE OFF23MUTE ON34AUTO STEREO45MONO5PTY66DISPLAY77ATENNA A8Active reception OFF8ATENNA B9Acti

31、ve reception ON9All LED goes OFFARF ATT OFF+10All LED goes ONBRF ATT ONBAND FMAll LED ON : OFFCIF WIDEBAND AM/MWAll LED ON :ONDBAND LWHI BLENDInitial settingEIF NARROWTUNING DOWNTEST OFFFTUNING UPTEST ON1-7. 16-bit serial test code (C2XXH): KTF-3010 ONLYNote:Pls KT-2080/3080 service manual (B51-5128

32、-00) on test frequency table and channel space table.(K)KTF-2010 1P( 98.4.25 4:21 PM yW10KTF-2010/3010CIRCUIT DESCRIPTION6ED1HIGHBLENDLEDATTLEDNARROWLEDWIDELEDQ1,2Q3,4Q10ANTENNAA/BRFATTIFBANDHIGHBLENDTUNINGSDSTEREOL_LEVELS_LEVELTUNERMUTEPOWERuPD780206GF031u-COMENCODERRESETOSCILLATORSERIALCHIPENABLEX

33、S8/SL16KTF-2010/3010IC9KEYMATRIXRDSDEMODULATORICFLDISPLAYPLLICIC7IC2S26KR1 (#70)KR2 (#69)KR3 (#68)KR4 (#67)KR5 (#66)KR6 (#65)KS1(#82)ANT A/BON / STANBYMEMORY48P.CALLKS2(#81)ACTIVE RECEPTIONPTY159BANDKS3(#80)RF ATTTA / NEWS260+10KS4(#78)IF BANDDISPLAY37-TUNING MODEKS5(#77)DSW0 (D56)DSW1 (D57)DSW2 (D5

34、8)-means KTF-3010 ONLYKEY MATRIX2. Microprocessor : PD780206GF031 (IC9)2-1. Pin connection(K)KTF-2010 1P( 98.4.25 4:21 PM yW11KTF-2010/30107CIRCUIT DESCRIPTIONPin No.Pin NameI/ODescriptions1VddPower supply(+5V)28INo use9/CEIChip enableL : CE detection10/RESETIMicroprocessor resetL : RESET11,12X1,2IM

35、ain clock oscillator13IC(Vpp)Connect to VSS14,15XT1,2I16VddPower supply(+5V)17,18INo use19SBUSYI/OSerial busy signal20SDATAI/OSerial data signal21/HIGH BLENDIHi blendL : HIGH BLEND228/16OXS8/SL16 selectorL : SL1623/2080,3080Imodel selectorL : KTF201024POWEROPOWER detectionL : STANDBY25AvssA/D conver

36、ter gnd26PLL_DOIPLL DO27PLL_CEOPLL chip enable28PLL_DATAOPLL data detection29PLL_CLKOPLL clock30/T_MUTEOTUNER muteL : MUTE ON31INo use32S_LEVELISignal level33N_LEVELINoise level34AvddA/D converter analog voltage35AvrefA/D converter standard voltage36RDS_CLKIRDS demodulator IC clock37RDS_DATAIRDS dem

37、odulator IC data38,39INo use40VssGnd41,42INo use43/STEREOISTEREO pilot detection44/SDISD pilot detection45TUNINGOTo stop noise level detection in tuningH : TUNING46VddPower supply(+5V)4752INo use53/IF_BANDOIF BAND selectorL : WIDE54/RF_ATTORF_ATT selectorL : ON55ANT_BOAntennaB controlH : ANT B56ANT

38、AOAntennaA controlH : ANT A57ENC_BIEncoder counterclockwise detection58ENC_AIEncoder clockwise detection59HIGH_BLEND_LEDOHIGH BLEND LEDH : LED ON60WIDE_LEDOWIDE LEDH : LED ON61NARROW_LEDONARROW LEDH : LED ON62ATT_LEDOATT LEDH : LED ON63,64INo use6570KR61IKey return 617173ONo use7476SEG1614OFL segmen

39、t output161477SEG13/KS5OFL segment output13/key scan5(TUNER selector)78SEG12/KS4OFL segment output12/key scan479VloadFL controller/driver pull down resistor8082SEG119/KS31OFL segment output119/key scan318390SEG81OFL segment output8191100GRID110OFL grid output1102-2 Pin function(K)KTF-2010 1P( 98.4.2

40、5 4:21 PM yW14KTF-2010/30108ADJUSTMENTX05-CN4+OscilloscopeDistortionmeterACvoltmeterDCvoltmeterDummyantenna(B)FIG.(a)ANTENNAGNDAMFM75BASYSTEMCONTROLCRCROUTPUTR LSL16XS8(A)(C)(D)FM-MPX-SGFM-MPX-SGPOLAR-SGAM-SGNO.ITEMINPUTSETTINGSOUTPUTSETTINGSTUNERSETTINGSALIGNMENTPOINTSALIGN FORFIG.1.SENSITIVITY(KTF

41、-3010 ONLY)(A)98MHz MONO1kHz, 40kHz dev Approx. 20dBf(ANT input)(B)AUTO : WIDERF ATT : OFF98.0MHzL1Maximumamplitude2.DISCRIMINATOR(A)98.0 MHz MONO1kHz, 40kHz dev70dBf (ANT input)Connect a DCvoltmeter(X05-) to CN4.L60V30mV(a)3.DISTORTION(A)98MHz MONO1kHz, 40kHz dev70dBf (ANT input)(B)L7Minimum distor

42、tion4.DISTORTION(STEREO)(KTF-2010 ONLY)(C)98.0MHz 1kHz,68.25kHz devSelector : L or R60dBf (ANT input)(B)AUTO98.0MHzA1(FRONTEND)Minimum distortion5.S.METER LEVEL(A)98MHz MONO1KHz, 40kHz dev36dBf (ANT input)VR1VR4Turn VR1 to fullyclockwise. Adjust VR4 and3 LEDs light on.6.AUTO STOP LEVEL(A)98.0MHz MON

43、O1kHz, 40kHz dev25dBf (ANT input)VR1Adjust VR1 and stopat the point whereED1 (TUNED)goes ON.7.SEPARATION(A)98.0MHz 1kHz,40kHz dev pilot 6kHz dev Selector : L or R70dBf (ANT input)(B)VR3Minimum crosstalk1AUTO STOP LEVEL(D)999kHz MONO400Hz, 30% mod28dB(ANT input)999 kHzVR2Adjust VR2 and stopat the poi

44、nt whereED1 (TUNED)goes ON.FM SECTION BAND : FMAM SECTIONBAND : AM(MW)When TUNER PCB (X05-) is disconnected from main unit,connect PCBs GND (ANT shield plate) and main unit chassisusing aligator clip. Then, check TUNER PCB.CTUNER SETTINGSKTF-2010 :AUTO, 98.0MHz KTF-3010 :AUTO : WIDE, RF ATT OFF : 98

45、MHz(K)KTF-2010 1P( 98.4.25 4:21 PM yW152 1357 46ABDFHJCEGIIC2(X05-484X-XX) (A/4)IC7IC8A1 (W02-2512-05) KT-2010 (M1,X1) TYPE(E,T1,E1,T2,J) TYPE(M1,X1) TYPEUN4112 2SB1218A(Q,R) or:Q82SC4081(R,S) 2SD1819A(Q,R) or:Q72SK302(Y,GR):Q5,6DTA124EUA:Q3DTC124EUA:Q1,2,4,32S-806D-Z:IC8SAA6579T SAA6579T/R or:IC7MC

46、13028AM:IC6LA3401:IC4NJM4565D-D:IC3,5LC72131:IC2LA1266:IC1(u-COM) 5.6V AVRL.P.F(FL)-30V AVR12V AVR2SD1302(S,T):Q20-222SC1845(F,E):Q18,192SA992(F,E):Q16,172SC1923(R,O):Q122SC2785(F,E) 2SC1740S(Q,R) or:Q11,13-15,28,38-41,44,48,53,59UN4212 DTC124ESA or:Q10,33,35,43,50DTA124ESA or:Q9,23,25,452SA1576A(R,

47、S)-B LINE +B LINE(1.1V)2.4V4.8V4.8V2.4V2.2V2.4V(2.5V)0V0V(0.3V)2.2V4.7V(4.8V)2.3V(0V)(2.3V)0V0.2V0V(11.7V)0V12.0V(0V)12.3V(12.4V)(2.8V)2.9V12.0V(0.1V) 4.7V(4.8V)0V0V2.4V(2.5V)3.9V(3.6V)(1.1V)2.5V2.5V4.7V5.4V1.2V3.9V3.5V2.0VW: 0VN:4.3V3.5V1.0V4.1V3.3V1.3VN: 0.4V W:10.6VN:11.0V W:11.4V4.1V3.5V7.6VN: 0

48、V W:11.4VN:10.6V W: 0.2VW:11.3VN: 0.6V3.1V(2.2V)2.3V0.3V3.9V(3.6V)2.4V2.4V4.8V2.9V5.7V5.8VON:11.4VOFF: 0VATTON: 0VATTANTA:3.5VOFF:3.5VB:10.6V A: 0VANTANTA: 0VB:3.5VANT108MHz90MHz FREQ7.5V 1.4VVT(VOLT)1602KHz531KHz 279KHz 153KHz6.7V 1.1V-31.4V-35.7V-34.6V-16.6V-25.4V-25.4V-0.6V7.2V 2.8VMW:12.4VLW: 0.1VB: 0VXBANDVT VOLTFMB: 0VMW LWAMLW:12.4VMW: 0V5.2VMW: 0VLW:0.6VLW:0V2.9VMW:LW:0V0.6VMW:LW: 0V MW:0.6VA:10.6V4.8V5.2V5.1V11.6V4.8V-32.0V6.3V-26.2V236455 4 36 7 8 9102R404 1K+BSIGNAL LINEGND LINE: AC230V 50Hz : AC240V 50Hz220-240V50/60Hz: AC110-120V/(T,E)(X) (M)T110987-BVDD+B+BW239100P C18C88220PR