Kenwood-KTF3010-tun-sm 电路图 维修手册.pdf

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1、AM-FM STEREO SYNTHESIZER TUNER KTF-2010/3010 SERVICE MANUAL 1998-1/B51-5407-00 (K/K) 2106 How to reset the microcomputer The microcomputer may malfunction (impossibility operation,erro- neous display,etc.)when the power cord is unplugged and plugged in again while the unit is in ON mode with the Key

2、 pressed or due to other extern al causes.In this case,execute the procedure on the right to reset the microcomputer and return the unit to the normal condition Unplug the power cord form the wall outlet. While pressing and holding the (ON/STANDBY) key, plug the AC cord into the wall outlet again Re

3、setting the microcomputer clears the memory you entered and returns in to the initial condition when the unit left the factory. HIGHBLEND WIDE NARROW RFATT AUTO/MANUAL+ 10/CLEAR 1 ACTIVE RECEPTIONIF BAND TA/NEWS PTY/ PTY SEARCH RF ATT DISPLAY ANT A/B MEMORY AM-FM STEREO SYNTHESIZER TUNER KTF-2010 BA

4、ND P. CALL DOWNUP TUNING/MULTI CONTROL 34567890/CHARA2 ON/STANDBY ANTENNA GNDAMFM 75 SYSTEM CONTROL OUTPUT R L SL16 XS 8 KENWOOD 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

5、(E11-0188-05) AC power code* (E30-) Lock terminal board (E20-0321-05) 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 yW 2 RadioFans.CN 收音机爱 好者资料库 TUNED AUTO kHz MHz STEREOSTANDBYANT ABMEMOTA

6、 NEWSTPPTYAR RDSEON * * *. MW LW FM HIGHBLEND WIDE NARROW RFATT TUNING MODE+ 10/CLEAR 1 ACTIVE RECEPTIONIF BAND TA/NEWS PTY/PTY SEARCH RF ATT DISPLAY ANT A/B MEMORY AM-FM STEREO SYNTHESIZER TUNER KTF-3010 BAND P. CALL DOWNUP TUNING/MULTI CONTROL 34567890/CHARA2 ON/STANDBY STANDBY indicator RDS indic

7、ator AR indicator TA indicatorTP indicatorMEMORY indicator PTY indicatorAntenna A/B indicator Kilohertz indicator Frequency display Preset channel display STATION NAME display Magahertz indicator Receiving band indicatorSignal indicator EON indicator Tuning mode indicator TUNED indicator Reception m

8、ode indicator NEWS indicator 1209 & 3 45678 * ! % # $ Display AUTO/MANUAL with the KTF-2010 Lead wire antenna.1 (T90-0809-05) Audio cord.1 (E30-0505-05) AM loop antenna 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

9、 only) KTF-2010/3010 2 ACCESSORIES / CONTROLS Accessories Controls 11 POWER key Press to turn on/off the power. 22 ACTIVE RECEPTION key(KTF- 3010 only) Press to obtain the optimum reception con- ditions for the signals being received. 33 IF BAND key(KTF-3010 only) Press to the intermediate frequency

10、 pass band between WIDE(wide band) and NAR- ROW(narrow band). 44 RF ATT(KTF-3010 only) Press to minimize the RF reciprocal modula- tion and mixed modulation distortion when there is an adjacent channel with strong. 55 ATT A/B key(KTF-3010 only) Press to select the antenna when using 2 antennas. 66 H

11、IGH BLEND indicator(KTF-3010 only) 77 WIDE indicator(KTF-3010 only) 88 NARROW indicator(KTF-3010 only) 99 RF-ATT indicator (KTF-3010 only) 00 AUTO/MANUAL key(KTF-2010) TUNING MODE key(KTF-3010) Press to select the tuning mode. ! BAND key Press to switch the broadcast band. TUNING/MULTI CONTROL knob

12、Used for tuning broadcast stations, selecting the program type and entering characters. # TA/NEWS key $ PTY/PTY SEARCH key % DISPLAY key MEMORY key Used for storing broadcast stations and entering station names. & Numeric keys Used for storing and calling up broadcast stations and entering station n

13、ames. * P.CALL key Press to recall a preset station. (K)KTF-2010 1P( 98.4.25 4:21 PM yW 3 RadioFans.CN 收音机爱 好者资料库 KTF-2010/3010 3 EXTERNAL VIEW Illustration is KTF-3010. HIGHBLEND WIDE NARROW RFATT TUNING MODE+ 10/CLEAR 1 ACTIVE RECEPTIONIF BAND TA/NEWS PTY/ PTY SEARCH RF ATT DISPLAY ANT A/B MEMORY

14、AM-FM STEREO SYNTHESIZER TUNER KTF-3010 BAND P. CALL DOWNUP TUNING/MULTI CONTROL 34567890/CHARA2 ON/STANDBY ANTENNA GNDAMFM 75 BA SYSTEM CONTROL OUTPUT R L SL16 XS 8 KENWOOD badge (B43-0302-04) Knob (K29-6928-03) Panel (A60-1357-02) Metallic cabinet (A01-3559-01) Power cord bushing (J42-0083-05) Sli

15、de switch (S31-2132-05) Miniature phone jack (E11-0188-05) AC power 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 yW 6 Ra

16、dioFans.CN 收音机爱 好者资料库 KTF-2010/3010 4 CIRCUIT DESCRIPTION 1. Test mode 1-1. Test mode with the main unit keys a) Setting procedure While pressing the P.CALL key, plug the AC power cord to the power outlet. b) Cancellation Unplug the AC power cord. The initial setting will take effect and the test mo

17、de will be canceled. c) Description Auto POWER ON When the AC power cord is plugged while pressing the P.CALL key, the POWER will turn ON and all function will be at the initial setting. ALL LED ON mode When the AC power cord is plugged while pressing the P.CALL key, all the LEDs will turn ON. Any k

18、ey opera- tion on the main unit thereafter will return the LEDs to nor- mal. Main unit key validity check Whether the main units keys are operable (valid) can be checked. Regarding the keys whose display does not change when they are used, their display will be made to change. 09, +10 key operation

19、Preset display : or 01 09 When 0 key is pressed, 10 ch is called. 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 -

20、 is displayed. Preset display : 2 - or 20 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

21、 +10 key is pressed, 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 the FL. Slide Switch Check The FL shows the Serial Code(XS8/SL16) by pressing the MEMORY key. The FL shows the Channel Space(100kHz/50kHz) b

22、y pressing the CH. SPACE key. The FL shows the normal mode by pressing the key and the switch except the MEMORY and the Slide switch. Display ex. Serial CodeChannel Space XS8(or SL16)100(or 50) 1-2. Test mode with serial communications Refer to the test mode serial code table. a) Setting procedure P

23、lug the AC power cord and enter the TEST ON code. 8 bit serial communications: 71H 16 bit serial communications: 0C2FFH b) Cancellation Enter the TEST OFF code (0CFEH) or unplug the AC power cord. c) Description Other operations during the serial test mode The main units keys will be effective. The

24、serial test code can be received even within 1 second of POWER ON / OFF. Required operations for the serial test mode The serial code for the serial test mode can be used to check the operation of all circuits. The code entered during the serial test mode will become valid regardless of the display

25、mode. The following functions are available in the serial test mode. 0 9, +10 AUTO (AUTO ST. / HI BLEND / MONO) MEMORY UP / DOWN (MANUAL SCAN unnecessary) IF BAND, RF ATT ACTIVE RECEPTION ANTENNA A, ANTENNA B, PTY, DISPLAY, ALL LED ON/OFF The MUTE signal is not output. This is for reducing the input

26、-output switching time during the measurement. When a valid serial code for the test mode is received, the code identical to the code entered will be output. For checking the MUTE operation, MUTE has specific codes. MUTE ON/OFF To switch cyclically, enter the individual serial code. For example for

27、AUTO STEREO / MONO, enter the two codes for AUTO STEREO and MONO. All the LEDs, turn ON / OFF is cancelled by inputting the cancelling 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 yW 7 KTF-2010/3010 5 CIRCUIT DESCR

28、IPTION 1-3. Initial settings a) Setting procedure If the unit has a back-up function, hold down the POWER key and plug the AC power cord. During the test mode with the main unit keys and the test mode with serial communications, the initial settings can be obtained by unplug and plug the AC power co

29、rd. b) Description All function (including test mode) will be initialized. The manufacturers memory is always set in the preset CH and area. 1-4. POWER ON startup Since the unit has a POWER key, no setting is required. 1-5. Initial status POWER ON/OFF: OFF TUNING MODE: AUTO PRESET MEMORY: TEST FREQU

30、ENCY LAST BAND: FM FM LAST FREQUENCY: OVERSEAS 87.5MHz /JAPAN 76.0MHz AM.MW LAST FREQUENCY: CH SPACE 9K 531kHz : CH SPACE 10K 530kHz LW LAST FREQUENCY: 153kHz LAST P.ch: -ch RDS DISPLAY MODE: FREQUENCY DISPLAY MODE TA / NEWS / TA, NEWS: OFF ACTIVE RECEPTION: OFF ANT A/B: A IF BAND: WIDE RF ATT: OFF

31、SERIAL: XS8 1-6. Back-up status POWER ON/OFF TUNING MODE PRESET MEMORY 140ch LAST BAND LAST P.ch LAST FM FREQUENCY LAST AM (MW) FREQUENCY RDS AUTO MEMORY LIST LAST LW FREQUENCY ACTIVE RECEPTION ANT A/B* IF BAND* RF ATT* TA / NEWS / TA, NEWS* PS STATION NAME* * : E, T type * : KTF-3010 89A.F 0POWER O

32、FF0MEMORY 1POWER ON1 2MUTE OFF2 3MUTE ON3 4AUTO STEREO4 5MONO5PTY 66DISPLAY 77ATENNA A 8Active reception OFF8ATENNA B 9Active reception ON9All LED goes OFF ARF ATT OFF+10All LED goes ON BRF ATT ONBAND FMAll LED ON : OFF CIF WIDEBAND AM/MWAll LED ON :ON DBAND LWHI BLENDInitial setting EIF NARROWTUNIN

33、G DOWNTEST OFF FTUNING UPTEST ON 1-7. 16-bit serial test code (C2XXH) : KTF-3010 ONLY Note : Pls KT-2080/3080 service manual (B51-5128-00) on test frequency table and channel space table. (K)KTF-2010 1P( 98.4.25 4:21 PM yW 10 KTF-2010/3010 CIRCUIT DESCRIPTION 6 ED 1 HIGH BLEND LED ATT LED NARROW LED

34、 WIDE LED Q1, 2 Q3, 4 Q10 ANTENNA A/B RF ATT IF BAND HIGH BLEND TUNING SD STEREO L_LEVEL S_LEVEL TUNER MUTE POWER uPD780206GF031 u-COM ENCODER RESET OSCILLATOR SERIAL CHIP ENABLE XS8 / SL16 KTF-2010/3010 IC 9 KEY MATRIX RDS DEMODULATOR IC FL DISPLAY PLL IC IC 7 IC 2 S 26 KR1 (#70)KR2 (#69)KR3 (#68)K

35、R4 (#67) KR5 (#66)KR6 (#65) KS1 (#82) ANT A/BON / STANBYMEMORY48P.CALL KS2 (#81) ACTIVE RECEPTION PTY159BAND KS3 (#80) RF ATTTA / NEWS260+10 KS4 (#78) IF BANDDISPLAY37-TUNING MODE KS5 (#77) DSW0 (D56)DSW1 (D57)DSW2 (D58)- means KTF-3010 ONLY KEY MATRIX 2. Microprocessor : PD780206GF031 (IC9) 2-1. Pi

36、n connection (K)KTF-2010 1P( 98.4.25 4:21 PM yW 11 KTF-2010/3010 7 CIRCUIT DESCRIPTION Pin No.Pin NameI/ODescriptions 1VddPower supply(+5V) 28INo use 9/CEIChip enableL : CE detection 10/RESETIMicroprocessor resetL : RESET 11,12X1,2IMain clock oscillator 13IC(Vpp)Connect to VSS 14,15XT1,2I 16VddPower

37、 supply(+5V) 17,18INo use 19SBUSYI/OSerial busy signal 20SDATAI/OSerial data signal 21/HIGH BLENDIHi blendL : HIGH BLEND 228/16OXS8/SL16 selectorL : SL16 23/2080,3080Imodel selectorL : KTF2010 24POWEROPOWER detectionL : STANDBY 25AvssA/D converter gnd 26PLL_DOIPLL DO 27PLL_CEOPLL chip enable 28PLL_D

38、ATAOPLL data detection 29PLL_CLKOPLL clock 30/T_MUTEOTUNER muteL : MUTE ON 31INo use 32S_LEVELISignal level 33N_LEVELINoise level 34AvddA/D converter analog voltage 35AvrefA/D converter standard voltage 36RDS_CLKIRDS demodulator IC clock 37RDS_DATAIRDS demodulator IC data 38,39INo use 40VssGnd 41,42

39、INo use 43/STEREOISTEREO pilot detection 44/SDISD pilot detection 45TUNINGOTo stop noise level detection in tuningH : TUNING 46VddPower supply(+5V) 4752INo use 53/IF_BANDOIF BAND selectorL : WIDE 54/RF_ATTORF_ATT selectorL : ON 55ANT_BOAntennaB controlH : ANT B 56ANT AOAntennaA controlH : ANT A 57EN

40、C_BIEncoder counterclockwise detection 58ENC_AIEncoder clockwise detection 59HIGH_BLEND_LEDOHIGH BLEND LEDH : LED ON 60WIDE_LEDOWIDE LEDH : LED ON 61NARROW_LEDONARROW LEDH : LED ON 62ATT_LEDOATT LEDH : LED ON 63,64INo use 6570KR61IKey return 61 7173ONo use 7476SEG1614OFL segment output1614 77SEG13/K

41、S5OFL segment output13/key scan5(TUNER selector) 78SEG12/KS4OFL segment output12/key scan4 79VloadFL controller/driver pull down resistor 8082SEG119/KS31OFL segment output119/key scan31 8390SEG81OFL segment output81 91100GRID110OFL grid output110 2-2 Pin function (K)KTF-2010 1P( 98.4.25 4:21 PM yW 1

42、4 KTF-2010/3010 8 ADJUSTMENT X05- CN4 + Oscilloscope Distortion meter AC voltmeter DC voltmeter Dummy antenna (B) FIG. (a) ANTENNA GNDAMFM 75 BA SYSTEM CONTROL ? ? OUTPUT R L SL16 XS 8 (A) (C) (D) FM-MPX-SG FM-MPX-SGPOLAR-SG AM-SG NO.ITEM INPUT SETTINGS OUTPUT SETTINGS TUNER SETTINGS ALIGNMENT POINT

43、S ALIGN FORFIG. 1. SENSITIVITY (KTF-3010 ONLY) (A) 98MHz MONO 1kHz, 40kHz dev Approx. 20dBf (ANT input) (B) AUTO : WIDE RF ATT : OFF 98.0MHz L1 Maximum amplitude 2.DISCRIMINATOR (A) 98.0 MHz MONO 1kHz, 40kHz dev 70dBf (ANT input) Connect a DC voltmeter (X05-) to CN4. L6 0V30mV(a) 3.DISTORTION (A) 98

44、MHz MONO 1kHz, 40kHz dev 70dBf (ANT input) (B) L7Minimum distortion 4. DISTORTION (STEREO) (KTF-2010 ONLY) (C) 98.0MHz 1kHz, 68.25kHz dev Selector : L or R 60dBf (ANT input) (B) AUTO 98.0MHz A1(FRONT END) Minimum distortion 5.S.METER LEVEL (A) 98MHz MONO 1KHz, 40kHz dev 36dBf (ANT input) VR1 VR4 Tur

45、n VR1 to fully clockwise. Adjust VR4 and 3 LEDs light on. 6.AUTO STOP LEVEL (A) 98.0MHz MONO 1kHz, 40kHz dev 25dBf (ANT input) VR1 Adjust VR1 and stop at the point where ED1 (TUNED) goes ON. 7.SEPARATION (A) 98.0MHz 1kHz, 40kHz dev pilot 6kHz dev Selector : L or R 70dBf (ANT input) (B) VR3Minimum cr

46、osstalk 1AUTO STOP LEVEL (D) 999kHz MONO 400Hz, 30% mod 28dB (ANT input) 999 kHzVR2 Adjust VR2 and stop at the point where ED1 (TUNED) goes ON. FM SECTION BAND : FM AM SECTIONBAND : AM(MW) When TUNER PCB (X05-) is disconnected from main unit,connect PCBs GND (ANT shield plate) and main unit chassis

47、using aligator clip. Then, check TUNER PCB. TUNER SETTINGS KTF-2010 : AUTO, 98.0MHz KTF-3010 : AUTO : WIDE, RF ATT OFF : 98MHz (K)KTF-2010 1P( 98.4.25 4:21 PM yW 15 2 1 3 5 7 4 6 ABDFHJCEGI IC2 (X05-484X-XX) (A/4) IC7 IC8 A1 (W02-2512-05) KT-2010 (M1,X1) TYPE (E,T1,E1,T2,J) TYPE (M1,X1) TYPE UN4112

48、2SB1218A(Q,R) or:Q8 2SC4081(R,S) 2SD1819A(Q,R) or:Q7 2SK302(Y,GR):Q5,6 DTA124EUA:Q3 DTC124EUA:Q1,2,4,32 S-806D-Z:IC8 SAA6579T SAA6579T/R or:IC7 MC13028AM:IC6 LA3401:IC4 NJM4565D-D:IC3,5 LC72131:IC2 LA1266:IC1 (u-COM) 5.6V AVR L.P.F (FL) -30V AVR 12V AVR 2SD1302(S,T):Q20-22 2SC1845(F,E):Q18,19 2SA992

49、(F,E):Q16,17 2SC1923(R,O):Q12 2SC2785(F,E) 2SC1740S(Q,R) or: Q11,13-15,28,38-41,44,48,53,59 UN4212 DTC124ESA or:Q10,33,35,43,50 DTA124ESA or:Q9,23,25,45 2SA1576A(R,S) -B LINE +B LINE (1.1V) 2.4V 4.8V 4.8V 2.4V2.2V 2.4V (2.5V) 0V 0V (0.3V) 2.2V 4.7V (4.8V) 2.3V (0V)(2.3V) 0V 0.2V 0V (11.7V) 0V 12.0V (0V) 12.3V (12.4V) (2.8V) 2.9V 12.0V (0.1V) 4.7V (4.8V) 0V 0V 2.4V (2.5V) 3.9V (3.6V) (1.1V) 2.5V2.5V