Pioneer-SK909L-pr-sm电路图 维修手册.pdf

《Pioneer-SK909L-pr-sm电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Pioneer-SK909L-pr-sm电路图 维修手册.pdf（19页珍藏版）》请在收音机爱好者资料库上搜索。

1、PIONEER ORDER NO. HRT- 178- 0 PORTABLE STEREO FM/SW/MW/lW RADIO CASSETTE RECORDER -L HT,HB Subject: The SK-909L1HT, HB manual is designed to be used together with Model SK-900/KC Service Manual (HRT-177). Refer to these service manuals for parts and adjustment, etc. which are not given in the manual

2、s. SPECIFICATIONS Max. rated output Power . 13W+ 13W/BQ, 5% THD. Max. music power . 40W total music power Speaker . Air-tight cabinet, 12cm (5 in.! mechanical 2 way system with passive radiator ReeordingI playback frequency characteristics. SO-14,OOOHz I:!:3dSI (Normal tape) 5ON15,OOOHz (:!:3dS) (cr

3、O, tape) SO-16,OOOHz (:!:3dB) IMetal tape) Recording/playback sm ratio. 59dB (Oolby NR on, Normal tape) 51d8 (Dolby NR off, Normal tape) Input. . .AUX, PHONO, MIC (also functions as MIX MIC1, EXT. ANT Output . LINE OUT, PHONES Subfunctions . Oolby NR, Tape seiector (MetaIiCrOl NormalI, Auto/manual r

4、ecording, Skip search, Mus;c repeat, One side repeat, Automatie editor, Time, standby mache nism, 6band graphie equalizer, FM muting, Stereo microphone mixing Indicators .Red LEDs: crO METAL, AUTO EDI TOR, REC, PHONO/AUX, AM, .FM, FM MODE, STEREO, OPERATION, SKIP SEARCH (8) Green LEDs: DOLBY NR, PLA

5、Y, REW, FF, PAUSE, ONE SIDE REPEAT, MUSIC REPEAT, TAPE Others: ACCESS TUNING ne green), LEVEL stereo meter) Frequency range . FM: 88-l04MHz SW: e18MHz MW: 525rvl,605kHz LW: lSO280kHz Powersource. ZlSJ/240V AC, SO/60Hz; ten size 0 flash light batteries (1.5V); EXT 15V oe mI5V) Dimensions (WxHXO) .:.

6、655x235x16Omm (25-3/4x9-1/4x6-1/4 in.! Weight . 9.9Ig (21.8 Ibs., witihout batteriesI Note: Specificatlons end design are subject to chfinge without notice. c:J I I OJ I 1 OOtjOOJr re -I ! ! J 160-1 170 (m) PIONEER ELECTRONIC CORPORATION 4-1. Megwro ,ehorne. Meguro-ku. TOkyo 153. Jepe., pK)Nee ELECT

7、RONICa - CF AMSRICA 1925E, Oornlnguez sc. Long Seaen. CaJif. 90810 PtONI/ElER IELECTRONIC (EUCPIE) N .V LU,(,hagen-Haven 9.2030 Antwerp, Selg,uf1l PIClNEIER ELlECTRDNICa AUBTRALtA PTV L.TC. 1 78-184 Boufldary oad. Braeslde. Vlcor.! :31 95. Aust;raha F S AUG. 19B1 Printed in Japan RadioFans.CN 收音机爱 好

8、者资料库 i3dt . , , , 07- , . 0; Dolby and the dotible-D symbol are trademarks of Do!by Laboratories Licensing corporation. Noise Reduction System manufactured under license from Dolby Laboratories Licensing Corporation. TRAPPING ADJUSTMENT Connection Diagram PRE AMP UNIT 0 0 TP3 TP4 I ,., osc I To Adju

9、st 1. Put the unit into the record mode. 2. Turn the BFC switch to position 2. Adjust asc so that the millivoltmeters show the smaJlest deflection. mV Meter Leh oo GND I!; : Rehm UO O I;. GND Fig.l 1 RadioFans.CN 收音机爱 好者资料库 AM I F ADJUSTMENT Connection Diagram Generator Scope Sweep center frequency

10、. 468kHz Input gain . O.3Vpp/cm TUNER UNIT To Adjust 1. Apply the minimum output signal enabling the Generator Scopes U curve to be checked from the Generator scope and adjust T10 so that the amplitude of the curve is brought to its maximum and the sym metry is made optimum. G 1 t n U I (GND .: I I

11、; R47 C0 Tl0 = GNO = ;,:;sK!gci: , t , ;Y t,;: / T 468kHz Generator Scope Terminatin9 Resistor Fig.2 2 RadioFans.CN 收音机爱 好者资料库 - , W,Y _)1 /1 SK:gg;,- 1: c ;. ,: t T: MW,lW TRACKING ADJUSTMENT Connection Diagram L4-1 I 0 -I mV Meter LI N E OUT TUNER UNIT TC7T8 Tq TC6 1 J $ = T0 Adjust (MW) L Termina

12、l R GNO Pin Plug 1 I I I I I Ose; los cope I I I 1 I I I I I I I I o 0 01 0 Fig.3 1. 2. 3. 4. 5. 6. - Frequency of SSG 515 kHz (400 Hz, 30% modulation) output level 60 dS/m. 1,650 kHz (400 Hz, 30% modulation) output level 60 dB/m. Variable Capacitor Position Maximum (turn the tuning knob countercloc

13、kwise until lowend.) Minimum (turn the tuning knob Clockwise until high end.) Repeat (1) and (2) alternately and adjust so that 515 1,650 kHz are raceived. 600 kHz (400 Hz. 30% modulation) output level 40 5OdB/m. I Tuned to 600 kHz. 1,450 kHz (400 Hz. 30% modulation) Tunedto 1,450kHz. output level 4

14、0 -50 dB/m. i Repeat (4) and (5) alternately and confirm that they are as specified. Adjusting Point TB TC7 L42 (MW coil of bar antennal TC4 i I Remarlcs 515 kHz can be received. 1,650 kHz can be raceived. ! Maximum output. Maximum output. Note: After adjusting L4-2 (MW coil of bar antennal, melt el

15、ectro wax soldering iran and fix it in position. To Adjust (LW) Variable Capacitor Position Adjusting Point Remarks Frequency of SSG I Maximum turn the tuning knob I 140 kHz can be 1- 140 kHz (400 Hz, 30% modulation) T9 Counterclockwise untillow end. I i received. output level 40 -60 d8/m. Minimum (

16、turn the tuning knob 300 kHz can ba 2. 300 kHz (400 Hz, 30% modulation) I TC6 Clockwise until high end.! i received. output level 40 -60 dB/m. Repeat (1) and (2) alternately and adjust so that 140 -300 kHz are received. 3. L4-1 (LW coil 4. 150 kHz 400 Hz, 30% modulation Tuned to 150 kHz. I I Maximum

17、 output. of bar antenna) output level 40 -60 dB/m. 5. 280 kHz (400 Hz, 30% mOlduationl Tuned to 280 kHz. TC3 ! Maximum output. output level 40 -50 dB/m. I -_. 6. Repeat (4) and (5) alternately and confirm that they are as specified. Note: After adjusting L4-1 (LW coil of bar antenna), melt electro w

18、ax with soldering iran and fix it in position. 3 SW TRACKING ADJUSTMENT Connection Diagram -, liiiii!iiliiii!fl Tes I u l l ,d l = ij ! NOTICE: = Select C1 so that total capacity of 80 pF is attained from the direction of the receiver jack. Z: Output impedance of the SSG. To Adjust mV Meter fl;,YJ,

19、R Pin Plu.g I GNO I j 0 I I I I I I OseitloscOlle I I 1 I I I I 1 I 1 I I I I I I I I I I I, 5?d 6 0 Fig.4 Frequency of SSG I Variable Capacitor Position Adjusting Point Rernarks . l 1. 5.8 MHz (400 Hz, 30% modulation) Maximum (turn the tuning knob T7 5.8 MHz can be output: level 40 60 dB/m. counter

20、clockwise until lowend.) received. 2. 18.5 MHz (400 Hz, 30% modulation) Minimum (turn the tuning knob 1 Te8 I 18.5 MHz can be output: level 40 60 dB/m. clockwise until high end.) Teceived. 3. Repeat (1) and (2) alternately and adiust: so that 5.8 18.5 MHz are received. 4. 7 MHz (400 Hz, 30% modulati

21、on) I l output: level 40 50 dB/m. I Tuned to 7 MHz. T6 Maximum output. 5. 17 MHz (400 HZ,30% modulation) I Tuned to 17 MHz. TC5 Maximum output. output: level 40 50 dB/m. . I 6. Repeat (4) and (5) alternately and confirm that they are as specified. FM IF ADJUSTMENT Connection Diagram liiiiiiiiiiiiill

22、td mV Meter -lINE OUT lTe.,m;nal R GND Pm Plug T3 fQ1 ., Center Meter ,; ,1 Bel = Fig.5 - ij 4 To Adjust 1. Adjust T3 so that noise level is highest at white noise. 2. Adjust T4 so that the center meter points to the center. FM TRACKING ADJUSTMENT Connection Diagram mV Meter iiili;iiilillifJd-:Ll;rn

23、:l Variable Capacitor Position Adjusting PointFrequency of FM SSG Remarks Maximum (turn the tuning knob 87.5 MHz can be 1. 87.5 MHz (400 Hz, 75 kHz deviation) T2 counterclockwise untillowend.l received.output leve! 20 60 dS (.V). Minimum (turn the tuning Imob 106 MHz can be 2. 106 MHz (400 Hz, 75 kH

24、z deviation) TC2 clockwise until high end.! received.output level 20 60 dS (.V). Repeat (1) and (2) alternately and adjust so that 87.5 106 MHz are received. 3. 4. 90 MHz (400 Hz, 75 kHz deviation) Tuned to 90 MHz. T1 Maximum output. output level 20 -30 dB (.V). 5. 104 MHz (400 Hz, 75 kHz deviation)

25、 Tuned to 104 MHz. TC1 Maximum output. output level 20 -30 dS ( .V). I 6. Repeat (4) and (51 alternately and adjust until tracking error disappears. TI TC2Tl0 I T2 11 = To Adjust TUNER UNIT R GND I Pi Pt-Ug-.r -li I I I I Oscillascope I I I I I o 0I I I I I I I I I Fig.6 5 FM IF FINAL ADJUSTMENT Con

26、nection Diagram TUNER UNIT l I Center Meter 0 I , SK:99 , ; 7 -+ FM MPX ADJUSTMENT Connection Diagram Stereo Modulator Modulation frequency . . . 1kHz Modulation ratio . 100% Pilot signal . 7.5kHz deviation Main signal . 67.5kHz deviation -l Oscilloscope = J Fig.8 To Adjust 1. Apply a signal of 82 M

27、Hz, 10dB from the FM SSG, 4. Check the separation. If the separation is not less than and tune the tuner to the signal. 25dB cut the body of R40. 2. Set the output of the FM SSG to 60 dB, and turn the 5. Set the output of the FM SSG to 26 dB. Then adjust modulation off. VR 1 so that the tuning indic

28、ator (greenllights. 3. Adjust VR2 so that the counter indicates within 20 Hz of 19 kHz. -.- LA3365 l-OUT STL-INQ. !IkHl CHECK 7 i , i ;,. ; 91(._909 w oc :t 0: !, :,-5 EXPLODED VIEW Parts List Cabinet (Page 48) NOTE Far your -Parts Stock Control, the fast moving items are indicated wHh the marks * *

29、 and *. *: GENERALL Y MOVES FASTER THAN*. This classification shall be adjusted by each distributor because it depends on model number, temperature, humidity, etc_ The IA mark found on same component parts indicates the importance of the safety factor of the part_ Therefore, when replacing, be sure

30、to use parts. of identical designation. Parts whose parts numbers are omitted are subject to being not supplied. SK-900/KC SK-909L/HT ,HB Mark No. Part No. Description Part No_ Description * 12. HXA739 Front Case Assy HXA-837 Front Case Assy 41. HXA760 Support Panel Unit HXA-844 Support Panel Unit *

31、 HAC-231 Knoh (BFC) 42. HAC233 Knob (BFCl * 71. HNS-473 Rear Case HNS-547 Rear Case * HAA198 Koob (BAND) Chassis (1) (Page 51) SK900/KC SK-909L/HT,HB Mark No. Part No. Description Part No. Description 8. 66. HXA-841 HXA-847 Back Plate Unit Tuning Assy HXA-842 Back Plate Unit HXA.791r.:e.JTuning ASSV

32、 HKA-ne;. Chassis (2) (Page 54) Mark No. Part No. SK900/KC Description Part No. SK-909L/HT,HB Description , - * * 1. 5. 7. 47. 54. HWHl17 HKP-107 BNC30Pl00FMC HSK119 HTT160 Main Amp Assy Socket Screw (Dial Pulley) Switch (BFC) Power Transformer HWH-118 HKP-l09 HBA-140 HTT-166 Main Amp Assy Socket Sc

33、rew (Dial Pulley) Deleted 220V Power Transformer 240V AC , 71. 75. 84. 85. 86. HNM-330 HNC-507 HTX-137 HCL-l10 HDE203 Shield Washer Antenna Unit Variable Capacitor Connector (7P) HNM-300 HBE-124 HTX-131 HCL-114 HDE-255 Shield Washer Aotenna Unit Variable Capacitor Connector !7P) /!I, * * 94. 95. 97.

34、 98. HWE-157 CNV-863 HKR-l03 HEK116 - Tuner Unit ACCap Fuse Holder Fuse,5A - HWE162 CNV-977 HKR-l02 HEK-115 HSH-123 Tuner Unit ACCap Fuse Holder Fuse,4A Switch (BFC) * * - - - - - - - - - BNC30P080FMC HSD-120 HSH-124 $crew (BFC) Holder (SFC) P.C.Board (BFC) Switch (Voltage Selector) Switch (BAND) Br

35、acket (BAND) 16 jL-/ -ll,J S9a9El : $ 0,4 , ;: Page 51 SK-900/KC SK-909L/HT,HB Assembly Unit Assembly Unit Amp Assy (HWX-367) LED Unit (Al Switch Unit MicAmpUnit Control Unit PreAmp Unit Amp Assy (HWX-368) LED Unit (A) Switch Unit MicAmpUnit Control Unit Pre Amp Unit BFC Switch Unit Packing Method (

36、Page 69) SK-900/KC SK-909l/HT,HB Mark No. PartNo_ Description Part No. Description ;:*,- SIEr-SElS - ! , 0 ,( j ,(: C _frV. Tuner Unit (HWE-162) RESISTORS MISCELLANEOUS Mark Part No. Symbol :- 1 :; SK-SOSa,ii;:, l -; ,;c , 7 ,% , t ,: BFC Switch Unit Mark Part No. Symbol StIQI$Y Of SCQ4!iP A A LJ B.

37、 _r, B 1H.II rot a05:2SAIOIS-Yg, 0201 206.201:sefH!i-r o, ! I L I -1 . ueQ.-2$4733 po 1 rT1-1(;) MSM4(jOIR$ ff. 1e.; tlS!,OHI$ 8: $14011IlS j cc QfO.!;I1:t!ieOO6OQ ;n n04.;a-IJ 1 . ,H,lo. e. o. Ij,#I_H,n.,_ U.O$. D L-futicrfo-fiswiTCirP._ C. aRD 213 SENSIHG UJilt D Fig.1O 1 2 3 4 5 6 131 L :tl(;S: ;

38、 iSKi:SDS!;,; b): 7:2J *,Q ;1 (5 1 2 3 4 5 6 CONNECTION DIAGRAM Q!: 2SCJ674-L Q2;: ,$(;1674-1. -Gr 2SC27SG-L Q3 1$,q: 2SC1G15-L 01 ZSC2787-t, Q4: 2SC1G75-t. er ,SC 27137 - L QG 1 7 ZSC461- 8 or 2SC380TM-O Q5,10-14: 2SCQ4S-P u lSC!SI5-GR A A TUNER UNIT (HWC;-162:) BFC SWITCH UNIT B B Prc Amp Unlt c c

39、 To Cormo:tetor J I 3 of LED Unit Q Conne:;tor .J 12 of Switeh p,C, Board. D D Q,IC AOJ TIO TC6 TCe TC7 TC5 TC2 TCI TC4 TO R40 VR213 VRI T4 T5 T7 Ta T9 T6 L4 TI T2 Fig_ 11 1 14 1 2 3 4 5 6 c L 1 2 3 4 5 6 CONNECTION DIAGRAM A QI: 25(;1674-1. Q2; 2SCIG74-L (Ir 2$C2786-L Q3,S)1l 2SCI$75-l,. or 2$C2787

40、-L Q4; 2SCt67S - L or 2SC 2791-I. Q 1 ?: 2S or 2SCISI5-GR TUNER UNIT (HWE-162) B o ROD ANTENNA A BFC SWITCH UNIT B Pre Amp Unit 10 Ccrmactor ,J 13 ot 1.ED Vfit Te CQlnector J 12: 01 Switeh p,C 6lsrd. o Q,IC 06 09 Q8 07 QIO Oll 014 013 QI2 IC3 01 03 Q2 IC2 Q5 04 ICI ADJ TIO TC6 TCS TC7 TC5 TC2 TC4 TC

41、3 R40 VR2 T3 VRI T4 T5 T7 T8 T9 T6 L4 T T2 Fig, 11 1 14 1 2 3 4 5 6 c ooJ (J) L N I) 01 01 (J) (J) Tl tf:i. w -, - 5 0 0 rn I 6 1 2 3 4 5 SCHEMATIC CIRCUIT DIAGRAM A 8 c o fIOOwrEUlA -. !SC:I$1I.-t, n . = CI67S1.qr2$e2181-I. _-.J 1 I n f xt-(IM a , ,a_1 r_ . . , P 1 QU,23Z$l.:IIiI$-Y ZSCQ4:S-P 1 8 1

42、 2 3 4 5 6 127 8 9 10 11 L 0CI,IO:aS;Z3ZOt.-1 er SC731T-Gft H;:r;KAnt,i 011-141 n433p Of SA!O!S-l Ci): SCn1.l-Y Itl,l:141311ZP 1 tsllM;2l,OI2$U,-O :,. VQUlM;:UlfI1 -.,. Cf02!/W(I:-Mtril OM-91Kjal)GR FVNCTWN SWITtH P.t.8OARO U3 S1Ofu Pl.Alt- IlE. , PAIISE n AUTOEDR $1-1: RSi-t3-3 A B o The i t .1t . ?M ! , 1 ! 1; 8 Ii , i -1-.-+-+-+-1. f-+-+-,-_ CAm () :r: m 3: :! .:. () () :xJ () C -I C ): t.i) :D s: IJ IJ 01 01 (j)