Alpine-CDA-7842-R-Service-Manual 电路图 维修手册.pdf

《Alpine-CDA-7842-R-Service-Manual 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Alpine-CDA-7842-R-Service-Manual 电路图 维修手册.pdf（76页珍藏版）》请在收音机爱好者资料库上搜索。

1、ff#blLPINE SERVICE UAL FM/MW/LW Compact Disc Receiver CO snuttle Controller illQ(IB DIGITAL AUDIO For the CD deck mechanism parts (DP23L05A) of this model, refer to the Service Manual DP-L SERIES ADDENDUM 1. LED indicates the alignment. 2. Diagnosis of automatic alignment. 3. LED indicates a failure

2、 item for easy failure analysis of servo circuitry. External View DT Mech. Servo Monitor r- 0 0 G) 0 G) L_ 6 _ 5 _ 3 _ 1 _ 2 _ 1 _ _ 0 0 0 0 0 0 Wire Yellow Blue Color Green Black Red Name Data CE Clock Ground Battery * For this digital servo LSI, no adjustment was made. The numbers of the automatic

3、 alignment sequence. II. Connection Points and Connection Method DPL Mechanism (OP23L05A) 6 5 3 1 2 1 4 NOTE : For the Test Points (T.P.503, 505, 507), 0 0 0 0 0 0 0 0 0 refer to the Parts Layout on P.W.Boards :I;! ii 0 ii ili Jl :l Gl -_._o I I -1 For 50 ohm AM Signal Generator Figure 2 Antenna Rec

4、eptacle ACVTVM FM Dummy Antenna T.P.003 t- T.P.510 L=G=N=D5-,1-.l-.c Unit Under Test * 2 seconds Pull-Down Figure3 Antenna Receptacle DC Volt Meter FM Dummy Antenna T.P.001 D 0 0 _ +-+O 0 0 0 L=T=P.=002:i.J-1-, Unit Under Test - Antenna Receptacle Figure4 Distortion Meter FM Dummy Antenna FM Signal

5、Generator FM Dummy Antenna Antenna Receptacle -9- GND Unit Under Test Figure 5 AC VTVM t-_ 1 o,.kohm 11-,(11 Pre Output -,-. GND 0 Unit Under Test Figure! CDA-7944R/ CDA-7842R I CDA-7944R/ CDA-7842R 0 0 AM Signal Generator (3) Control Settings Power Switch Fader Control Balance Control Treble Contro

6、l (4) Adjustment Procedures Step Description Connection Signal Meter 1 Auto Adjustment Figure 3 IF 2 Adjustment Figure 4 Distortion 3 Adjustment Figure 5 IF 4 Figure4 Confirmation 5 Separation Figure 6 Adjustment AM Seek Stop 6 Auto Figure 7 Adjustment Antenna Receptacle AC VTVM AM Dummy Antenna ON

7、Center Position Center Position Center Position T.P.003 1- T.P.510 GND Unit Under Test * 2 seconds Pull-Down Figure 7 Bass Control . . . . . . . . . . . . . . . . . . . . . . . Center Position Band Switch BBE Switch Others Test Point/ . FM/AM (MW) OFF OFF Signal Generator Dial Control P.W.Board Adju

8、stment Coordinates T.P.003 Auto Adjustment : After setting up of 98.1 MHz, 52dB (2-C) (Mod. OFF) 98.1MHz T.P.510 Signal Genarator, short GND and (2-C) T.P.510 (Pull-Down) for 2 seconds. T.P.001 98.1MHz, 72dB (1-C) (Mod. 400Hz, 98.1MHz T.P.002 Adjust L2009 to 0 1 00mV. Dev. 40kHz) (1-C) 98.1 MHz, 72d

9、8 (Mod. 400Hz, 98.1MHz Pre Output Adjust L2010 to less than 0.7%. Dev. 40kHz) T.P.001 Confirm T.P.001 and T.P.002 output 98.1 MHz, 72dB (1-C) voltage is 0100mV. (Mod. 400Hz, 98.1MHz Dev. 40kHz) T.P.002 (NG : Proceed same adjustment (1-C) under Step 2.) 98.1 MHz, 72dB Adjust VR201 to for Reh output t

10、o be (Mod. 1 kHz, 98.1MHz Pre Output minimum, and confirm Leh and Reh Dev. 36kHz, output level difference is more than Stereo, Leh only) 20d8. T.P.003 Auto Adjustment : 999kHz,33dB (2-C) After setting up of Signal Genarator, 999kHz (Mod. OFF) T.P.510 short GND and T.P.510 (Pull-Down) (2-C) for 2 sec

11、onds. -10- Adjustment Locations L2010 L2009 D D NOTE : For the Test Points (T.P.001-003, 510) and Adjustment Parts (VR201 ), refer to the Parts Layout on PW.Boards and Wiring Diagram. -11 - CDA-7944R/ CDA-7842R z 0 -l m 0 Tl Q () 0 1 -.J (0 .jS. .jS. lJ :s: 0 C. 0 :J t Tl 0 I! JIC120 () 0 . 1 I) -.J

12、 II Optical CD D-OUT I .jS. I) lJ :s: 0 C. 0 :J 0 (D iil () 0 3 3 0 ? ET001 Assy.,Anlenna Receptacle FM/MW/LW Tuner unil FE001) !W_ (AUDIO SELECTOR . ET2012 t-1-_.,o FRONT OUT A IC311, 315 ET201-1 1 1 o REAR OUT J o SUBW Power IC A IC301 ET2021 ET801 Power Supply Coonec1or (0) Speaker Output ) I - -

13、 -iET202-2 ii: Cl ;i: i i Indicator REMOTE CONTROL RECEIVER IC402 IC901, 902 0901-903 DC-DC CONVERTER +B/B m - 0 () C - D) cc . D) 3 00 cc ) . ii ,_,.,. :u CDA-7944R/ CDA-7842R Tuner Schematic Diagram I I I I I I I I I I I .21 ! : v-,cv ,. I I I I I I I I I I I I I I I I I I ._. ._.,a 11VI . v, - -7

14、 I I I I -_-_-_-_-_-_:-_-_-_-_-_-_-_-_-_-_-_-_-_-_:-_-_-_-_-_-_-_-_-_-_-_-_:-_-_-_-_-_-_-_-_-_-_-_+ . -_-_-_-_-_-_ . +-_r,.-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ . +-+1-,-+-_-_-_-_-_-_-_-_-_-_-_:-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- : J CHZ7 . -+-,11-1-. R217J .J.n O . -, 1= CHlt ii , l ,. -n (2t12 . C2HO . .,

15、k:rn . i .,. ,.,. ._, Cf, I 121l3 19 E1112 . 7u !1H1 -47u a 1112127 . :. :For CDA-7944R .Jiodei : For CDA-7B42R i:/lodei Others Common. Orange Color Pattern: Component Side Pattern Blue Color Pattern : Foil Side Pattern I G I 1 2 4 5 I CDA-7944R/ CDA-7842R COA-7944R/ CDA-7842R Parts Layout on PuW,.

16、Boards and Wiring Diagram (2/4) Main P. W.Board (Foil Side View) ., 1C321 5 Ct A I B -17- I C D I E I F -18- D-OUT P.W.Board ( View) I o-our I L: I ,.J 1 -,:01 I 7 l r : For COA.-7842.8 iAoaet Others: Cornmon. Orange Color Pattern: Component Side Pattern Blue Color Pattern : Foil Side Pattern I G I

17、1 2 3 4 5 Parts Layout on PW-Boards and Wiring Diagram (3/4) SW401., t-SW402 j ia 8; ui 03= ; , -: I ., i, ;.; . ,: -409 . - Front P.W.Board (Component Side View) Front Board ( ii Side View) :otcfil :I: ., : _, - 01.-_ . . . -. ;ore lro -.Ju._ _ _J,.L.:,;._.:.:;:;,:_;_:.:.:.:1.J.:.:.:.:.:.:.:.:.:.:;

18、:;:;:.:.:.:1.J:.:.:.:.:.:.:;_:_:.:.: _ Ll.:.,_;.;._.:.,_ _ :.;.:.:,:.;.:.L-r-=.:;=.:.:;., Orange Color Pattern : Component Side Pattern Blue Color Pattern : Foil Side Pattern A I B -19- I C I D I E I F -20- I G I I CDA-7944R/ CDA-7842R CDA-7944R/ GDA-7842R Parts Layout on P.W Boards and Wiring Diagr

19、am (4/4) 1 D-OUT P.W.Board (0) (Component Side View) 2 4 5 A I B -21 - I C DP-Main P.W.Board (Foil Side View) . . . . . - -, _ -,- _ ,. _ , - D I E I S1vitch I Motor P.W.Board SW7304 _/o- SW1303 Assy . Motor-Loaa M73G1 Pick-Up HD1201 I Side View) SVV1302 I t1cl,_.:._ ., : FEfJfll , f/LW Tner Uni I,

20、ll7 1 ,i l! l f . AM ANT M ANT GND (RF) L/0 FM+B-(0. 5V) AM+B (8. 5V) DEV DET. VCC (Co.18. 3V) AMD/IFBW FM IF VT SEEK REQ. IF COUNT, AM ST Al DET. SD V1h SD 5-METER FM Demod. OVT MB4RS03S ;:_.,:mJ 30- i! L ._._.c;_I- - 40-7 Z0115 BK.;, 25HM1 ri2 I 1i!O- l0rl,.ij-+-, 11D-1-l-+.-.-.5-27-,+-jl-:;J2 120

21、- 220K I R26 1D-ll-l-+-4 I- f-l 14 C01i16 6Brlr.lP 100P I ,- 1610-1-+-1 17 To M111.1 n P W Board 4/4) :. RDS OUT GlO (AF) BW T. C. V (AFC) 100-l-+-+-t-lf-+-t+H-+- 1 RVl72 Z 2M ,- Z1 D-11-,-, I EIH7 :.:5111 TPl!ll!IZ 0V (REF) R013 s. e1-1-51-1-l-l-i-l-i-i-1 =-5 /LOCK 14 14 LOAD-FVtO tC-1-l-+-H-+-+-+-

22、+-;-1 =-, -J .,_,_,f-,+-:+-+-+-_+-1-+-+-_-_-_-_+-c+-,tj !rt= =-t-i := o-, l-l-l-l-1-l-1-+-; .=-, -J BUS-1 ! :,:.J-f-+-H-1-1-l-=-.I S-0 13 :1 I LIMT SW !I ., i : ,+-1-1-+-+-+-+-+-:;C-J II SWA 1 2 RESET -,- ll! : - I I t;u ) ICD AUDIOB! I 1 0102 ,-+- FMCZ l-CONT B -23- I C I R505 22K R551 11K R5114 D

23、47f!K CD 16 / OR5iH 22K l b.ROll9 22K _J :; . i I E To Marn P W Board 214) 11419 1. ,-2w CB4tl1 -7 I - ! -i,-i!- i l I r%0TC114 .o?:., o 0505 2SA 11)57K 4-1-1-$ R54! a:N 1iait REMOTE CONTROL INTERFACE I ACC DEi ECfORI 0515 W-+-l-l-l-l-+-1-1-l-l-+-l.-.,cz lRl I I I ie1 0511 U OTC114TK I p ., V C8fl2

24、DTC143XK EE!t12 47/18 j 61TT Ji:-ETJR I I ( ,c,., i 11.!lll 4 71-1/4 , . , 1K-l/4 0Bfl1 DTC12! BwZZE 0-11,1:s: I_ - - - _ _J I F -24- I G I H J 10 ii:;:;, R7 47tll( e , , e I I I II II I mmmmmmmmmm swromrnswwmrn ; u u To Mal n P W. Soard !2/4) I l, l I I 1 l:;l:!ilE); 0 i5 lEii; le !ll/2 il! 8 i:j ,

25、_ 61 RE:MOCON -O ; w in 5 BUCK 40f-+-+-+-+-+-+-+-+-+-+-+-1-+- 0 . 4C04FM6TI. BBBUS-OUT ._,-+-+-+-1 87 SW-2 LS I -RS T 5 Sf-+-+-._.-+-1-f-+- L ! MI T-SW 34 f-+-+-._.-+-1-f-+-+ ? -+-+-+-+- 71 GND ., p . I I J I ilfi rl! I -72NC -+-+-+-+- 7 3 GND rl-+-H-1 74 AVOD H-, 75 VDO -+-+-i-+ - 76 Dig-Out SEL 77

26、 CNTLZ r+-+-t-f-t-1 7 B Sub -W SEL i ll 0 OR5iH 22K 6.0ll22K I I osu : 1l :1 JC5 - EBeJ2 RfMOTE CONTROL lNTFRFACE 47/16 z 7g.2,/4 5 . T7 Rllll L.J.-N-5!/./cen !2/2) 7!i I r-s I ACC DETECTOR From Front P W .j 5V 5 3.S-OV/OV 67 NC 6 1.s-a.sv, av BBE(+1-+6)/0FF 58 SV/OV 7-10 5V 59 4.98V/0V 11-17 PS 80

27、5.06V 111-20 av 61 4.69V 21,22 PS/SV SUB-WON/OFF 62 4.79V Zl SV/OV POWER ON/ CD P.AY 63 4.77V 24 NC 64 PS/OV 25,26 0V 66 0V 14.8:N 27-29 NC 66 PS/OV :I) 0V/4.83V DISC IN/OUT 67 0V/4.83V 31 0V/4.83V CD P.AY / DISC LOAD, EJECT 68 5.07V 32 0V/5.04V POWER ON/ CD P.AY 69, 70 osc 33 av 71 av 34 0V/4.66V 7

28、2 NC 35 0V/5.06V POWER ON/ CD P.AY 73 av 36-41 OV/PS 74,75 5.08V 42 0V/5.1V POWER ON/ CD PAUSE 01 sv 76 43 SV/OV MUTE ON/OFF LI.I av 44 NC n 5.09V 45 5V 78 5.07V 46 PS/OV BUZZER ON/ OFF 79 4.91V 47-50 NC 8) u,.;v 51 5V B MODE E C B 4.8V/0V LOCAL/ DX SEEK 0/SIIT 0V av 5V SV/OV SEEK/ POWER ON 0511 ov

29、0V 4.7V 5.SV 0512 4.7V 4.7V ov 5V 0601 OV/OV 14V/PS OV/OV 0V 0801 14V 14V 13.1V ov 0802 av 0V 5V 5.04V 0806 1.SV 14.SV 9.8V 1.89V 0831 10.SV 14V 11V 3 4 5 MODE DIM ON/OFF IN-INT ON/OFF CHG/ POWER ON CDA-7944R/ CDA-7842R CD PLAY/ DISC LOAD, EJECT CHG/POWER ON CD PLAY/ DISC LOAD, EJECT MODE POWER ON/

30、BUZZER G D s 0020 NC 4.97V/0V 5.09V / 5.09V 8ZN/0.97V OV/OV FM/MW, LW Oo804 9.24V 9.24V 14.28V 0041 NC 3.SV/1.SV 5V ov ov MW, LW/OTHERS 0101 NC 1.4V/ 1.2V 1.6V/0V 14.2V/0V OV/OV CO/EJECT 0102 NC OV/SV SV/OV OV/SV SV/SV CD/EJECT co110 NC 4.94V / 4.94V s.rrrv I 5.07V 5.04V/0V OVIOV CD P.AY I POWER ON

31、0513 NC 5V sv sv ov OIKXl NC 13.8V 14.1V 4.3V ov 0832 NC 14V 14.2V 5.2V ov Measuring Conditions Power Supply Voltage : DC14.4V Measuring Meter : Digital Multi Voltmeter Measuring Point Reference : Between Ground Measuring Conditions : Power ON, FM 98.1 MHz, No Modulation NOTE O: For CDA-7944R Model

32、Only, t:,.: For CDA-7842R Model Only, Others : Common. I I NOTE: 1. All resistance values are in ohms. K = 1,000 1 2. All capacitance values are in microfarads. P = _,1-,O,.,OO,O,._0- 0- J -25-I K I CDA-7944R/ CDA-7842R 1 2 3 4 5 Schematic Diagram (2/6) Mal ft P, W. flou d IZ/4) E212 llt w- - I :! :

33、! i i , iii Iii I . H IQ ; :! I I I I I I I : :! I i- : i ; - ! !: I I I :; - : a 151 I I I I I I I R2tl1 1K I I I 2112 1K I I I I I I ; ; I I i I I I l I I ; i 7 - L. I I IC852 11/2 .-+-H-4-4t-.al!-.Jll-l-+-+-+-+-+-l-+-+-1_ -4_. NJN291!MM l._CB512/2) N.M2984M J ,-l-+-1-+4-, ! ST! r1H+-!-+-H-l-+-!Y

34、v 01 I C213 ._. _ ,_,_. - SA45HF 2/Z) I BBE LOW CONTROL I l I II 111 1111111 To MIi in P. Boord 14/4) A I B -2s- I C CDA-7944R/ CDA-7842R CDA-7944R/ CDA-7842R -1 I S 111- ,;.;. . -I ,_ . - 1 -j ; i i ! I I i I I I C L) :- Q21!13 Jam ore, Z4K / I . ill E. :;:. UJ cg,.: 04 Q . ,J a I; j rt - uJ u a a.

35、 l To M11 n P. W. Board (1/4-1 I D 0 . n n N N w w .,. . - w,. .,; I , . : . :l! aL 5 : , I rc212 TEA8324T 1 SUIJ-W. E-VOL E i I : a E218 1 rv,e i I ICZ4111/ZJ - l r XRA458GIF RZ49 228-1/4 E271 OZ71 zso, sze R273 IH-1/4 1fl/1B l?:1 A.275 r;,; t:. 5.1K l!j .1-4-+- _ _. IC241 (2/21 XRA45811F g i r.l-,

36、-+- E219 . .- R2l8 .J-+N- 1fll18 I E213 2, Z/01 j E214 2-:V!Jlil E,10 2. 2/!:il EZ18 2-11 I I. N ill WSI 04 , l ! I I , : I -21-F R24B m -t-il l- c24z 39P I 5.iK 1SSJl5S x:, 5 llZ!JD ZZIH/4 RZ59 - 2211-1/4 :I E272 1n,1 i m l . ffii 4 0 3 I , ih- ; I ; I i I I i I : 0 3 ; I I I I I I I I ET: I Auv.,

37、RCt I I I I I C Isl IA/- - t I I I ,. I I Assv., RCJ I I I I I I I I I I I I I I CBID1 r-1 .a ,. - - - - - - - 6 c:_ I 5 -R I 4 p_ . , . 5 P-CONT r 1 4V 2 A.A.TT 1 F-GNO PWR-IC /CC-N BATT DllM:11. - ICC IN-INT ET Ally H CDA7944R/ CDA-7842R CDA-7944R/ CDA-7842R -7 0 o c s eo:t , .;-!I, ;.,. , , :I L

38、., l! 1: LI D I I ! I I ,k i I I E I I i I I ! l E218 1rv,e E219 ,rv,e I C2417 R243 7. SK 1 _ . A247 . V; 211( i 5 IC241 (1/2) -! I .,. XRA4591F .-+-_._.,._,_. IC241 (2/21 XRA4SBIF . ., -f-1 I- C242 , . C251 . ,-J-:l 6. 2K-1/4 . -le R25 _ I ,ac-11 ii I -. OJM4t.f, t-f-+-+- - 6.XRMSBfJF N /_ (C251 (2

39、12) i-h - a-1.oh YDD L._-_-:f1;il-.:,r-1-tJ,.-f-it-t-+r-1+-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-+d.t-J_-_-_+-l-1-:?, . T IIU5- PWR-JC N:C-fN . TT DlliM:R - ICC -IN-INT I I I I I I I I I I I I I I I I I I _ I H , I I IC201 IC202 IC203 1-7 4.4V 1 PS 15 9V 1 1.5-3.SV / 8.2V 8 4.5V 2 0V 16 4.SV 2 1.5-3.S

40、V / 0V 9 ov 3-7 4.5V 17 NC 3 1.5-32/0V 10 4.4V MW,LW 8 NC 18-22 4.SV 4 0V 11 4.4V 9 4.5V 23 9V 5 0-3.8V/OV 12 4.5V 10-14 NC 24 52V 6, 7 1.8-82V / 82/ 13, 14 NC 8 9V 15, 16 4SV 17 5.1V MUTE ON/OFF 18, 19 PS 3l ov 21 8.93V 22-25 4V 26-28 4$1/ IC221 IC241 IC261 1,2 4.SV 1-3 0V 1-3 0V 3 4V/6SV BBEON/OFF

41、 4 -8.83V 4 -8.84V 4 3.SV 5-7 av 5-7 0V 5 4V/6SV BBEON/OFF 8 9.13V 8 9.14V 6 av 7 1.8-8.2V/ 82/ BBEON (+1-+6)/OFF 8 1.5-3.SV / 82/ BBE ON (+1-+6) /OFF IC251 IC852 9 4V 1-3 av 1-3 4$1/ 10 4.5V/6SV BBEON/OFF 4 -8.83V 4 0V 11-14 4.5V 5-7 ov 5-7 4$1/ 15 9V 8 9.12V 8 IV 16-18 4.SV 19 9V 3-24 4.5V E C B MODE 0202 aV/OV PS/0V SV/0V SEEK/ POWER ON 0203 0V/0V OV/aV 0V/2.7V MUTE ON/OFF 0271 aV/0V aV/0V a.7V/OV MUTE ON/OFF 0272 0V/0V 0V/0V 0.7V/aV MUTE ON/OFF 0281 aV/aV 0V/aV 0.7V/OV MUTE ON/OFF 0282 aV/0V aV/0V 0.7V/0V MUTE ON/OFF 0291 aV/0V O