GrundigRRCD3720DEC 维修电路图、原理图.pdf

《GrundigRRCD3720DEC 维修电路图、原理图.pdf》由会员分享，可在线阅读，更多相关《GrundigRRCD3720DEC 维修电路图、原理图.pdf（21页珍藏版）》请在收音机爱好者资料库上搜索。

1、Service Document Es gelten die Vorschriften und Sicherheitshinweise gem dem Service Manual Sicherheit“, Materialnum- mer 720108000001, sowie zustzlich die eventuell abweichenden, landesspezifischen Vorschriften! The regulations and safety instructions shall be valid as provided by the Safety“ Servic

2、e Manual, part number 720108000001, as well as the respective national deviations. S S Service Manual Sicherheit Safety Materialnr./Part No. 720108000001 RRCD 3720 DEC GDS0900 Dieses Service Dokument ist nur in Datenform verfgbar This Service Document is only available as data nderungen vorbehalten/

3、Subject to alteration Made by GRUNDIG in Germany TCC 0208 HH RRCD 3720 DEC RRCD 3720 DEC RRCD 3720 DEC RRCD 3720 DEC RRCD 3720 DEC RRCD 3720 DEC RRCD 3720 DEC RRCD 3720 DEC RRCD 3720 DEC RRCD 3720 DEC L.CH OUT L-CH R-CH GND COMMAN R.CH OUT 7V Q401 9014C 1 2 3 4 CN401 16 17 18 SW401F PS-82D06 19 20 2

4、1 SW401G PS-82D06 7 8 9 SW401C PS-82D06 3 2 1 4 6 7 L401 9170 10 11 12 SW401D PS-82D06 22 23 24 SW401H PS-82D06 D401 1N4148 13 14 15 SW401E PS-82D06 C402 10n + C404 47u C405 10n D402 1N4148 4 5 6 SW401B PS-82D06 + C401 100u C406 1n8(m) R450 3K9 R453 120K R454 1K R455 820K R456 82 R401 120 R405 1M +

5、C403 47u R402 470R410 10K R411 47K + C410 1u R412 680K Q402 9014C R414 4K7 + C411 1u R413 470 R420 470 R421 10K R423 680K Q403 9014C R422 47K R424 4K7 + C420 1u R441 68K R431 68K Q404 9014C Q405 9014C R404 10K R403 10K R442 6K8 R432 6K8 C413 18n(m) C424 18n(m) + C41447u + C423 47u R444 82K R434 82K

6、+C422 1u + C412 1u R445 10K R435 10K C425 1n5 C415 1n5 C416 3n9(M) C426 3n9(M) + C421 1u + C407 22u R415 180K R425 180K R436 6K8 R446 6K8 R452 100 R430 12K R440 12K NF1 1 IN1 2 O1 3 G 4 ALC 5 VCC 6 O2 7 IN2 8 NF2 9 IC401 LS22241 C427 1n5 C417 1n5 R443 68 R433 68 R426 5K6 R416 5K6 SYNC L-OUT GND R-OU

7、T L-REC R-REC GND REC. 6V5 REC GND 1 2 CN403 C409 180P C408 180P C418 2n C419 2n TO R/P HEAD TO MAIN PCB RRCD3720 TAPE SECTION 1 2 3 4 5 6 7 8 CN402 C429 1n C428 1n RRCD 3720 DEC RRCD 3720 DEC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 IC501 TB2132FN C513 30P C5

8、12 30P C511 30P L506 4.5X4T5 ANT FM + C514 22u C515 100n + C516 220u 4 6 3 2 1 T501 858290CF504 L10.7S CF501 L10.7S CF502 SFU450B + C517 10u C518 330P CF503 JT10.7MG-E C519 22n + C5200.1u R507 3K3 C521 100n X501 75kHz C528 20P C529 20P C523 10n(m) R506 150 R509 4K7 R508 4K7 C522 10n(m) C524 1n5(m) C

9、525 1n5(m) + C527 1u + C526 1u R511 6K8 R510 6K8 R512 22K R513 22K L503 70:30T TD503 SVC348 TC503 T10P L502OP TC502 OP C505 OP TD502 OP C504 OP L501 4.5X3T5 TC501 10P C502 10P TD501 SVC201 C501 1n D501 L4148 D502 L4148 C503 100n R501 47K R502 OP R503 47K L504 4.5X2T5 TD504 SVC201 R504 47K C506 22P 3

10、 1 6 4 L505 369SO C509 330P C508 10P C510 6P C54210n(II) R505 100K C530 100n CLK DA CE ST L508 100uH R520 5K6 R521 5K6 R514 10 Q503 9014/C Q504 9014/C R524 2K2 R525 220 C540 100n + C539 10u R523 390 R522 22K 4 6 3 2 1 T502 7076A C535 15P D504 1N4148 R515 4K7 + C534 47u Q501 9014/C Q502 9014/C C537 2

11、0P C532 20n + C531 10u L507 100uH C53622p R517 68K R519 15K R518 820K R516 680 RLLPF2 GND C541 10n(II) D503 1N4148 R526 2K7 R527 150 1 2 3 4 CN502 C544 100u C543 10n(II) ZD501 3V3 L.CH GND R.CH 6.5V 1 2 3 4 5 CN501 C538 10n(II) R530 000 Q505 9018/F C545 1n R531 120K R532 68 C546 100n 1 2 CN503A 2PIN

12、S R533 100 JP504 22 R332 10 TUNER R534 10 C547 1n T P T P T P T P T P T P 1 2 3 6 4 5 1 2 CN504 2PINS S501 FUNCTION S502 VOL-DN S503 VOL-UP R540 1K5 R541 1K8 R542 000 T P7 RRCD 3720 DEC RRCD 3720 DEC RRCD 3720 DEC RRCD 3720 DEC OITARAPERP LARENEGDERIUQER STNEMURTSNIN sno i ac i f i ceps ot gn i droc

13、ca CA ro CD ,egat l ov ecruos kcehC .1rotareneG l ang iS .1 deng i l a gn i eb dnab ot hc t iws no i t cnuf teS .2rotareneG l ang iS MF .2 3. FM/AM IF Sweep Generator (10.7 MHz for FM)3. Signal input should be kept as low as possible to avoid AGC and AFC function : no i ta l udom dradnatS .4MVTV .4A

14、M 1 KHz 30% mod 5. OscilloscopeFM 1 KHz 22.5 KHz dev 6. Frequency counter 7. Regulated DC power supply AM IF ALIGNMENT STEP SIGNAL SOURCE (AM RF Gen.) CONNECT TO SET SIGNAL TO ALIGNMENT INDICATOR (Oscilloscope, VTVM) CONNECT TO SET RADIO DIAL TO ADJUSTADJUST FORREMARKS TP4 or TP5 ta l or tno c emu l

15、 oVte i uQl an imret tuptuo ro t c eteD z HK054no i ta i dar dradnat s A no i t i sop .n immum i x aM105Ttn i oP)6PT( dnuorg dna poo l1 2 Repeat step 1 for max. output FM IF ALIGNMENT This model requires no FM IF alignment as the IF is fixed by ceramic filter (CF501&CF504) and discriminator CF503. P

16、lease take note that correct type and same color dot of ceramic filter is used in servicing, diff color dot of ceramic filter may cause worse IF S curve characteristic and distortion. Connect IF genescope output terminal to TP4 OR TP5 & TP6 (GND) in series with a 1000Pf capacitor, connect scope inpu

17、t terminal to TP3 & TP6 (GND), then the IF characteristic curve can be observed. A L I G N M E N T P R O C E D U R E MODEL : RRCD 3720 MP3 RRCD 3720 DEC A L I G N M E N T P R O C E D U R E MODEL : RRCD 3720 MP3 STEP SIGNAL SOURCE (FM Signal Gen.) CONNECT TO SET SIGNAL TO ALIGNMENT INDICATOR (Oscillo

18、scope, VTVM) CONNECT TO SET RADIO DIAL TO ADJUSTADJUST FORREMARKS L504 (Osc. Coil) CD l at i g iD V3.0 V8 CDro hc ter t szHM 801zHM 801 1s i retem t l oVezeeuqs)dne t sehg iH()deta l udom( Connected to V3.0 V2 CDANzHM 5.78s l an imreTzHM 5.782PT & 1PTTP506 and gnd 2through matching network(modulated

19、)across speaker (Lowes end) ) l i oc FR ( 105Ll i oc ec i ovyrassecen f i 3emu l oVro hc ter t szHM 88zHM 88 (modulated)squeezeMaximumcontrol at 106 MHzno i t i sop . xam105 CT 4) remmi r t FR( zHM 601)deta l udom( 5 Repeat steps 3 and 4 as necessary to minimize tracking error and also steps 1 and 2

20、 if necessary AM RF ALIGNMENT STEP SIGNAL SOURCE (AM Signal Gen.) CONNECT TO SET SIGNAL TO ALIGNMENT INDICATOR (Oscilloscope, VTVM) CONNECT TO SET RADIO DIAL TO ADJUSTADJUST FORREMARKS CD l at i g iD505 LzHK 2261zHK 2261 1s i retem t l oV V3.0 V8 CD) l i oC. csO()dne t sehg iH()deta l udom( zHK 135z

21、HK 135Connected to 2 V3.0 V2 CDAN)dne sewoL(rekaeps ssorcA)deta l udom(no i ta i dar dradnat s ATP 5 and gnd emu l oV305 Ll i oc ec i ovzHK 855. tna poo l 3ta l or tnocmumi xaM) l i oc . tna(zHK 855)deta l udom( 1440 KHzno i t i sop . xam305 CT 4 ) r emmi r t . tna(zHK 0441)deta l udom( 5 Repeat ste

22、ps 3 and 4 as necessary to minimize tracking error and also steps 1 and 2 if necessary Applicable unit : 1This model is using CD drive unit No. SANYO DA11B3N 2The alignment for CD section is fully automatic and no adjustment is reguired FM RF ALIGNMENT ALIGNMENT PROCEDURE FOR CD SECTION RRCD 3720 DE

23、C 1 ) Check source voltage, DC or AC according to specifications .2 ) Set function switch to Tape being aligned . A ) MEASURING INSTRUMENTS REQUIRED FOR TAPE B ) EQUIPMENTS REQUESTED FOR AC BIAS FREQUENCY / CURRENT ADJUSTMENT : SPEED AND HEAD AZIMUTH ADJUSTMENT. ( 1 ) TAPE SPEED ADJUST MTT-111 (3000

24、 Hz) TEST AC BIAS FREQUENCY ALIGNMENT : Note :The test unit should be keep in recording mode and added two resistors Ra & Rb as shown in the Fig. 2 before alignment. be sure to delete the both resistors Ra & Rb after alignment completed. tnioP tseT . TNEMTSUJDA HTUMIZA DAEH ) 2 ( AdjustFrequencyFreq

25、uency Observe atObserve 2.1 - Connect the equipments as shown in the Fig. 1.at Beat 0Beat 1Beat 2Beat 0Beat 1Beat 2 (The Both Speakers loading Are Required) Resistor 2.2 - Insert a test tape ( 10 KHz : MTT-114 ) into deck.Ra or RbL20160KHz 0.3KHz 2.3 - Press PLAY and set VOLUME at reference output.

26、2.4 - Adjust the azimuth adjustment screw for the max. & balance ch. output on both ch. of oscilloscope. 2.5 - Secure above screw with glue after adj. completed. A L I G N M E N T P R O C E D U R E MODEL : RRCD 3720 MP3 GENERAL PREPARATION - = TO CASS PCB CN401 60KHz 1 Ra 10 ohm Rb 10 ohm 4 INPUT OU

27、TPUT VTVM FREQUENCY COUNTER FIG.2 R/P HEAD MOTOR SPEAKER TERMINALS AZIMUTH ADJ. SCREW TAPE IS REQUIRED R/P HEAD OSCILLOSCOPE CH. 2 3000 Hz CH. 1 FREQUENCY COUNTER FIG.1 RRCD 3720 DEC GRUNDIG ServiceE - 1 Ersatzteilliste Spare Parts List RRCD 3720 DEC AUDIO BESTELL-NR. / ORDER NO.: GDS0900 ? 1 / 2008

28、 POS. NR. ABB.MATERIAL-NR.ANZ.BEZEICHNUNGDESCRIPTION POS. NO. FIG.PART NUMBER QTY. d GDS0900RRCD 3720 DEC BLACKRRCD 3720 DEC BLACK KEIN E-TEILNO SPARE PART 0001.000759540384000BATTERIEFACHDECKEL RUECKTEILBATTERY DOOR BACK CABINET 0002.000759540384300STABANTENNEROD ANTENNA 0003.000759540384100BATTERI

29、EFACHDECKEL BACK UPBATTERY DOOR BACK BACK UP 0010.000720117142900FERNBEDIENUNGREMOTE CONTROL 0011.000759540384200BATTERIEFACHDECKEL FERNBEDIENUNG BATTERY DOOR REMOTE CONTROL DIE BEDIENUNGSANLEITUNG KOENNENTHE INSTRUCTION MANUAL CAN BE SIE IM INTERNET UNTER FOLGENDERDOWNLOADED FROM THE INTERNET ADRES

30、SE ABRUFEN: WWW.GRUNDIG.DEUNDER THE FOLLOWING ADDRESS: MENU: DOWNLOADSWWW.GRUNDIG.DE MENU: DOWNLOADS HINWEIS!NOTE! IM DEFEKTFALL NEHMEN SIEIN THE EVENT OF A DEFECTIVE KONTAKT MIT UNSERERPLEASE CONTACT YOUR SERVICE HOTLINE AUF NDERUNGEN VORBEHALTEN / SUBJECT TO ALTERATION ( ! ) ! Es gelten die Vorsch

31、riften und Sicherheitshinweise gem dem Service Manual Sicherheit, Mat.-Num- mer 720108000001, sowie zustzlich die eventuell ab- weichenden, landesspezifischen Vorschriften! The regulations and safety instructions shall be valid as provided by the Safety Service Manual, part number 720108000001, as well as the respective national deviations.