Grundig-RRCD2420MP3-tr-sm维修电路原理图.pdf

Service Document Exchange Set Es gelten die Vorschriften und Sicherheitshinweise gem dem Service Manual Sicherheit, Material- nummer 720108000001, sowie zustzlich die even- tuell abweichenden, landesspezifischen Vorschrif- ten! 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. S S Service Manual Sicherheit Safety Materialnr./Part No. 720108000001 ? RRCD 2420 MP3 Dieses Service Dokument ist nur in Datenform verfgbar This Service Document is only available as data nderungen vorbehalten/Subject to alteration Made by GRUNDIG in Germany HS-41 0305 RadioFans.CN 收音机爱 好者资料库 RRCD 2420 MP3? INSTRUMENTS REQUIREDGENERAL PREPARATION 1. Signal Generator1. Check source voltage, DC or AC according to specificaions 2. FM Signal Generator2. Set function switch to band being aligned 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 4. VTVM4. Standard modulation : AM 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 TP3 A standard radiation450KHz Detector output terminalQuietVolume control at 1loop and ground (TP4)PointT601Maximummin. position 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 and discriminator CF502 or CF503 & CF505. Please 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 TP3 & TP4 (GND) in series with a 1000Pf capacitor, connect scope input terminal to TP1 & TP2 (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 STEP SIGNAL SOURCE (FM Signal Gen.) CONNECT TO SET SIGNAL TO ALIGNMENT INDICATOR (Oscilloscope, VTVM) CONNECT TO SET RADIO DIAL TO ADJUSTADJUST FORREMARKS 87.5 MHz87.5 MHzNANADigital DC 1(modulated)(Lowest end)Volt meter is L604 (Osc. Coil) Connected to TP1 & TP2108 MHzTerminals108 MHz stretch orDC 8V 0.3V TP 5 and grg 2through matching network(modulated)across speaker (Highest end)squeeze if necessaryvoice coilL601 (RF coil) 388 MHz 88 MHzstretch orVolume (modulated)squeezeMaximumcontrol at 106 MHzTC 601 max. position 4(modulated)106 MHz (RF trimmer) 5 Repeat steps 3 and 4 as necessary to minimize tracking error and also steps 1 and 2 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 522 KHz522 KHzDigital DC 1(modulated)(Lowest end)NANAVolt meter is 1620 KHz1620 KHzL 605 Connected to 2A standard radiation(modulated)Across speaker(Highest end)(Osc.Coil)DC 8V 0.3V TP 5 and grg loop ant.603 KHzvoice coilL 603Volume 3(modulated)603 KHz(ant. coil)Maximumcontrol at 1404 KHzTC 603 max. position 4(modulated)1404 KHz(ant. trimmer) 5 Repeat steps 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 DA11B3V 2The alignment for CD section is fully automatic and no adjustment is reguired FM RF ALIGNMENT ALIGNMENT PROCEDURE FOR CD SECTION 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 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. ( 2 ) HEAD AZIMUTH ADJUSTMENT .Test PointAdjustFrequencyFrequency 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 RbL40160KHz 0.3KHz54KHz 2KHz 2.3 - Press PLAY and set VOLUME at reference output. 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. GENERAL PREPARATION - = TO CASS PCB CN401 60KHz 1 Ra 10 ohm Rb 10 ohm 4 INPUT OUTPUT 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 RadioFans.CN 收音机爱 好者资料库 RRCD 2420 MP3? TUNER IC601 TB2132FN 5V REG Q111 Q113 FUNCTION SELECTOR SW 301 TAPE R/P IC401 LS22241 MCU U701 TC94A09E-209 MUTING CIRCUIT Q207 Q208 POWER AMPLIFIER IC101 DV3287B CD SERVO SYSTEM U702 TC94A02F U703 TA2153FN U706 MM1469PH 3.3V REG U708 B1117N DISPLAY MAIN POWER SUPPLY D501 D504 SPEAKER 5.7 L-CH R-CH FM ANT. R/P HEAD POWER SWITCH Q105 6.5V REG Q105Q109 CD POWER SUPPLY SW. Q701 Q702 Q705 5V REG U709 7805 IM SRAM U705 CD MECHANISM DA11B3V BATT 1.5V X 6 AUDIO CONTROL VR301 Q301 Q302 RadioFans.CN 收音机爱 好者资料库 RRCD 2420 MP3? RadioFans.CN 收音机爱 好者资料库 RRCD 2420 MP3? RadioFans.CN 收音机爱 好者资料库 RRCD 2420 MP3? RadioFans.CN 收音机爱 好者资料库 RRCD 2420 MP3? RadioFans.CN 收音机爱 好者资料库 RRCD 2420 MP3? 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 IC601 TB2132FN X1 75KHZ C628 20P C629 20P R609 12K R608 12K C624 3n3(M) C625 3n3(M) + C627 1u + C626 1u R611 4K7 R610 4K7 R612 10K R613 10K L603 72:30T TD603 SVC384 TC603 T10P L602 * TC602 * C605 * TD602 * C604 * L601 4.5X3T5 TC601 10P C602 20P TD601 SVC201 C601 1n C603 100n R601 47K R602 * R603 47K L604 4X2T5 C607 * TD604 SVC201 R604 47K C606 20P 3 1 6 4 L605 7AL-369SO C609 330P C608 68P C610 8P C642 10n R605 100K C630 100n D603 1N4148 L608 100uH R620 5K6 R6215K6 Q603 9014C Q604 9014C R624 2K R625 1K5 C640 100n + C639 10u R623 390 R622 3K3 4 6 3 2 1 T602 7076A C635 15p D604 1N4148 R615 4K7 C633 20n + C634 47u Q601 9014CQ602 9014C C637 20P C632 20n + C631 10u L607 100uH C636 22p R617 68K R619 39K R618 820K R616 33 C638 10n D605 1N4148 R626 10K FMRTVRVDDAMRFMOAMOCECLKDAP+DOFBFAPGXO C643 1n C647 100n C646 100n 1 2 3 CN501 3PINS Lch Rch GND TO FUNCTION BOARD R737 1K 1 2 3 4 5 6 7 8 9 10 11 12 13 CN713 13PINS C1 C2 C3 C4 S1 S2 S3 S4 S5 S6 S7 S8 S9 R704 10K R703 4K7 R793 4K7 R794 10K SANYO DA1 1V TUNER BAND AREA=GEN2PUH SELECT R795 10K 1 2 CN708 2PINS R801 10K R802 10K R796 22K TO CD DOOR SW C 4 R805 47K R806 47K D704 4148 D702 IN4001 L710 47uH + C713470u R792 10K + C702 470u + C701 470u L709 47uH R7562K2 R7552K2 R754 2K2 R758 4K7 R759 4K7 R7574K7 AD00 AD01 AD02 AD03 R705 L=FUN MCU+5V STEREO MUTE FUNCA TUNER CD TAPE 0 1 1 DGND +7V K04 DOWN/REW K03 UP/FF K02 STOP/BAND K01 PLAY/PAUSE R03 2K7 R02 2K R01 1K5 R07 390 D01 LED K06 PROG/MEM K08 DIR/M.DN K07 DIR/M.UP K05 MODE R06 2K7 R05 2K R04 1K5 1 2 3 4 CN02 4PINS AD2 AD1 DISPLAY& KEY BOARD 1 2 CN03 2PINS Pow. on led board 1 2 CN03A 2PINS PLL-CE PLL-DATA PLL-CLK FUNC-B FUNC-A 1 2 3 4 CN710 4PINS DGND +7V AD2 AD1 AD2 AD1 REMOTE BACK-UP L-CH GND R-CH GND R-OUT L-OUT R305 220K R306 220K R307 4K7 R308 4K7 C305 22n(M) + C307 u47 + C308 u47 C306 22n(M) Q301 9014C Q302 9014C 1 2 3 CN308 3PINS R304 47K R314 2K7 C310 1n(M) R313 2K7 C3091n(M) R309 39K R303 47K R310 39K R312 10K R31110K R-C 1 2 3 CN106 3PINS GND L-C C313 68n(M) C314 68n(M) C311 600p(M) R301 30K R302 30K 1 2 3 4 5 6 7 CN304 7PINS 1 2 3 SW302A 2P2TD OFF ON 4 5 6 SW302B 2P2TD OFF ON R315 1K 2 3 4 1 SW301A 4P3TD RA TAPE CD 10 11 12 9 SW301C 4P3TD RA TAPE CD MAIN+ 6V5 CONTROL GND R/CH L/CHCD-R GND CD-L R146 14 15 16 13 SW301D 4P3TD 6 7 8 5 SW301B 4P3TD RA TAPE CD + C315 4u7 2 31 4 VR301A 50KB 5 61 7 VR301B 50KB 1 2 3 CN303 3PINS 1 2 3 4 5 6 7 8 CN102 9P/WF 1 2 3 4 5 6 7 8 CN301 9PINS SW204 LEAF SWITCH 1 2 3 CN104A 3PINS 3PINS A - + M201 6V MOTOR R148 1K D110 1N4148 Q114 9013/H R149 10K C138 47u 6V L/CH P L/CH R R/CH R R/CH P GND GND 1 2 3 CN302 3PINS Lch Rch GND CASS V+ MAIN+ 6V5 GND CASS V+ TO CASS BOARDRFOM CD AF OUT FROM TUNER AF OUT Tuner V+ CD V+ R316 100 R317 2K2 GND REMOTE MCU 5V C316 47u C317 20n RMC OUT 1 GND 2 VCC 3 IR301 * Tuner V+ CD V+ GND REMOTE REMOTE V+ C312 600P(M) JPG206JP 1 2 3 CN305 3PINS 1 2 3 CN305A 3P/WF 1 2 3 CN307A 3P/WF 1 2 3 CN307 3PINS 1 2 3 4 CN306A 4P/WF 1 2 3 4 CN306 4P/2mm JP301JP JPG302JP JP303JP JP304JP JP305JP JP208JP R/chL/ch R318 100 R319 100 R320 8K2 R321 8K2 C301 u47 C302 u47 C304 u47 C303 u47 1 2 3 CN104 3PINS 3PINS 1 2 3 4 5 6 7 8 9 10 11 12 13 CN01 13PINS 18 : 8. 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 LCD0115PINS 1 2 3 CN309A 3PINS C613 30P C612 30P C611 30P L606 4.5X3T5 4 6 3 2 1 T601 7AL-321F CF602 SFE10.7MS3 CF601 SFE10.7MS3 CF603 SFU450B C618330P CF604 CDA10.7M7GA128 C619 20n + C620 0.1u R607 3K3 C621 100n C623 10n R606 330 C622 10n D601 1N4148 D602 1N4148 R614 100 RLLPF2 ZD601 3V3 FMRTVRVDDAMRFMOAMOCECLKDAP+DOFBFAPGXO XILPF1MPXDETQUADAIFVCCFIFAGCMIXGNDANT R628 220K C645 * Q605 9018F 1 2 CN602 2PINS R632 5K6 1 2 CN602A 2PINS SW501 2P2T ST/MO FMFM ANT JP607JP C648 100P C649 * C641 1n C615 100n C616 220u C614 22u C617 10u R627 1K Q606 9013/H C650 10u C651 220u R633 10K D111 IN4148 D112 IN4148 D113 IN4148 D114 IN4148 D115 IN4148 D116IN4148 D117IN4148 D121 IN4148 D122 IN4148 R151 27K R150 10K R152 27K R153 27K R154 10K R155 27K 1 2 3 CN309 3PINS RA TAPE CD Q115 9014/c Q116 9012/H ZD101 4V7 JP605JP JP216JP JP213JP JP211JP J786 JP J217 JP J218 JP J212 JP JP212JP JP609JP R635 5K6 JP744JPJP745JP J211 JP R157 39K Q118 9014/C Q117 9014/C R160 330K R159 2M2 R161 330 R158 390K JP746JP JR723JR JR720 JR J775JP J776 JPJ777 JP J788 JP J787 JP JR717JR JR716JR JR710JR R629 82 R636 10 RadioFans.CN 收音机爱 好者资料库 RRCD 2420 MP3? DM- 12 GND2 13 OPOUT 14 OPI- 15 OPI+ 16 TR- 17 TR+ 18 TRO 19 (TRO) 20 VCC1 21 VCC2 22 BIAS 23 (FOO) 24 FM- 1 FM+ 2 FMO 3 (FMO) 4 TRB 5 TREG 6 MUT 7 GND 8 (DMO) 9 DMO 10 DM+ 11 FOO 25 FC+ 26 FC- 27 GND 28 GND3 29 GND4 30 U706 MM1469PH AD0 12 IO1 13 IO2 14 IO3 15 GND 16 IO4 17 IO5 18 IO6 19 IO7 20 IO8 21 CE1 22 AD10 23 OE 24 NC 1 AD16 2 AD14 3 AD12 4 AD7 5 AD6 6 AD5 7 AD4 8 AD3 9 AD2 10 AD1 11 AD11 25 AD9 26 AD8 27 AD13 28 WE 29 CE2 30 AD15 31 3V3 32 U705 1M SRAM (SOJ) 2VRO 12 TEN 13 TEO 14 SBAD 15 FEO 16 FEN 17 SEB 18 VRO 19 RERP 20 BTC 21 RFCT 22 PKC 23 RFRPIN 24 VCC3 1 RFGC 2 GMAD 3 FNI 4 FPI 5 TPI 6 TNI 7 MDI 8 LDO 9 SEL 10 TEB 11 RFGO 25 GVSW 26 AGCIN 27 RFO 28 GND 29 RFN2 30 U703TA2153FN SDIo 12 BCKiO 13 LRCKiO 14 AD5 15 CE 16 OE 17 2V5 18 STANDB Y 19 VSS 20 VSSL 21 VRAL 22 AD10 33 LD 23 2V5L 24 2V5R 25 RO 26 VRAR 27 VSSR 28 TESTP 29 CKS 30 AD12 31 AD11 32 AD9 34 3V3T 35 AD8 36 AD7 37 AD6 38 REQ 39 VSS 40 AD13 41 AD14 42 WR 43 AD16 44 RESET 1 MIMD 2 AD0 3 AD1 4 SDA 5 SCL 6 AD2 7 3V3T 8 SDo 9 AD3 10 AD4 11 AD15 45 io0 46 io1 47 GND 48 io2 49 io3 50 io4 51 2V5 52 io5 53 io6 54 io7 55 GNDP 56 Pdo 57 Vco1 58 2V5P 59 Cko 60 2V5X 61 xi 62 xo 63 GNDX 64 U702 TC94A02F-007 S12 12 S13 13 LRCK 14 BCK 15 DATA 16 DOOR-SW 17 INNER-SW 18 +5V 19 GND 20 POWER OUT 21 CDRW/STEREO 22 PLLDATA 33 FUNCT A 23 FUNCT B 24 EQ1 25 KEY-AD1 26 KEY-ED2 27 TUNER BAND 28 PUH SELECT 29 REQ 30 SDA 31 SCL 32 PLL-CLK 34 PLL-CE 35 EQ2 36 FUNT IN/OUT 37 VOL-DN 39 VOL-UP 40 MUTE 41 DECODER RESET 42 DOUT 43 SBSY 44 SBOK 45 S1 1 S2 2 S3 3 S4 4 S5 5 S6 6 S7 7 S8 8 S9 9 S10 10 S11 11 +5V 46 GND 47 P2VREF 48 PDO 49 TMAX 50 NC 38 LPFN 51 LPFO 52 RVREF 53 VCOF 54 AGND 55 SLCO 56 RFI 57 A+5V 58 RFCT 59 RFZI 60 RFRP 61 FEI 62 SBAD 63 TEI 64 TEZI 65 FDO 66 TRO 67 VREF 68 RFGC 69 TEBC 70 XI 78 FMO 71 DMO 72 2VREF 73 SEL 74 +5V 75 GND 76 XGND 77 DVSR 81 RO 82 DVRR 83 DVDD 84 DVRL 85 DVSL 87 NC 88 NC 89 RST 90 HOLD 91 REMOTE 92 MXO 93 MXI 94 MGND 95 XO 79 X+5V 80 M+5V 96 COM1 97 COM2 98 COM3 99 COM4 100 LO 86 U701 TC94A09F-209 Q707 TL431 S1 S2 S3 S4 S5 S6 S7 S8 S9 C1 C2 C3 C4 C786 10n C723 15P C724 15P X702 75KHz R791 10K C785 100P C784 100n R738 * R790 560 R789 10 C781 100n C783 100n + C782 100u C799 15P C780 15P X701 19.93MHz R78010K C778 10n C77747n C77647n C77547n C77447n C773470P C772 470P R8043K3 2 + C787 47u R712 10K R750 10K C740 100n C736 100n 3V3 R785 2K2 C738100n R7482M2 R752 10K R753 2K2 R749 4K7 R782 220K C733 100n C714 100n R736 10K R71110K R751 10K C712 100n + C711 47u + C725 47u + C709 47u C710 100n C708 2n2 C705 2n2 C704 2n2 C707 2n2 R710220 R708 220 R709220 R707 220 + C703 10u + C706 10u AD00 AD01 AD02 AD03 AD04 AD05 AD18 AD19 IO7 IO6 IO5 IO4 IO3 IO2 R74710K C737 100n R745 270 R746 270 C735 330n C734 100n AGND(PLL) IO1 IO0 AD15 AD16 AD17 AD14 AD13 AD06 AD07 AD08 AD09 AD10 3V3 R705 10K L=FUNC IN R784 10K C770 10n + C771 47u + C769 47u C768 47P R783 47K + C761 47u R781 15K C767 15n C766 10n C765 2n7 C7644n7 C762 10n + C763 47u C746 47n R798 220 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CN702 16PINS 1 2 3 4 5 6 CN709 6PINS R803 220 R797 10K Q701 8550C Q702 9014C C751 10n + C788 470u + C752 100u + C722 220u R706 1K R786 47K R787 10K R788 22K GND SLT+ FM+ FM- DM- DM+ TO CD MECHANISM R77433K R799220 R7731K TEO T2 C7494n7 R772 56K + C759 47u + C750 100u R771 15 Q706 9015C L708 10uH R770 JR R769 62K R76868K R76768K R76668K R76568K R76462K R76315K R76215K R76115K R76015K C741 10n L713 10uH TO CD PUH(SANYO DA11V) FC- TR- TR+ FC+ PD VR LD GND F C B A D E VCC VC C748 220n C747 220n T5REGO C794 100n C743 10n C760 56P +C742 47u +C739 47u C745 100n R775 220 R778 18K C744 2P T1 VREF R776 43K R777 2K2 R779 1K T4 FEO T3 RFO R730 10K R72910K R72810K R72710K R72610K R72510K R72410K R72310K R72210K R72110K R72010K R71910K R71810K R71710K C732100n + C73147u 128K X 8 (15ns) R73510K R73410K R73310K R73210K R73110K R74410K R74310K R74210K R74110K R74010K R73910K 3V3 IO7 IO6 IO5 IO4 IO3 IO2 IO1 IO0 AD15AD16 AD17 AD14 AD13 AD06 AD07 AD08 AD09 AD10 AD00 AD01 AD02 AD03 AD04 AD05 AD18 AD19 AD11 AD12 AD11 AD12 IO(0-7) AD(00-19) 1 2 3 CN701 3PINS R808 27K R807 27K R702 4K7 R701 4K7 DECODER GND R-CH AGND L-CH L707 47uH +C730 47u + C720 47u R716 10K R715 33 C729 100n + C728 220u Q708 TL431 L70547uH +C726 47u + C719 10u R714 10K R713 33 + C721 47u +C727 47u L706 47uH L704 47uH OUTIN G U7097805 OUTIN G U708 B1117N L703 47uH L702 47uH 3V3 + C715 100u + C716 220u C717 100n C718 100n L701 CAF03A FOR SANYO DA11V PICK-UP CA B ER E 0 1 1 0 1 1 DIGITAL3V3 REGULATOR ANOLOG 2V5 (PLL) ANOLOG 2V5 (DAC) X TAL 2V5 DIGITAL 2V5 DGND DGNDX GND R-CH GND L-CH R-CH GND GND L-CH R-CH L-CH 115 GND GND V+ GND RECTIFIER BOARD R143 220K AC SOCKET Q113 9014C R145 150K 1% R146 3K9 R144A 100KH-R R112 4K7 R113 100K R114 100K R117 1 R118 1 R138 15K R127 82OK D5011N4001 D503 1N4001 C50120n 50V C50220n 50V C50420n 50V + C119 100u C123 100n