Sharp CD-BA120 Manuale di Servizio

CD-BA120SHARP CORPORATIONNo. XXXXXXXXXXXXX CONTENTSPageIMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)...

CD-BA120/125– 10 –REMOVING AND REINSTALLING THE MAIN PARTSTAPE MECHANISM SECTIONPerform steps 1 to 5 and 7 of the disassembly method toremove the tape

– 11 –CD-BA120/125How to remove the pickup (See Fig. 11-2)1. Remove the screws (B1) x 2 pcs., to remove the shaft (B2).2. Remove the stop washer (B3)

CD-BA120/125– 12 –CD SECTION• AM IF/RFSignal generator: 400 Hz, 30%, AM modulated*1. Input: Antenna, Output: TP302*2. Input: Antenna, Output: TP301TU

– 13 –CD-BA120/125• The indicated voltage in each section is the one measuredby Digital Multimeter between such a section and the chas-sis with no sig

CD-BA120/125– 14 –WAVEFORMS OF CD CIRCUITTFDOTDOStoppedCH1=500mVDC 10:1CH3=500mVDC 10:1500ms/div(500ms/div)NORM:20kS/s13=Record Length=Smoothing :

– 15 –CD-BA120/125 Figure 15 BLOCK DIAGRAM (1/3)CNP12 CNP11Q2+3.3V +5V CONT5CONT2CONT3CONT4CONT7CONT6SLD0SPD0FD0TD0+5V TO DISPLAY SECTIONCLAMP SWCDINT

CD-BA120/125– 16 – Figure 16 BLOCK DIAGRAM (2/3)REC/PLAYCLCEDISYSTEMMUTEQ601Q602DOCLDICEMO/ST+B2SWITCHING +B2FM/AMIC302LC72131PLL(TUNER)FM/AMOUT +B4LR

– 17 –CD-BA120/125 Figure 17 BLOCK DIAGRAM (3/3)PT801POWER TRANSFORMER5V~REC/PLAYVLOAD+B4RESET ICSYS. STOPRESETIC704Q707+B2SPEAKERTERMINAL(FRONT)(RE

CD-BA120/125– 18 –Figure 18 SCHEMATIC DIAGRAM (1/10)ABCDEFGH123456• NOTES ON SCHEMATIC DIAGRAM can be found on page 13. 42414039383736LOADING M-VCC4L

– 19 –CD-BA120/125Figure 19 SCHEMATIC DIAGRAM (2/10)78 9 10 11 12• The numbers 1 to 13 are waveform numbers shown in page 14.CD SIGNALRESWRQCEDO

CD-BA120/125– 2 –● GeneralPower source: AC 120 V, 60 HzPower consumption: 35 WDimensions: Width; 10-5/8" (270 mm)Height; 11-13/16" (300 mm)D

CD-BA120/125– 20 –ABCDEFGH123456• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.Figure 20 SCHEMATIC DIAGRAM (3/10)2423222120191817169876543212423

– 21 –CD-BA120/125Figure 21 SCHEMATIC DIAGRAM (4/10)78 9 10 11 12171615141312111098-VP GND A_10V M_10V A_10V GND GND GND VF2 VF1 POWER CEDOUN_SW_5VCLK

CD-BA120/125– 22 –ABCDEFGH123456121110987654321321321+5V (CD +B) +5V+B+B+B+B+B+B+B+B+BM 10VGND(A_GND) A 10VGND(A_GND) VF2-VPVF1POWERGND (M_GND) LR

– 23 –CD-BA120/125Figure 23 SCHEMATIC DIAGRAM (6/10)78 9 10 11 12R OUT L OUT SP_LchSP_RchSP_Lch_GNDSP_Rch_GNDSP_LchSP_RchSP_Lch_GNDSP_Rch_GND 234562

CD-BA120/125– 24 –Figure 24 SCHEMATIC DIAGRAM (7/10)ABCDEFGH123456• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.FM SIGNAL AM SIGNAL MAIN PWB-A1

– 25 –CD-BA120/125Figure 25 SCHEMATIC DIAGRAM (8/10)78 9 10 11 12TPR373 1KR372 1KR374 1KR378 1KIC302LC72131PLL(TUNER) ST INDIFCONTFM/AMFM/AMSDMO/STAO

CD-BA120/125– 26 –ABCDEFGH123456• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.Figure 26 SCHEMATIC DIAGRAM (9/10)3332313029282726252423222120191

– 27 –CD-BA120/12578 9 10 11 12Figure 27 SCHEMATIC DIAGRAM (10/10)33323130292827262524232221201918171653 2 1 321POWERUN_SW 5V+B+B+B+B+B+B+B+B+B+B+B+B+

CD-BA120/125– 28 –Figure 28 WIRING SIDE OF P.W.BOARD (1/6)ABCDEFGH123456SO901SPEAKERTERMINALCNP301X352IC302 L351C394C380R375C393R382C307T301Q302VD303

– 29 –CD-BA120/125Figure 29 WIRING SIDE OF P.W.BOARD (2/6)78 9 10 11 12JK901HEADPHONESHEADPHONESPWB-A3R917C372C368C374C373C371157C358C370L352D306R609R

– 3 –CD-BA120/125NAMES OF PARTSCD-BA120/12512345896710121116131822192021152324 25 26 27 28 29141730 31 Front panel11.(CD) Disc Tray12.(CD) Disc Numbe

CD-BA120/125– 30 –Figure 30 WIRING SIDE OF P.W.BOARD (3/6)ABCDEFGH123456IC704SW701POWERRD01SW703TIMER/SLEEPL701D710D711SW715TAPED706D702D703RD14RD24SW

– 31 –CD-BA120/125Figure 31 WIRING SIDE OF P.W.BOARD (4/6)78 9 10 11 12RD05R717R7168DSW720PLAY/REPEATC710R769R714RD18SW719FASTFORWARDR715RD08SW710OPEN

CD-BA120/125– 32 –Figure 32 WIRING SIDE OF P.W.BOARD (5/6)ABCDEFGH123456• The numbers 1 to 13 are waveform numbers shown in page 14.C49 C50 CNP3

– 33 –CD-BA120/125Figure 33 WIRING SIDE OF P.W.BOARD (6/6)78 9 10 11 12CD LOADING MOTORPWB-E16123456BI4M3T/T UP/DOWNMOTORRDWHBKWHBKWH–+SW3DISCNUMBERSW

CD-BA120/125– 34 –VOLTAGE0V0V0V0V0V0V4.67V4.78V0V1.16V2.25V4.30V4.85V4.75V4.74V4.69V4.78V0V5.0V0V0V0V4.85V0V4.69V4.82V0V0.3V0V0V0V4.81V4.81V4.81V4.9V5

– 35 –CD-BA120/125Parts code1. CD optical pickup Lens cleaner disc UDSKA0004AFZZTROUBLE SHOOTINGWhen the CD does not functionWhen the CD section does

CD-BA120/125– 36 –If the level is not normal, check around pins 27~29 on IC1.1. Is focus servo activated? (Waveform drawing 36-2) Pins 1~11 on IC1Chec

– 37 –CD-BA120/125The tracking servo is not activated.Check the peripheral circuits at pins 18 and 19 on IC1, pin 23 onIC2, and CNS1A/B.If the wavefor

CD-BA120/125– 38 –Is pin 35 (C2F) on IC2 "L"?YesNoThe HF waveform is normal and the time is displayednormally, but no sound is produced. Or

– 39 –CD-BA120/125FUNCTION TABLE OF ICFigure 39 BLOCK DIAGRAM OF ICIC1 VHiLA9235M/-1: Servo Amp. (LA9235M)IC2 VHiLC78641E-1: Servo/Signal Control (L

CD-BA120/125– 4 – Rear panel11. AC Power Input Socket12. Rear Speaker Terminals (CD-BA125 Only)13. Front Speaker Terminals14. FM/AM Loop Aerial Socke

CD-BA120/125– 40 –IC2 VHiLC78641E-1: Servo/Signal Control (LC78641E) (1/2)1 PDO1 Output – For PULL Phase-comparison output terminal for built-in VOC

– 41 –CD-BA120/125IC2 VHiLC78641E-1: Servo/Signal Control (LC78641E) (2/2)44 LVDD – – L channel Power terminal for L channel.45 LCHO Output 1/2VDD D/

CD-BA120/125– 42 –IC701 RH-iX0336AWZZ: System Microcomputer (IX0336AW) (1/2)Port Name Terminal NamePin No. Input/OutputIn this unit, the terminal wit

– 43 –CD-BA120/12554 P120 PLAY SW_B Input PLAY SWITCH FOR T255 P119 PPA Input TAPE2 A–SIDE FULL PROOF56 P118 FPB Input TAPE2 B_SIDE FULL PROOF57 P117

CD-BA120/125– 44 –IC601 VHiLC75341/-1: Audio Processor (LC75341)Figure 44 BLOCK DIAGRAM OF IC19202122232412345678910 11 12 13 14 15 161817LVrefRVrefC

– 45 –CD-BA120/125FL701 VVKSVA9MS13-1: FL DisplayFigure 45 FL DISPLAYP1P2P3P4P5P6P7P8P9P10P11P12P13P14P15P16P17P18P19P201GUTVWabkjhfmdgpenrcs2GUTVWabk

— M E M O —– 46 –CD-BA120/125

PARTS GUIDENOTE:Parts marked with “ ” are important for maintaining the safety of the set.Be sure to replace parts with specified ones for maintaining

PRICERANKDESCRIPTIONNO.PARTS CODE NO. PARTS CODEPRICERANKDESCRIPTIONCD-BA120/125CD-BA120/125INTEGRATED CIRCUITSIC1 VHILA9235M/-1 J AQ Servo Amp.,LA923

NO.PRICERANKDESCRIPTIONPARTS CODENO. PARTS CODEPRICERANKDESCRIPTIONCD-BA120/125C138 VCEAZA1AW227M J AC 220 µF,10V,ElectrolyticC139 VCEAEA1HW335M J AB

– 5 –CD-BA120/125OPERATION MANUALSETTING THE CLOCK POWER ON/ STAND-BYCLOCKMEMORY/SETTUNING/TIME( )In this example, the clock is

PRICERANKDESCRIPTIONNO.PARTS CODE NO. PARTS CODEPRICERANKDESCRIPTIONCD-BA120/125R108,109 VRD-MN2BD332J J AA 3.3 kohms,1/8WR110 VRD-MN2BD473J J AA 47 k

NO.PRICERANKDESCRIPTIONPARTS CODENO. PARTS CODEPRICERANKDESCRIPTIONCD-BA120/125CNP101 QCNCM705AFZZ J Plug,3PinCNP102 QCNCM707GAFZZ J Plug,7PinCNP301 9

PRICERANKDESCRIPTIONNO.PARTS CODE NO. PARTS CODEPRICERANKDESCRIPTIONCD-BA120/125257 92LPT0320201 J AE Support,Stabilizer258 92LPT0330301 J AU Chassis,

CD-BA120/125– 6 –ABCDEFGH123456Figure 6 CD MECHANISM EXPLODED VIEWCD-BA120/125306-1701304701302301702303M1703x4305x2SW4M2305PWB-C306-2306-3306704

CD-BA120/125– 7 –Figure 7 CABINET EXPLODED VIEW (1/2)ABCDEFGH123456Note: Only tape mechanism assembly and consumable parts are supplied for replaceme

CD-BA120/125– 8 –Figure 8 CABINET EXPLODED VIEW (2/2)ABCDEFGH123456CD-BA120/125248CDMECHANISM205257235236243224259239239260204-2204-1204-325826920424

CD-BA120/125– 9 –ABCDEFGH123456Figure 9 SPEAKER EXPLODED VIEW (1/2)CP-BA120/125907905x4904906902903901BKRDSPEAKERSP1(L-CH)SP2(R-CH)SPEAKERSP1(L-CH)SP2

CD-BA120/125ABCDEFGH123456– 10 –903902904x6905SP3(L-CH)SP4(R-CH)901WOOFERSP3(L-CH)SP4(R-CH)BLACKWHITEWOOFERSP3(L-CH)SP4(R-CH)GBOXS0042AWM1 CD-BA125 ON

CD-BA120/125PACKING OF THE SET (FOR U.S.A. ONLY)Setting position of switches and knobsTape Mechanism STOPNot Replacement ItemSPAKP0013AWZZ1Polyethylen

CD-BA120/125– 12 ––– MEMO ––

CD-BA120/125– 6 –MINI COMPONENT SYSTEMQuick Guide/Guía rápidaCD-BA120● Remote control x 1●Controlador remoto x 1● 2 “AA” batteries●Dos pilas “AA”Remot

CD-BA120/125COPYRIGHT 2000 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication may be reproduced,stored in a retrieval system,

– 7 –CD-BA120/1251 Top Cabinet 1. Screw ... (A1) x4 7-12 Side Panel 1. Screw ... (B1) x6 7-1(Left/right)3 CD Playe

CD-BA120/125– 8 –Figure 8-2Figure 8-3Figure 8-4Figure 8-5Figure 8-6TurntableDisc Tray(H2) x1CD Player Unit(H) x212(J1) x3(J1) x3(K3) x2(K2) x2(K3) x2C

– 9 –CD-BA120/125CP-BA120/125CP-BA120/125Figure 9-2Figure 9-1Figure 9-3(L2) x3(L1) x1(M1) x5(L1) x1LoadingMotorPWBCDMechanismCam GearDriverDriver shou