Sharp XL-70C Manuel de service

XL-70/70C CONTENTSPage IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)...

XL-70/70C– 10 –TAPE MECHANISM SECTIONPerform steps 1 to 8 and 10 of the disassembly method toremove the tape mechanism. (See page 8.)How to remove the

– 11 –XL-70/70CFigure 11-4How to remove the pickup (See Fig. 11-4)1. Remove the mechanism cover, paying attention to thepawls (A1) x 4 pcs.2. Remove t

XL-70/70C– 12 –MECHANISM SECTION• Driving Force CheckTorque MeterSpecified ValuePlay: TW-2412 Over 80 g• Torque CheckTorque MeterPlay: TW-2111 30 to 6

– 13 –XL-70/70C2. CD Test Mode (TEST 1)In the CD test mode the operation of each step is enabled even when the LID-SW is off. However, if focus cannot

XL-70/70C– 14 –The time display indicates always "0:00".When the following buttons are pressed in this state, the operation is executed as f

– 15 –XL-70/70C3. Tuner Test Mode (TEST 2)1. Outline of tuner (radio) test mode The tuner test mode is intended to store the adjustment and measure

XL-70/70C– 16 –4. Electronic volume Test Mode (TEST 3)When the test mode is set, the following indication lights for one second.When this mode is set,

– 17 –XL-70/70CERROR LISTPU-IN SW detection errorCD read errorError content ... Disc data cannot be read properly oreven if it can be read, th

XL-70/70C– 18 –NSW801 PICKUP IN ON—OFFSW700 JOG ON—OFFSW709 ON/STAND-BY ON—OFFSW710 CLOCK/TIMER/SLEEP ON—OFFSW711 TUNING UP ON—OFFSW712 PLAY/CD PAUSE

– 19 –XL-70/70CWAVEFORMS OF CD CIRCUITNO DISC FOCUS SEARCH STOP PLAYFOO1 TMAX 1IC802 48pin FO+ 2SBOK2IC804 26pinIC802 12pinFO- 3 DMO 3IC804 25pin

XL-70/70C– 2 –IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)BEFORE RETURNING THE AUDIO PRODUCT(Fire & Shock Hazard)Before returning the audio product t

XL-70/70C– 20 – Figure 20 BLOCK DIAGRAM (1/4)REC MUTEQ105Q106150K150KMUTE ALC + - - + 3 1 5 11128 102 IC102 BA3311L 6 7 9 NFL-INR-INNFL-OUT ALC R-OUT

– 21 –XL-70/70C Figure 21 BLOCK DIAGRAM (2/4)C MUTEQ105Q106REC STEREOSDCECD+BP MUTEP-STB DICLDOFM ST SD1 2 34567CD LCNP605 TO CD SERVO PWB BIASREC

XL-70/70C– 22 – Figure 22 BLOCK DIAGRAM (3/4)1 2 3 4 5 6 7 8 9 101112131415161718192021222324 2526272829303132333435363738394041424344 454881828384858

– 23 –XL-70/70C Figure 23 BLOCK DIAGRAM (4/4)03132333435363738394041424344 454647484950515253545556575859 60616263646566676869707172737475767778798081

XL-70/70C– 24 –Figure 24 SCHEMATIC DIAGRAM (1/6)ABCDEFGH123456• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.R3662.2KQ172KRC102 MC3721/50C3711/5

– 25 –XL-70/70CFigure 25 SCHEMATIC DIAGRAM (2/6)78 9 10 11 12R6343.3KQ609KRC107 MR43510KR43610KCNP65221D4011N4004D4021N40041110987654R1133.3KCNS704987

XL-70/70C– 26 –Figure 26 SCHEMATIC DIAGRAM (3/6)ABCDEFGH123456• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.C77347/16R7992.2KR72347KR7B247KR7B3

– 27 –XL-70/70CFigure 27 SCHEMATIC DIAGRAM (4/6)78 9 10 11 12R7851KR78647KR78947KCFW70491CNS703111098765432BI70210987654321LCD701LCD DISPLAY R78447KR7

XL-70/70C– 28 –• The numbers 1 to 17 are waveform numbers shown in page 19.ABCDEFGH123456• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.Fi

– 29 –XL-70/70CFigure 29 SCHEMATIC DIAGRAM (6/6)78 9 10 11 12C8430.1R8632.2KIC804 LA6541D 302928272625242322212019181716151413121110987654321R8612.2KR

– 3 –XL-70/70CNAMES OF PARTSXL-70/70C Front panel1. Timer Indicator2. Record Indicator3. Sleep Indicator4. (CD) Random Indicator5. (CD/TUNER) Memory

XL-70/70C– 30 –Figure 30 WIRING SIDE OF P.W.BOARD (1/4)ABCDEFGH123456MAIN PWB-A1HEADPHONESPWB-A5C109R141C125C111R107C107IC102 CNP703C113R101IC101 CNP1

– 31 –XL-70/70CFigure 31 WIRING SIDE OF P.W.BOARD (2/4)78 9 10 11 1212D709D708D707D706D705D704D703D702D701SW710 SW723 BI702C773C771IC702 R787R798R799S

XL-70/70C– 32 –Figure 32 WIRING SIDE OF P.W.BOARD (3/4)ABCDEFGH123456• The numbers 1 to 17 are waveform numbers shown in page 19.F3895AF11871510

– 33 –XL-70/70CFigure 33 WIRING SIDE OF P.W.BOARD (4/4)78 9 10 11 12R602R604D601R603R606C607C606C604C603C615C648R610C601R609C616IC601 C647123456789101

XL-70/70C– 34 –TROUBLESHOOTINGWhen the CD does not functionWhen the CD section does not operate when the objective lens of the optical pickup is dirty

– 35 –XL-70/70CMake sure that the disc is normal, and set the CD TEST MODE (STEP 1).Is the measured voltage as specified in circuit diagram?Check the

XL-70/70C– 36 –• Laser failure.Is 0V applied to the pin 57 (SEL) of IC802 ?YesNoDoes the laser come on when pattern cut between pin 8 (SEL) ofIC801 an

– 37 –XL-70/70C• Focus servo sawtooth wave failure.Is +6.2V applied to the pins 1 and 30 (VCC) of IC804 ? Is sawtooh wave output to the pin 48 (FOO) o

XL-70/70C– 38 –• HF error.YesYesIs output (tracking error signal) obtained at the pins 46 (TEI)and 47 (TEZI) of IC802 the CD TEST MODE "STEP 4&qu

– 39 –XL-70/70C• Sled motor operation failure.YesYesIs following sled feed signal output the pin 53 (FMO) of IC802when FF/REW key is pressed after the

XL-70/70C– 4 –XL-70/70CCP-XL70U1243 Remote control1. Remote Control Transmitter LED● Tuner control section2. Preset Up/Down Buttons● CD control secti

XL-70/70C– 40 –FUNCTION TABLE OF ICIC401 VHiLC75342M-1: Function/Volume Equalizer (LC75342M)1 DI Serial data and clock input pin for control.2 CE Chi

– 41 –XL-70/70C1-4 COM3-COM0 Output LCD common output terminal.5-7 VLC3-VLC1 — LCD power supply terminal.8 VDD — Microcomputer power supply +5V.9 OSC2

XL-70/70C– 42 –FunctionTerminal NameInput/Output54 SEG46 P63/A3 Output Electric JOG dial UP.55 SEG45 P64/A4 Output Electric JOG dial DOWN.56 SEG44 P65

– 43 –XL-70/70CIC801 VHiTA2109F/-1:Servo Pre Amp. (TA2109F)1 VCC — Power voltage terminal2 FNI Input Main beam amp input terminal3 FPI Input Main bea

XL-70/70C– 44 –IC802 VHiTC9462F/-1: Servo/Signal Control (TC9462F) (1/3)1* TEST0 Input Test mode terminal. To be opened usually.2* /HSO Output Playbac

– 45 –XL-70/70C39 AVDD — Analog system power terminal.40 RFCT Input RFRP signal center level input terminal.41 RFZI Input RFRP zero cross input termin

XL-70/70C– 46 –83 DVDD — D/A converting section power terminal.84 DVR — Reference voltage terminal.85 LO Output L channel data forward rotation output

– 47 –XL-70/70CIC804 VHiLA6541D/-1: Focus/Tracking/Spin/Sled Driver (LA6541D)In this unit, the terminal with asterisk mark (*) is (open) terminal whi

XL-70/70C– 48 –LCD701: RV-LX0007SJZZ LCD DisplayFigure 48 LCD SEGMENTPinNo123456789101112131415161718192021com1com1z1h1g1a1RECh2g2a2SLEEPh3g3a3RANDOMh

XL-70/70CPARTS GUIDENOTE:Parts marked with “ ” are important for maintaining the safety of the set.Be sure to replace parts with specified ones for ma

– 5 –XL-70/70COPERATION MANUALRESETTING THE MICROCOMPUTER132,3AC INPUT3Reset the microcomputer under the followingconditions:● To erase all of the sto

PRICERANKDESCRIPTIONNO.PARTS CODE NO. PARTS CODEPRICERANKDESCRIPTIONXL-70/70C– 1 –XL-70/70CINTEGRATED CIRCUITSIC101 VHIBA3126N/-1 J AF Head Selector,B

NO.PRICERANKDESCRIPTIONPARTS CODENO. PARTS CODEPRICERANKDESCRIPTIONXL-70/70C– 2 –C313 VCCUTV1HJ6R0D J AA 6 pF (UJ),50VC314 VCCCTV1HH220J J AA 22 pF (C

PRICERANKDESCRIPTIONNO.PARTS CODE NO. PARTS CODEPRICERANKDESCRIPTIONXL-70/70C– 3 –RESISTORSVRS-TV2AB000J J AA 0 ohm,Jumper,1.25×2mm,GreenR7A0 VRS-TV2A

NO.PRICERANKDESCRIPTIONPARTS CODENO. PARTS CODEPRICERANKDESCRIPTIONXL-70/70C– 4 –R761~777 VRS-TV2AB102J J AA 1 kohm,1/10WR778~781 VRS-TV2AB473J J AA 4

PRICERANKDESCRIPTIONNO.PARTS CODE NO. PARTS CODEPRICERANKDESCRIPTIONXL-70/70C– 5 –702 XHBSD20P05000 J AA Screw,ø2×5mm703 XBBSD20P03000 J AA Screw,ø2×3

NO. PARTS CODEPRICERANKDESCRIPTIONXL-70/70CCP-XL70U– 6 –SPEAKER BOX PARTS701 HSY161SPK010 J AN Net Frame Ass’y702 HSY094SPK020 J AK Speaker Box Ass’y7

XL-70/70CABCDEFGH123456Figure 7 CD MECHANISM EXPLODED VIEW– 7 –306-1701304701302301702303NM802703x2305x2NSW801NM801305PWB-C306-2306-3306704307XL-70/7

XL-70/70CFigure 8 CABINET EXPLODED VIEWABCDEFGH123456– 8 –Note: Only the unit and consumale parts are supplied as parts supply for the Tape mechanism

XL-70/70C– 9 –Figure 9 SPEAKER EXPLODED VIEWABCDEFGH123456CP-XL70U709703SP603(L-CH)SP604(R-CH)SP601(L-CH)SP602(R-CH)705707x4708x4701704x4702706710TWE

XL-70/70C– 10 –PACKING OF THE SET (FOR U.S.A. ONLY)Setting position of switches and knobsTape Mechanism STOPCassette Holder CLOSECD Lid CLOSESaving En

XL-70/70C– 6 –Placing the systemInstalación del sistema4"(10 cm)4"(10 cm)8"(20 cm)4"(10 cm)32Putting batteries into the remote con

XL-70/70CA0005-2625DS•HA•CSC • SL • LAGSHARP CORPORATIONCommunication Systems GroupQuality & Reliability Control CenterHigashihiroshima, Hiroshima

– 7 –XL-70/70C6Listening to a tapeAudición de una cinta1253412643OPEN/CLOSELabel side up75Con el lado de la etiqueta hacia arriba1Press the POWER butt

XL-70/70C– 8 –1 Side Panel(Left/Right)1. Screw ... (A1) x8 8-12 Top Cabinet 1. Screw ... (B1) x1 8-12. Socket ...

– 9 –XL-70/70CFigure 9-1Figure 9-2Figure 9-3Figure 9-41 Speaker 1. Net Frame .... (A1) x1 9-42. Screw ...... (A2) x42. Woofer Ring