Sharp XL-55C Manual de Serviço

– 1 –XL-55/55C CONTENTSPageIMPORTANT SERVICE NOTES (FOR U.S.A. ONLY) ...

XL-55/55C– 10 –3. Tuner Test Mode (TEST 2)1. Outline of tuner (radio) test mode The tuner test mode is intended to store the adjustment and measure

– 11 –XL-55/55C3. Preset frequencies for various destinations (random preset memory)BAND16-2526 FM106.00 MHz27 FM 90.00 MHz28 FM FM 98.00 MHz29 MONO

XL-55/55C– 12 –7. Key input diagnosis Test Mode (TEST 6)When the test mode is set, the following indication appears.ERROR LISTPU-IN SW detection error

– 13 –XL-55/55CSW700 VOLUME ON—OFFSW701 POWER ON/STAND-BY ON—OFFSW702 FUNCTION ON—OFFSW703 STOP/CLEAR,TUNING DOWN ON—OFFSW704 PLAY/CD PAUSE,TUNING UP

XL-55/55C– 14 –REC MUTEQ105Q106REC 150K150KMUTE ALC + - - + 3 1 5 11128 102 IC102 BA3311L 6 7 9 NFL-INR-INNFL-OUT ALC R-OUT Q151Q152L151Q153Q171Q172R

– 15 –XL-55/55CTEQ105Q106REC STEREOSDCECD+BP MUTEP-STB P-CONTDICLDOFM ST SD123456CD LCNP605 TO CD SERVO PWB SOL U_CON 5VD-GND A_12V TAPE SW A_12V

XL-55/55C– 16 –Figure 16 BLOCK DIAGRAM (3/4)CNP702CNS605CNP605CLID SWGVSWPICK_INBLKCKMDATAMCLKMLDMRSTCD STBSTATTO MAIN SECTIONTO MAIN SECTIONTO MAIN S

– 17 –XL-55/55CFigure 17 BLOCK DIAGRAM (4/4)CNP702CNS605CNP605CLID SWGVSWPICK_INBLKCKMDATAMCLKMLDMRSTCD STBSTATNM801SLEDMOTOR NM802SPINDLEMOTORMMTRACK

XL-55/55C– 18 –ABCDEFGH123456• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.(0V)4.7V1.3V1.3V4V(2.2V)2.3V2.1V(0V)5V2.1V2.1V2.1V0V5V5V(4.3V)2.9V0V

– 19 –XL-55/55C78 9 10 11 124.8V4.8V4.8V4.8V9.6V5V4.8V4.8V4.8V4.8V4.8V4.8V4.8V4.8V4.8V4.8V4.8V4.8V4.8V4.8V4.8V0V0V0V0V13V 20V 12.3V 11.7V 20V20V 11.7V

XL-55/55C– 2 –FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFERTO THE OPERATION MANUAL.IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)B

XL-55/55C– 20 –ABCDEFGH123456• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.0V5V5V0V0V5V5V5V5V0V0V0V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V

– 21 –XL-55/55C78 9 10 11 125V5V5V5V0V0V5V5V0V0V4.6V5V0V4.3V4.3V4.3V4.3V4V5V5V5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.

XL-55/55C– 22 –• The numbers 1 to 11 are waveform numbers shown in page 30.ABCDEFGH123456• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.5

– 23 –XL-55/55C78 9 10 11 12+B+B+B+B+B+B2.6V2.6V2.6V5.1V0V2.5V4.5V4V4.7V0V0V0V0V5.1V2.5V0.2V0.3V4.8V2.6V2.6V2.7V2.7V2.7V2.7V2.7V2.7V2.7V2.7V2.7V2.4V2.

XL-55/55C– 24 –ABCDEFGH123456• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.VOLTAGE REGULATOR330P1N414833/166.8K10K10K4.7K1K33/16 KRA107 M 1N41

– 25 –XL-55/55C78 9 10 11 12CNW654T651T681F652F651CNW653SO651D658C658C659C656C657D659D656D685RLY681D653C651C654D654D652D651D657CNW651CNS651CNP652CNP70

XL-55/55C– 26 –ABCDEFGH123456RR621R617R623R364R357R362R356R350C369C366C365R361C363C360C361R351C350C353C354R393R353R352C356C351C355R355R366R383C395C384

– 27 –XL-55/55C78 9 10 11 12R152R151C121C122C102R140R115C101C105C103C104C106R103R104R105R109R110R113R132R108R114R133R134R125R126R121R123R119R117C115R1

XL-55/55C– 28 –ABCDEFGH123456R792R7D4R7D2R7E1R7D6R7D1R7D9R7D8R7D5R7D3R782R746R743R775R778R779R780R734R733R737C702R702C703R725C701R731R732R724R727R722R

– 29 –XL-55/55C• The numbers 1 to 11 are waveform numbers shown in page 30.R832R833C818C821IC802R803R811R813C830C831C834C829C838C842R805C843C84

– 3 –XL-55/55CNAMES OF PARTS1. CD Compartment2. CD Eject Button3. Volume Control4. Cassette Compartment5. Headphone Jack6. Power On/Stand-by Button7.

XL-55/55C– 30 –WAVEFORMS OF CD CIRCUITNO DISC FOCUS SEARCH FOORFDETARFFEIC804 27pinFO+IC804 26pinFO-IC801 28pinSTOP PLAY(FE)CUE(TE)REVIEW(TE)TCD-78

– 31 –XL-55/55CTROUBLESHOOTINGWhen the CD does not functionWhen the CD section does not operate when the objective lens of the optical pickup is dirty

XL-55/55C– 32 –Make 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

– 33 –XL-55/55C• Focus failure.Does the optical pickup move up and down when the disc isremoved?Is the following waveform output at the pin 32 (FE) of

XL-55/55C– 34 –• Focus servo sawtooth wave failure.Is +6.2V applied to the pins 21 and 22 (VCC) of IC804 ? Is sawtooh wave output to the pin 28 (FOO)

– 35 –XL-55/55C• HF error.YesYesIs output (tracking error signal) obtained at the pins 33 (TE)and 37 (TRCRS) of IC801 the CD TEST MODE "STEP 4&qu

XL-55/55C– 36 –• Sled motor operation failure.YesIs following sled feed signal input the pin 3 (VIN1) of IC804when FF/REW key is pressed after the CD

– 37 –XL-55/55CFUNCTION TABLE OF ICIC401 VHiLC75342M-1: Function/Volume Equalizer (LC75342M)1 DI Serial data and clock input pin for control.2 CE Chi

XL-55/55C– 38 –1-4 COM3-COM0 Output LCD common output terminal.5-7 VLC3-VLC1 — LCD power supply terminal.8 VDD — Microcomputer power supply +5V.9 OSC2

– 39 –XL-55/55CFunctionTerminal NameInput/Output54* SEG46 P63/A3 Output Power IC amplifier detect.55* SEG45 P64/A4 Output Fan control.56* SEG44 P65/A5

XL-55/55C– 4 –1 Top Cabinet 1. Screw ... (A1) x5 4-12. Socket ... (A2) x2 4-1,32 Side Panel(Left/Right)1. Screw ...

XL-55/55C– 40 –IC801 VHiMN6627482W: Servo/Signal Control (MN6627482W) (1/2)1* BCLK Output SRDATA bit clock output.2* LRCK Output L/R identification si

– 41 –XL-55/55CIC801 VHiMN6627482W: Servo/Signal Control (MN6627482W) (2/2)Terminal NamePin No. Input/OutputFunction47 DSLF Input/Output DSL loop filt

XL-55/55C– 42 –IC801 VHiMN6627482W: Servo/Signal Control (MN6627482W)STATX1X2MSELCSELPMCK(PLAY)GIO2(FCLK)SMCKBYTCK(TRVSTP)VCOFVCOF2MDATAMCLKMLDPSELRSE

– 43 –XL-55/55CIC802 VHiAN22000A-1: Head Amp. (AN22000A)1 PD APC amp input.2 LD APC amp output.3 VCC Power supply.4 RFN RF amp inverting input.5 RFOUT

XL-55/55C– 44 –LCD701: RV-LX0007SJZZ LCD DisplayFigure 44 LCD SEGMENTPinNo123456789101112131415161718192021com1com1z1h1g1a1RECh2g2a2SLEEPh3g3a3RANDOMh

XL-55/55CPARTS GUIDENOTE:Parts marked with “ ” are important for maintaining the safety of the set.Be sure to replace parts with specified ones for ma

PRICERANKDESCRIPTIONNO.PART CODENO. PARTS CODEPRICERANKDESCRIPTIONXL-55/55CINTEGRATED CIRCUITSIC101 VHIBA3126N/-1 J AF Head Selector,BA3126NIC102 VHIB

NO.PRICERANKDESCRIPTIONPARTS CODENO. PART CODEPRICERANKDESCRIPTIONXL-55/55CC319 VCCCCY1HH180J J AA 18 pF (CH),50VC320 VCKYCY1HB102K J AA 0.001 µF,50VC

PRICERANKDESCRIPTIONNO.PART CODENO. PARTS CODEPRICERANKDESCRIPTIONXL-55/55CC903 RC-GZA107AF1E J AB 100 µF,25V,ElectrolyticC904,905 VCKYCY1HF223Z J AA

NO.PRICERANKDESCRIPTIONPARTS CODENO. PART CODEPRICERANKDESCRIPTIONXL-55/55CR774~777 VRS-CY1JB102J J AA 1 kohm,1/16WR778~780 VRS-CY1JB473J J AA 47 kohm

– 5 –XL-55/55CTAPE MECHANISM SECTIONPerform steps 1 to 6 and 8 of the disassembly method toremove the tape mechanism. (See page 4.)How to remove the r

PRICERANKDESCRIPTIONNO.PART CODENO. PARTS CODEPRICERANKDESCRIPTIONXL-55/55C702 XBBSD20P03000 J AA Screw,ø2×3mm703 XBSSD26P06000 J AA Screw,ø2.6×6mm704

XL-55/55CABCDEFGH123456Figure 6 CD MECHANISM EXPLODED VIEW– 6 –307-1703304703303302704301NM802702x2306x2SW800NM801306PWB-C307-3307-2307701305

XL-55/55CFigure 7 CABINET EXPLODED VIEWABCDEFGH123456– 7 –Note: Only the unit and consumale parts are supplied as parts supply for the Tape mechanism

XL-55/55CPACKING OF THE SET (FOR U.S.A. ONLY)Setting position of switches and knobsTape Mechanism STOPCassette Holder CLOSECD Lid CLOSE: Not Replaceme

XL-55/55C–MEMO–

XL-55/55C–MEMO–

XL-55/55CCOPYRIGHT 2003 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication may be reproduced,stored in a retrieval system, or

XL-55/55C– 6 –How to remove the pickup (See Fig. 6-3)1. Remove the mechanism cover, paying attention to thepawls (A1) x 4 pcs.2. Remove the screws (A2

– 7 –XL-55/55CMECHANISM SECTION• Driving Force CheckTorque MeterSpecified ValuePlay: TW-2412 Over 80 g• Torque CheckTorque MeterPlay: TW-2111 30 to 60

XL-55/55C– 8 –2. 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

– 9 –XL-55/55CThe time display indicates always "0:00".When the following buttons are pressed in this state, the operation is executed as fo