Sharp QT-CD250H Wartungshandbuch

QT-CD250H/W– 1 –• In the interests of user-safety the set should be restored to itsoriginal condition and only parts identical to those specified shou

QT-CD250H/W– 10 –MECHANISM SECTION• Driving Force CheckPLAY: TW-2412 Over 120 gTorque MeterSpecified Value• Torque CheckTorque MeterSpecified ValuePla

QT-CD250H/W– 11 –A. CD TEST MODESet the function switch to "CD" when pressing the "REVIEW(PRESET DOWN )" button together with &quo

QT-CD250H/W– 12 –B. TUNER TEST MODESet the function switch to "TUNER" when pressing the "REVIEW(PRESET DOWN )" button together wit

QT-CD250H/W– 13 –D. VOLUME TEST MODESet the function switch to "POWER ON (TAPE PLAY, TUNER or CD)" when pressing the "REVIEW(PRESET DO

QT-CD250H/W– 14 –ABCDEFGH1234 56• The numbers 1 to 17 are waveform numbers shown in page 19.Figure 14 SCHEMATIC DIAGRAM (1/2)COR1C856100PC29 100P

QT-CD250H/W– 15 –Figure 15 SCHEMATIC DIAGRAM (2/2)78 9101112• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.+BC3020.022C8720.0047 C249100PC2040.0

QT-CD250H/W– 16 –Figure 16 WIRING OF P.W.BOARD (1/2)ABCDEFGH1234 56• The numbers 1 to 17 are waveform numbers shown in page 19.2345178961213141511

QT-CD250H/W– 17 –Figure 17 WIRING OF P.W.BOARD (2/2)78 9101112F3895AFC651C654D651D654C653D652D653C652F651T1.25A L 250VBRSW651VOLTAGE SELECTORAC220V-2

QT-CD250H/W– 18 –NOTES ON SCHEMATIC DIAGRAM 1. Tuner( ): AM modeMarking except for ( ): FM mode2. CD( ): Play modeMarking except for ( ): Stop st

QT-CD250H/W– 19 –WAVEFORMS OF CD CIRCUITNO DISC FOCUS SEARCH STOP PLAYFOO1 TMAX 1 FO+ 2SBOK2FO- 3 DMO 3FOCUS SEARCH TOC IL STOP PLAYSEL 1 TE

QT-CD250H/W– 2 –QT-CD250H for EuropeQT-CD250H for U.K.LASER KLASSE 1LUOKAN 1 LASERLAITEKLASS 1 LASERAPPARATPrecaution to be taken when replacing and s

QT-CD250H/W– 20 –TROUBLESHOOTING (CD SECTION)HOW TO USE1. Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the brush on

QT-CD250H/W– 21 –• Laser failure.YesNoCheck the laser come on when pattern cut between pin 8 (SEL) ofIC801 and pin 74 (SEL) of IC802.YesNoCheck the pe

QT-CD250H/W– 22 –• Focus servo sawtooth wave failure.Is +7.5V applied to the pins 1 and 30 (VCC) of IC803 ? Is sawtooh wave output to the pin 66 (FOO)

QT-CD250H/W– 23 –• Sled motor operation failure.YesYesIs following sled feed signal output the pin 71 (FMO) of IC802when FF/REW key is pressed after t

QT-CD250H/W– 24 –IC51 VHiLC72121/-1: Electronic Tuning (LC72121) (1/2)1 Xtal XIN Output Crystal oscillator connection.(4.5 MHz/7.2 MHz)2 Ground VSSX O

QT-CD250H/W– 25 –IC51 VHiLC72121/-1: Electronic Tuning (LC72121) (2/2)15 Local oscillation, Signal input AMIN Input Serial data input: AMIN is selecte

QT-CD250H/W– 26 –IC1 VHiTA2104BN-1: FM /AM IF MPX. (TA2104BN)Figure 26 BLOCK DIAGRAM OF ICIC202 VHiTC9260P/-1: Electronic Volume (TC9260P)2 3 4 51 7 8

QT-CD250H/W– 27 –IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (1/4)1* (OT5)S1 SEG1 Output Segment signal output to the LCD panel.2 (OT6)S2 SEG

QT-CD250H/W– 28 –IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (2/4)30 (S12)P4-1 DI Input 3-bit CMOS I/O ports.31* (SO/S11/ DO Output DI: Tuner

QT-CD250H/W– 29 –IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (3/4)63 SBAD SBAD Input/Output Subbeam add signal input pin.64 TEI TEI Input/Out

QT-CD250H/W– 3 –IMPORTANT SERVICE NOTES (QT-CD250H FOR U.K. ONLY)PROBEACOUTUNITSHORT-CIRCUTAC POWERSUPPLY CORDCONNECT THE PROBETO GND OF CHASSISSCREW

QT-CD250H/W– 30 –IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (4/4)91 /HOLD HOLD Input This pin is used to input a signal that requests or cle

QT-CD250H/WPARTS GUIDENOTE:Parts marked with “ ” are important for maintaining the safety of the set.Be sure to replace parts with specified ones for

PRICERANKDESCRIPTIONNO.PARTS CODE NO. PARTS CODEPRICERANKDESCRIPTIONQT-CD250H/W– 1 –INTEGRATED CIRCUITSIC1 VHITA2104BN-1 J AQ FM/AM IF MPX.,TA2104BNIC

NO.PRICERANKDESCRIPTIONPARTS CODENO. PARTS CODEPRICERANKDESCRIPTIONQT-CD250H/W– 2 –C235~238 RC-GZA107AF1A J AB 100 µF,10V,ElectrolyticC239,240 VCQYKA1

PRICERANKDESCRIPTIONNO.PARTS CODE NO. PARTS CODEPRICERANKDESCRIPTIONQT-CD250H/W– 3 –R848 VRD-ST2CD103J J AA 10 kohm,1/6WR849 VRD-ST2CD183J J AA 18 koh

NO.PRICERANKDESCRIPTIONPARTS CODENO. PARTS CODEPRICERANKDESCRIPTIONQT-CD250H/W– 4 –249 JKNBZ0042SJSA J AB Button,CD Eject250 MLEVP0003SJZZ J AB Lever,

QT-CD250H/WABCDEFGH123456Figure 5 CD MECHANISM EXPLODED VIEW– 5 –701304 701302301702303M702703x2305x2SW702M701305PWB-B704306

QT-CD250H/WABCDEFGH123456Figure 6 CABINET EXPLODED VIEW– 6 –Note: Only the unit and consumale parts are supplied as parts supply for the Tape mechanis

QT-CD250H/WPACKING METHOD (QT-CD250H FOR U.K. ONLY)• Setting position of switches and knobs– 7 –1. Polyethylene Bag, Unit SSAKH0001SJZZ2. Operation Ma

QT-CD250H/W— M E M O —– 8 –

QT-CD250H/W– 4 –NAMES OF PARTSIllustration: QT-CD250W2627282930VOLTAGESELECTORAC110V - 127VAC220V - 240V311234567810111213141516171821 222324201925932

QT-CD250H/WNo part of this publication may be reproduced,stored in a retrieval system, or transmitted inany form or by any means, electronic, mechanic

QT-CD250H/W– 5 –1● 6 “D” size batteries (UM/SUM-1, R20, HP-2 or similar)● Batteries are not included.5461321 Preparation for use Headphones Volum

QT-CD250H/W– 6 –35Recording from CDs4562Label side up.To stop recording314Listening to the radioTUNINGPLAY / PAUSETUNER Aerial adjustmentFMAM1After us

QT-CD250H/W– 7 –FM/AM INTERVAL (SPAN) (For QT-CD250W Only)[10 kHz ➞ 9 kHz][9 kHz ➞ 10 kHz]The International Telecommunication Union (ITU)has establish

QT-CD250H/W– 8 –1 Top Cabinet/ 1. Screw ... (A1) x7 8-1Front Cabinet 2. Socket ... (A2) x13. Screw ...

QT-CD250H/W– 9 –TAPE MECHANISM SECTIONPerform steps 1 to 6 of the disassembly method to remove thetape mechanism. (See page 8.)How to remove the recor