Sharp QT-CD161H Wartungshandbuch

QT-CD161/141– 1 –CONTENTSPageIMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)...

QT-CD161/141– 10 –WAVEFORMS OF CD CIRCUIT1135ms0.50 VIC801 20 F.E15ms5.0 VIC801 54 DRFSTOP PLAYFOCUS SERCH20.5ms1.00 V HF0.5ms5.0 V HFL0.5ms5.0

QT-CD161/141– 11 –Figure 11 BLOCK DIAGRAM (1/3)6251 3746563955385433533211842~+5VFOCUS COILTRACKING COILPICKUP UNIT1828291332526520621495052535154Q804

QT-CD161/141– 12 –Figure 12 BLOCK DIAGRAM (2/3)65821011125189612IC202LA4597POWER AMP.LVOLUMEX-BASSSW202A,BVR201A,BSTANBYQ201Q202Q251R213IC203KIA7808PV

QT-CD161/141– 13 –Figure 13 BLOCK DIAGRAM (3/3)X INFM IN X OUT VSS AM IN IF IN VTAM MIX OUTX14.5MHzDOUTDATAPERIDOOF1 CF2 AM IF INAM OSCAM M

QT-CD161/141– 14 –• The numbers 1 to 12 are waveform numbers shown in page 10.Figure 14 SCHEMATIC DIAGRAM (1/6)ABCDEFGH1234 56R81333KR8301KC8040.

QT-CD161/141– 15 –Figure 15 SCHEMATIC DIAGRAM (2/6)• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.78 9101112R87610KR873100C890100/10C86710/16 R87

QT-CD161/141– 16 –Figure 16 SCHEMATIC DIAGRAM (3/6)• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.ABCDEFGH1234 56C2520.022R2R2C1520.039(ML)C1510.

QT-CD161/141– 17 –Figure 17 SCHEMATIC DIAGRAM (4/6)78 9101112R15222KR15122KSO601 ACSOT601POWER TRANSFORMERC6540.022(Z)C6510.022(Z)D651IN4004D6521N4004

QT-CD161/141– 18 –Figure 18 SCHEMATIC DIAGRAM (5/6)• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.ABCDEFGH1234 568 7 3 2 6 5 4 9 1 C120.022C70.00

QT-CD161/141– 19 –Figure 19 SCHEMATIC DIAGRAM (6/6)78 9101112R519 560 C5120.022C5130.022R510 1KR509 1KR5321KR534 1KR535 1KR536 1KR537 1KR538 1KR53115K

QT-CD161/141– 2 –FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFERTO THE OPERATION MANUAL.IMPORTANT SERVICE NOTES (FOR U.S.A. ONL

QT-CD161/141– 20 –Figure 20 WIRING OF P.W.BOARD (1/3)• The numbers 1 to 12 are waveform numbers shown in page 10.ABCDEFGH1234 56ABDFCEHGBA12323451

QT-CD161/141– 21 –Figure 21 WIRING OF P.W.BOARD (2/3)78 9101112F3895AF51BKWHWHWHWHBRGYGYGYGYGYBKWHWHWHWHWHWHWHR806BI802C807R810RBI801C848R842R25 C36 C

QT-CD161/141– 22 –Figure 22 WIRING OF P.W.BOARD (3/3)ABCDEFGH1234 56T601POWERTRANSFORMER(230)(208)(237)TERMINAL PWB-A3RDRDORORORORSO601AC SOCKETAC 120

QT-CD161/141– 23 –TROUBLESHOOTING (CD SECTION)When the CD does not functionWhen the CD section does not operate when the objective lens of the optical

QT-CD161/141– 24 –When the CD does not functionWhen the CD section does not operate When the objective lens of the optical pickup is dirty,this sectio

QT-CD161/141– 25 –Check the laser diode driver.• Playback can only be performed when a discis loaded.Does the DRF signal change from "L" to

QT-CD161/141– 26 –The turntable fails to rotate or rotates at high speed.YesCheck the periphery of IC801 pins 23 to 27, pin 39 and pin 40,IC802 pin 12

QT-CD161/141– 27 –1,2 VL2 VL2 Input LCD bias setting power input terminal.3 P67/AN7 LID-SW (CD) Input CD cover position detection SW input terminal.&q

QT-CD161/141– 28 –44* P14/SWG28 N.C No connect.45* P13/SEG27 N.C No connect.46* P12/SEG26 N.C No connect.47* P11/SEG25 N.C No connect.48 P10/SEG24

QT-CD161/141– 29 –PARTS GUIDENOTE:Parts marked with “ ” are important for maintaining the safety of the set.Be sure to replace parts with specified on

QT-CD161/141– 3 –NAMES OF PARTS1. Cassette Compartment2. CD Compartment3. (TAPE) Record Button: 4. (TAPE) Play Button: 5. (TAPE) Rewind Button: 6. (TA

PRICERANKDESCRIPTIONNO.PARTS CODE NO. PARTS CODEPRICERANKDESCRIPTIONQT-CD161/141VARIABLE CAPACITORTC1 RTO-H1003SJZZ J AG TrimmerVIBRATORSX1 RCRSB0001S

NO.PRICERANKDESCRIPTIONPARTS CODENO. PARTS CODEPRICERANKDESCRIPTIONQTCD161/141C231,232 VCQYKA1HM104K J AB 0.1 µF,50V,MylarC233,234 RC-GZA477AF1A J AC

PRICERANKDESCRIPTIONNO.PARTS CODE NO. PARTS CODEPRICERANKDESCRIPTIONQT-CD161/141R546 VRD-ST2CD153J J AA 15 kohms,1/6WR547 VRD-ST2CD332J J AA 3.3 kohms

NO.PRICERANKDESCRIPTIONPARTS CODENO. PARTS CODEPRICERANKDESCRIPTIONQTCD161/141231 PRDAR0001SJZZ J AD Heat Sink232 LHLDA1001SJZZ J AC Holder,Bar Antenn

QT-CD161/141ABCDEFGH123456Figure 5 CD MECHANISM EXPLODED VIEW– 5 –701304 701302301702303M701703x2305x2SW702M702305PWB-B704306

QT-CD161/141ABCDEFGH123456Figure 6 CABINET EXPLODED VIEW– 6 –NOTE: The parts of cassette mechanism which are supplied are only the unit and consumable

QT-CD161/141PACKING OF THE SET (FOR U.S.A. ONLY)• Setting position of switches and knobsTape Mechanism Control STOP STATETUNING LOWPOWER/FUNCTION OFF/

QT-CD161/141– 4 –1 Rear Cabinet 1. Screw ... (A1) x10 4-12. Socket ... (A2) x1 4-22 Top Cabinet 1. Knob ...

QT-CD161/141– 5 –CD MECHANISM SECTIONPerform steps 1, 2, 3 and 5 of the disassembly method toremove the CD mechanism.How to remove the pickup (See Fig

QT-CD161/141– 6 –MECHANISM SECTION• Driving Force CheckPLAY: TW-2412 Over 120 gTorque MeterSpecified Value• Torque CheckTorque MeterSpecified ValuePla

QT-CD161/141– 7 –TURNING ON THE TEST MODEThe types of test mode for this microcomputer and specific test mode turning-on procedure are as follows. Onl

QT-CD161/141– 8 –In the tuner test mode the band is FM, and the mode is FM STEREO in case of start-up.As with the ordinary mode, when the PRESET key

QT-CD161/141– 9 –NOTES ON SCHEMATIC DIAGRAM 1. Tuner( ): AM modeMarking except for ( ): FM mode2. CD( ): Play modeMarking except for ( ): Stop st