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Qt-90w Service Manual Model Stereo Radio Cassette Recorder

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QT-90W SERVICE MANUAL No. S6143QT90W/// STEREO RADIO CASSETTE RECORDER MODEL QT-90W • In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified should be used. CONTENTS Page SPECIFICATIONS ............................................................................................................................................................. 1 VOLTAGE SELECTION ..................................................................................................................................................... 1 AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................. 2 NAMES OF PARTS ........................................................................................................................................................... 2 HOW TO SET THE POINT "0" ON TUNER DIAL MEMORY ............................................................................................. 2 DISASSEMBLY .................................................................................................................................................................. 3 REMOVING AND REINSTALLING THE MAIN PARTS ..................................................................................................... 4 ADJUSTMENT ................................................................................................................................................................... 6 NOTES ON SCHEMATIC DIAGRAM ................................................................................................................................ 9 TYPES OF TRANSISTOR AND LED ................................................................................................................................. 9 VOLTAGE .......................................................................................................................................................................... 9 SCHEMATIC DIAGRAM .................................................................................................................................................. 10 WIRING SIDE OF P.W.BOARD ....................................................................................................................................... 12 BLOCK DIAGRAM OF IC ................................................................................................................................................. 14 PARTS GUIDE/EXPLODED VIEW SPECIFICATIONS Radio General Power source Power consumption Output power Speakers Output terminal Input terminal Dimensions Weight AC 110-127/220-240 V, 50/60 Hz DC 15 V [“D” size (UM/SUM-1, R20 or HP-2) battery x 10] 40 W MPO: 36 W (18 W + 18 W) (AC operation, 10 % T.H.D) RMS: 20 W (10W + 10W) (DC operation, 10 % T.H.D) 8 cm (3-1/8”) full range speaker x 4 Headphones: 16 - 50 ohms (recommended: 32 ohms) Mixing microphone: 600 ohms Line input: 350 mV/47 kohms Width: 520 mm (20-1/2”) Height: 191 mm (7-1/2”) Depth: 216 mm (8-1/2”) 4.7 kg (10.4 lbs.) without batteries Frequency range FM: 88 - 108 MHz SW1: 2.3 - 7.3 MHz SW2: 7.3 - 22 MHz MW: 526.5 - 1,606.5 kHz Tape recorder Frequency response Signal/noise ratio Wow and flutter Motor Bias system Erase system 60 - 12,000 Hz (Normal tape) 40 dB 0.3 % (WRMS) DC 12 V electric governor AC bias Magnet erase Specifications for this model are subject to change without prior notice. VOLTAGE SELECTION Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage as follows. Slide the selector with a screwdriver to the appropriate voltage number. (AC 110 - 127 V or AC 220 - 240 V) SHARP CORPORATION –1– This document has been published to be used for after sales service only. The contents are subject to change without notice. QT-90W FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. AC POWER SUPPLY CORD AND AC PLUG ADAPTOR QACCA0004AW00 QPLGA0003AWZZ QACCB0012AW00 QACCE0007AW00 QPLGA0004AWZZ QACCL0002AW00/QACCL0008AW00 NAMES OF PARTS 01. Function/Beat Cancel Switch 02. Cassette Compartment 03. Record Button 04. Play Button 05. Rewind Button 06. Fast Forward Button 07. Stop/Eject Button 08. Pause Button 09. Volume Control 10. Band Selector 11. Extra Bass Control 12. Graphic Equalizer Controls 13. Built-in Microphone 14. Sound Level Meter 15. Surround Button 16. Fine Tuning Control 17. Tuning Control 18. Mixing Microphone Socket 19. Line Input Sockets 20. AC Voltage Selector 21. AC Input Socket 22. Battery Compartment 23. Headphone Socket 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 20 21 18 19 23 22 HOW TO SET THE POINT "0" ON TUNER DIAL MEMORY 1. Remove the front cabinet and main PWB. (Refer to page 3, of disassembly section.) 2. Turn the gear dial in the arrowed direction until it stops so that the " " mark comes to the front of main PWB. 3. When the tuning knob is set at 2, adjust it from above so that its "0" point rib comes to the right of "0" point rib of the dial drum when you face the unit. 4. Check the tuning display label by turning the tuning knob. The frequency band will be FM 88 - 108 MHz when the dial is turned counter-clockwise. 5. Reassemble the front cabinet. Gear Dial Top Side Mark “ ” 2 Mark “ ” Dial Drum Tuning Knob Tuning Knob “ 0 ” Point Rib Main PWB Front Side Dial Drum “0” Point Rib 3 “0” Point of Tuning Display Dial Drum Tuning Knob Front Side Tuning Knob Bracket Dial Drum “0” Point Rib Tuning Knob “0” Point Rib Main PWB Figure 2 –2– QT-90W DISASSEMBLY Caution on Disassembly Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance: 1. Take cassette tape out of the unit. 2. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit. 3. Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing the unit, be sure to rearrange the leads where they were before disassembling. 4. Take sufficient care on static electricity of integrated circuits and other circuits when servicing. STEP REMOVAL PROCEDURE FIGURE 1 Rear Cabinet 1. Battery Lid ............ (A1) x1 2. Screw ................... (A2) x6 3. Screw ................... (A3) x4 3-1 2 Front Cabinet 1. Knob ..................... (B1) x1 2. Nut ........................ (B2) x1 3. Socket .................. (B3) x4 3-1 3 Jack PWB 1. Socket .................. (C1) x2 2. Screw ................... (C2) x2 (B1)x1 (B2)x1 (A2)x6 ø3x30mm Rear Cabinet 3-2 Volume PWB 1. Socket .................. (D1) x1 3-2 5 Battery PWB 1. Socket .................. (E1) x1 2. Hook ..................... (E2) x1 3-2 6 Headphones PWB 1. Socket .................. (F1) x2 2. Screw ................... (F2) x1 3-2 7 Main PWB with Tape Mechanism 1. Screw ................... (G1) x2 2. Screw ................... (G2) x1 3-2 8 Main PWB 1. Socket .................. (H1) x2 2. Screw ................... (H2) x4 3. Solder ................... (H3) x2 3-3 9 Tape Mechanism 1. Open the cassette holder. 2. Screw .................... (J1) x4 4-1 10 Surroud PWB 1. Screw ................... (K1) x3 4-2 11 Graphic Equalizer 1. Screw ................... (L1) x2 PWB 4-2 (A3)x4 ø3x12mm (A1)x1 Figure 3-1 Headphones PWB (F1)x1 Tape Mechanism Handle (G1)x2 ø3x12mm 3-2 4 Front Cabinet Volume PWB (F2)x1 ø4x14mm Rear Cabinet (E2)x1 Battery PWB (E1)x1 (F1)x1 (D1)x1 (B3)x1 (C1)x1 (C1)x1 (B3)x1 (B3)x1 (C2)x2 ø4x14mm Main PWB (H2)x4 ø3x10mm How to attach the tuning display label (See Fig. 3-4.) Reference (H1)x2 1. Start Stick Label Matching With Base Line Base Line (H3)x2 Dial Drum 10 0 1 1 8 9 88 2 7. 60 8 0 22 3 0 14 104 7 6 5 4 3 92 0 54 2.3 3 00 .0 10 6.0 120 0 0 96 7. 6 6 19 0 . 0 10 0 00 800 7 .0 2 5.0 5 2 . 3. 4.0 8 15.0 10.0 12.0 Tuning Display Label (G2)x1 ø3x8mm (B3)x1 Figure 3-2 10 Lug Wire Tape Mechanism Main PWB 2. This Line Must Be Stick Matching Figure 3-3 Figure 3-4 –3– Jack PWB QT-90W Graphic Equalizer PWB Tape Mechanism Front Cabinet Stop/Eject Buttom Push Open (L1)x2 ø2.6x8mm Cassette Holder (J1)x4 ø3x10mm (K1)x3 ø2.6x8mm Surround PWB Figure 4-2 Figure 4-1 REMOVING AND REINSTALLING THE MAIN PARTS TAPE MECHANISM SECTION Perform steps 1 to 9 of the disassembly method to remove the tape mechanism. (See page 3.) How to remove the record / playback and erase heads (See Fig. 4-3.) Hook (A2)x2 1. Remove the screws (A1) x 2 pcs., to remove the record/ playback head. 2. Remove the hooks (A2) x 2 pcs., toward the center position as shown in Fig. 4-3. and then extract the erase head upward. Note: After replacing the heads and performing the azimuth adjustment, be sure to apply screwlock. (A1)x2 ø2x7mm Lug Wire Record/Playback Head Push PLAY Button Erase Head Figure 4-3 How to remove the pinch roller (See Fig. 4-4.) (B1)x1 ø1.5x2.5mm 1. Remove the screw (B1) x 1 pc., and remove the pinch roller upwards. Pinch Roller Figure 4-4 –4– QT-90W How to remove the belts (See Fig. 5-1.) Motor 1. Remove the main belt (C1) x 1 pc., from the motor pulley. 2. Remove the FF/REW belt (C2) x 1 pc., from the REW/FF roller. 3. Put on the belts in the reverse order of removal. Note: When putting on the belt, ascertain that the belt is not twisted, and clean it. Main Belt (C1)x1 Flywheel Motor Pulley REW/FF Roller FF/REW Belt (C2)x1 Figure 5-1 (D1)x1 ø2x4mm How to remove the motor (See Fig. 5-2.) Motor 1. Remove the main belt. (See Fig. 5-1.) 2. Remove the screws (D1) x 2 pcs., to remove the motor bracket. 3. Remove the screws (D2) x 2 pcs., to remove the motor. Note: When mounting the motor, pay attention to the motor bracket angle. Motor Bracket (D1)x1 ø2x4mm (D2)x2 ø2.6x1.6mm Special Screw Motor Bracket Motor Figure 5-2 How to remove the flywheel (See Fig. 5-3.) Driver (E1)x 1 Stop Washer Washer 1. Remove the belt. (See Fig. 5-1.) 2. Remove the stop washer (E1) x 1 pc., with a small precision screwdriver to extract the flywheel from the capstan metal. Note: When the stop washer is deformed or damaged, replace it with a new one. Washer Flywheel How to reinstall the parts Install each part in the reverse order of the removal with care. Figure 5-3 –5– QT-90W ADJUSTMENT TUNER SECTION fL: Low-range frequency fH: High-range frequency FM Section Step 1 Alignment Frequency FM IF: 10.7 MHz (T108) FM DETECTION: (T106) 2 Test Equipment Signal-in Signal-out (1) FM IF sweep generator Inject the IF sweep signal (2) Alignment oscilloscope (3) Power supply through 300 pF capacitor to point TP2 FM BAND (1) FM RF sweep COVERAGE fH: generator (2) Alignment 108.2 MHz Signal are taken out from point TP3 Inject the RF signal directly to Remark Adjust Adjust T106, T108 and repeat to get (1) Band SW in FM. (2) VOL. & TONE best "S" curve with center at 10.7 MHz control in MIN. position (3) Tune P.V.C. to high end Same as step 1 Adjust P.V.C. (TC1) get MAX. output Same as step 1 Same as step 1 Adjust L103 to get MAX. output end Adjust P.V.C. (TC2) to get MAX. output 106 MHz point TP1 oscilloscope (3) Power supply 3 FM BAND COVERAGE fL: 87.4 MHz Same as step 2 Same as step 2 4 Repeat step 2, 3 until no further improvement can be made. 5 FM TRACKING fH: 106 MHz Same as step 2 6 FM TRACKING fL: 90 MHz Same as step 2 7 Repeat step 5, 6 and then step 2, 3, 5, 6 until no further improvement can be made. Same as step 2 Same as step 1 Same as step 2 Same as step 1 Tune P.V.C. to low Tune P.V.C. to Adjust L102 to get MAX. Tune P.V.C. to output 90 MHz FM Stereo Section Step 1 Alignment Frequency VCO: 75 kHz Test Equipment Signal-in Signal-out (1) Frequency counter Inject MONO (2) Power supply signal at 98 MHz (3) FM Signal generator Through test circuit as Fig 6. directly to point TP1 and ground Pin 13 of IC102 Adjust Adjust VR102 let Frequency counter value: 76 K ± 200 Hz. Pin 21 of IC102 D FET: 2SK212 (or other 2SK type FET.) G 10 pF S 0.1 µF 1M ohm 10K ohm Figure 6 –6– To frequency counter Remark (1) FM and stereo position (2) Tune radio to 98 MHz QT-90W MW Section Step Alignment Frequency 1 MW IF: 455 kHz Test Equipment (1) AM IF sweep generator with loop antenna (2) Alignment oscilloscope (3) Power supply 2 Signal-in Signal-out Let the MW ANT coil close to the generator ANT. (1) MW sweep generator with 3 MW BAND COVERAGE fL: 515 kHz Same as step 2 4 Repeat step 2, 3 until no further improvement can be made. 5 MW BAND Same as step 2 COVERAGE fH: 1,400 kHz Same as step 1 MW TRACKING Same as step 2 fL: 600 kHz Same as step 1 7 Take out the signal Adjust T107 get MAX. from point TP4 output at 455 kHz Remark (1) Band SW in MW position (2) VOL. control in MIN. position (3) Tune P.V.C. to high end MW TRACKING fH: 1,650 kHz 6 Adjust Same as step 1 Same as step 1 antenna (2) Alignment oscilloscope (3) Power supply Adjust P.V.C. (TC3) get MAX. output at Same as step 1 1,650 kHz Same as step 1 Same as step 1 Adjust T103 to get Tune P.V.C. to low MAX. output at 515 kHz end Same as step 1 Adjust P.V.C. (TC4) get MAX. output at 1,400 kHz Same as step 1 Adjust L109 get MAX. output at 600 kHz Tune P.V.C. to 1.400 kHz Tune P.V.C. to 600 kHz Repeat step 5, 6 and then step 2, 3, 5, 6 until no further improvement can be made. SW1 Section Step 1 2 Alignment Frequency Test Equipment SW1 BAND (1) SW1 sweep COVERAGE fH: generator with 7.4 MHz antenna SW1 BAND COVERAGE fL: 2.25 MHz Signal-in Signal-out Let the MW ANT coil close to the generator ANT. (2) Alignment oscilloscope (3) Power supply point TP1 Same as step 1 Same as step 1 Adjust Take out the signal Adjust CT102 get MAX. from point TP4 output at 7.4 MHz (1) Band SW in SW1 position (2) VOL. control in MIN. position (3) Tune P.V.C. to high end Same as step 1 Adjust T104 get MAX. output at 2.25 MHz 3 Repeat step 1, 2 until no further improvement can be made. 4 SW1 TRACKING fH: 6 MHz Same as step 1 Same as step 1 Same as step 1 Adjust CT104 get MAX. output at 6 MHz 5 SW1 TRACKING fL: 2.6 MHz Same as step 1 Same as step 1 Same as step 1 Adjust T101 get MAX. output at 2.6 MHz 6 Remark Tune P.V.C. to low end Tune P.V.C. to 6 MHz Tune P.V.C. to 2.6 MHz Repeat step 4, 5 and then step 1, 2, 4, 5 until no further improvement can be made. SW2 Section Step 1 Alignment Frequency Test Equipment SW2 BAND (1) SW2 sweep COVERAGE fH: generator 22.5 MHz (2) Alignment Signal-in Signal-out Inject the RF signal directly to point TP1 Adjust Take out the signal Adjust CT101 get MAX. from point TP4 output at 22.5 MHz oscilloscope (3) Power supply 2 SW2 BAND COVERAGE fL: 7.2 MHz Same as step 1 Same as step 1 Repeat step 1, 2 until no further improvement can be made. 4 SW2 TRACKING fH: 19 MHz Same as step 1 SW2 TRACKING fL: 8.5 MHz Same as step 1 6 (1) Band SW in SW2 position (2) VOL. control in MIN. position (3) Tune P.V.C. to high end 3 5 Remark Same as step 1 Same as step 1 Same as step 1 Same as step 1 Same as step 1 Repeat step 4, 5 and then step 1, 2, 4, 5 until no further improvement can be made. –7– Tune P.V.C. to low Adjust T105 get MAX. output at 7.2 MHz end Adjust CT103 get MAX. output at 19 MHz 19 MHz Adjust T102 get MAX. output at 8.5 MHz 8.5 MHz Tune P.V.C. to Tune P.V.C. to MW TRACKING fL VCO IC201 VR102 TP3 T106 13 17 18 MW BAND COVERAGE fL TP4 21 24 12 IC102 FM DETECTION T103 MW IF 1 FM IF T104 T107 CT101 fL SW2 BAND fH COVERAGE IC101 TP6 1 L102 TC1 CT104 CT103 T102 fL FM fH TRACKING TC2 TC3 TC4 fH SW2 fL TRACKING ROD ANTENNA fL FM BAND fH COVERAGE L103 fL SW1 TRACKING fH T105 TP2 9 8 T108 T101 fL SW1 BAND fH COVERAGE CT102 S201 RECORD/PLAYBACK TP5 T201 BIAS OSCILLATION L109 MW BAR ANTENNA R227 C220 C221 QT-90W MW BAND COVERAGE fH TUNER P.V.C. MW TRACKING fH TP1 MAIN PWB Figure 8-1 ADJUSTMENT POINTS MECHANISM SECTION TAPE Section Step Item Connection Condition Adjust Output Head adjustment Playback test tape MTT-113 6.3 kHz Connect VTVM and oscilloscope to speaker output Head fixing screw (see Fig 8-3.) Adjust to get MAX. audio output 2 Bias Frequency adjustment Record position Connect frequency counter to TP5 and ground Adjust T201 (Bias Oscillation) 80 kHz ± 1 kHz 3 Beat cancel Record position Same as step 3 S201 from playback to record 75 kHz ± 0.5 kHz SW601 TAPE MAIN BIAS OSCILLATION T201 REC 4 3 2 1 1 2 3 4 CON602 S201 RECORD/PLAYBACK IC201 TP5 R227 C220 C221 1 CN602 Head fixing screw M601 TAPE MOTOR Record/ Playback Head CON201 CN201 1 2 3 4 PLAY BACK 1 2 3 4 Tape Mechanism TAPE RECORD/ PLAYBACK HEAD Erase Head MAIN PWB ERASE HEAD Figure 8-3 Figure 8-2 ADJUSTMENT POINTS –8– QT-90W NOTES ON SCHEMATIC DIAGRAM • Resistor: To differentiate the units of resistors, such symbol as K and M are used: the symbol K means 1000 ohm and the symbol M means 1000 kohm and the resistor without any symbol is ohm-type resistor. Besides, the one with “Fusible” is a fuse type. • Capacitor: To indicate the unit of capacitor, a symbol P is used: this symbol P means pico-farad and the unit of the capacitor without such a symbol is microfarad. As to electrolytic capacitor, the expression “capacitance/withstand voltage” is used. (CH), (TH), (RH), (UJ): Temperature compensation (ML): Mylar type (P.P.): Polypropylene type • Schematic diagram and Wiring Side of P.W.Board for this model are subject to change for improvement without prior notice. • Parts marked with “ ”( ) are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set. POSITION DESCRIPTION REF. NO S101 BAND SELECTOR FM—MW—SW1—SW2 S201 RECORD/PLAYBACK REC—P.B. S301 FUNCTION/ BEAT CANCEL LINE S501 VOLTAGE SELECTOR AC 220-240 V— AC 110-127 V SW501 SURROUND OFF—ON SW601 TAPE MAIN OFF—ON TYPES OF TRANSISTOR AND LED FRONT VIEW FRONT VIEW FRONT VIEW E C B 2SC945 SS8550 • The indicated voltage in each section is the one measured by Digital Multimeter between such a section and the chassis with no signal given. FRONT VIEW E B C 3DA8050 CSL-326G3GTH 523HD VOLTAGE IC101: LA1186N [FM] 1 2 3 4 Pin No. 0.9V 1.5V 5.3V 0V Voltage 5 0V 6 7 5.3V 0V IC102: LA1805 [FM] 1 2 3 4 5 6 Pin No. 1.5V 1.5V 5.5V 2.2V 1.5V 0V Voltage Pin No. Voltage Pin No. Voltage Q201: 3DA8050 2 3 Pin No. 1 Voltage E: 7V B: 6.7V C:7.6V 8 0V Q205: 2SC945 2 3 Pin No. 1 Voltage E: 0V C: 3.5V B:0.5V 10 2V 11 4.8V 12 0.8V 13 14 15 16 17 18 19 20 21 22 1.1V 1.5V 1.5V 1.2V 2.3V 0.22V 0.12V 5.5V 5.5V 0V 23 1.6V 24 0.8V IC102: LA1805 [MW/SW1/SW2] 1 2 3 4 5 6 Pin No. 1.55V 1.55V 6.7V 0.8V 1.55V 0V Voltage 13 0V 7 0V 8 9 4.7V 5.3V 7 0V 8 0V 9 2V 9 2V 10 2V 11 12 6.5V 0.8V 14 15 16 17 18 19 20 21 22 23 24 1.65V 1.1V 1.2V 1.65V 0.8V 0.55V 6.7V 6.5V 1.6V 1.6V 1.6V IC201: BA3313L [PLAYBACK] Pin No. 1 2 3 Voltage 2.7V 0.25V 6.6V 4 0V IC201: BA3313L [REC] 1 2 3 4 Pin No. 2.8V 0.26V 6.4V 0V Voltage 5 6 6.9V 0V 5 6 6.8V 0V IC401/IC402: BA5415A 1 2 3 4 5 Pin No. 15V 7.7V 15V 0.6V 5V Voltage Q601: 3DA8050 2 3 Pin No. 1 Voltage E:7.5V B:17V C:8.2V 7 0V 7 0V 6 7 5.2V 15V 8 0V 9 0V 10 11 5.2V 0V 12 3V 8 0V 9 0V 10 11 0.265V 0V 12 3V 8 0V 9 10 11 0.6V 15V 7.8V 12 0V Q602: SS8550 2 3 Pin No. 1 E: 17V C: 17V B:17V Voltage –9– Q207: SS8550 2 3 Pin No. 1 Voltage E: 7.5V C: 7.5V B: 0V Q209: 2SC945 2 Pin No. 1 Voltage E: 0V C: 0V B: 5V Q301: 2SC945 2 Pin No. 1 Voltage E: 0V C: 4V 3 B:0.7V Q303: 2SC945 2 Pin No. 1 Voltage E: 0V C: 0V 3 B: 5V Q304: 2SC945 Pin No. 1 2 Voltage E: 0V C: 0V 3 B: 5V 3 Q305/Q306: 2SC945 2 3 Pin No. 1 Voltage E: 0V C: 4V B:0.7V Q603: SS8550 2 3 Pin No. 1 Voltage E: 17V C: 17V B: 0V QT-90W TC1 7 8 9 12 R204 39 R201 3.9K R205 220K H C134 470P C133 3.3/50 C132 3.3/50 DET OUT IF AD MPX IN MO/ST VCO L-CH R-CH AM/ FM N.C. C129 1/50 C128 1/50 P S201-E R246 22K R256 10K C318 47/16 LINE FM(MONO)/BEAT C319 47/16 FM(ST) S301-E TAPE (STAND-BY) C320 47/16 R363 10K D301 1N4148 D302 1N4148 D303 1N4148 R361 10K R362 10K +B Q601 3DA8050 R601 560 +B S301 FUNCTION/ BEAT CANCEL S201 RECORD/ PLAYBACK R249 120 C225 47/16 C618 0.1 SW601 TAPE MAIN C612 100/16 R247 22K C613 100/16 C220 0.0068(ML) R S201 PECORD/ PLAYBACK R210 1.5K C614 0.1 R227 22K P ZD601 TZX8V2C R255 10K R R R252 18K PLAY 2 M601 TAPE MOTOR • NOTES ON SCHEMATIC DIAGRAM can be found on page 9. 2 3 4 Figure 10 SCHEMATIC DIAGRAM (1/2) – 10 – 5 3 M P 1 4 CN602 ERASE HEAD Q209 2SC945 BIAS OSCILLATION Q201 3DA8050 R228 BIAS 10 OSCILLATION C231 0.018 (ML) C221 0.022(ML) S201-H P R C261 33P(CH) C203 10/16 T201 C217 47P(CH) S201-G CN201 CON201 R-CH D201 R214 1N4148 330 R209 1.5K C207 4.7/50 TP5 1 C135 0.0082(ML) R120 2.7K 11 P RECORD/ PLAYBACK HEAD L-CH 2 AM IN 10 C260 680P C205 0.022(ML) R203 39 R254 120K C201 0.0015(ML) P P FILTER Q304 2SC945 S201-I 6 OUT2 5 NF2 4 R207 6.8K IN2 3 R208 6.8K R321 6.8K R315 X-BASS 10K CONTROL R253 120K VCC 2 R251 18K 1 FM DET +VCC R233 22K R222 22K GND 1 R S201-B S201-F C211 0.0022 (ML) C202 0.0015(ML) S201-D S201-A R202 3.9K C344 1/50 R218 150K IC201 PLAYBACK/RECORD PRE AMP. & CONTROL BA3313L GND IC201 BA3313L R C343 1/50 R314 10K X-BASS R320 CONTROL 6.8K R217 150K C214 220/16 C210 0.0082 (ML) Q303 2SC945 C224 Q205 1/50 2SC945 MIXING MIC PRE AMP. R258 47K R S201-C R235 680K C223 1/50 TAPE(STAND-BY) C257 10/16 1 S301 FUNCTION/ BEAT CANCEL IN1 1 FM(ST) C259 680P 2 R211 18K 2 C130 0.02 LINE FM(MONO)/BEAT S301-B C213 47/16 3 2 P P S201 RECORD/ PLAYBACK 3 S101-B +B N.C. 4 3 F 4 SW2 R116 2.2K NF1 4 R212 18K 3 MW SW1 +B R226 4.7K R215 47K 5 R 4 R117 10 R114 2.2K C122 0.1 R221 330 R248 10K C215 0.01 5 R243 2.2K R245 2.2K C212 0.0022(ML) TAPE 3 CF102 2 AM IF C120 10/16 SWITCHING Q207 SS8550 C237 47/16 C209 0.0082 (ML) G C131 1500P R121 3.9K C142 100/16 AM RF AGC C124 22/16 S101 BAND SELECTOR S101 BAND FM SELECTOR R123 100 R244 27K C227 10/16 R 1 11 12 R242 27K R257 47K 1 10 SW1 C258 C204 33P(CH) 10/16 2 1 CN202 2 1 CON203 R240 1K R234 4.7K C233 0.47/50 9 C125 0.015(ML) R109 22K CN203 CON201A 5 VR102 10K(B) VCO R119 15K 3 3 2 1 CN201A 2 1 FM(ST) T105 SW2 OSCILLATION CON202 JK202 MIXING MICROPHONE MIC 8 7 6 T104 SW1 OSCILLATION C118 0.1 1 5 C126 0.015(ML) SW2 R112 47 C119 0.02 FM(MONO)/ BEAT TAPE (STAND-BY) R115 10K CT102 10P C114 0.0047(ML) GND 3 MW S101-A R111 47 LINE S301-F GND IC102 LA1805 AM IF GND TP3 R113 C127 10K 1/50 R124 33K C136 0.0047 (ML) T107 MW IF ALC VC3 TC3 C113 1500P 4 2 1 3 CF101 10.7MHz 2 FM IF FM T103 MW OSCILLATION CT101 10P L-CH JK201 LINE INPUT R-CH BUILT-IN MICROPHONE R110 100 C112 5P(CH) SW2 S101 BAND SELECTOR JACK PWB-A2 E MW SW1 C D T102 SW2 ANTENNA C111 33P(CH) 3 STB 1 C121 0.02 AM MIX OUT1 S101-D VR101 100K(B) FINE TUNING C137 0.02 S101-E C123 0.02 FM FM IF SW2 C206 0.022(ML) R108 22K VC1 SW1 CT103 10P fL SW2 fH TRACKING IC102 FM IF DET./ MW/SW MIXER LA1805 24 23 22 21 20 19 18 17 16 15 14 13 MW T101 SW1 ANTENNA CT104 10P R107 100K C117 0.02 T106 FM DET. fL SW2 BAND fH COVERAGE S301 FUNCTION/ BEAT CANCEL C110 0.02 TP4 R213 470K C116 0.02 SW1 SW2 R104 820K C141 5P(CH) R105 100 S101 BAND SELECTOR FM MW R216 47K R106 100K R103 220K C139 0.02 L109 MW BAR ANTENNA FM C138 220/16 R206 220K S101-F C109 5P(CH) R118 100K R101 47 C103 10/16 R122 10 C108 20P (CH) C208 4.7/50 B C115 5P(CH) S101 BAND SELECTOR VC4 VD101 1S2638 C102 0.001 C143 8P(CH) D104 1N4148 TP1 TC2 L102 FM RF SW1 SW2 T108 FM IF D103 1N4148 MW C107 R102 15P 33 (CH) C140 0.1 C106 18P(CH) 2 9 8 TP2 AM OSC 3 VC2 S101-C 1 2 C104 0.001 S101 BAND SELECTOR FM A 1 T103 fL MW BAND L103 fL FM BAND CT102 fL SW1 BAND T105 TC1 fH COVERAGE TC4 fH COVERAGE T104 fH COVERAGE CT101 L102 fL FM L100 fL MW T101 fL SW1 T102 TC2 fH TRACKING TC3 fH TRACKING CT104 fH TRACKING CT103 L103 FM OSC. BP101 BAND PASS C101 FILTER 10.7MHz 0.001 IC101 FM FRONT END LA1186N 4 6 7 3 5 TC4 ROD ANTENNA MAIN PWB-A1 6 1 QT-90W IC301 SURROUND EFFECT CONTROL BA4558 R307 2.2K R309 12K C310 100/16 IC301 R311 12K 6 (2/2) 7 5 8 SURROUND CONTROL Q501 2SC945 C502 10/16 R312 2.2K R-CH R506 470 R507 10K D501 1N4148 C311 220/16 1 2 3 4 5 5 CN501 1 2 3 4 5 CON501 C316 0.047(ML) C312 0.001(ML) R OUT L IN C339 1/50 R341 680K Q305 2SC945 VOLUME CONTROL C401 4.7/50 L IN R401 1K C334 0.0068 C404 R406 33 47/16 R IN R339 2.7K R420 2.2K C416 10/16 +B CON602 C605 220/25 1 Q604 3DA8050 7 R613 560 FM(ST) TAPE(STAND-BY) 8 +B +B C429 47/25 C411 1000/16 3 2 2 1 1 3 1 R407 150 R408 150 IC402 7 HEADPHONES PWB-A3 9 11 8 C412 1000/16 10 C428 47/25 12 C402 4.7/50 F601 T2.5A L 250V C601 0.02 +15V DC S501 VOLTAGE SELECTOR S301-A S301 FUNCTION/ BEAT CANCEL AC 220-240 V AC 110-127 V T501 POWER TRANSFORMER +B AC POWER SUPPLY CORD AC 110-127 V/ 220-240 V, 50/60 Hz 0V +B +B 9 3 4 +B R603 22K R610 1K LINE FM(MONO)/BEAT CN402 +B C602 0.02 +12V C606 100/16 2 ZD602 TZX13V-B 3 R611 1K MOTOR CONTROL 1 C427 0.1 +B Q602 SS8550 R612 2.2 Fusible 1 CN402A 2 2 C424 100/25 R423 1K C616 3300/25 Q603 SS8550 +B REGULATOR 1 2 C406 0.1 C426 0.1 5 C423 R424 33 47/25 R427 33K VR303B 100K(B) SP504 SURROUND R-CH C408 47/25 3 R340 2.7K +B 4 R428 33K R421 47K C328 0.01 R324 39K C336 0.0015 6 R425 150 VR302,VR303 GRAPHIC EQUALIZER 1 C410 1000/16 12 C422 47/25 2 1 11 8 10 R404 C421 1K 4.7/50 2 IC401 IC402 BA5415A POWER AMP. C335 0.0015 R354 R338 R332 R334 R328 18K 8.2K 12K 8.2K 22K C332 C330 560P 0.0027 VR301B VR302B 100K(B) 100K(B) VR301 R336 R330 8.2K X-BASS 12K C409 1000/16 9 R402 1K VR303A 100K(B) R337 8.2K 3 2 SO501 AC INPUT SOCKET AC 110-127 V/ 220-240 V, 50/60 Hz C333 0.0068 R333 8.2K SP503 R-CH C407 47/25 C603 0.02 R325 68K R331 12K R326 68K R327 22K R355 18K 1 C604 0.02 C329 0.0027 6 5 GRAPHIC EQUALIZER PWB-B R335 8.2K VR302A 100K(B) C331 560P SPEAKERS 16 OHMS +B D603 1N5401 R329 12K R422 2.2K C340 1/50 SP502 L-CH C405 0.1 D604 1N5401 7 CN301 7 5 VR304 50K(B) VOLUME 10 Figure 11 SCHEMATIC DIAGRAM (2/2) – 11 – 2 2 1 1 CN601 CON301 5 SP501 SURROUND L-CH VR304-B C617 0.1 C327 0.01 VR301 X-BASS VR301A 100K(B) 7 7 R413 33K 5 6 R344 2.7K 1 6 D601 1N5401 5 6 R342 680K R353 1.2K Q401 2SC945 2 3 4 2 3 4 R323 39K 1 1 1 Q306 2SC945 R352 1.2K C346 0.022(ML) 1 D602 1N5401 C345 0.022(ML) R IN 3 VR304-A 2 R405 150 4 C417 C403 100/25 47/16 7 Q402 2SC945 C348 330P L IN 3 IC401 BA5415A POWER AMP. R343 2.7K C347 330P 6 R403 33K C342 47/16 7 2 VOLUME PWB-A4 CON601 R OUT 4 CN401 R349 560 4 R316 120 C317 4.7/50 CN402B L OUT R IN CON401 L OUT CON402 R358 5.6K CN304 CON304 R359 5.6K C315 0.001(ML) Q301 2SC945 R305 470K R317 2.2K C313 0.15(ML) LD508 CSL-326G3GTH ON LD507 CSL-326G3GTH 1 C314 0.15(ML) 1 2 SW501 SURROUND OFF OFF ON C309 47/16 R416 330 R502 120 R503 120 R351 10K 3 JK401 HEADPHONES C308 4.7/50 4 5 R501 10K LD505 523HD C306 0.0033 (ML) 6 7 SW501-B 8 -8dB LD504 523HD -3dB LD503 523HD 0dB LD502 523HD +3dB LD501 523HD 9 SW501-A R304 10K R302 100K C304 0.01(ML) IC501 LEVEL METER. & SURROUND INDICATER LB1403N SURROUND PWB-A5 R350 10K C307 4.7/50 C302 1/50 R318 47K S301-D TAPE (STAND-BY) R308 12K C305 0.0033 (ML) R-CH FM(ST) R313 2.2K R310 R306 2.2K LINE FM(MONO)/BEAT L-CH 1 IC301 12K R303 10K C303 0.01(ML) 2 R319 47K S301 FUNCTION/ BEAT CANCEL 4 (1/2) 3 C301 1/50 S301 TAPE FUNCTION/ (STAND-BY) BEAT CANCEL -13dB FM(ST) MW/SW1/SW2 SIGNAL FM SIGNAL RECORD SIGNAL PLAYBACK SIGNAL R505 10K C501 10/16 L-CH R504 1K S301-C R301 100K LINE FM(MONO)/BEAT 11 BATTERIES DC 15 V [ "D" SIZE (UM/SUM-1, R20 or HP-2)BATTERY x 8 ] BATTERY PWB-A6 BATTERIES DC 15 V [ "D" SIZE (UM/SUM-1, R20 or HP-2)BATTERY x 2 ] 12 QT-90W T103 CT102 C120 C119 R334 C332 C336 R340 CT104 C108 C604 R321 R320 R353 Q305 ECB R343 C342 C307 C305 VOLUME PWB-A4 R342 CN304 1 2 3 4 5 6 7 R350 R351 C308 R416 C309 R108 TC4 C343 Q303 R313 C311 R305 R316 5 4 3 2 1 CON501 1 VR304 VOLUME VR304-A 7 VR304-B R245 CON202 1 2 3 F TAPE STAND-BY CON402 2 1 C318 C319 CON401 3 2 1 C616 D604 BCE R344 R302 C409 C617 C602 D602 F601 C R317 R244 R243 R242 C421 VD101 TC3 VC4 B E S301 FUNCTION/ BEAT CANCEL R610 C316 VC3 VC2 R312 D Q301 C340 C348 C306 C304 C116 C317 C346 Q306 VC1 TC2 L103 C107 C109 C102 R122 C106 TC1 C140 R359 R404 ECB R307 7 6 5 4 3 2 1 VR101 FINE TUNING R304 8 7 6 5 R311 A C423 C424 IC301 R308 R306 R309 R401 C429 1 R425 2 3 4 C402 C422 5 R427 6 R423 7 8 R424 9 10 11 C427 12 C428 3 C339 C302 C410 H C347 C310 1 2 3 4 R106 CON301 1 2 3 4 5 6 7 C345 R310 S301 R413 GY 2 C301 Q402 R406 C408 R402 BK 1 C104 IC101 C213 R206 R202 C260 IC402 GND PLAY BACK C412 WH G RD BK RECORD/PLAYBACK HEAD(241-3) C303 R301 C407 B C E C426 ERASE HEAD (241-4) R349 REC. C411 1 2 3 4 R352 R319 CON304 R358 7 6 5 4 3 2 1 R428 R420 Q401 R405 B CE R341 A C404 C403 CN201 Q602 1 2 3 4 5 6 7 8 9 10 11 12 R314 C314 C401 BK WH BK RD IC401 TAPE GY R208 R205 C207 R612 3 2 1 BP101 Q304 C344 R315 BCE R318 R254 C417 1 2 3 4 CON602 CN301 C115 A FM(ST) B FM(MONO) S301 FUNCTION/ BEAT CANCEL LINE BEAT ON CANCEL C320 D302 R362 R363 D303 D301 CON601 2 1 C601 R361 D601 D603 C603 F601 T2.5A L 250V 4 Figure 12 WIRING OF P.W.BOARD (1/2) – 12 – 5 1 MIN C117 R107 R109 R210 C206 7 R328 C101 R216 R214 R218 C612 C416 R422 3 4 C209 R247 C313 Q603 C614 Q601 R421 2 R217 C208 C312 1 2 34 CON201 C618 C405 BL B C D R403 OR BL E F C406 OR 12 10 8 6 4 2 11 9 7 5 3 1 E CB 1 C606 G ZD601 R601 CN602 BK RD R613 C605 BK RD ZD602 H C203 C205 BCE E BC I IC201 R611 E BC Q604 S201 RECORD/ PLAYBACK D201 R603 T201 E C214 R252 R228 M601 TAPE MOTOR (241-5) L102 C261 C258 R246 R209 C259 C204 R213 R204 R201 C202 C201 R251 C212 R211 R212 C211 R253 R203 CBE Q201 C231 C257 C613 C220 C221 SW601 TAPE MAIN (241-6) Q209 ECB R227 R207 C210 TP5 R215 C217 ROD ANTENNA(228) D C315 C225 R256 R255 9 8 7 6 5 4 3 2 1 R332 C139 R102 R303 R222 R233 R257 R258 C103 D103 C330 R338 C334 R323 R331 R335 R329 C331 R337 T108 TP2 R327 R333 R325 T102 T101 CT103 R248 R249 R354 C328 R326 R324 R336 R221 (239) R330 R339 C327 TP1 C329 R355 R103 C335 C143 D104 C122 C110 GRAPHIC X-BASS EQUALIZER VR303 VR302 VR301 1KHz MAX 10KHz C333 S101 BAND SELECTOR F MW S101 BAND SW1 SELECTOR TP6 SW2 C224 C F C C141 R115 3 2 1 R123 R114 Q207 BC E R116 R226 R235 Q205 B C E R113 C125 E 3 2 1 T107 C128 C237 (233) C127 B 1 CF101 C123 C124 CF102 C223 C126 R118 R104 C129 C215 IC102 5 12 10 R117 24 FM R101 TP4 1 234 5 20 GRAPHIC EQUALIZER PWB-B D C130 C138 13 15 CON203 A CT101 TP3 C132 C133 R119 C134 L109 MW BAR ANTENNA S101 ECB C131 C135 C111 R105 VR102 R121 R120 R111 T106 VCO C114 R110 C112 C137 C118 R124 C142 C121 C136 R112 C113 A B MAIN PWB-A1 T105 T104 6 QT-90W JACK PWB-A2 BUILT-IN MICROPHONE MIC BK WH CN201A CON201A 1 1 2 2 C233 JK202 BK R240 5 CN203 CN202 3 WH 2 PK WH 1 10KHz 1KHz JK201 LINE INPUT 3 SP501 SURROUND L-CH R-CH 1 MAX RD L-CH C227 GRAPHIC X-BASS EQUALIZER VR303 VR302 VR301 SP502 L-CH JK202 MIXING MICROPHONE 1 1 2 3 4 5 R234 BK WH SPEAKERS L-CH BK BK RD A A A CN402B 2 RD 1 RD B B SP503 R-CH B CN402A BK 2 1 BK MIN BK RD GRAPHIC EQUALIZER PWB-B SP504 SPEAKERS SURROUND R-CH R-CH AC POWER SUPPLY CORD AC 110-127 V/ AC 220-240 V, 50/60 Hz BK BK RD RD SO501 AC INPUT SOCKET AC 110-127 V/ AC 220-240 V, 50/60 Hz SURROUND PWB-A5 WH BL BK R507 RD RD LD502 LD503 D501 LD504 RD R502 R504 R505 1 IC501 BROWN RD(R) RED OR ORANGE YL YELLOW GR GREEN BL BLUE VL VIOLET GY GRAY WH(W) WHITE BK BLACK PK PINK RD BL LD505 RD WH R501 SW501 X-BASS C501 5 AB ON LD507 R503 OFF R506 CN501 1 2 3 4 5 C502 LD501 1 2 3 4 5 6 7 8 9 BR BK RD Q501 B C E COLOR TABLE S501 VOLTAGE SELECTOR AC 220 V-240 V AC 110 V-127 V T501 POWER TRANSFORMER LD508 (231) BATTERIES DC 15 V [ "D" size (UM/SUM-1,R20 or HP2) battery x 8 ] HEADPHONES PWB-A3 3 R408 CN401 3 2 1 JK401 RD JK401 HEADPHONES R407 CN402 2 1 1 CN601 2 1 BATTERY PWB-A6 RD BK BATTERIES DC 15 V [ "D" size (UM/SUM-1,R20 or HP2) battery x 2 ] (244) (245) 7 (230) 8 9 10 Figure 13 WIRING OF P.W.BOARD (2/2) – 13 – 11 12 QT-90W BLOCK DIAGRAM OF IC IC102: LA1805 Vcc FM AM 5 3 22 MIX RF AMP 1 2 20 17 FM IF DCT POST AMP. 16 11 13 15 7 14 PILOT DET 21 STEREO INDIC. DRIVE TNG. Vcc LEVEL DET FF MUTING AM IF 23 RNG. PHASE DET DET OSC TUNING INDIC. DRIVE AGC VCO FF FF STEREO SW DECODER GND 4 6 24 8 19 12 9 18 10 IC201: BA3313L IC101: LA1186N OUT 1 1 2 ALC 150K BUTTER VRE1 NF 1 3 4 N.C. OSC REG MIX RF IN 1 5 6 ALC GND (SUB) GND 7 1 2 3 5 4 6 8 7 9 8 VCC IN 2 9 IC501: LB1403N 10 FILTER NF 2 11 12 OUT 2 150K amp 1 Vc1 2 Vc2 3 Vc3 6 4 5 Vc4 GND Vc5 8 7 Amp. Out In 9 Vcc IC401/IC402: BA5415A µ - COM IC301: BA4558 INPUT1 NF1 BS1 OUTPUT1 Vcc Pre a. Gnd 7 12 11 9 Power a. Gnd 10 8 Fin 52 20K INPUT AMP 2 3 270 47µ 2 4 1000µ 47µ OUTPUT AMP 1 7 100µ 47µ OUTPUT AMP 2 33 1K 62 1000µ 0.1µ 44K 44K RL Small ripple filter 0.1µ 5 33K INPUT AMP 1 VCC about 90µA ST. RY (at 5V) 6 1 1000µ 9 11 8 47µ 10 20K Fin 2 5 4 Power a. Gnd 3 1 6 DC 1 INPUT2 NF2 BS2 OUTPUT2 DC2 – 14 – 12 GND QT-90W PARTS GUIDE STEREO RADIO CASSETTE RECORDER MODEL QT-90W “HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the following information. 1. MODEL NUMBER 2. REF. No. 3. PART NO. 4. DESCRIPTION For U.S.A. only Contact your nearest SHARP Parts Distributor to order. For location of SHARP Parts Distributor, Please call Toll-Free; 1-800-BE-SHARP MARK: SPARE PARTS-DELIVERY SECTION Explanation of capacitors/resistors parts codes Capacitors Resistors VCC ....................... Ceramic type VCK ........................ Ceramic type VCT ........................ Semiconductor type VC • • MF ............... Cylindrical type (without lead wire) VC • • MN ............... Cylindrical type (without lead wire) VC • • TV ................ Square type (without lead wire) VC • • TQ ............... Square type (without lead wire) VC • • CY ............... Square type (without lead wire) VC • • CZ ............... Square type (without lead wire) VC • • • • • • • • • J .. The 13th character represents capacity difference. ("J" ±5%, "K" ±10%, "M" ±20%, "N" ±30%, "C" ±0.25 pF, "D" ±0.5 pF, "Z" +80-20%.) VRD ....................... Carbon-film type VRS ........................ Carbon-film type VRN ....................... Metal-film type VR • • MF ............... Cylindrical type (without lead wire) VR • • MN ............... Cylindrical type (without lead wire) VR • • TV ................ Square type (without lead wire) VR • • TQ ............... Square type (without lead wire) VR • • CY ............... Square type (without lead wire) VR • • CZ ............... Square type (without lead wire) VR • • • • • • • • • J .. The 13th character represents error. ("J" ±5%, "F" ±1%, "D" ±0.5%.) If there are no indications for the electrolytic capacitors, error is ±20%. If there are no indications for other parts, the resistors are ±5% carbon-film type. NOTE: Parts marked with “ ” are important for maintaining the safety of the set. Be sure to replace parts with specified ones for maintaining the safety and performance of the set. QT-90W NO. PRICE RANK PARTS CODE DESCRIPTION INTEGRATED CIRCUITS VHILA1186N/-1 VHILA1805//-1 J J IC201 92L2301-461001 J IC301 IC401,402 IC501 92L2301-145001 92L2301-455001 VHILB1403N/-1 J J J AE FM Front End,LA1186N AM FM IF Det./MW/SW Mixer, LA1805 Playback/Record Pre Amp.& Control,BA3313L Surround Effect Control,BA4558 Power Amp.,BA5415A AG Level Meter & Surround Indicater,LB1403N TRANSISTORS 92L2103-109001 92L2103-032001 92L2103-025001 92L2103-032001 92L2103-032001 92L2103-032001 92L2103-032001 92L2103-032001 92L2103-109001 92L2103-025001 92L2103-109001 J J J J J J J J J J J Silicon,NPN,3DA8050 Silicon,NPN,2SC945 Silicon,PNP,SS8550 Silicon,NPN,2SC945 Silicon,NPN,2SC945 Silicon,NPN,2SC945 Silicon,NPN,2SC945 Silicon,NPN,2SC945 Silicon,NPN,3DA8050 Silicon,PNP,SS8550 Silicon,NPN,3DA8050 VHD1N4148//-1 VHD1N4148//-1 VHD1N4148//-1 92L2501-010001 92L2501-011001 92L2509-069001 92L2509-007001 92L2507-001001 92L2504-003019 92L2504-003003 J J J J J J J J J J AA Silicon,1N4148 AA Silicon,1N4148 AA Silicon,1N4148 Silicon,1N4148 Silicon,1N5401 LED,Red,523HD LED,Green,CSL-326G3GTH Silicon,1S2638 Zener,8.2V,TZX8V2C Zener,13V,TZX13V-B DIODES D103,104 D201 D301~303 D501 D601~604 LD501~505 LD507,508 VD101 ZD601 ZD602 FILTERS BP101 CF101 CF102 92L4401-008001 RFILF0072AFZZ 92L4403-011001 J J J Band Pass Filter,10.7 MHz AG FM IF,10.7 MHz AM IF TRANSFORMER 1 T501 92L5102-111001 J Power 92L1107-009001 92L1107-007001 92L7602-001001 92L1111-025001 92L1104-092001 92L1104-091001 92L1104-090001 92L1104-089001 92L1104-024001 92L1104-094001 92L1104-038001 92L1104-093001 J J J J J J J J J J J J FM RF FM Oscillation MW Bar Antenna SW1 Antenna SW2 Antenna MW Oscillation SW1 Oscillation SW2 Oscillation FM Detection MW IF FM IF,10.70 MHz Bias Oscillation 100 kohm (B),Semi-VR [Fine Tuning] 10 kohm (B),Semi-VR [VCO] 100 kohm (B)×2 [X-BASS] 100 kohm (B)×2 [Graphic Equalizer] 50 kohms (B)×2 [Volume] COILS L102 L103 L109 T101 T102 T103 T104 T105 T106 T107 T108 T201 VARIABLE RESISTORS VR101 92L1701-052001 J VR102 VR301 VR302,303 92L1601-001001 92L1702-007001 92L1702-006001 J J J VR304 92L1701-049001 J VARIABLE CAPACITORS CT101~104 VC1~4 92L1341-007001 92L1340-003001 PRICE RANK PARTS CODE DESCRIPTION CAPACITORS IC101 IC102 Q201 Q205 Q207 Q209 Q301 Q303~306 Q401,402 Q501 Q601 Q602,603 Q604 NO. J J Trimmer,10 pF Variable Capacitor with Trimmer (TC1~4) C101 C102 C103 C104 C106 C107 C108 C109 C110 C111 C112 C113 C114 C115 C116,117 C118 C119 C120 C121 C122 C123 C124 C125,126 C127~129 C130 C131 C132,133 C134 C135 C136 C137 C138 C139 C140 C141 C142 C143 C201,202 C203,204 C205,206 C207,208 C209,210 C211,212 C213 C214 C215 C217 C220 C221 C223,224 C225 C227 C231 C233 C237 C257 C258 C259,260 C261 C301,302 C303,304 C305,306 C307,308 C309 C310 C311 C312 C313,314 C315 C316 C317 C318~320 C327,328 C329,330 C331,332 C333,334 C335,336 C339,340 C342 C343,344 –1– VCKYPA1HB102K VCCSPA1HL102J VCEAZA1CW106M VCCSPA1HL102J VCCCPA1HH180J VCCCPA1HH150J VCCCPA1HH200J VCCCPA1HH5R0C VCKYPA1HF203Z VCCCPA1HH330J VCCCPA1HH5R0C VCTYPA1HB152K VCQYKA1HM472K VCCCPA1HH5R0C VCKYPA1HF203Z VCKYPA1HF104Z 92L1321-002005 VCEAZA1CW106M 92L1321-002005 VCKYPA1HF104Z VCKYPA1HF203Z VCEAZA1CW226M VCQYKA1HM153K VCEAZA1HW105M VCKYPA1HF203Z VCTYPA1HB152K VCEAZA1HW335M VCCSPA1HL471K VCQYKA1HM822K VCQYKA1HM472K 92L1321-002005 VCEAZA1CW227M VCKYPA1HF203Z VCKYPA1HF104Z 92L1321-001083 VCEAZA1CW107M 92L1321-001003 VCQYKA1HM152J VCEAZA1CW106M VCQYKA1HM223K VCEAZA1HW475M VCQYKA1HM822K VCQYKA1HM222K VCEAZA1CW476M VCEAZA1CW227M VCTYPA1HB103K VCCCPA1HH470J VCQYKA1HM682K VCQYKA1HM223K VCEAZA1HW105M VCEAZA1CW476M VCEAZA1CW106M VCQYKA1HM183K VCEAZA1HW474M VCEAZA1CW476M VCEAZA1CW106M VCCCPA1HH330J VCKYPA1HB681K VCCCPA1HH330J VCEAZA1HW105M VCQYKA1HM103K VCQYKA1HM332K VCEAZA1HW475M VCEAZA1CW476M VCEAZA1CW107M VCEAZA1CW227M VCQYKA1HM102K VCQYKA1HM154K VCQYKA1HM102K VCQYKA1HM473K VCEAZA1HW475M VCEAZA1CW476M 92L1323-015003 92L1323-015011 92L1323-014017 92L1323-015008 92L1323-015014 VCEAZA1HW105M VCEAZA1CW476M VCEAZA1HW105M J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J AA AA AC AA AA AA AA AA AA AA AB AA AC AC AB AB AB AA AA AB AC AC AB AC AB AB AA AA AB AC AA AA AB AB AB AC AB AB AB AC AA AA AA AB AA AA AB AB AC AC AA AB AA AB AB AB AB AB AB 0.001 µF,50V 0.001 µF,50V 10 µF,16V,Electrolytic 0.001 µF,50V 18 pF (CH),50V 15 pF (CH),50V 20 pF (CH),50V 5 pF (CH),50V 0.02 µF,50V 33 pF (CH),50V 5 pF (CH),50V 1500 pF,50V 0.0047 µF,50V,Mylar 5 pF (CH),50V 0.02 µF,50V 0.1 µF,50V 0.02 µF,50V 10 µF,16V,Electrolytic 0.02 µF,50V 0.1 µF,50V 0.02 µF,50V 22 µF,16V,Electrolytic 0.015 µF,50V,Mylar 1 µF,50V,Electrolytic 0.02 µF,50V 1500 pF,50V 3.3 µF,50V,Electrolytic 470 pF,50V 0.0082 µF,50V,Mylar 0.0047 µF,50V,Mylar 0.02 µF,50V 220 µF,16V,Electrolytic 0.02 µF,50V 0.1 µF,50V 5 pF (CH),50V 100 µF,16V,Electrolytic 8 pF (CH),50V 0.0015 µF,50V,Mylar 10 µF,16V,Electrolytic 0.022 µF,50V,Mylar 4.7 µF,50V,Electrolytic 0.0082 µF,50V,Mylar 0.0022 µF,50V,Mylar 47 µF,16V,Electrolytic 220 µF,16V,Electrolytic 0.01 µF,50V 47 pF (CH),50V 0.0068 µF,50V,Mylar 0.022 µF,50V,Mylar 1 µF,50V,Electrolytic 47 µF,16V,Electrolytic 10 µF,16V,Electrolytic 0.018 µF,50V,Mylar 0.47 µF,50V,Electrolytic 47 µF,16V,Electrolytic 10 µF,16V,Electrolytic 33 pF (CH),50V 680 pF,50V 33 pF (CH),50V 1 µF,50V,Electrolytic 0.01 µF,50V,Mylar 0.0033 µF,50V,Mylar 4.7 µF,50V,Electrolytic 47 µF,16V,Electrolytic 100 µF,16V,Electrolytic 220 µF,16V,Electrolytic 0.001 µF,50V,Mylar 0.15 µF,50V,Mylar 0.001 µF,50V,Mylar 0.047 µF,50V,Mylar 4.7 µF,50V,Electrolytic 47 µF,16V,Electrolytic 0.01 µF,50V 0.0027 µF,50V 560 pF,50V 0.0068 µF,50V 0.0015µF,50V 1 µF,50V,Electrolytic 47 µF,16V,Electrolytic 1 µF,50V,Electrolytic QT-90W NO. C345,346 C347,348 C401,402 C403,404 C405,406 C407,408 C409~412 C416 C417 C421 C422,423 C424 C426,427 C428,429 C501,502 C601~604 C605 C606 C612,613 C614 C616 C617,618 PRICE RANK PARTS CODE VCQYKA1HM223K VCTYPA1HB331K VCEAZA1HW475M VCEAZA1CW476M VCKYPA1HF104Z VCEAZA1EW476M 92L1301A002004 VCEAZA1CW106M VCEAZA1EW107M VCEAZA1HW475M VCEAZA1EW476M VCEAZA1EW107M VCKYPA1HF104Z VCEAZA1EW476M VCEAZA1CW106M 92L1321-002005 VCEAZA1EW227M VCEAZA1CW107M VCEAZA1CW107M VCKYPA1HF104Z 92L1301A002006 VCKYPA1HF104Z DESCRIPTION J J J J J J J J J J J J J J J J J J J J J J AB 0.022 µF,50V,Mylar 330 pF,50V AB 4.7 µF,50V,Electrolytic AB 47 µF,16V,Electrolytic 0.1 µF,50V AB 47 µF,25V,Electrolytic 1000 µF,16V,Electrolytic AC 10 µF,16V,Electrolytic AB 100 µF,25V,Electrolytic AB 4.7 µF,50V,Electrolytic AB 47 µF,25V,Electrolytic AB 100 µF,25V,Electrolytic 0.1 µF,50V AB 47 µF,25V,Electrolytic AC 10 µF,16V,Electrolytic 0.02 µF,50V AC 220 µF,25V,Electrolytic AC 100 µF,16V,Electrolytic AC 100 µF,16V,Electrolytic 0.1 µF,50V 3300 µF,25V,Electrolytic 0.1 µF,50V J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA NO. R314,315 R316 R317 R318,319 R320,321 R323,324 R325,326 R327,328 R329~332 R333~338 R339,340 R341,342 R343,344 R349 R350,351 R352,353 R354,355 R358,359 R361~363 R401,402 R403 R404 R405 R406 R407,408 R413 R416 R420 R421 R422 R423 R424 R425 R427,428 R501 R502,503 R504 R505 R506 R507 R601 R603 R610,611 1 R612 R613 RESISTORS R101 R102 R103 R104 R105 R106,107 R108,109 R110 R111,112 R113 R114 R115 R116 R117 R118 R119 R120 R121 R122 R123 R124 R201,202 R203,204 R205,206 R207,208 R209,210 R211,212 R213 R214 R215,216 R217,218 R221 R222 R226 R227 R228 R233 R234 R235 R240 R242 R243 R244 R245 R246,247 R248 R249 R251,252 R253,254 R255,256 R257,258 R301,302 R303,304 R305 R306,307 R308~311 R312,313 VRD-ST2CD470J VRD-ST2CD330J VRD-ST2CD224J VRD-ST2CD824J VRD-ST2CD101J VRD-ST2CD104J VRD-ST2CD223J VRD-ST2CD101J VRD-ST2CD470J VRD-ST2CD103J VRD-ST2CD222J VRD-ST2CD103J VRD-ST2CD222J VRD-ST2CD100J VRD-ST2CD104J VRD-ST2CD153J VRD-ST2CD272J VRD-ST2CD392J VRD-ST2CD100J VRD-ST2CD101J VRD-ST2CD333J VRD-ST2CD392J VRD-ST2CD390J VRD-ST2CD224J VRD-ST2CD682J VRD-ST2CD152J VRD-ST2CD183J VRD-ST2CD474J VRD-ST2CD331J VRD-ST2CD473J VRD-ST2CD154J VRD-ST2CD331J VRD-ST2CD223J VRD-ST2CD472J VRD-ST2CD223J VRD-ST2CD100J VRD-ST2CD223J VRD-ST2CD472J VRD-ST2CD684J VRD-ST2CD102J VRD-ST2CD273J VRD-ST2CD222J VRD-ST2CD273J VRD-ST2CD222J VRD-ST2CD223J VRD-ST2CD103J VRD-ST2CD121J VRD-ST2CD183J VRD-ST2CD124J VRD-ST2CD103J VRD-ST2CD473J VRD-ST2CD104J VRD-ST2CD103J VRD-ST2CD474J VRD-ST2CD222J VRD-ST2CD123J VRD-ST2CD222J 47 ohms,1/6W 33 ohms,1/6W 220 kohms,1/6W 820 kohms,1/6W 100 ohm,1/6W 100 kohm,1/6W 22 kohms,1/6W 100 ohm,1/6W 47 ohms,1/6W 10 kohm,1/6W 2.2 kohms,1/6W 10 kohm,1/6W 2.2 kohms,1/6W 10 ohm,1/6W 100 kohm,1/6W 15 kohms,1/6W 2.7 kohms,1/6W 3.9 kohms,1/6W 10 ohm,1/6W 100 ohm,1/6W 33 kohms,1/6W 3.9 kohms,1/6W 39 ohms,1/6W 220 kohms,1/6W 6.8 kohms,1/6W 1.5 kohms,1/6W 18 kohms,1/6W 470 kohms,1/6W 330 ohms,1/6W 47 kohms,1/6W 150 kohms,1/6W 330 ohms,1/6W 22 kohms,1/6W 4.7 kohms,1/6W 22 kohms,1/6W 10 ohm,1/6W 22 kohms,1/6W 4.7 kohms,1/6W 680 kohms,1/6W 1 kohm,1/6W 27 kohms,1/6W 2.2 kohms,1/6W 27 kohms,1/6W 2.2 kohms,1/6W 22 kohms,1/6W 10 kohm,1/6W 120 ohms,1/6W 18 kohms,1/6W 120 kohms,1/6W 10 kohm,1/6W 47 kohms,1/6W 100 kohm,1/6W 10 kohm,1/6W 470 kohms,1/6W 2.2 kohms,1/6W 12 kohms,1/6W 2.2 kohms,1/6W PRICE RANK PARTS CODE VRD-ST2CD103J VRD-ST2CD121J VRD-ST2CD222J VRD-ST2CD473J VRD-ST2CD682J VRD-ST2CD393J VRD-ST2CD683J VRD-ST2CD223J VRD-ST2CD123J VRD-ST2CD822J VRD-ST2CD272J VRD-ST2CD684J VRD-ST2CD272J VRD-ST2CD561J VRD-ST2CD103J VRD-ST2CD122J VRD-ST2CD183J VRD-ST2CD562J VRD-ST2CD103J VRD-ST2CD102J VRD-ST2CD333J VRD-ST2CD102J VRD-ST2CD151J VRD-ST2CD330J VRD-ST2EE151J VRD-ST2CD333J VRD-ST2CD331J VRD-ST2CD222J VRD-ST2CD473J VRD-ST2CD222J VRD-ST2CD102J VRD-ST2CD330J VRD-ST2CD151J VRD-ST2CD333J VRD-ST2CD103J VRD-ST2CD121J VRD-ST2CD102J VRD-ST2CD103J VRD-ST2CD471J VRD-ST2CD103J VRD-ST2CD561J VRD-ST2CD223J VRD-ST2CD102J 92L1509-006008 VRD-ST2CD561J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J DESCRIPTION AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA 10 kohm,1/6W 120 ohms,1/6W 2.2 kohms,1/6W 47 kohms,1/6W 6.8 kohms,1/6W 39 kohms,1/6W 68 kohms,1/6W 22 kohms,1/6W 12 kohms,1/6W 8.2 kohms,1/6W 2.7 kohms,1/6W 680 kohms,1/6W 2.7 kohms,1/6W 560 ohms,1/6W 10 kohm,1/6W 1.2 kohms,1/6W 18 kohms,1/6W 5.6 kohms,1/6W 10 kohm,1/6W 1 kohm,1/6W 33 kohms,1/6W 1 kohm,1/6W 150 ohms,1/6W 33 ohms,1/6W 150 ohms,1/4W 33 kohms,1/6W 330 ohms,1/6W 2.2 kohms,1/6W 47 kohms,1/6W 2.2 kohms,1/6W 1 kohm,1/6W 33 ohms,1/6W 150 ohms,1/6W 33 kohms,1/6W 10 kohm,1/6W 120 ohms,1/6W 1 kohm,1/6W 10 kohm,1/6W 470 ohms,1/6W 10 kohm,1/6W 560 ohms,1/6W 22 kohms,1/6W 1 kohm,1/6W 2.2 ohms,1/4W,Fusible AA 560 ohms,1/6W OTHER CIRCUITRY PARTS CN201 CN201A CN202 CN203 CN301 CN304 CN401 CN402 CN402A CN402B CN501 CN601 CN602 CON201 CON201A CON202 CON203 CON301 CON304 CON401 CON402 CON501 CON601 CON602 1 F601 JK201 JK202 JK401 M601(241-5) MIC S101 S201 –2– 92L3421-773001 92L3421-775001 92L3421-813001 92L3421-822001 92L3421-788001 92L3421-780001 92L3421-803001 92L3421-581001 92L3421-580001 92L3421-580001 92L3421-801001 92L3421-782001 92L3421-774001 92L3101-171009 92L3101-054001 92L3101-171010 92L3101-171008 92L3101-173006 92L3101-171006 92L3101-094002 92L3101-174001 92L3101-171008 92L3101-094001 92L3101-094003 92L5301-022001 92L3201-073001 92L3202-024001 92L3202-024001 92L02103007B-0 92L7201-002001 92L4103-022001 J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J 92L4104-013001 J Connector Ass’y,4Pin Connector Ass’y,2Pin Connector Ass’y,3Pin Connector Ass’y,5Pin Connector Ass’y,7Pin Connector Ass’y,7Pin Connector Ass’y,3Pin Plug,2Pin Connector Ass’y,2Pin Connector Ass’y,2Pin Connector Ass’y,5Pin Connector Ass’y,2Pin Connector Ass’y,4Pin Plug,4Pin Plug,2Pin Plug,3Pin Plug,5Pin Plug,7Pin Plug,7Pin Plug,3Pin Plug,2Pin Plug,5Pin Plug,2Pin Plug,4Pin Fuse,T2.5A L 250V Jack,Line Input Jack,Mixing Microphones Jack,Headphones Motor with Pulley [Tape] Built-in Microphone Switch,Slide Type [Band Selector] Switch,Push Type [Record/Playback] QT-90W NO. PRICE RANK PARTS CODE S301 92L4103-022001 J 1 S501 92L4106-011001 J 1 SO501 SP501~504 SW501 SW601(241-6) 92L3204-016001 92L4801-085001 92L4104-002001 92L4110-007001 J J J J DESCRIPTION Switch,Slide Type [Function/Beat Cancel] Switch,Slide Type [Voltage Selector] AC Input Socket Speaker Switch,Push Type [Surround] Switch,Leaf Type [Tape Main] CABINET PARTS 201 202 203 203- 1 203- 2 204 204- 1 204- 2 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 1 240 241 241- 1 241- 2 241- 3 241- 4 241- 5(M601) 241- 6(SW601) 243 244 245 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 92L799QT900101 92L202QT900101 92L799QT900301 92L201QT900101 92L286QT800101 92L799QT800601 92L242QT800101 92L579QT800101 92L210QT800101 92L211QT800102 92L220QT800101 J J J J J J J J J J J 92L226QT800101 92L227QT800101 92L248QT800101 92L25133010101 92L260QT800101 92L270QT800101 92L270QT800201 92L272QT800102 92L272QT800202 92L272QT800302 92L272QT800402 92L272QT800502 92L272QT800602 92L273QT800101 92L273QT800201 92L278QT800101 92L278QT800101 92L289QT800102 92L290QT800101 92L430QT900101 92L43330616501 92L471QT800101 92L47423010101 92L47470120101 92L476QT800101 92L489QT800101 92L579QT900103 92L250QT800101 92L70338050101 92L42838560501 92L7603-002001 92L3451-000127 92L45670120101 92L7702-003001 92L02104003A-0 92L02104007A-0 92L155-2AM 92L6PA 92L02103007B-0 92L4110-007001 92L430QT900101 92L474QT900101 92L474QT900201 92L60026450800 92L60030500610 92L60220500410 92L60620400410 92L61030010810 92L61030011010 92L61030011210 92L61030023010 92L61126010800 92L61130011210 92L61226010810 92L61230010810 92L61430011010 92L61530041010 92L61540021410 J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J NO. Front Cabinet Ass’y Rear Cabinet Top Panel Ass’y Top Panel Name Plate,SHARP Dial Drum Ass’y Dial Drum Label,Frequency Range Cover,Battery Cover,Cassette Holder Bracket,Tape Mechanism/ Main PWB Bracket,Tuning Knob Bracket,Cassette Holder Cover Handle Holder,Bar Antenna Lens,Dial Tuning Knob,Tuning Knob,Fine Tuning Button,Record Button,Play Button,Rewind Button,Fast Forward Button,Stop/Eject Button,Pause Knob,Volume Button,Surround Knob,Band Selector Knob,Function Ring,Volume Knob Gear,Dial Heat Sink Rod Antenna Spring,Cassette Holder Spring,Battery,Spring,Battery,+ Spring,Record Bracket,Rod Antenna Label,Specifications Bracket,LED Damper Gear Ass’y Bracket,Tape Mechanism Ferrite Bar Lead Wire with Lug Holder,Fuse Tape Mechanism Ass’y Belt,REW/FF Belt,Main Head,Record/Playback Head,Erase Motor with Pulley [Tape] Switch,Leaf Type [Tape Main] Bracket,Heat Sink Spring,Battery,+ Spring,Battery,Screw,ø2.6×8mm Screw,ø3×6mm Screw,ø2×4mm Screw,ø2×4mm Screw,ø3×8mm Screw,ø3×10mm Screw,ø3×12mm Screw,ø3×30mm Screw,ø2.6×8mm Screw,ø3×12mm Screw,ø2.6×8mm Screw,ø3×8mm Screw,ø3×10mm Screw,ø3×10mm Screw,ø4×14mm 616 617 618 619 620 621 PRICE RANK PARTS CODE 92L61540041410 92L62030011010 92L66090752012 92L62030061070 92L61440041010 92L53008003008 J J J J J J DESCRIPTION Screw,ø4×14mm Screw,ø3×10mm Nut,ø9×ø12×2mm Screw,ø3×10mm Screw,ø4×10mm Washer,ø3×ø8×0.8mm ACCESSORIES/PACKING PARTS 1 1 1 1 1 1 1 QACCA0004AW00 QACCB0012AW00 QACCE0007AW00 QACCL0002AW00 QACCL0008AW00 QPLGA0003AWZZ QPLGA0004AWZZ 92L300QT800102 92L31020300401 92L31074500401 92L510QT900101 92L56318492L579QT800201 92L580QT900104 92L593QT900101 J J J J J J J J J J J J J J J AK AS AH AN AC Power Supply Cord AC Power Supply Cord AC Power Supply Cord AC Power Supply Cord AC Power Supply Cord AF Adaptor,AC Plug AF Adaptor,AC Plug Packing Add.,Left/Right Polyethylene Bag,Accessories Polyethylene Bag,Unit Packing Case Label,Serial No. Label,Feature Operation Manual Schematic Diagram P.W.B. ASSEMBLY (Not Replacement Item) PWB-A1~6 92L770QT900101 J — PWB-B 92L771QT900102 J — –3– Main/Jack/Headphones/Volume/ Surround/Battery (Combined Ass’y) Graphic Equalizer QT-90W 210 206 205 608x3 A 228 209 202 234 SO501 607 207 245 608x3 605x2 607 S501 B 610x2 244 605x2 602 224 PWB-A3 223 237 607 T501 215 216 217 218 219 229 220 C 620 231 233 616x2 614 230 PWB-A2 204 TAPE MECHANISM D 607 236 PWB-A6 204-2 239 241(241-1,241-2, 241-3,241-4, 241-5(M601), 241-6(SW601)) 612 601 615x2 606 226 PWB-A1 203 204-1 621 240x2 232 213 203-1 604 609 606x3 208 619x2 613x4 E PWB-B 611x2 203-2 606 611x3 613x4 214 PWB-A5 Silicon Grease 603 SP501 606x2 238 F 613x4 222 SP502 235 IC402 IC401 211 243x2 227 PWB-A4 606x2 617x2 613x4 MIC BELT CONNECTION SP503 G Main Belt Motor M601 Flywheel 212 SP504 618 225 221 FF/REW Belt 201 REW/FF Clutch H Note: Only the unit and consumale parts are supplied as parts supply for the Tape mechanism. 1 2 3 4 Figure 4 CABINET EXPLODED VIEW –4– 5 6 QT-90W COPYRIGHT © 2001 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. SHARP CORPORATION AV Systems Group Audio Systems Division Higashihiroshima, Hiroshima 739-0192, Japan Printed in Japan A0107-1013DS•HA•C EX