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Sharp QT-80W, Service Manual

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Sharp QT-80W Service Manual Download Page 17

NO.

PRICE

RANK

DESCRIPTION

PARTS CODE

NO.

PARTS CODE

PRICE

RANK

DESCRIPTION

QT-80W

– 2 –

R106,107

VRD-ST2CD104J

J

AA

100 kohm,1/6W

R108,109

VRD-ST2CD223J

J

AA

22 kohms,1/6W

R110

VRD-ST2CD101J

J

AA

100 ohm,1/6W

R111,112

VRD-ST2CD470J

J

AA

47 ohms,1/6W

R113

VRD-ST2CD103J

J

AA

10 kohm,1/6W

R114

VRD-ST2CD223J

J

AA

22 kohms,1/6W

R115

VRD-ST2CD103J

J

AA

10 kohm,1/6W

R116

VRD-ST2CD223J

J

AA

22 kohms,1/6W

R117

VRD-ST2CD100J

J

AA

10 ohm,1/6W

R118

VRD-ST2CD104J

J

AA

100 kohm,1/6W

R119

VRD-ST2CD153J

J

AA

15 kohms,1/6W

R120

VRD-ST2CD272J

J

AA

2.7 kohms,1/6W

R121

VRD-ST2CD392J

J

AA

3.9 kohms,1/6W

R122

VRD-ST2CD100J

J

AA

10 ohm,1/6W

R123

VRD-ST2CD101J

J

AA

100 ohm,1/6W

R124

VRD-ST2CD333J

J

AA

33 kohms,1/6W

R201,202

VRD-ST2CD392J

J

AA

3.9 kohms,1/6W

R203,204

VRD-ST2CD151J

J

AA

150 ohms,1/6W

R207,208

VRD-ST2CD562J

J

AA

5.6 kohms,1/6W

R209,210

VRD-ST2CD102J

J

AA

1 kohm,1/6W

R211,212

VRD-ST2CD183J

J

AA

18 kohms,1/6W

R213

VRD-ST2CD474J

J

AA

470 kohms,1/6W

R214

VRD-ST2CD331J

J

AA

330 ohms,1/6W

R215,216

VRD-ST2CD393J

J

AA

39 kohms,1/6W

R217,218

VRD-ST2CD334J

J

AA

330 kohms,1/6W

R219,220

VRD-ST2CD273J

J

AA

27 kohms,1/6W

R221

VRD-ST2CD221J

J

AA

220 ohms,1/6W

R222,223

VRD-ST2CD223J

J

AA

22 kohms,1/6W

R224

VRD-ST2CD100J

J

AA

10 ohm,1/6W

R225

VRD-ST2CD223J

J

AA

22 kohms,1/6W

R231,232

VRD-ST2CD124J

J

AA

120 kohms,1/6W

R233

VRD-ST2CD182J

J

AA

1.8 kohms,1/6W

R234

VRD-ST2CD472J

J

AA

4.7 kohms,1/6W

R237

VRD-ST2CD472J

J

AA

4.7 kohms,1/6W

R240

VRD-ST2CD102J

J

AA

1 kohm,1/6W

R241

VRD-ST2CD331J

J

AA

330 ohms,1/6W

R242

VRD-ST2CD103J

J

AA

10 kohm,1/6W

R243,244

VRD-ST2CD223J

J

AA

22 kohms,1/6W

R247

VRD-ST2CD221J

J

AA

220 ohms,1/6W

R250,251

VRD-ST2CD183J

J

AA

18 kohms,1/6W

R253,254

VRD-ST2CD103J

J

AA

10 kohm,1/6W

R256

VRD-ST2CD684J

J

AA

680 kohms,1/6W

R301

VRD-ST2CD103J

J

AA

10 kohm,1/6W

R302

VRD-ST2CD222J

J

AA

2.2 kohms,1/6W

R303

VRD-ST2CD103J

J

AA

10 kohm,1/6W

R304

VRD-ST2CD222J

J

AA

2.2 kohms,1/6W

R305

VRD-ST2CD472J

J

AA

4.7 kohms,1/6W

R306

VRD-ST2CD682J

J

AA

6.8 kohms,1/6W

R307

VRD-ST2CD392J

J

AA

3.9 kohms,1/6W

R308

VRD-ST2CD472J

J

AA

4.7 kohms,1/6W

R309

VRD-ST2CD682J

J

AA

6.8 kohms,1/6W

R310

VRD-ST2CD392J

J

AA

3.9 kohms,1/6W

R311,312

VRD-ST2CD334J

J

AA

330 kohms,1/6W

R313

VRD-ST2CD471J

J

AA

470 ohms,1/6W

R314,315

VRD-ST2CD222J

J

AA

2.2 kohms,1/6W

R316

VRD-ST2CD471J

J

AA

470 ohms,1/6W

R317,318

VRD-ST2CD103J

J

AA

10 kohm,1/6W

R321,322

VRD-ST2CD472J

J

AA

4.7 kohms,1/6W

R325,326

VRD-ST2CD223J

J

AA

22 kohms,1/6W

R401,402

VRD-ST2CD183J

J

AA

18 kohms,1/6W

R403,404

VRD-ST2CD333J

J

AA

33 kohms,1/6W

R405,406

VRD-ST2CD221J

J

AA

220 ohms,1/6W

R407,408

VRD-ST2EE151J

J

AA

150 ohms,1/4W

R409

VRD-ST2CD2R2J

J

AA

2.2 ohms,1/4W

R410

VRD-ST2CD561J

J

AA

560 ohms,1/6W

R413,414

VRD-ST2EE3R3J

J

AA

3.3 ohms,1/4W

R423

VRD-ST2CD473J

J

AA

47 kohms,1/6W

R432,433

VRD-ST2CD102J

J

AA

1 kohm,1/6W

R434

VRD-ST2CD223J

J

AA

22 kohms,1/6W

R501

VRD-ST2CD561J

J

AA

560 ohms,1/6W

OTHER CIRCUITRY PARTS

CN201

92L3421-773001

J

Connector Ass’y,4Pin

CN202

92L3421-776001

J

Connector Ass’y,5Pin

CN203

92L3421-775001

J

Connector Ass’y,2Pin

CN301

92L3421-799001

J

Connector Ass’y,3Pin

CN302

92L3421-777001

J

Connector Ass’y,3Pin

CN303

92L3421-780001

J

Connector Ass’y,7Pin

CN501

92L3421-778001

J

Connector Ass’y,5Pin

CN503

92L3421-783001

J

Connector Ass’y,4Pin

CN504

92L3421-774001

J

Connector Ass’y,4Pin

CON201,202

92L3101-054003

J

Plug,4Pin

CON203

92L3101-054001

J

Plug,2Pin

CON301,302

92L3101-054002

J

Plug,3Pin

CON303

92L3101-054006

J

Plug,7Pin

CON501

92L3101-094004

J

Plug,5Pin

CON502

92L3101-094001

J

Plug,2Pin

CON503,504

92L3101-094003

J

Plug,4Pin

CON601

92L3421-782001

J

Connector Ass’y,2Pin

1

F501

92L5301-021001

J

Fuse,T2A L 250V

JK201

92L3202-013001

J

Jack,Mixing Microphone

JK301

92L3201-073001

J

Jack,Line Input

JK401

92L3202-024001

J

Jack,Headphones

M601(241-5)

92L02103007B-0

J

Motor with Pulley [Tape]

MIC

92L7201-002001

J

Built-in Microphone

S101

92L4103-022001

J

Switch,Slide Type[Band Selector]

S201

92L4104-013001

J

Switch,Push Type

[Record/Playback]

S301

92L4103-022001

J

Switch,Slide Type

[Function/Beat Cancel]

S302

92L4104-002001

J

Switch,Push Type [X-BASS]

1

SO501

92L3204-016001

J

AC Input Socket

SP501~504

92L4801-083001

J

Speaker

1

SW501

92L4106-011001

J

Switch,Slide Type

[Voltage Selector]

SW601(241-6) 92L4110-007001

J

Switch,Leaf Type [Tape Main]

CABINET PARTS

201

92L799QT800101

J

Front Cabinet Ass’y

202

92L799QT800301

J

Rear Cabinet Ass’y

202- 1

92L202QT800101

J

Rear Cabinet

202- 2

92L236QT800101

J

Plate,Battery Cover

203

92L799QT800501

J

Top Panel Ass’y

203- 1

92L201QT800101

J

Top Panel

203- 2

92L286QT800101

J

Name Plate,SHARP

204

92L799QT800601

J

Dial Drum Ass’y

204- 1

92L242QT800101

J

Dial Drum

204- 2

92L579QT800101

J

Label,Frequency Range

205

92L210QT800101

J

Cover,Battery

206

92L211QT800101

J

Cover,Cassette Holder

207

92L220QT800101

J

Bracket,Tape Mechanism/Main PWB

208

92L226QT800101

J

Bracket,Tuning Knob

209

92L227QT800101

J

Bracket,Cassette Holder Cover

210

92L248QT800101

J

Handle

211

92L251QT800101

J

Holder,Bar Antenna

212

92L260QT800101

J

Lens,Dial Tuning

213

92L270QT800101

J

Knob,Tuning

214

92L270QT800201

J

Knob,Fine Tuning

215

92L272QT800101

J

Button,Record

216

92L272QT800201

J

Button,Play

217

92L272QT800301

J

Button,Rewind

218

92L272QT800401

J

Button,Fast Forward

219

92L272QT800501

J

Button,Stop/Eject

220

92L272QT800601

J

Button,Pause

221

92L273QT800101

J

Knob,Volume

222

92L273QT800201

J

Button,X-BASS

223

92L278QT800101

J

Knob,Band Selector

224

92L278QT800101

J

Knob,Function

225

92L289QT800101

J

Ring,Volume Knob

226

92L290QT800101

J

Gear,Dial

227

92L430QT800101

J

Heat Sink

228

92L43330616501

J

Rod Antenna

229

92L471QT800101

J

Spring,Cassette Holder

230

92L47423010101

J

Spring,Battery,-

231

92L47470120101

J

Spring,B

232

92L476QT800101

J

Spring,Record

233

92L489QT800101

J

Bracket,Rod Antenna

234

92L579QT800103

J

Label,Specifications

235

92L250QT800101

J

Bracket,X-BASS PWB

236

92L70338050101

J

Damper Gear Ass’y

237

92L42838560501

J

Bracket,Tape Mechanism

238

92L7603-002001

J

Ferrite Bar

239

92L3451-000127

J

Lead Wire with Lug

1

240

92L45670120101

J

Holder,Fuse

241

92L7702-003001

J

Tape Mechanism Ass’y

241- 1

92L02104003A-0

J

Belt,REW/FF

241- 2

92L02104007A-0

J

Belt,Main

241- 3

92L155-2AM

J

Head,Record/Playback

241- 4

92L6PA

J

Head,Erase

241- 5(M601)

92L02103007B-0

J

Motor with Pulley [Tape]

241- 6(SW601) 92L4110-007001

J

Switch,Leaf Type [Tape Main]

Summary of Contents for QT-80W

Page 1: ...DE OF P W BOARD 12 NOTES ON SCHEMATIC DIAGRAM 14 TYPES OF TRANSISTOR 14 VOLTAGE 14 PARTS GUIDE EXPLODED VIEW 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 SERVICE MANUAL SHARP CORPORATION No S4129QT80W This document has been published to be used for after sales service only The contents are subject to...

Page 2: ...QACCL0008AW00 AC 110 127 220 240 V 50 60 Hz DC 12 V D size UM SUM 1 R20 or HP 2 battery x 8 20 W MPO 18 W 9 W 9 W AC operation 10 T H D RMS 10 W 5 W 5 W 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 2 kg 9 3 lbs without batteries Gen...

Page 3: ...ise 5 Reassemble the front cabinet 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 Built in Microphone 12 Extra Bass Button 13 Fine Tuning Control 14 Tuning Control 15 Mixing Microphone Socket 16 Line Input Sockets 17 AC Voltage Selector 18 AC In...

Page 4: ...ly 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 G1 x2 ø3x12mm C2 x2 ø4x14mm G2 x1 ø3x8m...

Page 5: ...1 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 5 3 and then extract the erase head upward Note After replacing the heads and performing the azimuth adjustment be sure to apply screwlock How to remove the pinch roller See Fig 5 4 1 Remove the screw B1 x 1 pc and remove the pinch roller upwards Figure 5 3 Figure 5 4 REMOVING AND ...

Page 6: ...ote When mounting the motor pay attention to the motor bracket angle Figure 6 1 Figure 6 2 Figure 6 3 How to remove the flywheel See Fig 6 3 1 Remove the belt See Fig 6 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 How to reinstall the parts Install ea...

Page 7: ... end 87 4 MHz 4 Repeat step 2 3 until no further improvement can be made 5 FM TRACKING Same as step 2 Same as step 2 Same as step 1 Adjust P V C TC2 to Tune P V C to fH 106 MHz get MAX output 106 MHz 6 FM TRACKING Same as step 2 Same as step 2 Same as step 1 Adjust L102 to get MAX Tune P V C to fL 90 MHz output 90 MHz 7 Repeat step 5 6 and then step 2 3 5 6 until no further improvement can be made...

Page 8: ...osition oscilloscope 3 Tune P V C to 3 Power supply high end 2 SW1 BAND Same as step 1 Same as step 1 Same as step 1 Adjust T104 get MAX Tune P V C to low COVERAGE fL output at 2 25 MHz end 2 25MHz 3 Repeat step 1 2 until no further improvement can be made 4 SW1 Same as step 1 Same as step 1 Same as step 1 Adjust CT104 get MAX Tune P V C to 6 MHz TRACKING fH output at 6 MHz 6 MHz 5 SW1 Same as ste...

Page 9: ...back Head Tape Mechanism TP2 FM BAND COVERAGE FM DETECTION BIAS OSCILLATION FM TRACKING fL fH MW BAND COVERAGE fH MW TRACKING fH T105 T104 T103 CT101 CT102 T106 VR102 IC102 T102 CT104 T107 T101 CT103 T108 TUNER P V C L103 IC101 1 9 L102 T201 IC201 MAIN PWB L109 MW BAR ANTENNA TC1 TC2 TC3 TC4 MW BAND COVERAGE fL SW1 BAND COVERAGE fH fL SW1 TRACKING fL fH SW2 TRACKING fL fH SW2 BAND COVERAGE fL fH M...

Page 10: ... C235 47 16 Q204 SS8550 C231 1 50 R233 1 8K C230 0 01 ML CON301 R301 10K R303 10K R302 2 2K R304 2 2K R211 18K C211 0 0022 ML R212 18K C212 0 0022 ML T201 BIAS OSCILLATION C216 0 0027 C223 100P R253 10K R254 10K CON201 CN201 C251 0 018 ML C220 0 0068 ML C219 0 022 ML Q201 3DA8050 R247 220 C218 47 16 R225 22K R224 10 C207 0 47 50 C208 0 47 50 C206 0 022 ML R231 120K C201 0 0015 ML R204 150 R208 5 6...

Page 11: ...01 AC 110 127 V 3 1 3 6 5 1 B B B B B B B B B B IC BLOCK DIAGRAM TAPE STAND BY FM ST FM MONO BEAT LINE S301 FUNCTION BEAT CANCEL MOTOR CONTROL REGULATOR VOLUME CONTROL VOLUME CONTROL X BASS CONTROL X BASS CONTROL R221 220 R305 4 7K CN302 S302 X BASS R308 4 7K CON504 D401 1N4148 T72 Q401 3DA8050 C514 100 16 ZD401 TZX10V C R410 560 C415 100 16 Q304 2SC945 R326 22K R309 6 8K R310 3 9K R318 10K C302 2...

Page 12: ...04 Q303 R223 R222 R217 R243 R244 R326 R325 C308 R311 C305 R218 R306 R316 Q301 Q302 C301 R313 C307 R312 C306 C302 R305 R307 R309 R308 R310 C303 C304 CON302 S301 C310 CON303 C311 C312 1 1 2 3 4 5 6 7 2 3 4 E C B Q501 CON201 R501 C516 C416 S201 RECORD PLAYBACK ZD501 C415 R410 C514 Q401 E E B B C C 1 1 2 3 4 5 6 7 8 9 10 11 12 2 3 4 C518 ZD401 C417 R405 C402 D401 C401 R403 R404 C403 R321 R401 C404 R42...

Page 13: ...R CH CN503 BK BK RD RD BK RD BK RD BR COLOR TABLE RD R OR YL GR BL BROWN RED ORANGE YELLOW GREEN BLUE JACK PWB A2 VOLUME PWB A4 1 7 1 2 3 CN202 CN301 5 4 3 2 1 WH PK WH X BASS PWB A5 7 6 5 4 3 2 1 CN303 RD RD RD BK 1 SW501 VOLTAGE SELECTOR AC 220 V 240 V AC 110 V 127 V BL BK WH VL GY WH W BK PK VIOLET GRAY WHITE BLACK PINK T501 POWER TRANSFORMER YL YL PK WH WH CN302 1 2 3 1 3 HEADPHONES PWB A3 CN5...

Page 14: ...N POSITION E C B FRONT VIEW 2SC945 3DA8550 SS8550 E B C FRONT VIEW 3DA8050 IC101 LA1186N FM Pin No Voltage IC201 BA3313L PLAYBACK Pin No Voltage IC102 LA1805 FM Pin No Voltage Pin No Voltage IC102 LA1805 MW SW1 SW2 Pin No Voltage Pin No Voltage IC401 BA5415A FULL POWER Pin No Voltage Q404 SS8550 Pin No Voltage Q405 SS8550 Pin No Voltage Q501 3DA8050 Pin No Voltage Q301 2SC945 Pin No Voltage Q207 2...

Page 15: ...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 If there are no indications for the electrolytic capacitors error is...

Page 16: ...F 50V Mylar C127 129 VCEAZA1HW105M J AB 1 µF 50V Electrolytic C131 VCTYPA1HB152K J 1500 pF 50V C132 133 VCEAZA1HW335M J AB 3 3 µF 50V Electrolytic C134 VCTYPA1HB471K J 470 pF 50V C135 VCQYKA1HM822K J AA 0 0082 µF 50V Mylar C136 VCTYPA1HM472K J 4700 pF 50V C137 VCKYPA1CF224Z J 0 22 µF 16V C138 VCEAZA1CW227M J AC 220 µF 16V Electrolytic C139 VCKYPA1HF203Z J 0 02 µF 50V C141 VCCCPA1HH100J J AA 10 pF ...

Page 17: ...ctor Ass y 3Pin CN302 92L3421 777001 J Connector Ass y 3Pin CN303 92L3421 780001 J Connector Ass y 7Pin CN501 92L3421 778001 J Connector Ass y 5Pin CN503 92L3421 783001 J Connector Ass y 4Pin CN504 92L3421 774001 J Connector Ass y 4Pin CON201 202 92L3101 054003 J Plug 4Pin CON203 92L3101 054001 J Plug 2Pin CON301 302 92L3101 054002 J Plug 3Pin CON303 92L3101 054006 J Plug 7Pin CON501 92L3101 09400...

Page 18: ...L66090752012 J Nut ø9 ø12 2mm 619 92L62030061070 J Screw ø3 10mm 620 92L61440041010 J Screw ø4 10mm 621 92L53008003008 J Washer ø3 ø8 0 8mm ACCESSORIES PACKING PARTS 1 QACCB0012AW00 J AS AC Power Supply Cord 1 QACCE0007AW00 J AH AC Power Supply Cord 1 QACCL0002AW00 J AN AC Power Supply Cord 1 QACCL0008AW00 J AC Power Supply Cord 1 QPLGA0003AWZZ J AF Adaptor AC Plug 1 QPLGA0004AWZZ J AF Adaptor AC ...

Page 19: ...620 230 233 612 239 616x2 615x2 621 209 207 614 609 601 226 208 606 211 238 603 214 PWB A1 619x2 204 213 204 2 204 1 236 224 223 215 217 219 216 237 218 220 232 604 203 240x2 203 1 203 2 606x3 613x4 SP501 212 225 221 618 SP502 SP503 201 MIC SP504 613x4 611x3 222 235 613x4 613x4 229 TAPE MECHANISM 241 241 1 241 2 241 3 241 4 241 5 M601 241 6 SW601 PWB A5 PWB A4 Motor M601 REW FF Clutch Flywheel FF ...

Page 20: ...by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher COPYRIGHT 2001 BY SHARP CORPORATION ALL RIGHTS RESERVED A0105 1213DS HA C SHARP CORPORATION AV Systems Group Audio Systems Division Higashihiroshima Hiroshima 739 0192 Japan Printed in Japan EX ...

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