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PRICE

RANK

DESCRIPTION

NO.

PARTS CODE

NO.

PARTS CODE

PRICE

RANK

DESCRIPTION

QT-90W

– 1 –

INTEGRATED CIRCUITS

IC101

VHILA1186N/-1

J

AE

FM Front End,LA1186N

IC102

VHILA1805//-1

J

AM FM IF Det./MW/SW Mixer,

LA1805

IC201

92L2301-461001

J

Playback/Record Pre Amp.&

Control,BA3313L

IC301

92L2301-145001

J

Surround Effect Control,BA4558

IC401,402

92L2301-455001

J

Power Amp.,BA5415A

IC501

VHILB1403N/-1

J

AG Level Meter & Surround

Indicater,LB1403N

TRANSISTORS

Q201

92L2103-109001

J

Silicon,NPN,3DA8050

Q205

92L2103-032001

J

Silicon,NPN,2SC945

Q207

92L2103-025001

J

Silicon,PNP,SS8550

Q209

92L2103-032001

J

Silicon,NPN,2SC945

Q301

92L2103-032001

J

Silicon,NPN,2SC945

Q303~306

92L2103-032001

J

Silicon,NPN,2SC945

Q401,402

92L2103-032001

J

Silicon,NPN,2SC945

Q501

92L2103-032001

J

Silicon,NPN,2SC945

Q601

92L2103-109001

J

Silicon,NPN,3DA8050

Q602,603

92L2103-025001

J

Silicon,PNP,SS8550

Q604

92L2103-109001

J

Silicon,NPN,3DA8050

DIODES

D103,104

VHD1N4148//-1

J

AA

Silicon,1N4148

D201

VHD1N4148//-1

J

AA

Silicon,1N4148

D301~303

VHD1N4148//-1

J

AA

Silicon,1N4148

D501

92L2501-010001

J

Silicon,1N4148

D601~604

92L2501-011001

J

Silicon,1N5401

LD501~505

92L2509-069001

J

LED,Red,523HD

LD507,508

92L2509-007001

J

LED,Green,CSL-326G3GTH

VD101

92L2507-001001

J

Silicon,1S2638

ZD601

92L2504-003019

J

Zener,8.2V,TZX8V2C

ZD602

92L2504-003003

J

Zener,13V,TZX13V-B

FILTERS

BP101

92L4401-008001

J

Band Pass Filter,10.7 MHz

CF101

RFILF0072AFZZ

J

AG FM IF,10.7 MHz

CF102

92L4403-011001

J

AM IF

TRANSFORMER

1

T501

92L5102-111001

J

Power

COILS

L102

92L1107-009001

J

FM RF

L103

92L1107-007001

J

FM Oscillation

L109

92L7602-001001

J

MW Bar Antenna

T101

92L1111-025001

J

SW1 Antenna

T102

92L1104-092001

J

SW2 Antenna

T103

92L1104-091001

J

MW Oscillation

T104

92L1104-090001

J

SW1 Oscillation

T105

92L1104-089001

J

SW2 Oscillation

T106

92L1104-024001

J

FM Detection

T107

92L1104-094001

J

MW IF

T108

92L1104-038001

J

FM IF,10.70 MHz

T201

92L1104-093001

J

Bias Oscillation

VARIABLE RESISTORS

VR101

92L1701-052001

J

100 kohm (B),Semi-VR

[Fine Tuning]

VR102

92L1601-001001

J

10 kohm (B),Semi-VR [VCO]

VR301

92L1702-007001

J

100 kohm (B)

×

2 [X-BASS]

VR302,303

92L1702-006001

J

100 kohm (B)

×

2

[Graphic Equalizer]

VR304

92L1701-049001

J

50 kohms (B)

×

2 [Volume]

VARIABLE CAPACITORS

CT101~104

92L1341-007001

J

Trimmer,10 pF

VC1~4

92L1340-003001

J

Variable Capacitor with Trimmer

(TC1~4)

CAPACITORS

C101

VCKYPA1HB102K

J

AA

0.001 

µ

F,50V

C102

VCCSPA1HL102J

J

AA

0.001 

µ

F,50V

C103

VCEAZA1CW106M J

AC

10 

µ

F,16V,Electrolytic

C104

VCCSPA1HL102J

J

AA

0.001 

µ

F,50V

C106

VCCCPA1HH180J

J

AA

18 pF (CH),50V

C107

VCCCPA1HH150J

J

AA

15 pF (CH),50V

C108

VCCCPA1HH200J

J

AA

20 pF (CH),50V

C109

VCCCPA1HH5R0C J

AA

5 pF (CH),50V

C110

VCKYPA1HF203Z

J

0.02 

µ

F,50V

C111

VCCCPA1HH330J

J

AA

33 pF (CH),50V

C112

VCCCPA1HH5R0C J

AA

5 pF (CH),50V

C113

VCTYPA1HB152K

J

1500 pF,50V

C114

VCQYKA1HM472K J

AB

0.0047 

µ

F,50V,Mylar

C115

VCCCPA1HH5R0C J

AA

5 pF (CH),50V

C116,117

VCKYPA1HF203Z

J

0.02 

µ

F,50V

C118

VCKYPA1HF104Z

J

0.1 

µ

F,50V

C119

92L1321-002005

J

0.02 

µ

F,50V

C120

VCEAZA1CW106M J

AC

10 

µ

F,16V,Electrolytic

C121

92L1321-002005

J

0.02 

µ

F,50V

C122

VCKYPA1HF104Z

J

0.1 

µ

F,50V

C123

VCKYPA1HF203Z

J

0.02 

µ

F,50V

C124

VCEAZA1CW226M J

AC

22 

µ

F,16V,Electrolytic

C125,126

VCQYKA1HM153K J

AB

0.015 

µ

F,50V,Mylar

C127~129

VCEAZA1HW105M J

AB

µ

F,50V,Electrolytic

C130

VCKYPA1HF203Z

J

0.02 

µ

F,50V

C131

VCTYPA1HB152K

J

1500 pF,50V

C132,133

VCEAZA1HW335M J

AB

3.3 

µ

F,50V,Electrolytic

C134

VCCSPA1HL471K

J

AA

470 pF,50V

C135

VCQYKA1HM822K J

AA

0.0082 

µ

F,50V,Mylar

C136

VCQYKA1HM472K J

AB

0.0047 

µ

F,50V,Mylar

C137

92L1321-002005

J

0.02 

µ

F,50V

C138

VCEAZA1CW227M J

AC

220 

µ

F,16V,Electrolytic

C139

VCKYPA1HF203Z

J

0.02 

µ

F,50V

C140

VCKYPA1HF104Z

J

0.1 

µ

F,50V

C141

92L1321-001083

J

5 pF (CH),50V

C142

VCEAZA1CW107M J

AC

100 

µ

F,16V,Electrolytic

C143

92L1321-001003

J

8 pF (CH),50V

C201,202

VCQYKA1HM152J

J

AB

0.0015 

µ

F,50V,Mylar

C203,204

VCEAZA1CW106M J

AC

10 

µ

F,16V,Electrolytic

C205,206

VCQYKA1HM223K J

AB

0.022 

µ

F,50V,Mylar

C207,208

VCEAZA1HW475M J

AB

4.7 

µ

F,50V,Electrolytic

C209,210

VCQYKA1HM822K J

AA

0.0082 

µ

F,50V,Mylar

C211,212

VCQYKA1HM222K J

AA

0.0022 

µ

F,50V,Mylar

C213

VCEAZA1CW476M J

AB

47 

µ

F,16V,Electrolytic

C214

VCEAZA1CW227M J

AC

220 

µ

F,16V,Electrolytic

C215

VCTYPA1HB103K

J

0.01 

µ

F,50V

C217

VCCCPA1HH470J

J

AA

47 pF (CH),50V

C220

VCQYKA1HM682K J

AA

0.0068 

µ

F,50V,Mylar

C221

VCQYKA1HM223K J

AB

0.022 

µ

F,50V,Mylar

C223,224

VCEAZA1HW105M J

AB

µ

F,50V,Electrolytic

C225

VCEAZA1CW476M J

AB

47 

µ

F,16V,Electrolytic

C227

VCEAZA1CW106M J

AC

10 

µ

F,16V,Electrolytic

C231

VCQYKA1HM183K J

AB

0.018 

µ

F,50V,Mylar

C233

VCEAZA1HW474M J

AB

0.47 

µ

F,50V,Electrolytic

C237

VCEAZA1CW476M J

AB

47 

µ

F,16V,Electrolytic

C257

VCEAZA1CW106M J

AC

10 

µ

F,16V,Electrolytic

C258

VCCCPA1HH330J

J

AA

33 pF (CH),50V

C259,260

VCKYPA1HB681K

J

AA

680 pF,50V

C261

VCCCPA1HH330J

J

AA

33 pF (CH),50V

C301,302

VCEAZA1HW105M J

AB

µ

F,50V,Electrolytic

C303,304

VCQYKA1HM103K J

AA

0.01 

µ

F,50V,Mylar

C305,306

VCQYKA1HM332K J

AA

0.0033 

µ

F,50V,Mylar

C307,308

VCEAZA1HW475M J

AB

4.7 

µ

F,50V,Electrolytic

C309

VCEAZA1CW476M J

AB

47 

µ

F,16V,Electrolytic

C310

VCEAZA1CW107M J

AC

100 

µ

F,16V,Electrolytic

C311

VCEAZA1CW227M J

AC

220 

µ

F,16V,Electrolytic

C312

VCQYKA1HM102K J

AA

0.001 

µ

F,50V,Mylar

C313,314

VCQYKA1HM154K J

AB

0.15 

µ

F,50V,Mylar

C315

VCQYKA1HM102K J

AA

0.001 

µ

F,50V,Mylar

C316

VCQYKA1HM473K J

AB

0.047 

µ

F,50V,Mylar

C317

VCEAZA1HW475M J

AB

4.7 

µ

F,50V,Electrolytic

C318~320

VCEAZA1CW476M J

AB

47 

µ

F,16V,Electrolytic

C327,328

92L1323-015003

J

0.01 

µ

F,50V

C329,330

92L1323-015011

J

0.0027 

µ

F,50V

C331,332

92L1323-014017

J

560 pF,50V

C333,334

92L1323-015008

J

0.0068 

µ

F,50V

C335,336

92L1323-015014

J

0.0015

µ

F,50V

C339,340

VCEAZA1HW105M J

AB

µ

F,50V,Electrolytic

C342

VCEAZA1CW476M J

AB

47 

µ

F,16V,Electrolytic

C343,344

VCEAZA1HW105M J

AB

µ

F,50V,Electrolytic

Summary of Contents for QT-90W

Page 1: ... 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 General Power source Power consumption Output power Speakers Output terminal...

Page 2: ...ord 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 Com...

Page 3: ...ove 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 Figure 3 4 How to att...

Page 4: ...tract 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 4 4 1 Remove the screw B1 x 1 pc and remove the pinch roller upwards Figure 4 3 Figure 4 4 REMOVING AND REINSTALLING THE MAIN PARTS Pinch Roller B1 x1 ø1 5x2 5mm J1 x4 ø3x10mm Tape Mechanism Stop Eject Buttom Push Open Cassette Holder K1...

Page 5: ...ote When mounting the motor pay attention to the motor bracket angle Figure 5 1 Figure 5 2 How to remove the flywheel See Fig 5 3 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 How to reinstall the parts Install each part in ...

Page 6: ...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 7: ...sition 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 25 MHz 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 8: ...pe Mechanism Figure 8 2 ADJUSTMENT POINTS 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...

Page 9: ... SS8550 E B C FRONT VIEW 3DA8050 FRONT VIEW FRONT VIEW CSL 326G3GTH 523HD 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 PinNo Voltage IC401 IC402 BA5415A Pin No Voltage Q603 SS8550 Pin No Voltage Q602 SS8550 Pin No Voltage Q205 2SC945 Pin No Voltage Q303 2SC945 Pin No Voltage Q304 2SC945 Pi...

Page 10: ...ML R211 18K C211 0 0022 ML T201 BIAS OSCILLATION C217 47P CH R256 10K R255 10K CON201 CN201 C231 0 018 ML C220 0 0068 ML C221 0 022 ML Q201 3DA8050 R228 10 C225 47 16 R227 22K C207 4 7 50 C208 4 7 50 C206 0 022 ML C201 0 0015 ML R204 39 R208 6 8K R201 3 9K C213 47 16 C259 680P R213 470K C258 33P CH C204 10 16 C202 0 0015 ML R202 3 9K IC201 BA3313L C209 0 0082 ML R215 47K C210 0 0082 ML R216 47K Q2...

Page 11: ... 250V CON601 CN601 T501 POWER TRANSFORMER CON401 CN401 R408 150 R407 150 JK401 HEADPHONES CON402 CN402B SP501 SURROUND L CH SP502 L CH S501 VOLTAGE SELECTOR S301 FUNCTION BEAT CANCEL Q501 2SC945 LD501 523HD LD502 523HD LD503 523HD LD504 523HD LD505 523HD LD508 CSL 326G3GTH LD507 CSL 326G3GTH R501 10K C502 10 16 C501 10 16 R505 10K R504 1K R502 120 R506 470 R503 120 R507 10K D501 1N4148 SW501 SURRO...

Page 12: ...214 C101 Q209 R255 R256 C225 R249 R248 R233 R222 R258 R257 R221 C224 R235 Q205 R226 Q207 R114 R116 C237 C125 C126 C129 C223 1 2 3 4 5 CON203 C134 TP4 R104 R118 C128 R115 R113 R103 R123 C110 C127 CF102 1 2 3 C122 C141 T107 C124 C123 R101 CF101 R117 D104 T108 D103 C109 C104 C106 C102 R122 C140 R102 L103 C108 C107 C139 C103 VC4 TC4 VC3 TC3 VC2 TC2 VC1 TC1 CT104 CT103 T101 T102 C115 R106 C116 C117 R10...

Page 13: ...RD R OR YL GR BL BROWN RED ORANGE YELLOW GREEN BLUE VL GY WH W BK PK VIOLET GRAY WHITE BLACK PINK AC POWER SUPPLY CORD AC 110 127 V AC 220 240 V 50 60 Hz JACK PWB A2 SW501 X BASS OFF ON A B SURROUND PWB A5 CN501 1 2 3 4 5 1 5 SO501 AC INPUT SOCKET AC 110 127 V AC 220 240 V 50 60 Hz RD RD BK S501 VOLTAGE SELECTOR AC 220 V 240 V AC 110 V 127 V BL BK WH T501 POWER TRANSFORMER 231 RD RD RD WH BL 230 B...

Page 14: ... ripple filter 62 IC201 BA3313L OUT 1 NF 1 IN 1 GND 150K IN 2 NF 2 ALC 150K ALC N C GND SUB VCC FILTER OUT 2 1 3 5 7 9 11 2 4 6 8 10 12 IC101 LA1186N VRE1 RF MIX REG BUTTER OSC IC102 LA1805 Vcc FM AM RF AMP MIX RNG OSC GND AGC AM IF DET LEVEL DET TUNING INDIC DRIVE FM IF DCT MUTING POST AMP PILOT DET PHASE DET DECODER VCO FF STEREO SW FF TNG STEREO INDIC DRIVE Vcc FF 3 5 1 2 20 17 16 11 13 15 14 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: ...152K J 1500 pF 50V C114 VCQYKA1HM472K J AB 0 0047 µF 50V Mylar C115 VCCCPA1HH5R0C J AA 5 pF CH 50V C116 117 VCKYPA1HF203Z J 0 02 µF 50V C118 VCKYPA1HF104Z J 0 1 µF 50V C119 92L1321 002005 J 0 02 µF 50V C120 VCEAZA1CW106M J AC 10 µF 16V Electrolytic C121 92L1321 002005 J 0 02 µF 50V C122 VCKYPA1HF104Z J 0 1 µF 50V C123 VCKYPA1HF203Z J 0 02 µF 50V C124 VCEAZA1CW226M J AC 22 µF 16V Electrolytic C125 ...

Page 17: ... 1 6W R303 304 VRD ST2CD103J J AA 10 kohm 1 6W R305 VRD ST2CD474J J AA 470 kohms 1 6W R306 307 VRD ST2CD222J J AA 2 2 kohms 1 6W R308 311 VRD ST2CD123J J AA 12 kohms 1 6W R312 313 VRD ST2CD222J J AA 2 2 kohms 1 6W R314 315 VRD ST2CD103J J AA 10 kohm 1 6W R316 VRD ST2CD121J J AA 120 ohms 1 6W R317 VRD ST2CD222J J AA 2 2 kohms 1 6W R318 319 VRD ST2CD473J J AA 47 kohms 1 6W R320 321 VRD ST2CD682J J A...

Page 18: ...70338050101 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 P...

Page 19: ...5x2 209 207 614 609 601 226 621 208 606x2 606x2 211 238 227 Silicon Grease 603 214 PWB A1 619x2 204 213 204 2 204 1 236 224 223 215 217 219 216 218 220 232 604 203 240x2 203 1 203 2 606x3 611x2 SP501 212 225 221 618 SP502 SP503 201 MIC SP504 611x3 222 613x4 613x4 613x4 613x4 229 TAPE MECHANISM 241 241 1 241 2 241 3 241 4 241 5 M601 241 6 SW601 PWB A5 PWB B PWB A4 Motor M601 REW FF Clutch Flywheel ...

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 A0107 1013DS HA C SHARP CORPORATION AV Systems Group Audio Systems Division Higashihiroshima Hiroshima 739 0192 Japan Printed in Japan EX ...

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