SHARP QT-90W Service Manual

QT-90W

SERVICE MANUAL

No. S6143QT90W///

STEREO RADIO CASSETTE RECORDER

MODEL

• 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.

QT-90W

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

General

Power source

Power consumption
Output power

Speakers
Output terminal
Input terminal

Dimensions

Weight

Specifications for this model are subject to change without prior notice.

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

Radio

Frequency range

Tape recorder

Frequency response
Signal/noise ratio
Wow and flutter
Motor
Bias system
Erase system

FM: 88 - 108 MHz
SW1: 2.3 - 7.3 MHz
SW2: 7.3 - 22 MHz
MW: 526.5 - 1,606.5 kHz

60 - 12,000 Hz (Normal tape)
40 dB

0.3 % (WRMS)
DC 12 V electric governor
AC bias
Magnet erase

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)

This document has been published to be used

SHARP CORPORATION

– 1 –

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.

QACCA0004AW00

AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

QPLGA0003AWZZ

QACCB0012AW00

QACCE0007AW00 QPLGA0004AWZZ

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

QACCL0002AW00/QACCL0008AW00

12345678910

11 12 13 14151617

18 19

22

2120

23

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.

– 2 –

Main PWB
Front Side

Dial Drum “0”
Point Rib

Dial Drum

Front Side

Tuning Knob
Bracket

Dial Drum “0” Point Rib

Mark “ ”

Top Side

2

Figure 2

Gear Dial

Mark “ ”

Tuning Knob
Tuning Knob
“ 0 ” Point Rib

“0” Point of Tuning Display

3

Tuning Knob

Tuning Knob “0” Point Rib

Main PWB

Dial Drum

DISASSEMBLY

QT-90W

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 3-1

2. Screw ................... (A2) x6

3. Screw ................... (A3) x4

2 Front Cabinet 1. Knob..................... (B1) x1 3-1

2. Nut........................ (B2) x1

3. Socket .................. (B3) x4 3-2

3 Jack PWB 1. Socket ..................(C1) x2 3-2

2. Screw ...................(C2) x2

4 Volume PWB 1. Socket ..................(D1) x1 3-2

5 Battery PWB 1. Socket .................. (E1) x1 3-2

2. Hook..................... (E2) x1

6 Headphones PWB 1. Socket .................. (F1) x2 3-2

2. Screw ................... (F2) x1

7 Main PWB with 1. Screw ...................(G1) x2 3-2

Tape Mechanism 2. Screw ...................(G2) x1

8 Main PWB 1. Socket ..................(H1) x2 3-3

2. Screw ...................(H2) x4

3. Solder................... (H3) x2

9 Tape Mechanism 1. Open the cassette holder. 4-1

2. Screw ....................(J1) x4

10 Surroud PWB 1. Screw ................... (K1) x3 4-2

11 Graphic Equalizer 1. Screw ................... (L1) x2 4-2

PWB

(B1)x1

(B2)x1

Rear Cabinet

Headphones

(F2)x1

ø4x14mm

Battery

PWB

(E1)x1

(F1)x1

(B3)x1

(C1)x1

Volume

PWB

(F1)x1

(E2)x1

(B3)x1

PWB

(A3)x4

ø3x12mm

Figure 3-1

Tape Mechanism

(D1)x1

(C1)x1

(B3)x1

Handle

Main PWB

(G1)x2

ø3x12mm

(C2)x2

ø4x14mm

Front Cabinet

(A2)x6

ø3x30mm

(A1)x1

Lug Wire

(G2)x1

ø3x8mm

(B3)x1

Rear Cabinet

Jack PWB

How to attach the tuning display label
(See Fig. 3-4.)

Reference

1. Start Stick Label Matching
With Base Line

Base Line

10

108

1600

9

22.0

7.3

19.0

1400

6.0

104

1200

5.0

15.0

8

7

6

5

100

1000

800

4.0

12.0

Tuning Display Label

96

4

3.2

10.0

700

0

1

88

2

3

540

92

2.3

7.3

600

2.6

8.5

2. This Line Must Be
Stick Matching

Figure 3-4

Dial Drum

Figure 3-2

(H2)x4

ø3x10mm

(H1)x2

(H3)x2

Tape

Mechanism

Main PWB

Figure 3-3

– 3 –

QT-90W

(A1)x2
ø2x7mm

Record/Playback
Head

Hook
(A2)x2

Erase Head

PLAY
Button

Push

Lug Wire

Tape Mechanism

Stop/Eject Buttom

Push

Graphic Equalizer
PWB

Front Cabinet

Open

Cassette

Holder

(J1)x4

ø3x10mm

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.)

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.

Surround PWB

Figure 4-2

(L1)x2

ø2.6x8mm

(K1)x3

ø2.6x8mm

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

(B1)x1
ø1.5x2.5mm

Pinch Roller

Figure 4-4

– 4 –

QT-90W

How to remove the belts (See Fig. 5-1.)

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.

How to remove the motor
(See Fig. 5-2.)

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.

Main Belt
(C1)x1

Flywheel

FF/REW Belt
(C2)x1

Figure 5-1

(D1)x1
ø2x4mm

Motor

Motor

Motor Pulley

REW/FF
Roller

Motor Bracket

(D1)x1
ø2x4mm

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.

(D2)x2
ø2.6x1.6mm
Special Screw

(E1)x 1
Stop Washer

Washer

Washer

Flywheel

Motor Bracket

Motor

Figure 5-2

Driver

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 FM IF: (1) FM IF sweep Inject the IF Signal are taken Adjust T106, T108 (1) Band SW in FM.

2 FM BAND (1) FM RF sweep Inject the RF Same as step 1 Adjust P.V.C. (TC1) Same as step 1

3 FM BAND Same as step 2 Same as step 2 Same as step 1 Adjust L103 to get Tune P.V.C. to low

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

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

7 Repeat step 5, 6 and then step 2, 3, 5, 6 until no further improvement can be made.

Alignment

Frequency

10.7 MHz generator sweep signal out from point TP3 and repeat to get (2) VOL. & TONE
(T108) (2) Alignment through 300 pF best "S" curve with control in MIN.

FM oscilloscope capacitor to point center at 10.7 MHz position
DETECTION: (3) Power supply TP2 (3) Tune P.V.C. to
(T106) high end

COVERAGE fH: generator signal directly to get MAX. output

108.2 MHz (2) Alignment point TP1

COVERAGE fL: MAX. output end

87.4 MHz

fH: 106 MHz get MAX. output 106 MHz

fL: 90 MHz output 90 MHz

Test Equipment

oscilloscope
(3) Power supply

Signal-in

Signal-out

Adjust

Remark

FM Stereo Section

Step

1 VCO: 75 kHz (1) Frequency counter Inject MONO Through test Adjust VR102 let (1) FM and stereo

Alignment

Frequency

Test Equipment

(2) Power supply signal at 98 MHz circuit as Fig 6. Frequency counter position
(3) FM Signal directly to point value: 76 K ± 200 Hz. (2) Tune radio to
generator TP1 and ground 98 MHz

Pin 13 of IC102

Signal-in Signal-out

Pin 21 of IC102

Adjust

Remark

D

G

FET: 2SK212
(or other 2SK type FET.)

10 pF

S

1M ohm

0.1 µF

To frequency
counter

10K ohm

Figure 6

– 6 –

QT-90W

MW Section

Step

1 MW IF: 455 kHz (1) AM IF sweep Let the MW ANT Take out the signal Adjust T107 get MAX. (1) Band SW in MW

2 MW (1) MW sweep Same as step 1 Same as step 1 Adjust P.V.C. (TC3) Same as step 1

3 MW BAND Same as step 2 Same as step 1 Same as step 1 Adjust T103 to get Tune P.V.C. to low

4 Repeat step 2, 3 until no further improvement can be made.
5 MW BAND Same as step 2 Same as step 1 Same as step 1 Adjust P.V.C. (TC4) Tune P.V.C. to

6 MW TRACKING Same as step 2 Same as step 1 Same as step 1 Adjust L109 get MAX. Tune P.V.C. to

7 Repeat step 5, 6 and then step 2, 3, 5, 6 until no further improvement can be made.

Alignment

Test Equipment

Signal-in

Signal-out Adjust

Remark

Frequency

generator with coil close to the from point TP4 output at 455 kHz position

loop antenna generator ANT. (2) VOL. control in MIN.
(2) Alignment position
oscilloscope (3) Tune P.V.C. to
(3) Power supply high end

TRACKING fH: generator with get MAX. output at
1,650 kHz antenna 1,650 kHz

(2) Alignment
oscilloscope
(3) Power supply

COVERAGE fL: MAX. output at 515 kHz end
515 kHz

COVERAGE fH: get MAX. output at 1.400 kHz
1,400 kHz 1,400 kHz

fL: 600 kHz output at 600 kHz 600 kHz

SW1 Section

Step

1 SW1 BAND (1) SW1 sweep Let the MW ANT Take out the signal Adjust CT102 get MAX. (1) Band SW in SW1

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

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

5 SW1 Same as step 1 Same as step 1 Same as step 1 Adjust T101 get MAX. Tune P.V.C. to

6 Repeat step 4, 5 and then step 1, 2, 4, 5 until no further improvement can be made.

Alignment

Test Equipment

Signal-in Signal-out Adjust Remark

Frequency

COVERAGE fH: generator with coil close to the from point TP4 output at 7.4 MHz position

7.4 MHz antenna generator ANT. (2) VOL. control in MIN.

(2) Alignment point TP1 position
oscilloscope (3) Tune P.V.C. to
(3) Power supply high end

COVERAGE fL: output at 2.25 MHz end

2.25 MHz

TRACKING fH: output at 6 MHz
6 MHz

TRACKING fL: output at 2.6 MHz 2.6 MHz

2.6 MHz

SW2 Section

Step

1 SW2 BAND (1) SW2 sweep Inject the RF Take out the signal Adjust CT101 get MAX. (1) Band SW in SW2

2 SW2 BAND Same as step 1 Same as step 1 Same as step 1 Adjust T105 get MAX. Tune P.V.C. to low

3 Repeat step 1, 2 until no further improvement can be made.
4 SW2 Same as step 1 Same as step 1 Same as step 1 Adjust CT103 get MAX. Tune P.V.C. to

5 SW2 Same as step 1 Same as step 1 Same as step 1 Adjust T102 get MAX. Tune P.V.C. to

6 Repeat step 4, 5 and then step 1, 2, 4, 5 until no further improvement can be made.

Alignment

Frequency

COVERAGE fH: generator signal directly to from point TP4 output at 22.5 MHz position

22.5 MHz (2) Alignment point TP1 (2) VOL. control in MIN.

Test Equipment Signal-in

Signal-out

Adjust

Remark

oscilloscope position
(3) Power supply (3) Tune P.V.C. to

high end

COVERAGE fL: output at 7.2 MHz end

7.2 MHz

TRACKING fH: output at 19 MHz 19 MHz
19 MHz

TRACKING fL: output at 8.5 MHz 8.5 MHz

8.5 MHz

– 7 –

QT-90W

L109

MW BAR ANTENNA

MW
TRACKING fL

FM
DETECTION

T103

T104

CT102

T105

CT101

ROD

ANTENNA

VCO

VR102

T106

MW BAND
COVERAGE fL

TP4

fL

SW1 BAND
COVERAGE

fH

fL
fH

TP3

13
17

18

21
24

SW1
TRACKING

SW2 BAND
COVERAGE

TP6

12

IC102

1

TP1

MW IF

T107

fL

fH

T102

T101

T108

FM IF

CT104

CT103

fH

SW2
TRACKING

fL

TP2

IC101

9

8

L103

TC1

TC3

MW
TRACKING fH

fL

FM BAND
COVERAGE

fH

1

TC2

TC4

TUNER P.V.C.

TP5

L102

MW BAND
COVERAGE fH

C221

C220

R227

IC201

fL
fH

T201

BIAS

OSCILLATION

FM
TRACKING

S201

RECORD/PLAYBACK

MAIN PWB

Figure 8-1 ADJUSTMENT POINTS

MECHANISM SECTION

TAPE Section

Step

1 Head Playback test tape Connect VTVM and oscilloscope to Head fixing screw Adjust to get MAX.

2 Bias Frequency Record position Connect frequency counter to TP5 and Adjust T201 80 kHz ± 1 kHz

3 Beat cancel Record position Same as step 3 S201 from playback 75 kHz ± 0.5 kHz

TP5

Item

adjustment MTT-113 6.3 kHz speaker output (see Fig 8-3.) audio output

adjustment ground (Bias Oscillation)

T201

C221

C220

R227

BIAS

OSCILLATION

IC201

S201

REC

Condition

1
2
3
4

CON602

MOTOR

CON201

1
2
3
4

RECORD/PLAYBACK

PLAY
BACK

CN201

SW601

TAPE MAIN

4
3
2
1

CN602

M601
TAPE

1
2
3
4

RECORD/

PLAYBACK HEAD

Connection Adjust

to record

Head fixing
screw

TAPE

Record/
Playback
Head

Output

Tape Mechanism

MAIN PWB

ERASE HEAD

Figure 8-2 ADJUSTMENT POINTS

Erase Head

Figure 8-3

– 8 –

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.

• The indicated voltage in each section is the one measured by

Digital Multimeter between such a section and the chassis
with no signal given.

QT-90W

REF. NO

S101 BAND SELECTOR FM—MW—SW1—SW2
S201 RECORD/PLAYBACK REC— P.B.
S301 FUNCTION/ LINE

S501 VOLTAGE SELECTOR AC 220-240 V—

SW501 SURROUND OFF—ON
SW601 TAPE MAIN OFF—ON

DESCRIPTION

BEAT CANCEL

POSITION

AC 110-127 V

TYPES OF TRANSISTOR AND LED

FRONT

VIEW

ECB

2SC945
SS8550

FRONT

VIEW

EBC

3DA8050

FRONT
VIEW

FRONT
VIEW

CSL-326G3GTH

523HD

IC101: LA1186N [FM]

Pin No.

Voltage

IC102: LA1805 [FM]

Pin No.

Voltage

Pin No.

Voltage

IC102: LA1805 [MW/SW1/SW2]

Pin No.

Voltage

Pin No.

Voltage

IC201: BA3313L [PLAYBACK]

Pin No.

Voltage

IC201: BA3313L [REC]

Pin No.

Voltage

IC401/IC402: BA5415A

Pin No.

Voltage

Q601: 3DA8050

Pin No.

Voltage

1 2 3 4 5 6 7 8 9

0.9V 1.5V 5.3V 0V 0V 5.3V 0V 4.7V 5.3V

1 2 3 4 5 6 7 8 9 10 11 12

1.5V 1.5V 5.5V 2.2V 1.5V 0V 0V 0V 2V 2V 4.8V 0.8V
13 14 15 16 17 18 19 20 21 22 23 24

1.1V 1.5V 1.5V 1.2V 2.3V 0.22V 0.12V 5.5V 5.5V 0V 1.6V 0.8V

1 2 3 4 5 6 7 8 9 10 11 12

1.55V 1.55V 6.7V 0.8V 1.55V 0V 0V 0V 2V 2V 6.5V 0.8V
13 14 15 16 17 18 19 20 21 22 23 24

0V 1.65V 1.1V 1.2V 1.65V 0.8V 0.55V 6.7V 6.5V 1.6V 1.6V 1.6V

1 2 3 4 5 6 7 8 9 10 11 12

2.7V 0.25V 6.6V 0V 6.9V 0V 0V 0V 0V 5.2V 0V 3V

1 2 3 4 5 6 7 8 9 10 11 12

2.8V 0.26V 6.4V 0V 6.8V 0V 0V 0V 0V 0.265V 0V 3V

1 2 3 4 5 6 7 8 9 10 11 12

15V 7.7V 15V 0.6V 5V 5.2V 15V 0V 0.6V 15V 7.8V 0V

1 2 3

E:7.5V B:17V C:8.2V

Q602: SS8550

Pin No.

Voltage

1 2 3
E: 17V C: 17V B:17V

VOLTAGE

Q603: SS8550

Pin No.
Voltage

1 2 3
E: 17V C: 17V B: 0V

Q201: 3DA8050

Pin No.

Voltage

Q205: 2SC945

Pin No.

Voltage

Q207: SS8550

Pin No.

Voltage

Q209: 2SC945

Pin No.

Voltage

Q301: 2SC945

Pin No.
Voltage

Q303: 2SC945

Pin No.

Voltage

Q304: 2SC945

Pin No.

Voltage

Q305/Q306: 2SC945

Pin No.

Voltage

1 2 3
E: 7V B: 6.7V C:7.6V

1 2 3

E: 0V C: 3.5V B:0.5V

1 2 3

E: 7.5V C: 7.5V B: 0V

1 2 3
E: 0V C: 0V B: 5V

1 2 3

E: 0V C: 4V B:0.7V

1 2 3

E: 0V C: 0V B: 5V

1 2 3

E: 0V C: 0V B: 5V

1 2 3
E: 0V C: 4V B:0.7V

– 9 –

QT-90W

A

B

C

D

E

F

G

H

MAIN PWB-A1

ROD

ANTENNA

SELECTOR

S101-C

TP1

VD101
1S2638

C116

0.02

C117

0.02

R108

22K

VR101

100K(B)

FINE TUNING

JACK
PWB-A2

L-CH

JK201

LINE INPUT

R-CH

JK202

MIXING

MICROPHONE

MIC

2
1

CN201A

BUILT-IN

MICROPHONE

RECORD/

PLAYBACK

HEAD

L-CH

TAPE

R-CH

ERASE HEAD

S101
BAND

D104

C115

5P(CH)

R106
100K

R107
100K

GND

CON201A

1N4148

2
1

C233

0.47/50

R240

4
3
2
1

CN201

FM

MW
SW1
SW2

1K

C227

10/16

4
3
2
1

CON201

BAND PASS

FILTER

10.7MHz

S101

BAND

SELECTOR

S101-F

VC4

S101-D

VC3

SELECTOR

4.7K

R234

R

P

R

S201-G

P

BP101

1

3

2

FM

MW
SW1
SW2

S101

BAND

3

1

5

1

C212

0.0022(ML)

S201-C

S201

RECORD/

PLAYBACK

FM

MW
SW1
SW2

3
2
1

CN202

CN203

5
4
3
2
1

P

C101

0.001

L102

FM RF

0.001

0.0047(ML)

C118

0.1

3
2
1

CON202

CON203

5
4
3
2
1

R212

18K

R211

18K

C211

0.0022
(ML)

S201-H

R

C106

18P(CH)

C102

C143

8P(CH)

CT104

CT103

C111

33P(CH)

C112

5P(CH)
C113

1500P

C114

C209

0.0082
(ML)

R251

18K

TP5

47P(CH)

Q209
2SC945

1

10P

10P

CT102

10P

R109

22K

R257

C217

2

C104

R122

10

CT101

10P

R242

27K

R244

27K

R258

47K

47K

R

RECORD/

PLAYBACK

RPR

OSCILLATION

R255

10K

R124

33K

P
S201

IC101

FM FRONT END

LA1186N

4

3

5

0.001

TC2

VC2

C103
10/16

MW BAR ANTENNA

TC4

SW1 ANTENNA

SW2 ANTENNA

TC3

MW OSCILLATION

SW1 OSCILLATION

SW2 OSCILLATION

R245

2.2K

Q207

SS8550

R248

10K

0.01

C215

C210

0.0082
(ML)

R

S201-D

S201-A

P

S201-F

S201-B

P

T201

0.018

BIAS

R256

10K

6789

TP2

C140

0.1
T108

FM IF

D103

1N4148

C139

0.02

L109

T101

T102

R110

T103

T104

T105

R243

2.2K

SWITCHING

C237
47/16

C223

1/50

MIXING MIC

PRE AMP.

IC201

BA3313L

R202

C202

0.0015(ML)

C201

0.0015(ML)

C231

R227

22K

(ML)

C220

0.0068(ML)

100

3.9K

R111

47

R112

R235
680K

R254

47

120K

SELECTOR

MW
SW1
SW2

C119

0.02

R215

OUT1

1

C258

R208

6.8K

3DA8050

C221

0.022(ML)

fL

L103

FM BAND
COVERAGE

fH

TC1

fL

L102

FM
TRACKING

fH

TC2

C107

R102

FM

MW
SW1
SW2

33P(CH)

C204

Q201

C108

15P

20P

(CH)

33

(CH)

L103

FM OSC.

R101

47

S101

BAND

S101-E

C121

0.02

FM

S101-A

S101

BAND

SELECTOR

C120
10/16

R221

330

R226

4.7K

C224

1/50

Q205

2SC945

47K

47K

R216

PLAYBACK/RECORD PRE AMP. & CONTROL

ALC

NF1

N.C.

2 3 4

470K

R213

220K

R206

10/16

R204

39

C206

0.022(ML)

C208

4.7/50

BIAS

OSCILLATION

10

R228

S301-E

FUNCTION/

BEAT CANCEL

T103

TC4

L100

TC3

C109

5P(CH)

TC1

VC1

C138

220/16

CF101

10.7MHz
FM IF

+B +B

FUNCTION/

BEAT CANCEL

R217

150K

R218
150K

S301

R105

1

C122

0.1

S301-B

100

24

AM

OSC

FM IF

1

3

2

FM DET.

0.02

C137

23

STB

2 3 4 5 6

C123

T107

MW IF

22K

R222

IC201

BA3313L

IN1

GND

GND

6 7

5

680P

C259

C213

47/16

C257

10/16

R201

3.9K

C207

4.7/50

C225

47/16

LINE
FM(MONO)/BEAT
FM(ST)
TAPE

(STAND-BY)

S301

fL

MW BAND
COVERAGE

fH
fL

MW
TRACKING

fH

R103

220K

C141

C110

5P(CH)

0.02

T106

C142

100/16

21

22

+VCC

AM RF

AM IF

AM MIX

AGC

C124

22/16

0.02

1

CF102

AM IF

LINE
FM(MONO)/BEAT
FM(ST)

TAPE(STAND-BY)

22K

R233

FILTER

VCC

IN2

8

9

10

C260
680P

R205
220K

C214

220/16

39

R203

C205

0.022(ML)

R210

1.5K

C318
47/16

C319
47/16

C320

D303

47/16

1N4148

R363

10K

3.9K

R121

IC102

FM DET

LA1805

3

2

NF2

11

D201
1N4148

33P(CH)
C203

10/16

R207

R253

R249

120

1N4148

CT102

T104

T101

CT104

R104
820K

C136

0.0047
(ML)

R120

TP4

0.015(ML)

C126

0.015(ML)

OUT2

12

R214

C261

6.8K

120K

R209

1.5K

D302

R362

10K

fL

fH

fL
fH

2.7K

C135

TP3

0.0082(ML)

17181920

DET

OUT

AM IN

GNDGND

7

8 9 10 11

C125

C127

R113

R114

2.2K

R116

2.2K

330

R252

18K

S201-E

R246

D301

1N4148

R361

10K

SW1 BAND
COVERAGE

SW1
TRACKING

S301

FUNCTION/

BEAT CANCEL

R118
100K

470P

C134

C133

3.3/50

C132

15

16

IN

MPX

IF AD

L-CH

R-CH

C128

1/50

10K

R115

R

P

PECORD/

PLAYBACK

22K

R247

22K

3DA8050

+B

0.1

C614

C613

ZD601

T105

CT101

T102

CT103

S301-F

C131

1500P

3.3/50

MW/SW MIXER

13

14

VCO

MO/ST

N.C.

AM/

FM

12

R117

10

1/50

1/50

C129

10K

Q303

2SC945

R314

10K

X-BASS

CONTROL

R315

10K

P

S201-I

R

S201

C618

0.1

Q601

100/16

TZX8V2C

fL

SW2 BAND
COVERAGE

fH
fL

SW2
TRACKING

fH

LINE
FM(MONO)/

BEAT
FM(ST)
TAPE

(STAND-BY)

VR102
10K(B)

VCO

R119

15K

IC102

FM IF DET./

LA1805

S101
BAND

SELECTOR

FM
MW

S101-B

SW1

SW2

C130

0.02

C343
1/50

R320

6.8K

X-BASS

CONTROL

+B

560

R601

SW601

TAPE MAIN

C612

100/16

M

M601
TAPE

MOTOR

R123

100

C344

1/50

R321

6.8K

Q304

2SC945

PLAY

4
3
2
1

CN602

• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.

1

2

34 5

Figure 10 SCHEMATIC DIAGRAM (1/2)

– 10 –

6

QT-90W

FM(MONO)/BEAT

(STAND-BY)

FM(MONO)/BEAT

L IN
R IN

1

3

26

1

3

26

1

VR301

X-BASS

39K

R323

VR301A
100K(B)

0.01

C327

68K

R325

68K

R326

0.01

C328

VR301B
100K(B)

R324

VR301

39K

X-BASS

4

3

+12V

2
1

CON602

LINE

FM(ST)

TAPE

FUNCTION/

BEAT CANCEL

FM(ST)

(STAND-BY)

R327

22K

R355

18K

R354

18K

R328

22K

+B

S301-C

S301

FUNCTION/

BEAT CANCEL

S301

LINE

S301-D

TAPE

L OUT

R OUT

C345

0.022(ML)
C346

0.022(ML)

754

CON301

754

CN301

7

R329

12K

C329

0.0027
R331

12K

C333

0.0068
VR302,VR303 GRAPHIC EQUALIZER

C334

0.0068

R332

12K

C330

0.0027

R330

12K

MOTOR

CONTROL

Q604

3DA8050

C605

220/25

ZD602

L-CH

47K

R319

C304

47K

R318

R352

1.2K
R353

1.2K

GRAPHIC EQUALIZER
PWB-B

VR302A
100K(B)

C331
560P

R333

8.2K

C335

0.0015

C336

0.0015

R334

8.2K

C332
560P

VR302B
100K(B)

R613

560

C606

100/16

TZX13V-B

10K

100K

R303

10K

R-CH

R343

2.7K
C339

1/50

Q305

2SC945
VOLUME

CONTROL

Q306

2SC945

R344

2.7K

+B

FM(MONO)/BEAT

TAPE(STAND-BY)

IC301

BA4558

R306

2.2K
C305

0.0033

(ML)

C306

0.0033

(ML)

R307

2.2K

C315

0.001(ML)

C340

1/50

R612

Fusible

R610

1K

LINE

FM(ST)

3
2

IC301
6

5

R416

2.2

SURROUND EFFECT CONTROL

C301

1/50

C303

R301

0.01(ML)

R304

100K

R302

0.01(ML)

C302

1/50

C311

220/16

R349

560

C342

47/16

R341
680K

C347
330P

C348

330P

R342
680K

R335

8.2K
VR303A

100K(B)

R339

R337

2.7K

8.2K

R338

R340

8.2K

2.7K

VR303B
100K(B)

R336

8.2K

Q603

SS8550

REGULATOR

1K

R611

(1/2)

IC301

(2/2)

330

+B

4

1

R310

12K

R308

12K

C307

4.7/50

C308

4.7/50

R309

12K

R311

12K

7

8

C314

0.15(ML)

R420

2.2K

C416

47K

R421

S301-A

FUNCTION/

BEAT CANCEL

L-CH

R422

2.2K

R IN

10/16

R427

Q602

SS8550

R603

22K

S301

R313

R312

2.2K

C309
47/16

R359

5.6K

C312

0.001(ML)

L IN

33K

+B

2.2K

R350

C310

100/16

R351

10K

R401

R404

1K

R428

33K

C402

+15V DC

10K

1K

Q402

Q401

4.7/50

R-CH

C313

0.15(ML)
R358

5.6K

L OUT

R IN

R OUT

L IN

IC401

BA5415A

POWER AMP.

C401

33K

R403

4.7/50
R405

150

C417

C403

100/25

47/16

R406

C404

33

2SC945

47/16

R402

1K

BA5415A

POWER AMP.

C421

33K

R413

4.7/50
R425

150

C424

C422

100/25

2SC945

47/25

R424

C423

33

47/25

R423

1K

+B

0.02

C601

D601

0.02

C602

D602

+B

C616

3300/25

FM SIGNAL

PLAYBACK SIGNAL

SURROUND
PWB-A5

SURROUND

CONTROL

4

7
2
3

1

6

5

5
4
7
9
8

IC402

5
4
7
9
8

1N5401

1N5401

0.1

C617

CON304

6

IC401

12

6

IC402

12

D603

1N5401

D604

1N5401

1

1

C603

C604

C502
10/16

D501

1N4148

C405

0.1

3
2

11

10

C426

0.1

3
2

11

10

0.02

0.02

CN304
4
6
2
3
1
7
5

C407
47/25

C408
47/25

C406

C429
47/25

C428
47/25

C427

T2.5A L 250V

0.1

0.1

F601

Q501

2SC945
R507

10K

+B

C409

1000/16

C410

1000/16

C411

1000/16

C412

1000/16

MW/SW1/SW2 SIGNAL

RECORD SIGNAL

78

C501

10/16

10K

R502

120

R506

470

4
4

CON402

2
1

3
2
1

CON401

6

R501

5

CN501

5

CON501

5

C316

0.047(ML)

R317

CN402B

3

1

CN401

IC501

LB1403N

5

10K

LD505

523HD

SW501

-13dB

SURROUND

OFF

SW501-A

ON

2.2K

21

CN402A

21

4

LD503

LD504

523HD

-3dB

-8dB

OFF

SW501-B

ON

LD507

CSL-326G3GTH

R305
470K

C317

4.7/50

CN402

R407

150

R408

150

23

LD502

523HD

523HD

0dB

CSL-326G3GTH

SP501
SURROUND
L-CH

SP502
L-CH

SP503
R-CH

SP504
SURROUND
R-CH

LEVEL METER. & SURROUND INDICATER

9

R505

1K

R504

R503

120

1

2

3

1
1

2

3

VOLUME
PWB-A4

VR304-A

VR304
50K(B)

VOLUME

VR304-B

2
1

+B

+B

3
2
1

HEADPHONES
PWB-A3

S501

VOLTAGE SELECTOR

AC 220-240 V

+B

+B

+B

2
1

CON601

T501

POWER

TRANSFORMER

BATTERIES
DC 15 V [ "D" SIZE
(UM/SUM-1, R20 or

2

HP-2)BATTERY x 8 ]

1

BATTERY

CN601

PWB-A6

0V

AC 110-127 V

AC 110-127 V/

220-240 V,

50/60 Hz

SO501

AC INPUT

SOCKET

BATTERIES
DC 15 V [ "D" SIZE
(UM/SUM-1, R20 or
HP-2)BATTERY x 2 ]

AC 110-127 V/
220-240 V,

1

LD501

523HD

+3dB

LD508

Q301

2SC945

R316

120

SPEAKERS
16 OHMS

AC POWER

SUPPLY

CORD

50/60 Hz

JK401

HEADPHONES

78 9101112

Figure 11 SCHEMATIC DIAGRAM (2/2)

– 11 –

QT-90W

A

B

C

D

E

F

G

H

L109

MW BAR ANTENNA

ROD
ANTENNA(228)

M601

TAPE MOTOR

(241-5)

BK

RD

OR
BL

SW601

TAPE MAIN

(241-6)

GY

ERASE HEAD

(241-4)

RECORD/PLAYBACK

HEAD(241-3)

WH

GY

RD

TAPE

BK

BK

C108

Q303

R313

C310

5

VC3

VC4

Q304
B

B

R352
R341

C347

R308

R309

R307

C302

C

C

R306

C304

R244
R245

FM
MW
SW1

SW2

C143

CT103

E

E

R302

S101
BAND
SELECTOR

T102

TC3

TC4

C344

C343

Q305

C339

R343

C308

C306

CON202

STAND-BY

MAIN PWB-A1

GRAPHIC
EQUALIZER PWB-B

TP6

TP1

R335
C331

C334
R334
C336
R340

R109

C115

CON301

1

2
3

R320

R321

4
5

6
7

C317

C346

C345

B

C340

R353

C348

C

B

R342

R350

R351

5
4
3
2
1

CON501

R317

C316

E

Q306

CN304

TAPE
FM(ST)
FM(MONO)
LINE

ON

C
E

C342

C307

C305

R304

C309

R416

1
2
3

A
B

BEAT

CANCEL

R344

R339

R329

R337

C332

Q301

C335

R107

R106

B

C
E

R336

GRAPHIC

EQUALIZER

10KHz

R355

C117

C116

R330

R325
C330

R338

C329

R328

VR101

FINE

TUNING

R305
R316

VR302

1KHz

R333

C327

R332

R331

C328

R354

MIN

CN301

VD101

X-BASS

VR301VR303
MAX

C333

R323

R324

R326

7

R108

7

VOLUME PWB-A4

VR304

1

VR304-A

7

VR304-B

S301

FUNCTION/

BEAT CANCEL

VOLUME

1
2
3
4
5
6
7

R327

1

654321

CT102

C113

R112

D104

C140

C104

R122

C101

C315

2
1

CON401

3
2
1

CON601

D601

D603

F601

S101

AD

B

E

F

C

T101

R102

C109

C102

L102

R349

R301

C301

R310

S301

D

A

E

B

CF

2
1

CT104

C106

C303

R312

R311

T105

C114

S101

C103
C139

L103

TC1

TC2

BP101

R315

R314
R318

R319

1 3 4

IC301

8

S301

R361

2

7 6

C118

CT101

BAND SELECTOR

C107

VC1

VC2

123

R303

C311

FUNCTION/

BEAT CANCEL

R243

R242

C318

C319

C320

D302

R362
R363
D303

D301

T104T103

C119

C120

C142

T106

TP3

IC102

CF102

C110

R216

D201

246810

1

3579

C204

R251

R211

B

C312

C313

R358

R428

R420

Q401

R422

B

C417

R406

R423

C423

C412

C602

D602
D604

3
2
1

R206

R202

B
C
E

C

C401

R413

C422

51012

R214

C208

A

Q402

E
R401

C410

C213

R208

C206

C617

F601

R121

C138

C123

R103

R254

CON304

R402

C604

C112

R110

C111

24201513

1

C122

C403

C404

R105

R217

R210

REC.

C130

CF101
3

2

T108

TP2

PLAY
BACK

C421

C409

C411

R124

R111

R117

1

T107

C141

D103

9
8
7
6

IC101

5
4
3
2
1

C209
R247

R359

C314

1234567

R404

R610

C616

C603

R101

CON402

C601

T2.5A L 250V

C121

C137

C136

VCO

R120

VR102

C135

C131

C133

R119

TP4

R118

R115

C214

12

11

R205

C261

C207

R209
R213

R201

D

123

CON201

R421

B
C
E

Q602

1
2
3
4
5
6
7
8

IC401IC402

9
10
11
12

1

2

3

4

5

6

7

8

9
10

C427

11
12

R113

R603

C402
R427

R424

C428

R246

C260

C

4

C405

C406

C426

C127

C259

C202

C211

C407

R425

C132

C124

R123

C258

R204

C416

R405

R403

C408

C429

C424

C

C224

R255

TP5

C215

E

R222

C225

C220

R613

C606

C223

C237

R233

R226

C

Q201

R221

R248
R249

R256

B

C217

E

Q603

C134

C126
C125

E
C
B

B
C
E

C210

R253

R203

R611

ZD601

C129

R228

C
B
E

R601

Q207

Q209

R207

R212

C614

C612

R215

C203

C205

FGHI

C128

R116

R114

C212

R612

R104

C257

R218

IC201

R252

C201

E

C613

C618

Q601

E
C
B

CON203

12345

(233)

Q205

B

R235

(239)

R257

R258

R227

C221

C231

T201

S201

RECORD/

PLAYBACK

E

C

B

Q604

ZD602

CN602

BK

1

RD

2

OR

3

BL

4

CN201

BK

1

WH

2

BK

3

RD

4

GND

C605

1432

CON602

1

2

34 5

6

Figure 12 WIRING OF P.W.BOARD (1/2)

– 12 –

QT-90W

BUILT-IN

MICROPHONE

MIC

BK

WH

CN203

GRAPHIC

EQUALIZER

10KHz

AAA

X-BASS

VR301VR303 VR302

1KHz

MAX

BBB

MIN

GRAPHIC
EQUALIZER PWB-B

JACK PWB-A2

CN201A

CON201A

BK

1

WH

2

1
2
3
4
5

CN202

WH

3

PK

2

WH

1

C233

1
2

1

5

R234

C227

3

1

R240

JK202

JK202
MIXING
MICROPHONE

L-CH

JK201

LINE INPUT

R-CH

AC POWER

SUPPLY CORD

AC 110-127 V/
AC 220-240 V,

50/60 Hz

CN402B

CN402A

SP502

L-CH

BK

RD

SP501

SURROUND

L-CH

BK

RD

RD

2

RD

1

BK

2

BK

1

BK

RD

BK

BK

RD

BK

RD

SP503

R-CH

SP504

SURROUND

R-CH

SPEAKERS

L-CH

SPEAKERS

R-CH

SURROUND PWB-A5

Q501

B
C
E

1
2

R504

3
4
5

R505

6
7

CN501

1
2

3
4
5

1

5

LD507

8
9

IC501

OFF

ON

X-BASS

HEADPHONES PWB-A3

CN402

2

CN401

3
2
1

1

3

1

SW501

A

R408

R407

B

LD501

LD502

LD503
LD504

LD505

JK401

C501

R506

LD508

R507

R502

C502

D501

R501

R503

JK401
HEADPHONES

CN601

SO501

AC INPUT

SOCKET

AC 110-127 V/
AC 220-240 V,

50/60 Hz

RD

RD

RD

RD

2

BK

1

AC 220 V-240 V AC 110 V-127 V

BK

RD

RD

BL

WH

T501

POWER

TRANSFORMER

BATTERY PWB-A6

(245)

S501

VOLTAGE SELECTOR

BL

BK

WH

RD

RD

BATTERIES
DC 15 V [ "D" size
(UM/SUM-1,R20 or HP2)
battery x 8 ]

BATTERIES
DC 15 V [ "D" size
(UM/SUM-1,R20 or HP2)
battery x 2 ]

(230)

(231)

WH(W)

(244)

COLOR TABLE

BROWN

BR

RED

RD(R)

ORANGE

OR

YELLOW

YL

GREEN

GR

BLUE

BL

VIOLET

VL

GRAY

GY

WHITE
BLACK

BK

PINK

PK

78 9101112

Figure 13 WIRING OF P.W.BOARD (2/2)

– 13 –

QT-90W

BLOCK DIAGRAM OF IC

IC102: LA1805

RF AMP

22

RNG.

23

VRE1

RF

1 2

3

IC501: LB1403N

1

MIX

OSC

5

FM IF

LEVEL DET

AM IF

GND

6

3

24

IC101: LA1186N

MIX

4

5

REG

6

2

AGC

BUTTER

7

4

DET

20

DCT

12

OSC

8

17

POST
AMP.

MUTING

TUNING
INDIC.
DRIVE

8

9

amp

19

16

FM

AM

11

18

OUT 1

13

PHASE DET

NF 1

IN 1

GND

IN 2

NF 2

15 14

PILOT DET

DECODER

10

9

1

3

5

7

9

11

TNG.

VCO

FF

STEREO
SW

IC201: BA3313L

150K

150K

7

STEREO
INDIC.
DRIVE

ALC

21

Vcc

Vcc

FF

FF

2

4

6

8

10

12

ALC

N.C.

GND
(SUB)

VCC

FILTER

OUT 2

1

Vc1

2

Vc2

IC301: BA4558

Pre a.

Gnd

INPUT1

7

Small ripple
filter

6

DC 1

INPUT2

Vcc

12

1

DC2

9

8

Vcc

In

IC401/IC402: BA5415A

µ - COM

ST. RY

about
90µA
(at 5V)

6

1

0.1µ

0.1µ

VCC

1000µ

3

47µ

2

1000µ

RL

1000µ

11

47µ

33K

47µ

47µ

1K

270

100µ

33

5
4

7

44K
44K

9
8

10

12

GND

3

Vc3

4

Vc4

NF1

Power a. Gnd

9

8

5

GND

6

Vc5

BS1

10

7

Amp. Out

OUTPUT1

11

Fin

52

20K

OUTPUT
AMP 1

OUTPUT
AMP 2

62

INPUT
AMP 1

INPUT
AMP 2

20K

Fin

Power a. Gnd

45

NF2

BS2

3

OUTPUT2

2

– 14 –

PARTS GUIDE

STEREO RADIO CASSETTE RECORDER

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

MARK: SPARE PARTS-DELIVERY SECTION

MODEL

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

QT-90W

Explanation of capacitors/resistors parts codes

Capacitors

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%.)

If there are no indications for the electrolytic capacitors, error is ±20%.

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.

Resistors

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 other parts, the resistors are ±5%
carbon-film type.

QT-90W

NO.

PARTS CODE

PRICE

RANK

DESCRIPTION

INTEGRATED CIRCUITS

IC101 VHILA1186N/-1 J AE FM Front End,LA1186N
IC102 VHILA1805//-1 J AM FM IF Det./MW/SW Mixer,

IC201 92L2301-461001 J Playback/Record Pre Amp.&
IC301 92L2301-145001 J Surround Effect Control,BA4558

IC401,402 92L2301-455001 J Power Amp.,BA5415A
IC501 VHILB1403N/-1 J AG Level Meter & Surround

LA1805
Control,BA3313L

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 A A 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
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

VR304 92L1701-049001 J 50 kohms (B)×2 [Volume]

[Fine Tuning]

[Graphic Equalizer]

VARIABLE CAPACITORS

CT101~104 92L1341-007001 J Trimmer,10 pF
VC1~4 92L1340-003001 J Variable Capacitor with Trimmer

(TC1~4)

NO. PARTS CODE

PRICE
RANK

DESCRIPTION

CAPACITORS

C101 VCKYPA1HB102K J AA 0.001 µF,50V
C102 VCCSPA1HL102J J AA 0.001 µF,50V
C103 VCEAZA1CW106M J AC 10 µF,16V,Electrolytic
C104 VCCSPA1HL102J J AA 0.001 µF,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 µF,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 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
C125,126 VCQYKA1HM153K J AB 0.015 µF,50V,Mylar
C127~129 VCEAZA1HW105M J AB 1 µF,50V,Electrolytic
C130 VCKYPA1HF203Z J 0.02 µF,50V
C131 VCTYPA1HB152K J 1500 pF,50V
C132,133 VCEAZA1HW335M J AB 3.3 µF,50V,Electrolytic
C134 VCCSPA1HL471K J AA 470 pF,50V
C135 VCQYKA1HM822K J AA 0.0082 µF,50V,Mylar
C136 VCQYKA1HM472K J AB 0.0047 µF,50V,Mylar
C137 92L1321-002005 J 0.02 µF,50V
C138 VCEAZA1CW227M J AC 220 µF,16V,Electrolytic
C139 VCKYPA1HF203Z J 0.02 µF,50V
C140 VCKYPA1HF104Z J 0.1 µF,50V
C141 92L1321-001083 J 5 pF (CH),50V
C142 VCEAZA1CW107M J AC 100 µF,16V,Electrolytic
C143 92L1321-001003 J 8 pF (CH),50V
C201,202 VCQYKA1HM152J J AB 0.0015 µF,50V,Mylar
C203,204 VCEAZA1CW106M J AC 10 µF,16V,Electrolytic
C205,206 VCQYKA1HM223K J AB 0.022 µF,50V,Mylar
C207,208 VCEAZA1HW475M J AB 4.7 µF,50V,Electrolytic
C209,210 VCQYKA1HM822K J AA 0.0082 µF,50V,Mylar
C211,212 VCQYKA1HM222K J AA 0.0022 µF,50V,Mylar
C213 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C214 VCEAZA1CW227M J AC 220 µF,16V,Electrolytic
C215 VCTYPA1HB103K J 0.01 µF,50V
C217 VCCCPA1HH470J J AA 47 pF (CH),50V
C220 VCQYKA1HM682K J AA 0.0068 µF,50V,Mylar
C221 VCQYKA1HM223K J AB 0.022 µF,50V,Mylar
C223,224 VCEAZA1HW105M J AB 1 µF,50V,Electrolytic
C225 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C227 VCEAZA1CW106M J AC 10 µF,16V,Electrolytic
C231 VCQYKA1HM183K J AB 0.018 µF,50V,Mylar
C233 VCEAZA1HW474M J AB 0.47 µF,50V,Electrolytic
C237 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C257 VCEAZA1CW106M J AC 10 µF,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 1 µF,50V,Electrolytic
C303,304 VCQYKA1HM103K J AA 0.01 µF,50V,Mylar
C305,306 VCQYKA1HM332K J AA 0.0033 µF,50V,Mylar
C307,308 VCEAZA1HW475M J AB 4.7 µF,50V,Electrolytic
C309 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C310 VCEAZA1CW107M J AC 100 µF,16V,Electrolytic
C311 VCEAZA1CW227M J AC 220 µF,16V,Electrolytic
C312 VCQYKA1HM102K J AA 0.001 µF,50V,Mylar
C313,314 VCQYKA1HM154K J AB 0.15 µF,50V,Mylar
C315 VCQYKA1HM102K J AA 0.001 µF,50V,Mylar
C316 VCQYKA1HM473K J AB 0.047 µF,50V,Mylar
C317 VCEAZA1HW475M J AB 4.7 µF,50V,Electrolytic
C318~320 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C327,328 92L1323-015003 J 0.01 µF,50V
C329,330 92L1323-015011 J 0.0027 µF,50V
C331,332 92L1323-014017 J 560 pF,50V
C333,334 92L1323-015008 J 0.0068 µF,50V
C335,336 92L1323-015014 J 0.0015µF,50V
C339,340 VCEAZA1HW105M J AB 1 µF,50V,Electrolytic
C342 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C343,344 VCEAZA1HW105M J AB 1 µF,50V,Electrolytic

– 1 –

QT-90W

NO. PARTS CODE

C345,346 VCQYKA1HM223K J AB 0.022 µF,50V,Mylar
C347,348 VCTYPA1HB331K J 330 pF,50V
C401,402 VCEAZA1HW475M J AB 4.7 µF,50V,Electrolytic
C403,404 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C405,406 VCKYPA1HF104Z J 0.1 µF,50V
C407,408 VCEAZA1EW476M J AB 47 µF,25V,Electrolytic
C409~412 92L1301A002004 J 1000 µF,16V,Electrolytic
C416 VCEAZA1CW106M J AC 10 µF,16V,Electrolytic
C417 VCEAZA1EW107M J AB 100 µF,25V,Electrolytic
C421 VCEAZA1HW475M J AB 4.7 µF,50V,Electrolytic
C422,423 VCEAZA1EW476M J AB 47 µF,25V,Electrolytic
C424 VCEAZA1EW107M J AB 100 µF,25V,Electrolytic
C426,427 VCKYPA1HF104Z J 0.1 µF,50V
C428,429 VCEAZA1EW476M J AB 47 µF,25V,Electrolytic
C501,502 VCEAZA1CW106M J AC 10 µF,16V,Electrolytic
C601~604 92L1321-002005 J 0.02 µF,50V
C605 VCEAZA1EW227M J AC 220 µF,25V,Electrolytic
C606 VCEAZA1CW107M J AC 100 µF,16V,Electrolytic
C612,613 VCEAZA1CW107M J AC 100 µF,16V,Electrolytic
C614 VCKYPA1HF104Z J 0.1 µF,50V
C616 92L1301A002006 J 3300 µF,25V,Electrolytic
C617,618 VCKYPA1HF104Z J 0.1 µF,50V

PRICE
RANK

DESCRIPTION

RESISTORS

R101 VRD-ST2CD470J J AA 47 ohms,1/6W
R102 VRD-ST2CD330J J AA 33 ohms,1/6W
R103 VRD-ST2CD224J J AA 220 kohms,1/6W
R104 VRD-ST2CD824J J AA 820 kohms,1/6W
R105 VRD-ST2CD101J J AA 100 ohm,1/6W
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-ST2CD222J J AA 2.2 kohms,1/6W
R115 VRD-ST2CD103J J AA 10 kohm,1/6W
R116 VRD-ST2CD222J J AA 2.2 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-ST2CD390J J AA 39 ohms,1/6W
R205,206 VRD-ST2CD224J J AA 220 kohms,1/6W
R207,208 VRD-ST2CD682J J AA 6.8 kohms,1/6W
R209,210 VRD-ST2CD152J J AA 1.5 kohms,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-ST2CD473J J AA 47 kohms,1/6W
R217,218 VRD-ST2CD154J J AA 150 kohms,1/6W
R221 VRD-ST2CD331J J AA 330 ohms,1/6W
R222 VRD-ST2CD223J J AA 22 kohms,1/6W
R226 VRD-ST2CD472J J AA 4.7 kohms,1/6W
R227 VRD-ST2CD223J J AA 22 kohms,1/6W
R228 VRD-ST2CD100J J AA 10 ohm,1/6W
R233 VRD-ST2CD223J J AA 22 kohms,1/6W
R234 VRD-ST2CD472J J AA 4.7 kohms,1/6W
R235 VRD-ST2CD684J J AA 680 kohms,1/6W
R240 VRD-ST2CD102J J AA 1 kohm,1/6W
R242 VRD-ST2CD273J J AA 27 kohms,1/6W
R243 VRD-ST2CD222J J AA 2.2 kohms,1/6W
R244 VRD-ST2CD273J J AA 27 kohms,1/6W
R245 VRD-ST2CD222J J AA 2.2 kohms,1/6W
R246,247 VRD-ST2CD223J J AA 22 kohms,1/6W
R248 VRD-ST2CD103J J AA 10 kohm,1/6W
R249 VRD-ST2CD121J J AA 120 ohms,1/6W
R251,252 VRD-ST2CD183J J AA 18 kohms,1/6W
R253,254 VRD-ST2CD124J J AA 120 kohms,1/6W
R255,256 VRD-ST2CD103J J AA 10 kohm,1/6W
R257,258 VRD-ST2CD473J J AA 47 kohms,1/6W
R301,302 VRD-ST2CD104J J AA 100 kohm,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

NO.

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 AA 6.8 kohms,1/6W
R323,324 VRD-ST2CD393J J AA 39 kohms,1/6W
R325,326 VRD-ST2CD683J J AA 68 kohms,1/6W
R327,328 VRD-ST2CD223J J AA 22 kohms,1/6W
R329~332 VRD-ST2CD123J J AA 12 kohms,1/6W
R333~338 VRD-ST2CD822J J AA 8.2 kohms,1/6W
R339,340 VRD-ST2CD272J J AA 2.7 kohms,1/6W
R341,342 VRD-ST2CD684J J AA 680 kohms,1/6W
R343,344 VRD-ST2CD272J J AA 2.7 kohms,1/6W
R349 VRD-ST2CD561J J AA 560 ohms,1/6W
R350,351 VRD-ST2CD103J J AA 10 kohm,1/6W
R352,353 VRD-ST2CD122J J AA 1.2 kohms,1/6W
R354,355 VRD-ST2CD183J J AA 18 kohms,1/6W
R358,359 VRD-ST2CD562J J AA 5.6 kohms,1/6W
R361~363 VRD-ST2CD103J J AA 10 kohm,1/6W
R401,402 VRD-ST2CD102J J AA 1 kohm,1/6W
R403 VRD-ST2CD333J J AA 33 kohms,1/6W
R404 VRD-ST2CD102J J AA 1 kohm,1/6W
R405 VRD-ST2CD151J J AA 150 ohms,1/6W
R406 VRD-ST2CD330J J AA 33 ohms,1/6W
R407,408 VRD-ST2EE151J J AA 150 ohms,1/4W
R413 VRD-ST2CD333J J AA 33 kohms,1/6W
R416 VRD-ST2CD331J J AA 330 ohms,1/6W
R420 VRD-ST2CD222J J AA 2.2 kohms,1/6W
R421 VRD-ST2CD473J J AA 47 kohms,1/6W
R422 VRD-ST2CD222J J AA 2.2 kohms,1/6W
R423 VRD-ST2CD102J J AA 1 kohm,1/6W
R424 VRD-ST2CD330J J AA 33 ohms,1/6W
R425 VRD-ST2CD151J J AA 150 ohms,1/6W
R427,428 VRD-ST2CD333J J AA 33 kohms,1/6W
R501 VRD-ST2CD103J J AA 10 kohm,1/6W
R502,503 VRD-ST2CD121J J AA 120 ohms,1/6W
R504 VRD-ST2CD102J J AA 1 kohm,1/6W
R505 VRD-ST2CD103J J AA 10 kohm,1/6W
R506 VRD-ST2CD471J J AA 470 ohms,1/6W
R507 VRD-ST2CD103J J AA 10 kohm,1/6W
R601 VRD-ST2CD561J J AA 560 ohms,1/6W
R603 VRD-ST2CD223J J AA 22 kohms,1/6W
R610,611 VRD-ST2CD102J J AA 1 kohm,1/6W

1 R612 92L1509-006008 J 2.2 ohms,1/4W,Fusible

R613 VRD-ST2CD561J J AA 560 ohms,1/6W

PRICE

RANK

DESCRIPTIONPARTS CODE

OTHER CIRCUITRY PARTS

CN201 92L3421-773001 J Connector Ass’y,4Pin
CN201A 92L3421-775001 J Connector Ass’y,2Pin
CN202 92L3421-813001 J Connector Ass’y,3Pin
CN203 92L3421-822001 J Connector Ass’y,5Pin
CN301 92L3421-788001 J Connector Ass’y,7Pin
CN304 92L3421-780001 J Connector Ass’y,7Pin
CN401 92L3421-803001 J Connector Ass’y,3Pin
CN402 92L3421-581001 J Plug,2Pin
CN402A 92L3421-580001 J Connector Ass’y,2Pin
CN402B 92L3421-580001 J Connector Ass’y,2Pin
CN501 92L3421-801001 J Connector Ass’y,5Pin
CN601 92L3421-782001 J Connector Ass’y,2Pin
CN602 92L3421-774001 J Connector Ass’y,4Pin
CON201 92L3101-171009 J Plug,4Pin
CON201A 92L3101-054001 J Plug,2Pin
CON202 92L3101-171010 J Plug,3Pin
CON203 92L3101-171008 J Plug,5Pin
CON301 92L3101-173006 J Plug,7Pin
CON304 92L3101-171006 J Plug,7Pin
CON401 92L3101-094002 J Plug,3Pin
CON402 92L3101-174001 J Plug,2Pin
CON501 92L3101-171008 J Plug,5Pin
CON601 92L3101-094001 J Plug,2Pin
CON602 92L3101-094003 J Plug,4Pin

1 F601 92L5301-022001 J Fuse,T2.5A L 250V

JK201 92L3201-073001 J Jack,Line Input
JK202 92L3202-024001 J Jack,Mixing Microphones
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

S201 92L4104-013001 J Switch,Push Type

[Band Selector]
[Record/Playback]

– 2 –

QT-90W

NO.

S301 92L4103-022001 J Switch,Slide Type

1 S501 92L4106-011001 J Switch,Slide Type
1 SO501 92L3204-016001 J AC Input Socket

SP501~504 92L4801-085001 J Speaker
SW501 92L4104-002001 J Switch,Push Type [Surround]
SW601(241-6) 92L4110-007001 J Switch,Leaf Type [Tape Main]

PARTS CODE

PRICE

RANK

DESCRIPTION

[Function/Beat Cancel]
[Voltage Selector]

CABINET PARTS

201 92L799QT900101 J Front Cabinet Ass’y
202 92L202QT900101 J Rear Cabinet
203 92L799QT900301 J Top Panel Ass’y
203- 1 92L201QT900101 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 92L211QT800102 J Cover,Cassette Holder
207 92L220QT800101 J Bracket,Tape Mechanism/

208 92L226QT800101 J Bracket,Tuning Knob
209 92L227QT800101 J Bracket,Cassette Holder Cover
210 92L248QT800101 J Handle
211 92L25133010101 J Holder,Bar Antenna
212 92L260QT800101 J Lens,Dial Tuning
213 92L270QT800101 J Knob,Tuning
214 92L270QT800201 J Knob,Fine Tuning
215 92L272QT800102 J Button,Record
216 92L272QT800202 J Button,Play
217 92L272QT800302 J Button,Rewind
218 92L272QT800402 J Button,Fast Forward
219 92L272QT800502 J Button,Stop/Eject
220 92L272QT800602 J Button,Pause
221 92L273QT800101 J Knob,Volume
222 92L273QT800201 J Button,Surround
223 92L278QT800101 J Knob,Band Selector
224 92L278QT800101 J Knob,Function
225 92L289QT800102 J Ring,Volume Knob
226 92L290QT800101 J Gear,Dial
227 92L430QT900101 J Heat Sink
228 92L43330616501 J Rod Antenna
229 92L471QT800101 J Spring,Cassette Holder
230 92L47423010101 J Spring,Battery,­231 92L47470120101 J Spring,Battery,+
232 92L476QT800101 J Spring,Record
233 92L489QT800101 J Bracket,Rod Antenna
234 92L579QT900103 J Label,Specifications
235 92L250QT800101 J Bracket,LED
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]
243 92L430QT900101 J Bracket,Heat Sink
244 92L474QT900101 J Spring,Battery,+
245 92L474QT900201 J Spring,Battery,­601 92L60026450800 J Screw,ø2.6×8mm
602 92L60030500610 J Screw,ø3×6mm
603 92L60220500410 J Screw,ø2×4mm
604 92L60620400410 J Screw,ø2×4mm
605 92L61030010810 J Screw,ø3×8mm
606 92L61030011010 J Screw,ø3×10mm
607 92L61030011210 J Screw,ø3×12mm
608 92L61030023010 J Screw,ø3×30mm
609 92L61126010800 J Screw,ø2.6×8mm
610 92L61130011210 J Screw,ø3×12mm
611 92L61226010810 J Screw,ø2.6×8mm
612 92L61230010810 J Screw,ø3×8mm
613 92L61430011010 J Screw,ø3×10mm
614 92L61530041010 J Screw,ø3×10mm
615 92L61540021410 J Screw,ø4×14mm

Main PWB

NO. PARTS CODE

616 92L61540041410 J Screw,ø4×14mm
617 92L62030011010 J Screw,ø3×10mm
618 92L66090752012 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

PRICE
RANK

DESCRIPTION

ACCESSORIES/PACKING PARTS

1 QACCA0004AW00 J AK AC Power Supply Cord
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 Plug

92L300QT800102 J Packing Add.,Left/Right
92L31020300401 J Polyethylene Bag,Accessories
92L31074500401 J Polyethylene Bag,Unit
92L510QT900101 J Packing Case
92L563184- J Label,Serial No.
92L579QT800201 J Label,Feature
92L580QT900104 J Operation Manual
92L593QT900101 J Schematic Diagram

P.W.B. ASSEMBLY (Not Replacement Item)

PWB-A1~6 92L770QT900101 J — Main/Jack/Headphones/Volume/

PWB-B 92L771QT900102 J — Graphic Equalizer

Surround/Battery
(Combined Ass’y)

– 3 –

QT-90W

235

206

210

205

228

231

602

608x3

608x3

607

607

607

607

610x2

234

245

244

202

SO501

S501

T501

605x2

605x2

620

230

233

612

239

616x2

615x2

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

FF/REW Belt

Main Belt

BELT CONNECTION

PWB-A3

PWB-A6

PWB-A2

237

606

617x2

IC402

IC401

243x2

606

A

B

C

D

E

F

G

H

Note: Only the unit and consumale parts are supplied as parts supply for the Tape mechanism.

1

23456

Figure 4 CABINET EXPLODED VIEW

– 4 –

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