Sharp QT-90W User manual

QT-90W
– 1 –
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
• In the interests of user-safety the set should be restored to its
originalconditionandonlypartsidenticaltothosespecifiedshould
be used.
SERVICEMANUAL
SHARP CORPORATION
No. S6143QT90W///
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
QT-90W
STEREO RADIO CASSETTE RECORDER
MODEL
SPECIFICATIONS
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
General
Power source
Power consumption
Output power
Speakers
Output terminal
Input terminal
Dimensions
Weight
FM: 88 - 108 MHz
SW1: 2.3 - 7.3 MHz
SW2: 7.3 - 22 MHz
MW: 526.5 - 1,606.5 kHz
Radio
Frequency range
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)
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QT-90W
– 2 –
NAMES OF PARTS
HOW TO SET THE POINT "0" ON TUNER DIAL MEMORY
Figure 2
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.Whenthetuningknobissetat2,adjustitfromabovesothat
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.
12345678910
11 12 13 1415 16 17
18 19
22 23
2120
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
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
QACCA0004AW00 QACCB0012AW00
QACCE0007AW00 QPLGA0004AWZZ
QPLGA0003AWZZ
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
QACCL0002AW00/QACCL0008AW00
Mark “ ”
Tuning Knob
Tuning Knob
“0” Point of Tuning Display
Tuning Knob “0” Point Rib
Tuning Knob
“ 0 ” Point Rib
Top Side
Main PWB
Dial Drum
Gear Dial
Main PWB
Front Side
Mark “ ”
Dial Drum “0” Point Rib
Dial Drum
Tuning Knob
Bracket
Dial Drum “0”
Point Rib
Front Side
2
3
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QT-90W
– 3 –
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
DISASSEMBLY
STEP REMOVAL PROCEDURE FIGURE
Figure 3-3
Figure 3-1
Figure 3-2
Caution on Disassembly
Followthe below-mentioned noteswhen disassembling the
unitandreassemblingit,tokeepitsafeandensureexcellent
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
beremovedwhen disassemblingtheunit. Afterservicing
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 attach the tuning display label
(See Fig. 3-4.)
(B1)x1
(A1)x1
(B2)x1
Front Cabinet
Rear Cabinet
Volume
PWB
(A3)x4
ø3x12mm
(A2)x6
ø3x30mm
(H2)x4
ø3x10mm
(H1)x2
(H3)x2
Tape
Mechanism
Main PWB
(G1)x2
ø3x12mm (G2)x1
ø3x8mm
(E2)x1
(F1)x1
(E1)x1
(F1)x1
(B3)x1
(C1)x1
(B3)x1(B3)x1
(D1)x1
(C1)x1
(B3)x1
Jack PWB
Main PWB
Battery
PWB
Headphones
PWB Tape Mechanism
Rear Cabinet
Lug Wire
Handle
(F2)x1
ø4x14mm
(C2)x2
ø4x14mm
5
6
7
8
9
10
4
3
2
1
0
100
104
108
96
92
88
600
540
700
800
1000
1200
1400
1600
2.3
3.2
2.6
4.0
5.0
6.0
7.3
7.3
8.5
10.0
12.0
15.0
19.0
22.0
Reference
1. Start Stick Label Matching
With Base Line
2. This Line Must Be
Stick Matching
Base Line Dial Drum
Tuning Display Label
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QT-90W
– 4 –
Figure 4-2
Figure 4-1
TAPE MECHANISM SECTION
Performsteps1to9ofthedisassemblymethodtoremovethe
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 thecenter 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.
How to remove the pinch roller (See Fig. 4-4.)
1.Remove the screw(B1) x1 pc., andremove thepinch 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)x3
ø2.6x8mm
(L1)x2
ø2.6x8mm
Front Cabinet
Surround PWB
Graphic Equalizer
PWB
(A1)x2
ø2x7mm
Record/Playback
Head
Hook
(A2)x2
Erase Head
PLAY
Button
Push
Lug Wire
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QT-90W
– 5 –
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:
Whenputting onthe 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.
Figure 5-1
Figure 5-2
How to remove the flywheel (See Fig. 5-3.)
1. Remove the belt. (See Fig. 5-1.)
2.Removethestopwasher(E1)x1pc.,withasmallprecision
screwdrivertoextracttheflywheelfromthecapstan metal.
Note:
When the stop washer is deformed or damaged, replace it
with a new one.
How to reinstall the parts
Installeach part in the reverseorder ofthe removal with care.
Motor
REW/FF
Roller
Flywheel
FF/REW Belt
(C2)x1
Main Belt
(C1)x1
Motor Pulley
(E1)x 1
Stop Washer
Washer
Flywheel
Washer
Driver
Motor Bracket
Motor
Motor
(D2)x2
ø2.6x1.6mm
Special Screw
(D1)x1
ø2x4mm
(D1)x1
ø2x4mm
Motor Bracket
Figure 5-3
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QT-90W
– 6 –
ADJUSTMENT
Figure 6
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
1 FM IF: (1) FM IF sweep Inject the IF Signal are taken Adjust T106, T108 (1) Band SW in FM.
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
2 FM BAND (1) FM RF sweep Inject the RF Same as step 1 Adjust P.V.C. (TC1) Same as step 1
COVERAGE fH: generator signal directly to get MAX. output
108.2 MHz (2) Alignment point TP1
oscilloscope
(3) Power supply
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
COVERAGE fL: MAX. output 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.
Step Alignment
Frequency Test Equipment Signal-in Signal-out Adjust Remark
FM Section
1 VCO: 75 kHz (1) Frequency counter Inject MONO Through test Adjust VR102 let (1) FM and stereo
(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
Step Alignment
Frequency Test Equipment Signal-in Signal-out Adjust Remark
FM Stereo Section
Pin 13 of IC102 Pin 21 of IC102
FET: 2SK212
(or other 2SK type FET.)
To frequency
counter
10 pF
1M ohm
10K ohm
D
G
S
0.1 µF
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QT-90W
– 7 –
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
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
2 MW (1) MW sweep Same as step 1 Same as step 1 Adjust P.V.C. (TC3) Same as step 1
TRACKING fH: generator with get MAX. output at
1,650 kHz antenna 1,650 kHz
(2) Alignment
oscilloscope
(3) Power supply
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
COVERAGE fL: MAX. output at 515 kHz end
515 kHz
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
COVERAGE fH: get MAX. output at 1.400 kHz
1,400 kHz 1,400 kHz
6 MW TRACKING Same as step 2 Same as step 1 Same as step 1 Adjust L109 get MAX. Tune P.V.C. to
fL: 600 kHz output at 600 kHz 600 kHz
7 Repeat step 5, 6 and then step 2, 3, 5, 6 until no further improvement can be made.
Step Alignment
Frequency Test Equipment Signal-in Signal-out Adjust Remark
MW Section
1 SW1 BAND (1) SW1 sweep Let the MW ANT Take out the signal Adjust CT102 get MAX. (1) Band SW in SW1
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
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 step 1 Same as step 1 Same as step 1 Adjust T101 get MAX. Tune P.V.C. to
TRACKING fL: output at 2.6 MHz 2.6 MHz
2.6 MHz
6 Repeat step 4, 5 and then step 1, 2, 4, 5 until no further improvement can be made.
Step Alignment
Frequency Test Equipment Signal-in Signal-out Adjust Remark
SW1 Section
1 SW2 BAND (1) SW2 sweep Inject the RF Take out the signal Adjust CT101 get MAX. (1) Band SW in SW2
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.
oscilloscope position
(3) Power supply (3) Tune P.V.C. to
high end
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
COVERAGE fL: output at 7.2 MHz end
7.2 MHz
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
TRACKING fH: output at 19 MHz 19 MHz
19 MHz
5 SW2 Same as step 1 Same as step 1 Same as step 1 Adjust T102 get MAX. Tune P.V.C. to
TRACKING fL: output at 8.5 MHz 8.5 MHz
8.5 MHz
6 Repeat step 4, 5 and then step 1, 2, 4, 5 until no further improvement can be made.
Step Alignment
Frequency Test Equipment Signal-in Signal-out Adjust Remark
SW2 Section
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QT-90W
– 8 –
MECHANISM SECTION
1 Head Playback test tape Connect VTVM and oscilloscope to Head fixing screw Adjust to get MAX.
adjustment MTT-113 6.3 kHz speaker output (see Fig 8-3.) audio output
2 Bias Frequency Record position Connect frequency counter to TP5 and Adjust T201 80 kHz ±1 kHz
adjustment ground (Bias Oscillation)
3 Beat cancel Record position Same as step 3 S201 from playback 75 kHz ±0.5 kHz
to record
Step Item Condition Connection Adjust Output
TAPE Section
Figure 8-1 ADJUSTMENT POINTS
Figure 8-3
Erase Head
Head fixing
screw Record/
Playback
Head
Tape 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
COVERAGE
fL
fH
MW IF
FM IF fL
fH
S201
RECORD/PLAYBACK
MW
TRACKING fL
VCO
1
13 12
24
21
ROD
ANTENNA
TP5
TP1
TP3
TP4
17
18
8
TP6
R227C220 C221
BIAS OSCILLATION
T201
IC201
MAIN PWB
S201
RECORD/PLAYBACK
1
2
3
4
REC PLAY
BACK
ERASE HEAD
RECORD/
PLAYBACK HEAD
TAPE
CN602
M601
TAPE
MOTOR
SW601
TAPE MAIN
CN201
1
2
3
4
CON201
1
2
3
4
4
3
2
1
CON602
TP5
R227C220 C221
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QT-90W
– 9 –
NOTES ON SCHEMATIC DIAGRAM
TYPES OF TRANSISTOR AND LED
•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 eachsection isthe one measured by
Digital Multimeter between such a section and the chassis
with no signal given.
S101 BAND SELECTOR FM—MW—SW1—SW2
S201 RECORD/PLAYBACK REC—P.B.
S301 FUNCTION/ LINE
BEAT CANCEL
S501 VOLTAGE SELECTOR AC 220-240 V—
AC 110-127 V
SW501 SURROUND OFF—ON
SW601 TAPE MAIN OFF—ON
REF. NO DESCRIPTION POSITION
VOLTAGE
ECB
FRONT
VIEW
2SC945
SS8550
EBC
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
Pin No.
Voltage
Q209: 2SC945
Pin No.
Voltage
Q301: 2SC945
Pin No.
Voltage
Q305/Q306: 2SC945
Pin No.
Voltage
Q201: 3DA8050
Pin No.
Voltage
Q601: 3DA8050
Pin No.
Voltage
IC201: BA3313L [REC]
Pin No.
Voltage
1.5V 1.5V 5.5V 2.2V 1.5V 0V 0V 0V 2V 2V 4.8V 0.8V
1 2 3 4 5 6 7 8 9 10 11 12
0.9V 1.5V 5.3V 0V 0V 5.3V 0V 4.7V 5.3V
1 2 3 4 5 6 7 8 9
1.55V 1.55V 6.7V 0.8V 1.55V 0V 0V 0V 2V 2V 6.5V 0.8V
1 2 3 4 5 6 7 8 9 10 11 12
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
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 4 5 6 7 8 9 10 11 12
1 2 3
E: 17V C: 17V B: 0V
1 2 3
E: 0V C: 3.5V B:0.5V
1 2 3
E: 0V C: 0V B: 5V
1 2 3
E: 0V C: 4V B:0.7V
1 2 3
E: 7V B: 6.7V C:7.6V
1 2 3
E: 17V C: 17V B:17V
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
1 2 3
E:7.5V B:17V C:8.2V
0V 1.65V 1.1V 1.2V 1.65V 0.8V 0.55V 6.7V 6.5V 1.6V 1.6V 1.6V
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
13 14 15 16 17 18 19 20 21 22 23 24 Q207: SS8550
Pin No.
Voltage 1 2 3
E: 7.5V C: 7.5V B: 0V
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QT-90W
– 10 –
• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
A
B
C
D
E
F
G
H
1234 5 6
Figure 10 SCHEMATIC DIAGRAM (1/2)
FM
MW
SW1
SW2
FM
MW
SW1
SW2
FM
MW
SW1
SW2
1
2
1
2
3
4
55
1
2
3
4
1
2
3
R
P
R
P
R
P
R
P
R
P
1
2
3
4
1
2
3
4
R
P
LINE
FM(MONO)/BEAT
FM(ST)
TAPE
(STAND-BY)
FM
MW
SW1
SW2
FM
MW
SW1
SW2
R
P
R
P
TAPE(STAND-BY)
FM(ST)
FM(MONO)/BEAT
LINE
LINE
FM(MONO)/
BEAT
FM(ST)
TAPE
(STAND-BY)
SW2
SW1
MW
FM
1
2
3
4
M
ERASE HEAD
RECORD/
PLAYBACK
HEAD
L-CH
R-CH
TAPE
MAIN PWB-A1
ROD
ANTENNA
1
2
3
1
2
3
JACK
PWB-A2
123456789
2345678 9 10 11 12
1
24 13
14
15
16
17181920
21
22
23
12 3 4 56 7 8910 11 12
AM
OSC
STB
AM RF
+VCC
FM DET
AM IN
DET
OUT
IF AD
MPX
IN
MO/ST
VCO
N.C. AM/ FM
R-CH
L-CH
GNDGND
AM IF
AGC
AM MIX
FM IF
OUT1
ALC
NF1
N.C.
IN1 GND GND
VCC IN2
FILTER
NF2
OUT2
IC102
LA1805
S101-C
S101-F
S101-E
S101-A
S101-D
S201-D
S201-A
S201-B
S201-F
S201-I
S201-G
S301-E
S201-H
S101-B
S301-F
S301-B
1
2
3
L-CH
R-CH
FM BAND
COVERAGE
L103
TC1 fL
fH
FM
TRACKING
L102
TC2 fL
fH
MW BAND
COVERAGE
T103
TC4 fL
fH
MW
TRACKING
L100
TC3 fL
fH
SW1 BAND
COVERAGE
CT102
T104 fL
fH
SW1
TRACKING
T101
CT104 fL
fH
SW2 BAND
COVERAGE
T105
CT101 fL
fH
SW2
TRACKING
T102
CT103 fL
fH
PLAY
1
5
1
3
+B
+B
+B +B
S101
BAND
SELECTOR
S201-C
10.7MHz
S201-E
S301
FUNCTION/
BEAT CANCEL
TP3
TP4
TP5
TP2
TP1
GND
R
P
1
2
1
2
3
R205
220K
BIAS
OSCILLATION
MIXING MIC
PRE AMP.
SWITCHING
X-BASS
CONTROL
X-BASS
CONTROL
BP101
BAND PASS
FILTER C101
0.001
C102
0.001
L102
FM RF
C106
18P(CH)
C104
0.001
R122
10 C103
10/16
C143
8P(CH)
CT104
10P
CT103
10P
VD101
1S2638
R106
100K
C116
0.02
C117
0.02 R107
100K
R108
22K
R109
22K
VR101
100K(B)
FINE TUNING
C115
5P(CH)
C111
33P(CH)
C112
5P(CH)
C113
1500P
CT102
10P
C114
0.0047(ML)
CT101
10P
C118
0.1
JK202
MIXING
MICROPHONE
C227
10/16
CN203
CN201A
CON201A
JK201
LINE INPUT
BUILT-IN
MICROPHONE
CN202
R248
10K
CON203
C237
47/16
Q207
SS8550
C223
1/50
C215
0.01
CON202
R242
27K
R244
27K R243
2.2K
R245
2.2K
R212
18K
C212
0.0022(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
Q205
2SC945
C224
1/50
R226
4.7K
R235
680K
R221
330
R222
22K
R112
47
R111
47
C120
10/16
C119
0.02
T105
SW2 OSCILLATION
T104
SW1 OSCILLATION
T102
SW2 ANTENNA
T103
MW OSCILLATION
R124
33K
R110
100
C121
0.02
T101
SW1 ANTENNA
C139
0.02
L109
MW BAR ANTENNA
C138
220/16
R101
47
R102
33
T108
FM IF
D103
1N4148
C137
0.02
C107
15P
(CH)
C140
0.1
IC101
FM FRONT END
LA1186N
C108
20P
(CH) C109
5P(CH)
L103
FM OSC.
R103
220K R104 820K
C110
0.02
C141
5P(CH)
T106
FM DET.
R105
100
R121
3.9K
C142
100/16
CF101
10.7MHz
FM IF
C123
0.02
C124
22/16
CF102
AM IF
T107
MW IF
R233
22K
R217
150K
R218
150K
R214
330
C261
33P(CH)
C260
680P
C257
10/16
R203
39
R247
22K
R249
120
R362
10K
R601
560
Q601
3DA8050
C614
0.1
C612
100/16
ZD601
TZX8V2C
C203
10/16
R207
6.8K
R252
18K
D201
1N4148
C125
0.015(ML)
C126
0.015(ML)
R114
2.2K
R116
2.2K
R113
10K
R115
10K
C127
1/50
C128
1/50
C129
1/50
R117
10
C135
0.0082(ML)
R120
2.7K
C133
3.3/50
C132
3.3/50
C136
0.0047
(ML)
C134
470P
C131
1500P
VR102
10K(B)
VCO
R119
15K
R118
100K
C122
0.1
R123
100
M601
TAPE
MOTOR
SW601
TAPE MAIN
CN602
D301
1N4148
R251
18K
IC102
FM IF DET./
MW/SW MIXER
LA1805
IC201
PLAYBACK/RECORD PRE AMP. & CONTROL
BA3313L
S101
BAND
SELECTOR
S101
BAND
SELECTOR
S101
BAND
SELECTOR
S101
BAND
SELECTOR
S201
RECORD/
PLAYBACK
S301
FUNCTION/
BEAT CANCEL
S201
RECORD/
PLAYBACK
S201
PECORD/
PLAYBACK
S101
BAND
SELECTOR
S301
FUNCTION/
BEAT CANCEL
VC2
TC2
TC1
VC1
TC4
VC4
TC3
VC3
MIC
Q209
2SC945 D302
1N4148
D303
1N4148
C318
47/16
C319
47/16
C320
47/16
R363
10K
R361
10K
C618
0.1
C130
0.02
C233
0.47/50
R234
4.7K
R240
1K
R257
47K
R258
47K
R246
22K
R253
120K
R209
1.5K
C205
0.022(ML)
C214
220/16
R206
220K
R254
120K
R210
1.5K
Q304
2SC945
Q303
2SC945
R320
6.8K
C343
1/50
R314
10K
R315
10K
R321
6.8K
C344
1/50
C613
100/16
D104
1N4148
All manuals and user guides at all-guides.com

QT-90W
– 11 –
Figure 11 SCHEMATIC DIAGRAM (2/2)
78 9101112
TAPE
(STAND-BY)
FM(ST)
FM(MONO)/BEAT
LINE
TAPE
(STAND-BY)
FM(ST)
FM(MONO)/BEAT
LINE
1
2
3
4
+15V DC
1
2
0V
AC 110-127 V/ 220-240 V, 50/60 Hz
AC POWER
SUPPLY
CORD
AC 110-127 V/
220-240 V,
50/60 Hz
3
2
1
3
3
2
1
2
1
RECORD SIGNAL
PLAYBACK SIGNAL
FM SIGNAL MW/SW1/SW2 SIGNAL
SPEAKERS
16 OHMS
BATTERIES
DC 15 V [ "D" SIZE
(UM/SUM-1, R20 or
HP-2)BATTERY x 8 ]
GRAPHIC EQUALIZER
PWB-B
HEADPHONES
PWB-A3
BATTERY
PWB-A6
12
6
5
4
7
9
810
11
2
1
3
S301-C
S301-D
S301-A
IC402
+12V
17
1
+B
+B
+B +B
+B +B
+B
+B
+B
S301
FUNCTION/
BEAT CANCEL
TAPE(STAND-BY)
FM(ST)
FM(MONO)/BEAT
LINE
S301
FUNCTION/
BEAT CANCEL
1
23
4
5
6
78
9
5
5
4
3
2
1
4
3
2
1
5
1
+3dB
0dB
-3dB
-8dB
-13dB
SW501-A
SW501-B
OFF OFF
ON ON
SURROUND
PWB-A5
1
3
7
5
4
2
6
VR304-A
VR304-B
21
12
6
5
4
7
9
810
11
2
1
3
IC401
+B
+B
1
3
7
5
4
2
6
2
1
AC 220-240 V
AC 110-127 V
BATTERIES
DC 15 V [ "D" SIZE
(UM/SUM-1, R20 or
HP-2)BATTERY x 2 ]
1
2
5
67
8
3
21
4
(1/2)
IC301
13754
26
13754
26
+B
L OUT
R OUT
L IN
R IN
L-CH L-CH
R-CH R-CH
(2/2)
IC301
VOLUME
CONTROL
R IN
L IN
MOTOR
CONTROL
REGULATOR
SURROUND
CONTROL
L OUT
R OUT
L IN
R IN
VOLUME
PWB-A4
21
VR301A
100K(B)
VR301B
100K(B)
CON602
Q604
3DA8050
C605
220/25
ZD602
TZX13V-B
R613
560
C606
100/16
C340
1/50
CN301
R343
2.7K
R317
2.2K
R344
2.7K
Q306
2SC945
Q603
SS8550
R612
2.2
Fusible
R611
1K
R610
1K R603
22K
R404
1K
R423
1K
R413
33K
R424
33
R425
150
C423
47/25
C421
4.7/50
C424
100/25
C422
47/25
C429
47/25 C411
1000/16
C426
0.1
C427
0.1
C428
47/25
C412
1000/16
IC401
BA5415A
POWER AMP.
Q602
SS8550
C616
3300/25
C617
0.1
C601
0.02
C602
0.02
C603
0.02
C604
0.02
D601
1N5401
D602
1N5401
D603
1N5401
D604
1N5401
F601
T2.5A L 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
SURROUND
VR304
50K(B)
VOLUME
CN402
CN402A
SP503
R-CH
SP504
SURROUND
R-CH
R420
2.2K
Q401
2SC945
SO501 AC INPUT SOCKET
R421
47K
R427
33K
C402
4.7/50
R358
5.6K
C313
0.15(ML)
R359
5.6K
C314
0.15(ML)
C312
0.001(ML)
C315
0.001(ML)
R342
680K
C348
330P
C347
330P
R341
680K
C339
1/50
Q305
2SC945
C342
47/16
R349
560
C307
4.7/50
R313
2.2K
R350
10K
R310
12K
R308
12K
R306
2.2K
R351
10K
C308
4.7/50 C310
100/16
R307
2.2K R309
12K
C305
0.0033
(ML)
C306
0.0033
(ML)
R312
2.2K
R311
12K
C309
47/16
R416
330
C301
1/50
R303
10K
R301
100K
C303
0.01(ML)
R319
47K
R304
10K
R302
100K
C304
0.01(ML)
C302
1/50
C311
220/16
R318
47K
IC301
SURROUND EFFECT CONTROL
BA4558
C346
0.022(ML) R353
1.2K
R352
1.2K
C345
0.022(ML)
R335
8.2K
R329
12K
R323
39K
C327
0.01
VR303A
100K(B)
R355
18K
C329
0.0027 C331
560P
VR302A
100K(B)
R325
68K
R327
22K R331
12K R333
8.2K R339
2.7K
R337
8.2K
C333
0.0068 C335
0.0015
R336
8.2K
R330
12K
VR303B
100K(B)
R354
18K
C330
0.0027 C332
560P
VR302B
100K(B)
R332
12K R334
8.2K R340
2.7K
R338
8.2K
C334
0.0068 C336
0.0015
R324
39K
C328
0.01 R326
68K
R328
22K
VR301
X-BASS
VR301
X-BASS
VR302,VR303 GRAPHIC EQUALIZER
CON301
CN501
CON501
R305
470K
C316
0.047(ML)
R316
120
Q301
2SC945
C317
4.7/50
CN304
CON304
IC402
BA5415A
POWER AMP.
C416
10/16
R428
33K
R401
1K
R402
1K
C404
47/16
C401
4.7/50
C403
47/16
Q402
2SC945
R422
2.2K
R406
33
C417
100/25
C407
47/25 C409
1000/16
C405
0.1
C406
0.1
C408
47/25
C410
1000/16
R403
33K
R405
150
IC501
LEVEL METER. & SURROUND INDICATER
LB1403N
All manuals and user guides at all-guides.com
all-guides.com

QT-90W
– 12 –
A
B
C
D
E
F
G
H
1234 5 6
Figure 12 WIRING OF P.W.BOARD (1/2)
C215
E
C
B
ECB
ECB
E
C
B
E
C
B
E
C
B
ECB
E
B
C
E
C
B
EBC
EBC
E
C
B
ECB
ECB
E
C
B
T105
1
2
3
4
5
6
7
8
9
1
3579
11 246810
12
C604 D603
D601
D604
D602
C603
C412
C602C617 C601
CON601
1
1
2
1
2
3
2
R361
D301
D303
D302
C320
C319
C318
R363
R362
CON401
C411
C409
C421
C616
C428
C427
R424
C423
C424
C402
R427
R423
C422
R425
C426 C406 R403
R422
C401
C429 C410
CON402
R413 R402
R406
C408
C417
C405
R405 R401
C407
Q402
C404 C403
R610
S301
R404
Q401
R420
R428
C416
R612
R601
C605 Q604
ZD601
Q602
Q601
R603
R358
R421
CON602
1432
C606
ZD602
R613
Q603
R611
C612
C614
C613
C618
CON201 C313
C312
CON304
CON202
3
2
R242
R244
R243
R245
R302
C304
C311
R416
R351
CON501
1
2
3
4
5
C309
C302
C306
C308 C305
R307
R309 R304
R306
R308 R350
R311
C307 C342
R344
R342
IC301
R312
C315
R303
Q306
Q305
R321
R320
Q301
R305
R316
C316
R353
C340
C346
C345
C343
R341
R352
Q303
Q304 C344
R317
C317
R343
R313
C348
R310
C301
R301C303
R349
C310
C314
C347 C339
VD101
R108
CON301
1
2
3
4
5
6
7
R319
R318
R314
R315
BP101
L102
R217
C209
R210
C206
C211R211
R251
C260
C202 R254
R247
R359
C213
C208
R206
C204
D201
C258
R246
C261
C259
R213
R209
R208
R202
R204
C201
R212C212
R252
C207
R228
R201
R203
R253 C205
Q201
T201
C231
TP5
R227
C220
C221
REC.
PLAY
BACK
123
4
C210
R207
C203
R205
C217
R215
R218
C257
C214
R216
R214
C101
Q209
R255
R256
C225
R249
R248
R233
R222
R258
R257
R221
C224
R235
Q205
R226
Q207
R114
R116
C237
C125
C126
C129
C223
12345
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
R107
R109
C143
TP6
C130
C138
C132 C131
TP3
R119
C133
VR102 C135
R120 T106
R121
R105
R111
R112
S101
C114
CT101
C118
C113
R124
CT102
T104T103
C112
C111
R110
C142
C137
C136
C121
C120
C119
IC102
24201513
1
51012
IC101
VR101
FINE
TUNING
IC201
S201
RECORD/
PLAYBACK
IC401IC402
VR304
VOLUME
F601
(233)
L109
MW BAR ANTENNA
AD
E
F
B
C
FM
MW
SW1
SW2
S101
BAND
SELECTOR
VR304-A
VR304-B
VOLUME PWB-A4
7
1
2
3
4
5
6
7
CN304
1
TP1
TP2
MAIN PWB-A1
ROD
ANTENNA(228)
(239)
GY
CN201
BK
WH
RD
BK 1
2
3
4
ERASE HEAD
(241-4)
TAPE
CN602
BL
BL OR
RD
BK 1
2
3
4
M601
TAPE MOTOR
(241-5)
RD
BK
OR
SW601
TAPE MAIN
(241-6)
1234567
1
2
3
4
5
6
7
8
9
A
B
D
E
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
STAND-BY
A
B
FM(ST)
TAPE
LINE
FM(MONO)
S301
FUNCTION/
BEAT CANCEL
CF
ON
BEAT
CANCEL
BK
RD
WH
RECORD/PLAYBACK
HEAD(241-3)
BK
GY
GND
VCO
A
B
C
D
E
FGHI
1
2
3
1
2
3
2
1 3 4
87 6 5
F601
T2.5A L 250V
1
S101
BAND SELECTOR
GRAPHIC
EQUALIZER PWB-B
S301
FUNCTION/
BEAT CANCEL
VR301VR303
R339
R336 R325
C330
R328
R332
R323
R335
C331
C334
R334
C336
R340
C332
R337
R329
C335
R355
C329
R338
R331
R330
C327
C328
R354
R326 R324
R333
C333
R327
VR302 X-BASS
GRAPHIC
EQUALIZER
7
71
654321
CN301
MAX
MIN
10KHz 1KHz
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QT-90W
– 13 –
Figure 13 WIRING OF P.W.BOARD (2/2)
78 9101112
SP502
L-CH
SP501
SURROUND
L-CH
BK
RD
RD
SP503
R-CH
SP504
SURROUND
R-CH
BK
RD
BK
BK
BK
RD
RD
BK
RD
1
2
1
2
CN402B
CN402A
SPEAKERS
L-CH
SPEAKERS
R-CH
BK
BK
RD
E
C
B
R240
C227
C233
R234
CON201A
R407
CN402
2
1
R408
2
1
LD508
LD507
R505 R504
Q501
IC501
LD505
LD504
LD503
LD502
LD501
R507
C502
D501
R502
R501
C501
R503
R506
CN201A
BUILT-IN
MICROPHONE
BK
WH BK
WH
1
3
21
5
1
1
2
3
CN203
CN202
1
2
3
4
5
WH
PK
WH
MIC
JK202
MIXING
MICROPHONE
JK201
LINE INPUT
L-CH
R-CH
BR
COLOR TABLE
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 AB
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)
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 ]
BATTERY PWB-A6
CN601
BK
RD
1
2
HEADPHONES PWB-A3
CN401 JK401
HEADPHONES
1
2
3
1
3
1
2
3
4
5
6
7
8
9
RD
JK401
(244)
(245)
JK202
RD
VR301VR303 VR302 X-BASS
GRAPHIC
EQUALIZER
MAX
MIN
AAA
BBB
10KHz 1KHz
GRAPHIC
EQUALIZER PWB-B
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QT-90W
– 14 –
BLOCK DIAGRAM OF IC
IC401/IC402: BA5415A
µ- COM
ST. RY
47µ
47µ
100µ
1K 33
GND
47µ
1000µ
1000µ
44K
44K
47µ
0.1µ
0.1µ1000µ
VCC
about
90µA
(at 5V)
33K 270
RL
IC501: LB1403N
IC301: BA4558
amp
Pre a.
Gnd INPUT1 NF1 BS1 OUTPUT1 Vcc
Power a. Gnd
52 Fin
20K
INPUT
AMP 1 OUTPUT
AMP 1
INPUT
AMP 2 OUTPUT
AMP 2
20K
Fin
DC2
OUTPUT2
BS2
Power a. Gnd
NF2
INPUT2
DC 1
Small 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
RFAMP 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
3512
20 17 16 11 13 15 14 21
7
10
9
18
19
8
12
4
6
24
23
22
1 2 3456789
1
6
53
2
4
7
9
811
10
12
1
Vc1 2
Vc2 3
Vc3 4
Vc4 5
GND 6
Vc5 7
Amp. Out 9
Vcc
8
In
78910 11 12
1
2
3
45
6
All manuals and user guides at all-guides.com

QT-90W
PARTS GUIDE
NOTE:
Parts marked with “ ” are important for maintaining the safety of the set.
Besure toreplacepartswithspecifiedonesfor maintainingthesafetyandperformanceoftheset.
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
MARK: SPARE PARTS-DELIVERY SECTION
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
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%.
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.
STEREO RADIO CASSETTE RECORDER
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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
1T501 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 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
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all-guides.com

NO.
PRICE
RANK
DESCRIPTIONPARTS CODE
NO. PARTS CODE
PRICE
RANK
DESCRIPTION
QT-90W
– 2 –
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
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
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
1R612 92L1509-006008 J 2.2 ohms,1/4W,Fusible
R613 VRD-ST2CD561J J AA 560 ohms,1/6W
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
1F601 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
[Band Selector]
S201 92L4104-013001 J Switch,Push Type
[Record/Playback]
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PRICE
RANK
DESCRIPTION
NO. PARTS CODE NO. PARTS CODE
PRICE
RANK
DESCRIPTION
QT-90W
– 3 –
S301 92L4103-022001 J Switch,Slide Type
[Function/Beat Cancel]
1S501 92L4106-011001 J Switch,Slide Type
[Voltage Selector]
1SO501 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]
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/
Main PWB
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
1240 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
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
ACCESSORIES/PACKING PARTS
1QACCA0004AW00 J AK AC Power Supply Cord
1QACCB0012AW00 J AS AC Power Supply Cord
1QACCE0007AW00 J AH AC Power Supply Cord
1QACCL0002AW00 J AN AC Power Supply Cord
1QACCL0008AW00 J AC Power Supply Cord
1QPLGA0003AWZZ J AF Adaptor,AC Plug
1QPLGA0004AWZZ 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/
Surround/Battery
(Combined Ass’y)
PWB-B 92L771QT900102 J — Graphic Equalizer
All manuals and user guides at all-guides.com

QT-90W
A
B
C
D
E
F
G
H
123456
Figure 4 CABINET EXPLODED VIEW
– 4 –
Note: Only the unit and consumale parts are supplied as parts supply for the Tape mechanism.
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
612239
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
All manuals and user guides at all-guides.com

QT-90W
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.
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
All manuals and user guides at all-guides.com