Sharp QT-80W User manual

QT-80W
CONTENTS Page
SPECIFICATIONS ............................................................................................................................................................. 2
VOLTAGE SELECTION..................................................................................................................................................... 2
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................. 2
NAMES OF PARTS ........................................................................................................................................................... 3
HOW TO SET THE POINT "0" ON TUNER DIAL MEMORY............................................................................................. 3
DISASSEMBLY.................................................................................................................................................................. 4
REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 5
ADJUSTMENT ................................................................................................................................................................... 7
SCHEMATIC DIAGRAM .................................................................................................................................................. 10
WIRING SIDE OF P.W.BOARD....................................................................................................................................... 12
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 14
TYPES OF TRANSISTOR ............................................................................................................................................... 14
VOLTAGE ........................................................................................................................................................................ 14
PARTS GUIDE/EXPLODED VIEW
• In the interests of user-safety the set should be restored to its
originalconditionandonlypartsidenticaltothosespecifiedshould
be used.
SERVICEMANUAL
SHARP CORPORATION
No. S4129QT80W///
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
QT-80W
STEREO RADIO CASSETTE RECORDER
MODEL
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QT-80W
– 2 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
SPECIFICATIONS
Specifications for this model are subject to change without prior notice.
VOLTAGE SELECTION
92L3404-074001
QACCB0012AW00
QACCE0007AW00 QPLGA0004AWZZ
QPLGA0003AWZZ
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
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)
QACCL0002AW00/QACCL0008AW00
AC 110-127/220-240 V, 50/60 Hz
DC 12 V [“D” size (UM/SUM-1, R20 or HP-2) battery x 8]
20 W
MPO: 18 W (9 W + 9 W) (AC operation, 10 % T.H.D)
RMS: 10 W (5 W + 5 W) (DC operation, 10 % T.H.D)
8 cm (3-1/8”) full range speaker x 4
Headphones: 16-50 ohms (recommended: 32 ohms)
Mixing microphone: 600 ohms
Line input: 350 mV/47 kohms
Width: 520 mm (20-1/2”)
Height: 191 mm (7-1/2”)
Depth: 216 mm (8-1/2”)
4.2 kg (9.3 lbs.) without batteries
General
Power source
Power consumption
Output power
Speakers
Output terminal
Input terminals
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 9 V electric governor
AC bias
Magnet erase
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QT-80W
– 3 –
NAMES OF PARTS
HOW TO SET THE POINT "0" ON TUNER DIAL MEMORY
Figure 3
1. Remove the front cabinet and main PWB. (Refer to page 4,
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.
01. Function/Beat Cancel Switch
02. Cassette Compartment
03. Record Button
04. Play Button
05. Rewind Button
06. Fast Forward Button
07. Stop/Eject Button
08. Pause Button
09. Volume Control
10. Band Selector
11. Built-in Microphone
12. Extra Bass Button
13. Fine Tuning Control
14. Tuning Control
15. Mixing Microphone Socket
16. Line Input Sockets
17. AC Voltage Selector
18. AC Input Socket
19. Battery Compartment
20. Headphone Socket
12345678910
11 12 13 14
15 16
19 20
17 18
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
Mark “ ”
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QT-80W
– 4 –
1 Rear Cabinet 1. Battery Lid............ (A1) x1 4-1
2. Screw ................... (A2) x6
3. Screw ................... (A3) x4
2 Front Cabinet 1. Knob..................... (B1) x1 4-1
2. Nut........................ (B2) x1
3. Socket .................. (B3) x3 4-2
3 Jack PWB 1. Socket .................. (C1) x2 4-2
2. Screw ................... (C2) x2
4 Volume PWB 1. Socket ..................(D1) x1 4-2
5 Battery PWB 1. Socket .................. (E1) x1 4-2
2. Hook..................... (E2) x1
6 Headphones PWB 1. Socket .................. (F1) x1 4-2
2. Screw ................... (F2) x1
7 Main PWB with 1. Screw ...................(G1) x2 4-2
Tape Mechanism 2. Screw ...................(G2) x1
8 Main PWB 1. Socket ..................(H1) x2 4-3
2. Screw ................... (H2) x4
3. Solder................... (H3) x2
9 Tape Mechanism 1. Open the cassette holder. 5-1
2. Screw ....................(J1) x4
10 X-BASS PWB 1. Screw ................... (K1) x3 5-2
DISASSEMBLY
STEP REMOVAL PROCEDURE FIGURE
Figure 4-3
Figure 4-1
Figure 4-2
Caution on Disassembly
Followthebelow-mentionednoteswhen 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.
(G1)x2
ø3x12mm
(C2)x2
ø4x14mm
(G2)x1
ø3x8mm
(C1)x1
(E2)x1
(B3)x2
(C1)x1(F1)x1
(D1)x1
(E1)x1
(B3)x1
Jack
PWB
Main PWB
Battery PWB
Headphones PWB
Tape Mechanism
Rear
Cabinet
Lug Wire
Handle
(F2)x1
ø4x10mm
(H3)x2
(H2)x4
ø3x10mm
(H1)x2
Main PWB
Tape Mechanism
Main
PWB
(B1)x1
(B2)x1
Front Cabinet
Rear Cabinet
Volume
PWB
(A3)x4
ø3x12mm
(A2)x6
ø3x30mm
(A1)x1
Figure 4-4
How to attach the tuning display label
(See Fig. 4-4.)
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-80W
– 5 –
(J1)x4
ø3x10mm
Tape Mechanism Stop/Eject Button
Push
Open
Cassette
Holder
Figure 5-2Figure 5-1
(K1)x3
ø2.6x8mm
Front Cabinet
X-BASS
PWB
TAPE MECHANISM SECTION
Performsteps1to9ofthedisassemblymethodtoremovethe
tape mechanism. (See page 4.)
How to remove the record / playback and erase
heads (See Fig. 5-3.)
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. 5-3. and then extract the erase head
upward.
Note:
After replacing the heads and performing the azimuth
adjustment, be sure to apply screwlock.
How to remove the pinch roller (See Fig. 5-4.)
1.Remove the screw(B1) x1 pc., andremove thepinch roller
upwards.
Figure 5-3
Figure 5-4
REMOVING AND REINSTALLING THE MAIN PARTS
Pinch Roller
(B1)x1
ø1.5x2.5mm
(A1)x2
ø2x7mm
Record/Playback
Head
Hook
(A2)x2
Erase Head
PLAY
Button
Push
Lug Wire
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QT-80W
– 6 –
How to remove the belts (See Fig. 6-1.)
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. 6-2.)
1. Remove the main belt. (See Fig. 6-1.)
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 6-1
Figure 6-2
Figure 6-3
How to remove the flywheel (See Fig. 6-3.)
1. Remove the belt. (See Fig. 6-1.)
2.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
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QT-80W
– 7 –
ADJUSTMENT
Figure 7
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 7. 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
10pF
1M ohm
10K ohm
D
G
S
0.1 F
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QT-80W
– 8 –
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
2.25MHz
3 Repeat step 1, 2 until no further improvement can be made.
4 SW1 Same as step 1 Same as step 1 Same as step 1 Adjust CT104 get MAX. Tune P.V.C. to 6 MHz
TRACKING fH: output at 6 MHz
6 MHz
5 SW1 Same as 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-80W
– 9 –
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 9-3.) 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 9-1 ADJUSTMENT POINTS
Figure 9-3
Erase Head
Head fixing
screw Record/
Playback
Head
Tape Mechanism
TP2 FM BAND
COVERAGE
FM
DETECTION
BIAS
OSCILLATION
FM
TRACKING
fL
fH
MW BAND
COVERAGE fH
MW
TRACKING fH
T105
T104
T103
CT101
CT102
T106
VR102
IC102
T102
CT104
T107
T101
CT103
T108
TUNER P.V.C.
L103
IC101 1
9
L102
T201
IC201
MAIN PWB
L109
MW BAR ANTENNA
TC1 TC2
TC3 TC4
MW BAND
COVERAGE fL
SW1 BAND
COVERAGE
fH
fL
SW1
TRACKING fL
fH
SW2
TRACKING
fL
fH
SW2 BAND
COVERAGE
fL
fH
MW IF
FM IF fL
fH
S201
RECORD/PLAYBACK
MW
TRACKING fL
VCO
1
13 12
24
21
ROD
ANTENNA
C216
TP5
TP1
TP3
TP4
17
18
8
Figure 9-2 ADJUSTMENT POINTS
BIAS
OSCILLATION
T201
IC201
MAIN PWB
S201
RECORD/PLAYBACK
C216
TP5
1
2
3
4
REC PLAY
BACK
ERASE HEAD
RECORD/
PLAYBACK HEAD
TAPE
CN504
M601
TAPE
MOTOR
SW601
TAPE MAIN
CN201
1
2
3
4
CON201
1
2
3
4
4
3
2
1
CON504
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QT-80W
– 10 –
• NOTES ON SCHEMATIC DIAGRAM can be found on page 14.
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
11 2
21
2
3
4
5
1
2
3
5
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
TAPE
(STAND-BY)
FM(ST)
FM(MONO)/
BEAT
LINE
3
2
1
TAPE(STAND-BY)
FM(ST)
FM(MONO)/BEAT
LINE
1
2
3
4
M
ERASE HEAD
RECORD/
PLAYBACK
HEAD
L-CH
R-CH
TAPE
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
123456 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-E
S201-D
S201-B
S201-A
S201-I
S201-H S301-E
S201-G
S101-B
S301-F
S301-B
S301-C
S301-D
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
+9V
PLAY
1
5
1
3
+B
+B
+B
+B
+B +B
S101
BAND
SELECTOR
S201-C
88-108MHz
S201-F
S301
FUNCTION/
BEAT CANCEL
S301
FUNCTION/
BEAT CANCEL
TP3
TP4
TP5
TP2
TP1
GND GND
R
P
MIXING MIC
PRE AMP.
SWITCHING
BIAS OSC.
BP101
BAND PASS
FILTER C101
0.001
C102
0.001
L102
FM RF
C106
22P(CH)
C104
0.001
R122
10 C103
10/16
C141
10P
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
C111
300P
C112
5P
C113
1500P
CT102
10P
C114
0.0047
CT101
10P
C118
0.22
JK201
MIXING
MICROPHONE
R240
1K
C227
10/16
R234
4.7K
CN202
CN203
CON203
JK301
LINE INPUT
BUILT-IN
MICROPHONE
CN301
R242
10K
CON202
C235
47/16
Q204
SS8550
C231
1/50
R233
1.8K
C230
0.01(ML)
CON301
R301
10K
R303
10K
R302
2.2K
R304
2.2K
R211
18K
C211
0.0022(ML)
R212
18K
C212
0.0022(ML)
T201
BIAS
OSCILLATION
C216
0.0027
C223
100P
R253
10K
R254
10K
CON201
CN201
C251
0.018
(ML)
C220
0.0068(ML) C219
0.022
(ML)
Q201
3DA8050
R247
220
C218
47/16
R225
22K
R224
10
C207
0.47/50
C208
0.47/50
C206
0.022(ML)
R231
120K
C201
0.0015(ML)
R204
150
R208
5.6K
R201
3.9K
C213
47/16
C259
0.0027
R213
470K
C258
330P
C204
47/16
C202
0.0015(ML)
R202
3.9K
IC201
BA3313L
C209
0.001(ML)
R215
39K
C210
0.001
(ML)
R216
39K
R222
22K
R223
22K
Q207
2SC945
C233
1/50
R237
4.7K
R256
680K
R241
330
R243
22K
R112
47
R111
47
C120
10/16
C119
0.22
T105
SW2 OSCILLATION
T104
SW1 OSCILLATION
T102
SW2 ANTENNA
T103
MW OSCILLATION
R124
33K
R110
100
C121
0.22
T101
SW1 ANTENNA
C139
0.02
L109
MW BAR ANTENNA
C138
220/16
R101
47
R102
33
T108
FM IF
D103
1N4148
C137
0.22
C107
15P
(CH)
C143
0.1
IC101
FM FRONT END
LA1186N
C108
20P
(CH) C109
5P
L103
FM OSC.
R103
220K R104 820K
C110
0.02
C142
0.02
T106
FM
DETECTION
R105
100
R121
3.9K
C145
100/16
CF101
10.7MHz
FM IF
C123
0.02
C124
22/16
CF102
AM IF
T107
MW IF
R244
22K
R217
330K
R218
330K
R214
100
C261
330P
C260
0.0027
C214
220/16
C257
1/50
C215
0.022(ML)
R207
5.6K
R232
120K
R209
1K R219
27K
R220
27K
R210
1K
R501
560
Q501
3DA8050
C518
0.1 C516
220/16 ZD501
TZX8V2 C
C203
47/16
R203
150
R251
18K
D201
1N4148-T72
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
0.02
R123
100
C303
0.047(ML)
CON302
C304
0.047(ML)
M601
TAPE
MOTOR
SW601
TAPE MAIN
CN504
R250
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
RECORD/
PLAYBACK
S101
BAND
SELECTOR
S301
FUNCTION/
BEAT CANCEL
S301
FUNCTION/
BEAT CANCEL
VC2
TC2
TC1
VC1
TC4
VC4
TC3
VC3
MIC
Q208
2SC945
C270
10/16
S201
RECORD/PLAYBACK
All manuals and user guides at all-guides.com

QT-80W
– 11 –
Figure 11 SCHEMATIC DIAGRAM (2/2)
78 9101112
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
IC401: BA5415A
VRE1
RF MIX REG
BUTTER
OSC
ST. BY
33K 240
47µ
47µ100µ
240
33K
GND
44K
44K
0.1µ
0.1µ
47µ
1000µ
1000µ
VCC
RL
1000µ
47µ
RL
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
613
2
11
10
12
8
9
7
5
4
3
2
1
1
2
3
4
1
3
7
5
4
2
6
1
3
7
5
4
2
6
C420
1000P
STAND-BY
+12V DC
11
22
0V
AC 220-240 V
AC 110-127 V/220-240 V,
50/60 Hz
AC POWER
SUPPLY CORD
AC 110-127 V/
220-240 V,
50/60 Hz
BATTERY (+12V)
55
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
L-CH
SPEAKERS
6 OHM
6 OHM
6 OHM
6 OHM
RECORD SIGNAL
PLAYBACK SIGNAL
FM SIGNAL
MW/SW1/SW2 SIGNAL
MAIN PWB-A1
R-CH
SPEAKERS
BATTERIES
DC 12 V [ "D" SIZE
(UM/SUM-1, R20 or
HP-2)BATTERY x 8 ]
VOLUME PWB-A4
HEADPHONES
PWB-A3
BATTERY
PWB-A6
X-BASS PWB-A5
OFF
OFF
ON
ON
12
6
5
4
7
9
810
11
2
1
3
S302-A
S302-B
VR301-A
VR301-B
S301-A
IC401
AC 110-127 V
3
1
3
65
1
+B
+B
+B +B
+B +B
+B
+B
+B
+B
IC BLOCK DIAGRAM
TAPE(STAND-BY)
FM(ST)
FM(MONO)/BEAT
LINE
S301
FUNCTION/
BEAT CANCEL
MOTOR
CONTROL
REGULATOR
VOLUME
CONTROL
VOLUME
CONTROL
X-BASS
CONTROL
X-BASS
CONTROL
R221
220
R305
4.7K
CN302
S302
X-BASS
R308
4.7K
CON504
D401
1N4148-T72
Q401
3DA8050
C514
100/16
ZD401
TZX10V C
R410
560
C415
100/16
Q304
2SC945
R326
22K
R309
6.8K
R310
3.9K
R318
10K C302
220P
C306
1/50
C307
1/50
R312
330K
R321
4.7K
R322
4.7K
C310
0.15(ML)
C312
0.15(ML)
C309
0.0015(ML)
C311
0.0015
(ML)
CON303
CN303
R307
3.9K
R306
6.8K
R325
22K
R311
330K
C305
1/50
C301
220P
C256
1000/16
R317
10K
C308
1/50
R313
470
Q301
2SC945
VR301
50K(B)
R315
2.2K
R316
470
Q302
2SC945
Q404
SS8550 R409
2.2
R431
22K
R432
1K
D404
1N4148
D403
1N4148
R433
1K
R434
22K
R401
1K
R402
1K
R404
33K
R403
33K
R406
220
R405
220
C402
1/50
C404
47/16
R423
47K
R413
3.3
C401
1/50
C416
100/16
C403
47/16
C413
470/16
C407
47/16 C409
1000/16
C417
0.1
C411
0.1(ML)
C405
0.1
C412
0.1(ML)
C406
0.1
C408
47/16
R414
3.3
C410
1000/16
IC401
BA5415A
POWER AMP.
Q405
SS8550
C512
3300/16
C511
0.1
C501
0.02
C502
0.02
C503
0.02
C504
0.02
D501
1N4004S
D502
1N4004S
D503
1N4004S
D504
1N4004S
F501
T2A L 250V
CON502
CON601
T501
POWER
TRANSFORMER SO501
AC INPUT SOCKET
CON501
CN501
R408
150 R407
150
JK401
HEADPHONES
CON503
CN503
Q303
2SC945
C419
1000P
SP503
SP504
SP501
SP502
SW501
VOLTAGE
SELECTOR
VOLUME
R314
2.2K
All manuals and user guides at all-guides.com
all-guides.com

QT-80W
– 12 –
A
B
C
D
E
F
G
H
1234 5 6
Figure 12 WIRING OF P.W.BOARD (1/2)
T105
T104
T103
C118
CT101
C114
CT102
C113
R124
C112
C111
R110
C145
C137
C136
C119
C120
C121
C141
R112
R111
S101
R105
R121
R117
CF101
24201513
C138
TP4
C132 C131
T106
R120
C135
VR102
R119
IC102
C133
T102
CT104
R101
T107
T101 CT103
C139
C103
T108
D103
1
1
2
3
51012
C123
C124
CF102
C127
C142
C110
R103
R118 R104
R123
R113
R115
C128
TP3
TP1
C134
C129
C126
C125
R116
R114
VR101
FINE
TUNING
R108
VD101
C117
C116
R107
R109
C115 R106
C108
C107
L103
R102
TP2
C109
C104 C143
IC101
1
1
2
3
4
5
2
3
4
5
6
7
8
9
C106 C102
R122
C101
L102
C223
EC
B
R253
C218
R254 Q208
R247
R214
D201
C203
R203
R225
C219 C220
C251
T201
C216
R224
TP5
Q201
R207
R251
C207
C261
C257 C214
C259
R202
C260
R232C205
R211
C211 C201
R213
R201
C213
C212
R212
R250
IC201
C258
R219
R220
C204
R210
C208
R208
R209
R204
C202 C206
R231
C256
R221
C210
R216
R241
R242
R314
R315
C209
C235
BP101
Q207 C231
R233
R256
CON202
C230
C233
R318
R237
Q204
E
E
C
C
B
B
E
C
B
E
E
E
C
C
C
B
B
B
R317
R215
C309
Q304
Q303
R223
R222
R217
R243
R244
R326
R325
C308
R311
C305
R218
R306
R316
Q301
Q302
C301
R313
C307
R312
C306
C302
R305
R307
R309
R308
R310
C303
C304
CON302
S301
C310
CON303
C311
C312
1
1234567
234
ECB
Q501
CON201
R501
C516
C416
S201
RECORD/
PLAYBACK
ZD501
C415
R410
C514
Q401
E
E
B
B
C
C
1
1
2
3
4
5
6
7
8
9
10
11
12
234
C518
ZD401
C417
R405
C402
D401
C401
R403
R404
C403
R321
R401
C404
R423
R322
D404
R433
R402
C405
C407
IC401
C420
C419
R406
C412
C413
C411
R414 R413
C409
C410
CON501
12345 R302
R304
R303
R301
123
CON301
D403
R432
R435
CON503
4321
C512
E
E
C
CB
R434
Q404
Q405
B
C501
D501
D503
CON502
C502
C504
D504
D502
C511
C408
C406
C503
12
F501
T2A L 250V
CON504
1
3579
11 246810
12
VC4 TC4
VC3 TC3
VC2
TC2
VC1
TC1
321
AD
MAIN PWB-A1
FM
E
F
MW
SW1
SW2
S101
BAND
SELECTOR
B
C
(233)
ROD
ANTENNA(228)
GY CN201
BK
WH
RD
BK 1
2
3
4
(239)
STAND-BY
A
B
FM(ST)
TAPE
LINE
FM(MONO)
S301
FUNCTION/
BEAT CANCEL
ABC
D
E
F
GHI
REC.
PLAY
BACK
ERASE
HEAD
(241-4)
BK
RD
WH
RECORD/
PLAYBACK
HEAD(241-3)
TAPE
CN504
BL
BL OR
RD
BK 1
2
3
4
BK
GY
GND
M601
TAPE MOTOR
(241-5)
RD
BK
A
B
C
D
E
F
ON
BEAT
CANCEL
OR
SW601
TAPE MAIN
(241-6)
VCO
L109
MW BAR ANTENNA
23 1
C122
C270
132
S301
FUNCTION/
BEAT CANCEL
S101
BAND SELECTOR
S201
All manuals and user guides at all-guides.com

QT-80W
– 13 –
Figure 13 WIRING OF P.W.BOARD (2/2)
78 9101112
R234
R240
C227
1
2
CON203
VR301-A
VR301
VOLUME
VR301-B
R408
R407
S302
X-BASS
OFF
ON
AB
AC POWER
SUPPLY CORD
AC 110-127 V/
AC 220-240 V,
50/60 Hz
SO501
AC INPUT
SOCKET
AC 110-127 V/
AC 220-240 V,
50/60 Hz
CN203
BUILT-IN
MICROPHONE
BK
WH BK
WH
1
3
2
1
5
SP503
SP504
SP501
SP502
JK201
MIXING
MICROPHONE
BK
RD
BK
RD
L-CH
SPEAKERS
R-CH
SPEAKERS
JK301
LINE INPUT
L-CH
R-CH
CN503
BK
BK
RD
RD
BK
RD
BK
RD
BR
COLOR TABLE
RD(R)
OR
YL
GR
BL
BROWN
RED
ORANGE
YELLOW
GREEN
BLUE
JACK PWB-A2
VOLUME PWB-A4
1
7
1
2
3
CN202
CN301
5
4
3
2
1
WH
PK
WH
X-BASS PWB-A5
7
6
5
4
3
2
1
CN303
RD
RD RD
BK
1
SW501
VOLTAGE SELECTOR
AC 220 V-240 V AC 110 V-127 V
BL
BK
WH
VL
GY
WH(W)
BK
PK
VIOLET
GRAY
WHITE
BLACK
PINK
T501
POWER
TRANSFORMER
YL
YL
PK
WH
WH
CN302
1
2
3
1
3
HEADPHONES
PWB-A3
CN501
JK401
HEADPHONES
1
2
3
4
5
1
5
RD
BK
(230)
(231)
BATTERIES
DC 12 V [ "D" size
(UM/SUM-1,R20 or HP2)
battery x 8 ]
BATTERY PWB-A6
CON601
BK
RD
1
2
BK
RD
BK
BR
WH
YL
BL
MIC
RD
BK
WH
WH
WH
RD
WH
BL
JK201
1
2
3
4
WH
WH
WH
WH
WH
JK401
All manuals and user guides at all-guides.com

QT-80W
– 14 –
VOLTAGE
NOTES ON SCHEMATIC DIAGRAM
TYPES OF TRANSISTOR
•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
S302 X-BASS OFF—ON
SW501 VOLTAGE SELECTOR AC 220-240 V—
AC 110-127 V
SW601 TAPE MAIN OFF—ON
REF. NO DESCRIPTION POSITION
ECB
FRONT
VIEW
2SC945
3DA8550
SS8550
EBC
FRONT
VIEW
3DA8050
IC101: LA1186N [FM]
Pin No.
Voltage
IC201: BA3313L [PLAYBACK]
Pin No.
Voltage
IC102: LA1805 [FM]
Pin No.
Voltage
Pin No.
Voltage
IC102: LA1805 [MW/SW1/SW2]
Pin No.
Voltage
Pin No
Voltage
IC401: BA5415A [FULL POWER]
Pin No.
Voltage
Q404: SS8550
Pin No.
Voltage
Q405: SS8550
Pin No.
Voltage
Q501: 3DA8050
Pin No.
Voltage
Q301: 2SC945
Pin No.
Voltage
Q207: 2SC945
Pin No.
Voltage
Q302: 2SC945
Pin No.
Voltage
Q303: 2SC945
Pin No.
Voltage
Q304: 2SC945
Pin No.
Voltage
Q201: 3DA8050
Pin No.
Voltage
Q204: SS8550
Pin No.
Voltage
IC201: BA3313L [RECORD]
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
13V 7.7V 13V 0.6V 5V 5.2V 13V 0V 0.6V 13V 7.8V 0V
1 2 3 4 5 6 7 8 9 10 11 12
1 2 3
E: 15V C: 15V B: 0V 1 2 3
E:7.5V C: 15V B:8.2V
1 2 3
E: 0V C:3.5V B:0.5V
1 2 3
E: 0V C: 0V B: 5V
1 2 3
E: 7V B: 6.7V C:7.6V
1 2 3
E: 15V C: 15V B: 15V
1 2 3
E: 0V C:4V B:0.7V
1 2 3
E: 0V C:4V B:0.7V
1 2 3
E: 0V C: 0V B: 5V
1 2 3
E:7.5V C:7.5V B: 0V
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
All manuals and user guides at all-guides.com

QT-80W
PARTS GUIDE
NOTE:
Parts marked with “ ” are important for maintaining the safety of the set.
Besure toreplacepartswithspecifiedonesfor maintainingthesafetyandperformanceoftheset.
MODEL QT-80W
“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-80W
– 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
IC401 92L2301-455001 J Power Amp.,BA5415A
TRANSISTORS
Q201 92L2103-109001 J Silicon,NPN,3DA8050
Q204 92L2101-025001 J Silicon,PNP,SS8550
Q207,208 92L2103-032001 J Silicon,NPN,2SC945
Q301~304 92L2103-032001 J Silicon,NPN,2SC945
Q401 92L2103-109001 J Silicon,NPN,3DA8050
Q404 92L2101-025001 J Silicon,PNP,SS8550
Q405 92L2101-025001 J Silicon,PNP,SS8550
Q501 92L2103-109001 J Silicon,NPN,3DA8050
DIODES
D103 VHD1N4148//-1 J AA Silicon,1N4148
D201 92L2501-010001 J Silicon,1N4148-T72
D401 92L2501-010001 J Silicon,1N4148-T72
D403,404 VHD1N4148//-1 J AA Silicon,1N4148
D501~504 VHD1N4004S/-1 J AB Silicon,1N4004S
VD101 92L2507-001001 J Silicon,1S2658
ZD401 92L2504-003001 J Zener,10V,TZX10V C
ZD501 92L2504-003019 J Zener,8.2V,TZX8V2 C
FILTERS
BP101 92L4401-008001 J Band Pass Filter
CF101 RFILF0072AFZZ J AG FM IF,10.7 MHz
CF102 92L4403-011001 J AM IF
TRANSFORMER
1T501 92L5102-109001 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 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
C101,102 VCCSPA1HL102J J AA 0.001 µF,50V
C103 VCEAZA1CW106M J AC 10 µF,16V,Electrolytic
C104 VCCSPA1HL102J J AA 0.001 µF,50V
C106 VCCCPA1HH220J J AA 22 pF (CH),50V
C107 VCCCPA1HH150J J AA 15 pF (CH),50V
C108 VCCCPA1HH200J J AA 20 pF (CH),50V
C109 VCCSPA1HL5R0D J AA 5 pF,50V
C110 VCKYPA1HF203Z J 0.02 µF,50V
C111 VCCSPA1HL301K J 300 pF,50V
C112 VCCSPA1HL5R0D J AA 5 pF,50V
C113 VCTYPA1HB152K J 1500 pF,50V
C114 VCKYPA1HF472Z J 0.0047 µF,50V
C115 VCCSPA1HL5R0D J AA 5 pF,50V
C116,117 VCKYPA1HF203Z J 0.02 µF,50V
C118,119 VCKYPA1CF224Z J 0.22 µF,16V
C120 VCEAZA1CW106M J AC 10 µF,16V,Electrolytic
C121 VCKYPA1CF224Z J 0.22 µF,16V
C122 92L1321-002005 J 0.02 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
C131 VCTYPA1HB152K J 1500 pF,50V
C132,133 VCEAZA1HW335M J AB 3.3 µF,50V,Electrolytic
C134 VCTYPA1HB471K J 470 pF,50V
C135 VCQYKA1HM822K J AA 0.0082 µF,50V,Mylar
C136 VCTYPA1HM472K J 4700 pF,50V
C137 VCKYPA1CF224Z J 0.22 µF,16V
C138 VCEAZA1CW227M J AC 220 µF,16V,Electrolytic
C139 VCKYPA1HF203Z J 0.02 µF,50V
C141 VCCCPA1HH100J J AA 10 pF (CH),50V
C142 VCKYPA1HF203Z J 0.02 µF,50V
C143 VCKYPA1HF104Z J 0.1 µF,50V
C145 VCEAZA1CW107M J AC 100 µF,16V,Electrolytic
C201,202 VCQYKA1HM152K J AB 0.0015 µF,50V,Mylar
C203,204 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C205,206 VCQYKA1HM223K J AB 0.022 µF,50V,Mylar
C207,208 VCEAZA1HW474M J AB 0.47 µF,50V,Electrolytic
C209,210 VCQYKA1HM102K J AA 0.001 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
C216 92L1331-005013 J 0.0027 µF,100V
C218 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C219 VCQYKA1HM223K J AB 0.022 µF,50V,Mylar
C220 VCQYKA1HM682K J AA 0.0068 µF,50V,Mylar
C223 VCCCPA1HH101J J AA 100 pF (CH),50V
C227 VCEAZA1CW106M J AC 10 µF,16V,Electrolytic
C230 VCQYKA1HM103K J AA 0.01 µF,50V,Mylar
C231 VCEAZA1HW105M J AB 1 µF,50V,Electrolytic
C233 VCEAZA1HW105M J AB 1 µF,50V,Electrolytic
C235 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C251 VCQYKA1HM183K J AB 0.018 µF,50V,Mylar
C256 VCEAZA1CW108M J 1000 µF,16V,Electrolytic
C257 VCEAZA1HW105M J AB 1 µF,50V,Electrolytic
C258 92L1321-001096 J 330 pF,50V
C259,260 92L1331-001023 J 0.0027 µF,100V
C261 92L1321-001096 J 330 pF,50V
C270 VCEAZA1CW106M J AC 10 µF,16V,Electrolytic
C301,302 92L1321-001016 J 220 pF,50V
C303,304 VCQYKA1HM473K J AB 0.047 µF,50V,Mylar
C305~308 VCEAZA1HW105M J AB 1 µF,50V,Electrolytic
C309 VCQYKA1HM152K J AB 0.0015 µF,100V,Mylar
C310 VCQYKA1HM154K J AB 0.15 µF,100V,Mylar
C311 VCQYKA1HM152K J AB 0.0015 µF,50V,Mylar
C312 VCQYKA1HM154K J AB 0.15 µF,100V,Mylar
C401,402 VCEAZA1HW105M J AB 1 µF,50V,Electrolytic
C403,404 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C405,406 VCKYPA1HF104Z J 0.1 µF,50V
C407,408 VCEAZA1CW476M J AB 47 µF,16V,Electrolytic
C409,410 92L1301-041012 J 1000 µF,16V,Electrolytic
C411,412 VCQYKA1HM104K J AB 0.1 µF,50V,Mylar
C413 VCEAZA1CW477M J AC 470 µF,16V,Electrolytic
C415,416 VCEAZA1CW107M J AC 100 µF,16V,Electrolytic
C417 VCKYPA1HF104Z J 0.1 µF,50V
C419,420 VCTYPA1HB102K J AA 1000 pF,50V
C501~504 VCKYPA1HF203Z J 0.02 µF,50V
C511 VCKYPA1HF104Z J 0.1 µF,50V
C512 92L1301-041025 J 3300 µF,16V,Electrolytic
C514 VCEAZA1CW107M J AC 100 µF,16V,Electrolytic
C516 VCEAZA1CW227M J AC 220 µF,16V,Electrolytic
C518 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
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NO.
PRICE
RANK
DESCRIPTIONPARTS CODE
NO. PARTS CODE
PRICE
RANK
DESCRIPTION
QT-80W
– 2 –
R106,107 VRD-ST2CD104J J AA 100 kohm,1/6W
R108,109 VRD-ST2CD223J J AA 22 kohms,1/6W
R110 VRD-ST2CD101J J AA 100 ohm,1/6W
R111,112 VRD-ST2CD470J J AA 47 ohms,1/6W
R113 VRD-ST2CD103J J AA 10 kohm,1/6W
R114 VRD-ST2CD223J J AA 22 kohms,1/6W
R115 VRD-ST2CD103J J AA 10 kohm,1/6W
R116 VRD-ST2CD223J J AA 22 kohms,1/6W
R117 VRD-ST2CD100J J AA 10 ohm,1/6W
R118 VRD-ST2CD104J J AA 100 kohm,1/6W
R119 VRD-ST2CD153J J AA 15 kohms,1/6W
R120 VRD-ST2CD272J J AA 2.7 kohms,1/6W
R121 VRD-ST2CD392J J AA 3.9 kohms,1/6W
R122 VRD-ST2CD100J J AA 10 ohm,1/6W
R123 VRD-ST2CD101J J AA 100 ohm,1/6W
R124 VRD-ST2CD333J J AA 33 kohms,1/6W
R201,202 VRD-ST2CD392J J AA 3.9 kohms,1/6W
R203,204 VRD-ST2CD151J J AA 150 ohms,1/6W
R207,208 VRD-ST2CD562J J AA 5.6 kohms,1/6W
R209,210 VRD-ST2CD102J J AA 1 kohm,1/6W
R211,212 VRD-ST2CD183J J AA 18 kohms,1/6W
R213 VRD-ST2CD474J J AA 470 kohms,1/6W
R214 VRD-ST2CD331J J AA 330 ohms,1/6W
R215,216 VRD-ST2CD393J J AA 39 kohms,1/6W
R217,218 VRD-ST2CD334J J AA 330 kohms,1/6W
R219,220 VRD-ST2CD273J J AA 27 kohms,1/6W
R221 VRD-ST2CD221J J AA 220 ohms,1/6W
R222,223 VRD-ST2CD223J J AA 22 kohms,1/6W
R224 VRD-ST2CD100J J AA 10 ohm,1/6W
R225 VRD-ST2CD223J J AA 22 kohms,1/6W
R231,232 VRD-ST2CD124J J AA 120 kohms,1/6W
R233 VRD-ST2CD182J J AA 1.8 kohms,1/6W
R234 VRD-ST2CD472J J AA 4.7 kohms,1/6W
R237 VRD-ST2CD472J J AA 4.7 kohms,1/6W
R240 VRD-ST2CD102J J AA 1 kohm,1/6W
R241 VRD-ST2CD331J J AA 330 ohms,1/6W
R242 VRD-ST2CD103J J AA 10 kohm,1/6W
R243,244 VRD-ST2CD223J J AA 22 kohms,1/6W
R247 VRD-ST2CD221J J AA 220 ohms,1/6W
R250,251 VRD-ST2CD183J J AA 18 kohms,1/6W
R253,254 VRD-ST2CD103J J AA 10 kohm,1/6W
R256 VRD-ST2CD684J J AA 680 kohms,1/6W
R301 VRD-ST2CD103J J AA 10 kohm,1/6W
R302 VRD-ST2CD222J J AA 2.2 kohms,1/6W
R303 VRD-ST2CD103J J AA 10 kohm,1/6W
R304 VRD-ST2CD222J J AA 2.2 kohms,1/6W
R305 VRD-ST2CD472J J AA 4.7 kohms,1/6W
R306 VRD-ST2CD682J J AA 6.8 kohms,1/6W
R307 VRD-ST2CD392J J AA 3.9 kohms,1/6W
R308 VRD-ST2CD472J J AA 4.7 kohms,1/6W
R309 VRD-ST2CD682J J AA 6.8 kohms,1/6W
R310 VRD-ST2CD392J J AA 3.9 kohms,1/6W
R311,312 VRD-ST2CD334J J AA 330 kohms,1/6W
R313 VRD-ST2CD471J J AA 470 ohms,1/6W
R314,315 VRD-ST2CD222J J AA 2.2 kohms,1/6W
R316 VRD-ST2CD471J J AA 470 ohms,1/6W
R317,318 VRD-ST2CD103J J AA 10 kohm,1/6W
R321,322 VRD-ST2CD472J J AA 4.7 kohms,1/6W
R325,326 VRD-ST2CD223J J AA 22 kohms,1/6W
R401,402 VRD-ST2CD183J J AA 18 kohms,1/6W
R403,404 VRD-ST2CD333J J AA 33 kohms,1/6W
R405,406 VRD-ST2CD221J J AA 220 ohms,1/6W
R407,408 VRD-ST2EE151J J AA 150 ohms,1/4W
R409 VRD-ST2CD2R2J J AA 2.2 ohms,1/4W
R410 VRD-ST2CD561J J AA 560 ohms,1/6W
R413,414 VRD-ST2EE3R3J J AA 3.3 ohms,1/4W
R423 VRD-ST2CD473J J AA 47 kohms,1/6W
R432,433 VRD-ST2CD102J J AA 1 kohm,1/6W
R434 VRD-ST2CD223J J AA 22 kohms,1/6W
R501 VRD-ST2CD561J J AA 560 ohms,1/6W
OTHER CIRCUITRY PARTS
CN201 92L3421-773001 J Connector Ass’y,4Pin
CN202 92L3421-776001 J Connector Ass’y,5Pin
CN203 92L3421-775001 J Connector Ass’y,2Pin
CN301 92L3421-799001 J Connector Ass’y,3Pin
CN302 92L3421-777001 J Connector Ass’y,3Pin
CN303 92L3421-780001 J Connector Ass’y,7Pin
CN501 92L3421-778001 J Connector Ass’y,5Pin
CN503 92L3421-783001 J Connector Ass’y,4Pin
CN504 92L3421-774001 J Connector Ass’y,4Pin
CON201,202 92L3101-054003 J Plug,4Pin
CON203 92L3101-054001 J Plug,2Pin
CON301,302 92L3101-054002 J Plug,3Pin
CON303 92L3101-054006 J Plug,7Pin
CON501 92L3101-094004 J Plug,5Pin
CON502 92L3101-094001 J Plug,2Pin
CON503,504 92L3101-094003 J Plug,4Pin
CON601 92L3421-782001 J Connector Ass’y,2Pin
1F501 92L5301-021001 J Fuse,T2A L 250V
JK201 92L3202-013001 J Jack,Mixing Microphone
JK301 92L3201-073001 J Jack,Line Input
JK401 92L3202-024001 J Jack,Headphones
M601(241-5) 92L02103007B-0 J Motor with Pulley [Tape]
MIC 92L7201-002001 J Built-in Microphone
S101 92L4103-022001 J Switch,Slide Type[Band Selector]
S201 92L4104-013001 J Switch,Push Type
[Record/Playback]
S301 92L4103-022001 J Switch,Slide Type
[Function/Beat Cancel]
S302 92L4104-002001 J Switch,Push Type [X-BASS]
1SO501 92L3204-016001 J AC Input Socket
SP501~504 92L4801-083001 J Speaker
1SW501 92L4106-011001 J Switch,Slide Type
[Voltage Selector]
SW601(241-6) 92L4110-007001 J Switch,Leaf Type [Tape Main]
CABINET PARTS
201 92L799QT800101 J Front Cabinet Ass’y
202 92L799QT800301 J Rear Cabinet Ass’y
202- 1 92L202QT800101 J Rear Cabinet
202- 2 92L236QT800101 J Plate,Battery Cover
203 92L799QT800501 J Top Panel Ass’y
203- 1 92L201QT800101 J Top Panel
203- 2 92L286QT800101 J Name Plate,SHARP
204 92L799QT800601 J Dial Drum Ass’y
204- 1 92L242QT800101 J Dial Drum
204- 2 92L579QT800101 J Label,Frequency Range
205 92L210QT800101 J Cover,Battery
206 92L211QT800101 J Cover,Cassette Holder
207 92L220QT800101 J Bracket, Tape Mechanism/Main PWB
208 92L226QT800101 J Bracket,Tuning Knob
209 92L227QT800101 J Bracket,Cassette Holder Cover
210 92L248QT800101 J Handle
211 92L251QT800101 J Holder,Bar Antenna
212 92L260QT800101 J Lens,Dial Tuning
213 92L270QT800101 J Knob,Tuning
214 92L270QT800201 J Knob,Fine Tuning
215 92L272QT800101 J Button,Record
216 92L272QT800201 J Button,Play
217 92L272QT800301 J Button,Rewind
218 92L272QT800401 J Button,Fast Forward
219 92L272QT800501 J Button,Stop/Eject
220 92L272QT800601 J Button,Pause
221 92L273QT800101 J Knob,Volume
222 92L273QT800201 J Button,X-BASS
223 92L278QT800101 J Knob,Band Selector
224 92L278QT800101 J Knob,Function
225 92L289QT800101 J Ring,Volume Knob
226 92L290QT800101 J Gear,Dial
227 92L430QT800101 J Heat Sink
228 92L43330616501 J Rod Antenna
229 92L471QT800101 J Spring,Cassette Holder
230 92L47423010101 J Spring,Battery,-
231 92L47470120101 J Spring,Battery,+
232 92L476QT800101 J Spring,Record
233 92L489QT800101 J Bracket,Rod Antenna
234 92L579QT800103 J Label,Specifications
235 92L250QT800101 J Bracket,X-BASS PWB
236 92L70338050101 J Damper Gear Ass’y
237 92L42838560501 J Bracket,Tape Mechanism
238 92L7603-002001 J Ferrite Bar
239 92L3451-000127 J Lead Wire with Lug
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]
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PRICE
RANK
DESCRIPTION
NO. PARTS CODE
QT-80W
– 3 –
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 92L62030061070 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
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
92L31069420401 J Polyethylene Bag,Unit
192L3404-074001 J AC Power Supply Cord
92L510QT800101 J Packing Case
92L563184- J Label,Serial No.
92L579QT800201 J Label,Feature
92L580QT800101 J Operation Manual
92L593QT800101 J Schematic Diagram
P.W.B. ASSEMBLY (Not Replacement Item)
PWB-A1~6 92L771QT800101 J — Main/Jack/Headphones/Volume/
X-BASS/Battery
(Combined Ass’y)
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QT-80W
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.
227
617x2 IC401
Silicon
Grease
606
607
SW501
605x2
206 210
205
228
231
602
608x3
607
610x2
202-2
202-1
202
SO501
T501
605x2
620
230 233
612
239
616x2
615x2 621
209
207
614
609
601
226
208
606
211 238
603
214
PWB-A1
619x2
204
213
204-2
204-1
236
224 223
215
217
219
216
237
218
220
232
604
203 240x2
203-1
203-2
606x3
613x4
SP501
212
225
221
618
SP502
SP503
201
MIC
SP504
613x4 611x3
222
235 613x4
613x4
229
TAPE
MECHANISM
241(241-1, 241-2,
241-3, 241-4,
241-5 (M601),
241-6 (SW601))
PWB-A5
PWB-A4
Motor
M601
REW/FF
Clutch
Flywheel
FF/REW Belt
Main Belt
BELT CONNECTION
PWB-A3
PWB-A6 PWB-A2
608x3
607
607
234
606x2
606x2
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QT-80W
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.
A0105-1213DS•HA•C
SHARP CORPORATION
AV Systems Group
Audio Systems Division
Higashihiroshima, Hiroshima 739-0192, Japan
Printed in Japan
EX
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