Page 1
MANUAL
S9381 JC545XGY
l
In the interests of user-safety the set should be restored to its original
condition and only parts identical to those specified be used.
Page
..
.............................................................................................................
2
NAMES OF
PARTS
...........................
....................................................................................
2
DISASSEMBLY..
..................
..................................................................................................
3
REMOVING AND REINSTALLING THE MAIN PARTS..
.......................................................
4
ADJUSTMENT
.......................................................................................................................
5
NOTES ON SCHEMATIC DIAGRAM
....................................................................................
6
TYPES OF TRANSISTOR AND
LED
......................
...............................................................
6
OF DIAL POINTER
...............................
.....................................................................
6
EXPLODED
VIEW
.........................................
....................................................................
SCHEMATIC
DIAGRAM
SIDE OF
.............................................
9-12
REPLACEMENT
PARTS
LIST
.......................................................................................
13-15
Page 2
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
General
Tape deck
Power source:
Output power:
DC 3 V[“AA” size
or
HP-7) battery
2 or external DC 3 V]
(DC operation)
Dimension:
Weight:
RMS;
(5
5mW)
(DC operation, 10
T
Width;
mm
Height; 117 mm
6”)
Depth; 29.9 mm
(6.5 oz.) without batteries
Frequency response:
40
15,000 Hz
Radio
Frequency range:
FM
;
MHZ
AM; 526.5
Headphones
Type:
Impedance:
Inner-ear dynamic
24 ohms
Specifications for this model are subject to change without
prior notice.
1. Power/Battery Indicator
2. Extra Bass Switch: X-BASS
3. Volume Control
4. FunctionTape Selector switch
5.
Headphones Socket
6.
Tape Direction Switch: 41,
7. Stop Button:
q
Fast Wind Buttons:
9.
Play Botton:
10. External DC Power Input Socket
Tuning Control
12. Band Selector Switch
13.
Cassette Compartment
14.
Battery Compartment
15.
Headphones
2345
Figure
Figure 2-2
Figure 2-3
Page 3
Caution on Disassembly
Follow the below-mentioned notes when disassem-bling the
unit and reassembling it, to keep its safety and excellent
performance:
1,
Take cassette tape out of the unit.
Be sure to remove the batteries from the unit.
After servicing the unit, be sure to rearrange the leads
where they were before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
Front
Cabinet
Cassette
Compartment
I
(Front Cabinet)
Rear Cabinet,
Button Cover
Black
Figure 3-l
Figure 3-2
Figure 3-3
1
Front
Cabinet
‘Motor
Figure 3-4
x 2
Mechanism
Block
Motor
Figure 3-5
Page 4
TAPE MECHANISM SECTION
Perform steps 1, 2, 5, 6 and 7 of the disassembly method to
remove the tape mechanism. (See Page 3.)
How to remove the playback head
(See Fig. 4-l
1.
to remove the playback head.
Note: After replacing the playback head and completing the
azimuth adjustment, be sure to apply screwlock.
How to remove the pinch roller
(See Fig. 4-l.)
Rotate the pinch roller 2
as shown in
and raise
it.
How to remove the main/motor belt
(See Fig. 4-2.)
1. Remove the motor belt (Cl) xl pc.
2. Remove the main belt (C2) x
How
to remove the motor
(See Fig. 4-2.)
Remove the motor belt (Cl)
1 pc.
2. Remove the screws
x 2
to remove the motor.
How to remove the flywheel
(See Figs. 4-2 and 4-3.)
1. Remove the main belt (C2)
1 pc.
2. Remove the washers
x
3. Remove the stop washers (D2) x 2
with a small precision
screwdriver to extract flywheel from the capstan
Note: When the stop washer is deformed or damaged, replace it
with a new one.
How to reinstall the parts
Install each part in the reverse order of the removal with care.
(Al)
2
x 2.2mm
Playback
Head
Figure
Flywheel
Figure 4-2
Flywheel
Figure 4-3
Page 5
TUNER SECTION
High-range frequency
l
AM IF/RF
MECHANISM SECTION
l
Driving Force check
Torque Meter
Specified value
Play: TW-2412
Reverse play:
l
Torque Check
Torque Meter
Over 30
Over 30
Specified value
rest Stage
Adjusting Point
VR301
14.65 + 0.01
(input: Antenna
Output: TP5)
2
VRl
Voltage Vt
Obtain 9
2. VR2 (Input: Antenna
Output:
3
Voltage Vt
Obtain 1.5
0.03
2. VR3 (input: Antenna
Output:
4
Repeat steps 2 and 3 until no further improvement
can be made.
Specified Value/
Instrument Connection
Plav: TW-2111
Reverse play: Tw-2121
Fast forward:
I 20 to 50
20 to 50
55
l
Head Azimuth
Test Tape
Instrument Connection
I
Ml-T-114
Headphones Socket
(455
Obtain the best output.
(Input: Antenna.
Output: TP3)
Maximize the output.
(Input: Antenna
Output: Headphones Socket)
(Lord resistance: 24 ohms)
l
Tape Speed
Test Tape Adjusting Specified value Instrument Connection
Point
3,000
90 Hz
Headphones Socket
3and
(510
TC3
(1,650
Tracking
(600
Checking
(I ,400
Maximize the output.
(input: Antenna
Output: Headphones Socket)
(Lord resistance: 24 ohms)
l
FM IF/RF
Test Stage
Adjusting Point Specified Value/
Instrument Connection
IF
Checking
MHz)
Check the
curve to the center.
(Input: TP2
Output: TP3)
Maximize the output.
(Input: TP4
Output: Headphones Socket)
(Lord resistance: 24 ohms)
Band
coverage
(87.3 MHz)
TC2
MHz)
Tracking
(88 MHz)
Checking
Maximize the output.
(Input: TP4
Output: Headphones Socket)
(Lord resistance: 24 ohms)
TUNER PWB-A
FM BAND COVERAGE
AMBANDCOVERAGE
Figure 5 ADJUSTMENT POINTS
Page 6
. Resistor:
To differentite the units of resistors, such symbol as
and
are
used: the symbol
means 1000 ohm and the symbol
means
1000 Kohm and the resistor without any symbol is ohm-type
resistor. Beside, the one with “Fusible” is a fuse type.
Capacitor:
To indicate the unit of capacitor, a symbol
is used: this symbol
means micro-micro-farad and the unit of the capacitor without
such a symbol is
As to electrolytic capacitor, the
expression “capacitance/withstand voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
Polypropylene type
DTC144 EK
TR
Cl
El
l
The indicated voltage in each section is the one measured by
Digital Multimeter between such a section and the chassis with
no signal given.
1.
Tuner
FM mode
FM stereo mode
Mraking except for
/c
AM mode
l
Schematic Diagram and Wiring Side of
model
are subject to change for improvement without prior notice.
REF. NO.
DESCRIPTION
POSITION
BAND FM ST
SW101
DIRECTION
FWD
SW102
X-BASS
OFF
FUNCTION
TAPE/NORMAL
SW104 MAIN
ON
TOP VIEW
svc341
TOP VIEW
SV160
TOP VIEW
Figure
TYPES OF
AND LED
1. Turn the tuning knob fully to direction
2. Set the dial pointer to the
point, insert it into the tuner frame.
Tuning Knob
‘Tuner Frame (115)
Figure 6-2
Page 7
FM SIGNAL
, ,
!
AM A
A
-----
r--------
CONVERTER
PLAYBACK HEAD
2
4. 7.
l
can be
on page 6.
Figure 9
Page 8
MAIN
EXT. DC POWER
BATTERIES
AA’
EXTERNAL DC
X-BASS
MUTING
X-BASS
SW!
ON
OFF
MOTOR
DRIVER
0. 022
X-BASS
623 L6
12
DIAGRAM
Page 9
1
PWB-A
AM
BAR ANT.
BATTERY
BATTERIES
SIZE
external DC
Figure
WIRING
Page 10
I
FUNCTION
I
RADIO -TAPE
TAPE
PHONES
NORMAL-METAL/
VOLUME
I
BATTERIES DC
al DC
x2
BATTERY
TERMINAL
SPEED
GR
SW
MAIN
PLAY
HEAD
EXT. DC POWER
MI
MOTOR
7 8
9
11
12
SIDE OF
Page 11
REPLACEMENT PARTS LIST
PART NO.
DESCRIPTION
INTEGRATED CIRCUITS
Motor
DC-DC
TRANSISTORS
4103,104
TR
EK
DIODES
LED201
1
FILTERS
CF2
CF4
CF5
AM IF
FM IF
RF
Discriminator
VCO
FM Band Pass
TRANSFORMERS
AM IF
COILS
FM RF
FM OSC
AM OSC
RC
AM Bar Antenna
10
10
DC-DC Converter
VARIABLE RESISTORS
VR201
100 kohm
30 kohms
[Tuning Voltage]
10 kohm
500 ohms
[Tape
VR301
10 kohm
[Tuning Voltage]
VARIABLE CAPACITORS
TC2
“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
CODE
PART NO.
DESCRIPTION
CODE
AP
AL
AE
AH
AD
AB
AB
AC
AD
AA
AD
AM
AM
AN
AE
AK
AH
AH
AL
AF
AB
AB
AG
AF
AC
AK
AC
AF
AF
TC3
Trimmer,20
Variable Capacitance,
svc341
Variable Capacitance,
AF
AG
AD
THERMISTOR
PR202 RH-QXOlOZPFZZ
ohm
AC
CAPACITORS
There are two types of capacitors available and they can be identified from each
other by reading their Part Numbers.
Ceramic type capacitor;
A symbol
or
is given at the 3rd digit of its Part Number like
(or
.
. Semiconductor type capacitor:
A symbol
is given at the 3rd digit of its Part Number like
The capacitance error of each capacitor is indicated by the symbol given at the
13th digit of the Part Number as
(Tubular type ceramic capacitor is identified by the symbol
of the
part NO.
this
does not mean the lead wire.)
(Tubular type ceramic capacitor is identified by the symbol
of the part
NO.
this
does not mean the lead wire.)
Unless otherwise specified, electrolytic capacitors are +20% type.
Cl6
Cl8
C24
C27
C28
c29
c31
c32
470
VCSATEOJJ 15
Tantalum
0.022
1
VCSATEOJ
15
Tantalum
0.022
0.1
0.1
1
330
0.47
7
330
27
5
68
12
0.022
150
0.022
0.01
0.1
1
0.01
AD
AA
AB
AA
AD
AA
AA
AC
AC
AC
AB
AA
AB
AA
AA
AA
AA
AA
AA
AA
AA
AA
AB
AG
AC
AB
Page 12
DE
the
the
re.)
A
A
.A
A
\A
\A
\A
c35
Cl25
Cl26
Cl27
PART NO.
DESCRIPTION
330
4.7
Tantalum
0.0047
0.22
1
Tantalum
2.2
Tantalum
15
Tantalum
0.022
100
10
220
1
Tantalum
220
0.0015
5
150
1
100
12
RESISTORS
CODE
AA
AB
AA
AA
AA
AA
AC
AA
AC
AA
AA
AC
AC
AD
AC
AD
AA
AA
AA
AD
AB
AA
AA
AA
AA
AA
AA
AB
AA
AB
AA
AA
AA
(Unless otherwise specified, resistors are
type.) (Tubular
carbon film resistor
is identified the symbol
of the part NO
this
does not mean lead wire.)
0
AA
Green
0
AA
Green
4.7
AA
10
AA
22
AA
100
AA
100
AA
47
AA
18
AA
100
AA
470
AA
R12
100
AA
R13
470
AA
R14
100
AA
R15
2.7
AA
330
AA
R17
470
AA
100
AA
R20
56
AA
R124
R125
R133
R204
R205
R301
R302
Ml
SW102
8
9
10
11
12
13
14
15
16
17
20
21
22
24
25
27
28
29
30
PART NO.
DESCRIPTION
680
680
27
1.5
2.2
1.5
100
470
680
2.2
1
820
220
330
680
2.2
3.3
3.3
680
2.2
2
1
100
OTHER CIRCUITRY PARTS
Power Input
Motor with Pulley
Protector
Type
Type
Type
Type
[
FUNCTION
]
Type
MECHANICAL PARTS
Main Chassis
Head
Azimuth
Roller,
Fast Forward
Forward
Playback Head Ass'y
Flywheel
Forward
Flywheel
Sub Chassis
Forward
CODE
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AE
AF
AW
AE
AC
AG
AE
AE
AF
AS
AC
AA
AG
AC
AB
AD
AD
AW
AA
AA
AP
AP
AA
AA
AH
AH
AD
AA
AA
AG
AC
AC
AC
Page 13
PART NO.
DESCRIPTION
CODE
31
32
33
34
35
38
39
40
41
42
43
45
46
AC
AC
AB
AB
AA
AA
AA
AL
AE
AE
AC
AB
AB
130
131
601
602
603
48
49
50
53
55
56
58
59
60
61
62
AA
AC
AE
AD
AG
AD
AB
AA
AA
AG
AD
AB
65
AH
66
68
69
JO
Ml
Forward
Plate
Reel Ass’y
Forward
Ass’y
Fast Forward
Forward
Gear
Play
Gear
Play
Play
Screw,dl.JX2.7mm
Gear
Play
Gear
Play
Arm,
Rewind Play
Pinch Roller Ass’y,
Fast Forward
Pinch Roller
Motor
Pulley
Type
Type [MAIN
CABINET PARTS
AH
AD
AD
AA
AW
AG
SW104
AF
102
103
104
105
106
107
108
109
110
111
112
113
114
115
118
119
120
121
122
123
124
125
126
128
129
Front Cabinet
Rear Cabinet
Button Cover
GFTACO
Cassette Compartment
HBDGBO
Hi
AS
AE
AE
AG
AD
AB
Window
Button
Tape
Lid
Switch
AF
AE
AE
AB
AB
AA
AA
AA
AB
AC
PART NO.
LHLDAO
Holder
LHLDAO
Holder
ACCESSORIES/PACKING PARTS
Headphones
Packing Add.
Packing Case
SPAKFO
Clear Sheet
Packing
Packing
Polyethylene
Material
Polyethylene
Operation Manual
CODE
AB
AA
AA
AA
AY
AD
AD
AC
AA
AB
AA
AA
AF
Page 14
Writer and Editor: Quality
Reliability Control
of Communication
Audio Systems Group, Sharp Corp.
Printed in Japan
EX
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