WF-2100S
WF-2100W
CONTENTS
Page
SPECIFICATIONS .............................................................................................................................................................. 2
VOLTAGE SELECTION...................................................................................................................................................... 2
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR .................................................................................................. 2
NAMES OF PARTS ............................................................................................................................................................ 3
DISASSEMBLY................................................................................................................................................................... 4
REMOVING AND REINSTALLING THE MAIN PARTS...................................................................................................... 5
ADJUSTMENT .................................................................................................................................................................... 6
FITTING OF DIAL POINTER .............................................................................................................................................. 8
NOTES ON SCHEMATIC DIAGRAM ................................................................................................................................. 8
TYPES OF TRANSISTOR AND LED.................................................................................................................................. 9
VOLTAGE ........................................................................................................................................................................... 9
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD.............................................................................................. 10
PARTS GUIDE / EXPLODED VIEW
SERVICE MANUAL
SHARP CORPORATION
No. S2213WF2100WS
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
PORTABLE STEREO COMPONENT SYSTEM
MODEL WF-2100W(BK)
PORTABLE STEREO COMPONENT SYSTEM
MODEL WF-2100W(S)
WF-2100W
– 2 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
VOLTAGE SELECTION
SPECIFICATIONS
General
Power source: AC 110-127 V/220-240 V,
50/60 Hz
DC 15 V [“D” size
(UM/SUM-1, R20 or HP-2)
battery × 10]
Power consumption: 33 W
Output power: MPO (Max.); 50 W (25 W +
25 W)
(AC operation)
RMS; 25 W (12.5 W + 12.5 W)
(DC operation, 10 % T.H.D.)
Input terminal: Mixing microphone; 1 mV/600 ohms
CD/LINE; 350 mV/47 kohms
Output terminal: Headphones; 16-50 ohms
(recommended; 32 ohms)
Dimensions: Width; 282 mm (11-1/8")
Height; 217 mm (8-9/16")
Depth; 207 mm (8-1/8")
Weight: 3.5 kg (7.7 lbs.) without batter-
ies
Radio section
Frequency range: FM; 88 - 108 MHz
SW1; 2.3 - 7.3 MHz
SW2; 7.3 - 22 MHz
MW; 526.5 - 1,606.5 kHz
Tape recorder section
Frequency response: 60 - 12,000 Hz (Normal tape)
Signal/noise ratio: 40 dB (TAPE 1, recording/playback)
50 dB (TAPE 2, playback)
Wow and flutter: 0.3 % (WRMS)
Motor: DC 9 V electric governor
Bias system: AC bias
Erase system: Magnet erase
Speaker section
Speakers:
7.5 cm (3") woofer × 1
9 cm (3-9/16") woofer × 1
Super tweeter × 1
5 cm (2") tweeter × 1
Maximum input power: 25 W
Rated input power: 12.5 W
Impedance: 8 ohms
Dimensions: Width; 235 mm (9-1/4")
Height; 235 mm (9-1/4")
Depth; 192 mm (7-9/16")
Weight: 2.0 kg (4.4 lbs.)/each
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).
Specifications for this model are subject to change without
prior notice.
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
QACCA0004AW00
QACCE0007AW00
QPLGA0003AWZZ QPLGA0004AWZZ
WF-2100W
– 3 –
NAMES OF PARTS
1
9
13
14
15
16
10
11
12
17 18 19 20 21
23 24 25 26 27
22
245678
28 29 30
31
32
33
34
36
37
38
39
40
35
1. Function Selector Switch
2. Power/(TAPE 2) Play Direction Indicators
3. Dubbing Speed/Built-in Microphone/FM Mode Switch
4. Graphic Equalizer Controls
5. Volume Control
6. Surround Switch (with Indicator)
7. Fine Tuning Control
8. Tuning Control
9. Built-in Microphone
10. Extra Bass Control
11. Headphone Socket
12. (TAPE 1) Cassette Compartment
13. FM Stereo Indicator
14. Band Selector Switch
15. Mixing Microphone Socket
16. (TAPE 2) Cassette Compartment
17. (TAPE 1) Record Button
18. (TAPE 1) Play Button
19. (TAPE 1) Rewind Button
20. (TAPE 1) Fast Forward Button
21. (TAPE 1) Stop/Eject Button
22. (TAPE 1) Pause Button
23. (TAPE 2) Reverse Mode Switch
24. (TAPE 2) Play Button
25. (TAPE 2) Fast Wind Buttons
26. (TAPE 2) Stop/Eject Button
27. (TAPE 2) Direction Switch
28. FM/SW Telescopic Rod Aerial
29. CD/Line Input Sockets
30. Beat Cancel Switch
31. Speaker Terminals
32. AC Voltage Selector
33. AC Power Input Socket
34. Battery Compartment
35. Woofer
36. Super Tweeter
37. Tweeter
38. Bass Reflex Duct
39. Speaker Release Lever
40. Speaker Wire
3
WF-2100W
– 4 –
DISASSEMBLY
Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take cassette tape out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit and remove
the batteries from the unit.
3. Take off nylon bands or wire holders where they need
to be removed when disassembling the unit. After
servicing the unit, be sure to rearrange the leads where
they were before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
STEP REMOVAL PROCEDURE FIGURE
1 Front Cabinet/ 1. Screw .................. (A1) x9 4-1
Rear Cabinet 2. Socket ................. (A2) x1 4-3
3. Screw .................. (A3) x1
2 Main PWB/ 1. Knob.................... (B1) x1 4-2
Graphic Equalizer 2. Screw .................. (B2) x7
PWB/Fine Tuning 3. Socket ................. (B3) x4
PWB 4. Mic ...................... (B4) x1
3 Tape Mechanism 1. Open the cassette holder. 4-2
2. Screw .................. (C1) x5
4 Power PWB 1. Screw .................. (D1) x1 4-3
Figure 4-4
Figure 4-2
Figure 4-1
Figure 4-3
STEP REMOVAL PROCEDURE FIGURE
1 Woofer 1. Screw .................. (A1) x5 4-4
2. Front Panel ......... (A2) x1
3. Screw .................. (A3) x8
2 Tweeter 1. Screw .................. (B1) x2 4-4
MAIN UNIT
SPEAKER UNIT
Front
Cabinet
(A1)x1
ø3x8mm
Rear
Cabinet
(A1)x2
ø3x14mm
(A1)x1
ø3x8mm
(A1)x3
ø3x14mm
(A1)x1
ø3x30mm
(A1)x1
ø3x14mm
Front Cabinet
Washer
Nut
(B1)x1
(B2)x1
ø3x10mm
(B2)x4
ø3x8mm
(B2)x2
ø2.6x8mm
(C1)x5
ø3x10mm
Tape
Mechanism
(B3)x4
Cassette
Holder
Open
Graphic
Equalizer PWB
Fine Tuning PWB
(B4)x1
Main PWB
Rear
Cabinet
Power
Transformer
Power PWB
(D1)x1
ø3x8mm
(A3)x1
ø3x6mm
(A2)x1
Rod Antenna
Spring
Speaker
Release
Lever
Speaker Cord
Holder
Speaker
Cord
Driver
(A2)x1
Woofer
Woofer
Tweeter
(A3)x4
ø3x8mm
(A3)x4
ø3x8mm
(B1)x2
ø3x8mm
(A1)x5
ø4x16mm
Main Unit
Speaker Box
MAIN UNIT SPEAKER UNIT
WF-2100W
– 5 –
REMOVING AND REINSTALLING THE MAIN PARTS
Figure 5-5
Figure 5-4
Record/Playback
Head
Erase
Head
(A1)x1
ø2x3mm
(A1)x1
ø2x7mm
Hook
(A2)x2
TAPE 1
TAPE 2
(B1)x1
ø2x6mm
(B1)x1
ø2x6mm
Playback
Head
Pinch Roller
(C2)x1
TAPE 2
Pinch Roller
Pawl
Pinch Roller
(C1)x1
Pinch Roller
Pawl
TAPE 1
<A>
<B>
<A>
<B>
Figure 5-1
Figure 5-2
Figure 5-3
Motor
(D2)x3
Special Screw
Motor
Bracket
(D1)x2
ø2x4mm
(D1)x2
ø2x4mm
Motor
Motor
Bracket
TAPE 2
TAPE 1
TAPE 2
Main Belt
(F1)x1
TAPE 1
Main Belt
(E1)x1
Motor
Motor
REW/FF
Clutch Ass'y
REW/FF
Clutch Ass'y
Main
Belt
(E1)x1
Main
Belt
(F1)x1
REW/FF
Belt
(F2)x1
REW/FF
Belt
(E2)x1
TAPE MECHANISM SECTION
Perform steps 1, 2 and 3 of the disassembly method to
remove the tape mechanism. (See page 4.)
How to remove the record/playback and erase
heads (TAPE 1) (See Fig. 5-1)
1. When you remove the screws (A1) x 2 pcs., the recording/
playback head can be removed.
2. Move the hooks (A2) x 2 pcs., toward the center position as
shown in Fig. 5-1 and then lift the erase head.
How to remove the playback head (TAPE 2)
(See Fig. 5-2)
1. When you remove the screws (B1) x 2 pcs., the playback
head can be removed.
How to remove the pinch roller (TAPE 1/2)
(See Fig. 5-3)
1. Carefully bend the pinch roller pawl in the direction of the
arrow <A>, and remove the pinch roller (C1) x 1 pc. and
(C2) x 1 pc., in the direction of the arrow <B>.
Note:
When installing the pinch roller, pay attention to the spring
mounting position.
How to remove the motor (See Fig. 5-4)
1. Remove the belt.
2. Remove the screws (D1) x 4 pcs., to remove the motor
bracket.
3. Remove the screws (D2) x 3 pcs., to remove the motor.
How to remove the belt (TAPE 1)
(See Fig. 5-5)
1. Remove the main belt (E1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (E2) x 1 pc.
How to remove the belt (TAPE 2)
(See Fig. 5-5)
1. Remove the main belt (F1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (F2) x 1 pc.
WF-2100W
– 6 –
FM IF T108 Input: FM Antenna
FM Detection T106
Output: Pin 9 of IC102
FM Band fL: L101 Input: Antenna
Coverage fH: TC1 Output: Headphones
Socket
FM Tracking fL (88.0 MHz): L102
(Load resistance: 32 ohms)
fH (108 MHz): TC2
ADJUSTMENT
Specified Value
MECHANISM SECTION
• Driving Force Check
Specified Value
• Torque Check
• Head Azimuth
MTT-114 Headphones Socket
(Load resistance: 32 ohms)
Instrument Connection
• Tape Speed (Normal only)
Instrument
Connection
MTT-111 Tape 1, Tape 2: 3,000 ± 60 Hz Headphones
VR501 Socket
(Load resistance:
32 ohms)
Torque Meter
Torque Meter
Test Tape
Test Tape
• Playback Amplifier Sensitivity Check
Play: TW-2412 Tape 1: Over 60 g
Tape 2: Over 50 g
Tape 1 Tape 2
Adjustment
Point
Specified
Value
Specified value Instrument Connection
MTT-118 2.5 V ± 3 dB Speaker terminal
(Load resistance: 8 ohms)
Test tape
Figure 6 VCO FREQUENCY TEST CIRCUIT
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
Specified value Instrument Connection
VR102 76 kHz ± 200 Hz Pin 13, Pin 21 and ground
of IC102
Adjustment
Point
• VCO Frequency
Note:
After preparing the test circuit shown in Fig. 6, connect the Pin
13, Pin 21 and ground of the IC102 with the test circuit, and
measure the value.
Specified Value/
Adjusting Point
Test Stage
Instrument
Connection
Test Stage
Specified Value/
Adjusting Point
Instrument
Connection
AM IF T107 Input: Antenna
Output: Pin 9 of IC102
MW Band fL: T103 Input: Antenna
Coverage fH: TC3 Output: Headphones
Socket
MW Tracking fL (600 kHz): L103
(Load resistance 32 ohms)
fH (1,400 kHz): TC4
SW1 Band fL (2.3 MHz): T104
Coverage fH (7.3 MHz): CT102
SW1 fL (2.6 MHz): T101
Tracking fH (6 MHz): CT104
SW2 Band fL (7.3 MHz): T105
Coverage fH (22 MHz): CT101
SW2 fL (8.5 MHz): T102
Tracking fH (19 MHz): CT103
10 pF
1 Mohm
10 kohm
TO FREQUENCY
COUNTER
Pin 13 of IC102
Pin 21 of IC102
FET: 2SK212
(or Other 2SK Type FET.)
G
D
S
0.1 µF
Specified Value
Beat Cancel A: 100 ± 4 kHz
B: 94 ± 4 kHz
C: 104 ± 4 kHz
T201 100 kHz + 4 kHz Pin 5 of CON202
Adjustment Point Specified value Instrument
Connection
DECK SECTION
• Bias Oscillation
• FM IF/RF
Play: TW-2111 30 to 70 g.cm 27 to 60 g.cm
Fast Forward: TW-2231 Over 55 g.cm 55 to 120 g.cm
Rewind: TW-2231 Over 55 g.cm 55 to 120 g.cm
• AM IF/RF
• Beat Cancel Switch: A
WF-2100W
– 7 –
Figure 7 ADJUSTMENT POINTS
FM DET.
VCO
CT101
CT102
CT103
CT104
fH fL
SW2 BAND
COVERAGE
fH
fH
fL
fL
FM
TRACKING
SW2
TRACKING
MW
TRACKING fL
MW
TRACKING fH
fL
fH
fH
fL
SW1
TRACKING
MAIN PWB
fHfL
FM BAND
COVERAGE
MW BAND
COVERAGE fL
MW BAND
COVERAGE fH
SW1 BAND
COVERAGE
VR102
IC102
T106
T105
T103
T102
T101
T104
TC2
TC1
TC3
TC4
L102
L101
L103
T107
T108
AM IF
FM IF
13
21
9
MAIN PWB
SW202
T201
VR501
BIAS
OSC.
TAPE
SPEED
WF-2100W
– 8 –
NOTES ON SCHEMATIC DIAGRAM
• Resistor:
To differentiate the units of resistors, The 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 an ohm resistor. The resistor designated “Fusible” is a
fuse type resistor.
• 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),(RH),(UJ): Temperature compensation
(ML): Mylar type
(S): Styrol type
• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the
chassis with no signal given.
• 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.
SW1 TAPE 2 DIRECTION A—B
SW2 TAPE 1 PLAY ON—OFF
SW3 TAPE 1 FF/REW ON—OFF
SW4 TAPE 1 REC ON—OFF
SW5 TAPE 2 PLAY ON—OFF
SW6 TAPE 2 FF/REW ON—OFF
SW101 BAND SELECTOR SW2—SW1—MW—FM
SW202 BEAT CANCEL A—B
SW203 DUBBING SPEED/MIC/ HIGH—NORMAL—MIC/
FM MODE
FM STEREO—FM MONO
SW401 SURROUND ON—OFF
SW501 FUNCTION SELECTOR/ CD/LINE—RADIO—
POWER TAPE/STAND-BY—ON
SW601 VOLTAGE SELECTOR
110-127 V—220-240 V
REF. NO.
DESCRIPTION
POSITION
FITTING OF DIAL POINTER
A
B
C
Figure 8-1
1. Remove the Main PWB, the Graphic Equalizer PWB and
the Fine Tuning PWB. (See Figure 4-2 in the "Disassembly" on page 4.)
2. Remove the dial pointer guide and PWB.
3. Insert the dial pointer from , lead it under , hang it on
the tuner gear and then pass it through .
4. Replace the Main PWB, the Graphic Equalizer PWB and
the Fine Tuning PWB.
5. Rotate the tuning knob in the arrow direction until it stops.
(Set the tuner variable capacitor to "0" point (F-LOW
state).)
6. Adjust the dial pointer so that its stopper becomes the
Figure 8-2 position. (Adjust the engagement of the pointer
gear and the tuner gear to get the minimum space between
the PWB and the stopper.) This position is the "0" point.
7. Screw up the PWB and the dial pointer guide.
Figure 8-2
Tuning Knob
Front Cabinet
C
A
Dial Pointer(207)
Tuner
Gear
PWB
Dial Pointer Guide
(256)
Main PWB
Graphic Equalizer
PWB
Fine Tuning
PWB
Screw(605)
ø3x8mm
B
Dial Pointer(207)
"0" Point
Tuner Gear
Stopper
Main PWB
Variable Capacitor
Dial Pointer
PWB
Make the minimum space.
Front Cabinet
Pointer Gear
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