Sharp WF-1000W User manual

WF-1000W
– 1 –
CONTENTS Page
SPECIFICATIONS ...............................................................................................................................................................2
VOLTAGE SELECTION.......................................................................................................................................................2
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ...................................................................................................2
NAMES OF PARTS .............................................................................................................................................................3
FITTING OF DIAL POINTER ...............................................................................................................................................4
DISASSEMBLY....................................................................................................................................................................5
ADJUSTMENT .....................................................................................................................................................................6
NOTES ON SCHEMATIC DIAGRAM ..................................................................................................................................7
TYPES OF TRANSISTOR AND LED...................................................................................................................................7
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD.................................................................................................8
PARTS GUIDE / EXPLODED VIEW
WF-1000W(BK)
WF-1000W(S)
SERVICE MANUAL
SHARP CORPORATION
No. S0957WF1000WK
• In the interests of user-safety the set should be restored to its original
condition and only parts identical to those specified should be used.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

WF-1000W
– 2 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
QACCE0007AW00
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
QACCA0001SJ00
QPLGA0253AFZZ
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 AC power supply socket to the visible indication of the side of your local voltage.
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: 28 W
Output power: PMPO; 200 W (total)
(AC operation)
MPO; 50 W (25 W + 25 W)
(AC operation, 10 % T.H.D.)
RMS; 25 W (12.5 W + 12.5
W)
(DC operation, 10 % T.H.D.)
Input terminal: Mixing microphone;
600 ohms
CD/LINE; 350 mV/47 kohms
Output terminal: Headphones; 16-50 ohms
(recommended; 32 ohms)
Dimensions: Width; 300 mm (11-13/16")
Height; 240 mm (9-1/2")
Depth; 220 mm (8-11/16")
Weight: 3.8 kg (8.4 lbs.) without bat-
teries
●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)
55 dB (TAPE 2, playback)
Wow and flutter: 0.15 % (WRMS)
Motor: DC 9 V electric governor
Bias system: AC bias
Erase system: Magnet erase
●Speaker section
Type: 2-way type
Speakers: 12 cm (4-3/4") free-edge speaker ×2
Tweeter ×2
Impedance: 8 ohms
Dimensions: Width; 235 mm (9-1/4")
Height; 262 mm (10-5/16")
Depth; 220 mm (8-11/16")
Wei
g
ht: 1.8 k
g
(
4.0 lbs.
)
/each
Specificationsfor thismodel aresubject tochange without
prior notice.

WF-1000W
– 3 –
NAMES OF PARTS
11. Graphic Equalizer Controls
12. Power Indicator
13. Volume Control
14. FM Stereo Indicator
15. Fine Tuning Control
16. Built-in Microphone
17. Mixing Microphone Socket
18. Headphone Socket
19. Function Selector Switch
10. (TAPE 1) Cassette Compartment
11. Tuning Control
12. Extra Bass Switch
13. Band Selector Switch
14. Dubbing Speed/Built-in Microphone/FM Mode Switch
15. (TAPE 2) Cassette Compartment
16. (TAPE 1) Record Button
17. (TAPE 1) Play Button
18. (TAPE 1) Rewind Button
19. (TAPE 1) Fast Forward Button
20. (TAPE 1) Stop/Eject Button
21. (TAPE 1) Pause Button
22. (TAPE 2) Play Button
23. (TAPE 2) Rewind Button
24. (TAPE 2) Fast Forward Button
25. (TAPE 2) Stop/Eject Button
26. FM/SW Telescopic Rod Aerial
27. CD/Line Input Sockets
28. Beat Cancel Switch
29. Speaker Terminals
30. AC Voltage Selector
31. AC Power Input Socket
32. Battery Compartment
33. Tweeter
34. Bass Reflex Duct
35. Woofer
36. Speaker Release Lever
37. Speaker Wire
12 4 5
11
12
13
14
15
25
2423
22
21
2019
18
17
16
10
9
8
7
6
3
26 27 28
29
30
31
32
33
34
35 37
36

WF-1000W
– 4 –
FITTING OF DIAL POINTER
Figure 4-1
AB
C
1. Remove the Main PWB, the Graphic Equalizer PWB, the
Volume PWB and the Fine Tuning PWB. (See Figure 5-2
in the "Disassembly" on page 5.)
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, the
Volume 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 4-2 position. (Adjust the engagement of the pointer
gearandthetunergeartogettheminimumspacebetween
the PWB and the stopper.) This position is the "0" point.
7. Screw up the PWB and the dial pointer guide.
Fine Tuning
PWB
Dial Pointer(211)
"0" Point
Dial Pointer(211)
Tuner
Gear
Tuning Knob
Front Cabinet
PWB
Dial Pointer Guide
(218)
Screw(601)
ø3x10mm
Main PWB
Volume PWB
Graphic Equalizer
PWB
A
B
C
Figure 4-2
Tuner Gear
Stopper
Main PWB
Variable Capacitor
Dial Pointer
PWB
Make the minimum space.
Front Cabinet
Pointer Gear

WF-1000W
– 5 –
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
outletbeforestartingtodisassembletheunitandremove
the batteries from the unit.
3. Take off nylon bands or wire holders where they need
to be removed when disassembling the unit. After
servicingthe unit,be suretorearrangetheleads 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. Battery Compartment Lid. 5-1
Rear Cabinet ................................. (A1)x1
2. Screw ................... (A2)x3
3. Screw ................... (A3)x4
4. Socket .................. (A4)x1
2 Main PWB/ 1. Knob..................... (B1)x1 5-2
Graphic Equalizer 2. Socket .................. (B2)x3
PWB/ 3. Screw ................... (B3)x5
Volume PWB/ 4. Screw ................... (B4)x2
Fine Tuning PWB 5. Mic ....................... (B5)x1
3 Tape mechanism 1. Open the cassette holder. 5-2
2. Screw ................... (C1)x6
4 Power PWB/ 1. Screw ................... (D1)x3 5-3
Terminal A PWB/ 2. Screw ................... (D2)x2
Terminal B PWB 3. Bracket................. (D3)x1
4. Screw ................... (D4)x2
5. Hook..................... (D5)x2
Figure 5-4
Figure 5-2
Figure 5-1
Figure 5-3
STEP REMOVAL PROCEDURE FIGURE
1 Speaker 1. Screw ................... (E1)x5 5-4
2. Front Panel .......... (E2)x1
3. Screw ................... (E3)x4
MAIN UNIT
SPEAKER UNIT
(A1)x1
(A4)x1
Front
Cabinet
Rear
Cabinet
(A2)x1
ø3x6mm
(A2)x1
ø3x6mm
(A3)x4
ø3x20mm
(A2)x1
ø3x10mm
Main PWB
Rear Cabinet
(D1)x3
ø3x10mm
(D2)x2
ø4x16mm
(D4)x2
ø3x10mm
Power
Transformer
Voltage Selector
AC Socket
(D3)x1
Power
PWB
Terminal B
PWB Terminal A
PWB
(D5)x2
(E3)x4
ø3x10mm
(E1)x5
ø4x16mm
Speaker Box
Main Unit
Speaker
Release
Lever
Speaker Cord
Holder Speaker
Cord
Driver
Woofer
Tweeter
Front Panel
(E2)x1
Front Cabinet Washer
Nat (B1)x1
(B4)x2
ø3x10mm
(C1)x4
ø3x10mm
(B3)x5
ø3x10mm (C1)x2
ø3x10mm Tape
Mechanism
(B5)x1
(B2)x3
Cassette
Holder
(Left/Right)
Open
Fine Tuning PWB Volume
PWB Graphic
Equalizer PWB
Main PWB

WF-1000W
– 6 –
ADJUSTMENT
Specified Value
MECHANISM SECTION
• Driving Force Check
Specified Value
• Torque Check
Play: TW-2111 30 to 70 g.cm 30 to 70 g.cm
Fast Forward: TW-2231 Over 55 g.cm Over 55 g.cm
Rewind: TW-2231 Over 55 g.cm Over 55 g.cm
• Head Azimuth
MTT-114 Headphones Socket
(Load resistance: 32 ohms)
Instrument Connection
• Tape Speed (Normal only)
Instrument
Connection
MTT-111 Tape 1,2:VR102 3,000 ±60 Hz Headphones
Socket
(Loadresistance:
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 60 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-renge frequency
Specified value Instrument Connection
VR1 76 kHz ±200 Hz Pin 13, Pin 21 and ground
of IC2
Adjustment
Point
• VCO Frequency
Note:
AfterpreparingthetestcircuitshowninFig.6,connectthePin
13, Pin 21 and ground of the IC2 with the test circuit, and
measure the value.
• FM IF/RF
Specified Value/
Adjusting
Point
Test Stage
FM IF L9 Input: FM Antenna
FM Detection L10 Output:Pin 9 of IC2
FM Band fL: L1 Input: Antenna
Coverage fH: TC1 Output: Headphone Socket
FM Tracking fL(88.0 MHz): L2 (Load resistance:
fH(108 MHz): TC2 32 ohms)
Instrument
Connection
• AM IF/RF
Test Stage Specified Value/
Adjusting
Point
Instrument
Connection
AM IF L11
MW Band fL: L6
Coverage fH: TC3
MW Tracking fL(600 kHz): L3
fH(1,400 kHz):TC4
SW1 Band fL(2.3 MHz): L7
Coverage fH(7.3 MHz): TC5
SW1 fL(2.6 MHz): L4
Tracking fH(6 MHz): TC6
SW2 Band fL(7.3 MHz): L8
Coverage fH(22 MHz): TC7
SW2 fL(8.5 MHz): L5
Tracking fH(19 MHz): TC8
Input: Antenna
Output: Pin 9 of IC2
Input: Antenna
Output: Headphone Socket
(Load resistance
32 ohms)
10 pF
1M ohm 10K ohm TO FREQUENCY
COUNTER
Pin 13 of IC2 Pin 21 of IC2
FET: 2SK212
(or Other 2SK Type FET.)
GD
S
0.1 µF
Specified Value
Beat Cancel A: 104 ±4 kHz
B: 94 ±4 kHz
C: 100 ±4 kHz
DECK SECTION
• Bias Oscillation
• Beat Cancel Switch: C
L301 100 kHz + 4 kHz Pin 1 of CNS102
Adjustment Point Specified value Instrument
Connection

WF-1000W
– 7 –
Figure 7-1 ADJUSTMENT POINTS
NOTES ON SCHEMATIC DIAGRAM
• Resistor:
Todifferentiate the unitsof resistors, Thesymbol asKand
Mareused:thesymbolKmeans1000ohmandthesymbol
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
• Theindicated voltage ineach sectionisthe onemeasured
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
modelare subjecttochange forimprovement withoutprior
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.
DESCRIPTION POSITION
SW1 BAND SELECTOR FM
SW101 RECORD/PLAYBACK PLAYBACK
SW102 BEAT CANCEL A
SW103 DUBBING SPEED/MIC/ MIC/FM MONO
FM MODE
SW401 X-BASS ON
SW501 FUNCTION SELECTOR CD/LINE
SW501A TAPE 2 MAIN OFF
SW502 TAPE 1 MAIN OFF
SW503 TAPE 2 PLAY OFF
SW601 VOLTAGE SELECTOR AC220-240V
REF. NO.
Figure 7-2 TYPES OF TRANSISTOR AND LED
333ID
VIEW
FRONT
KTA1271 Y
KTC3199 GR
KTC3203 Y
VIEW
FRONT
E B C
SW401
CF2
IC2
TC6
SW1
TC5
SW103
L7
TC7
L1
L2
L8
L6
L5
TC8
L9
L11
CF3
IC1
CF1
IC501
CNP103
IC502
VR102
VR1 L10
CNP501
SPEAKER TERMINALS
1
24
12
SW1
TRACKING fH
TC1
TC2
TC3
TC4
MW
TRACKING fH
MW BAND
COVERAGE fH
FM TRACKING
fH
FM BAND
COVERAGE
fH
fL
SW2
TRACKING
fH
fL
L4
L3
SW1
TRACKING fL
MW
TRACKING fL
FM
TRACKING fL
AM IF FM IF
FM DETECTION
VCO
SW1 BAND
COVERAGE fH
fL
SW2 BAND
COVERAGE fH
fL
MW BAND
COVERAGE fL
TAPE SPEED
MAIN PWB
9
21
13
L301
SW102
BIAS OSCILLATION

WF-1000W
– 8 –
• NOTES ON SCHEMATIC DIAGRAM can be found on page 7.
A
B
C
D
E
F
G
H
1234 5 6
Figure 8 SCHEMATIC DIAGRAM (1/2)
D162
DS1SS133
R177
1K
D159
DS1SS133
C136
0.0027
(ML)
C135
0.0027
(ML) R111
22K
C43
220P
TC3
TC5
TC7
C20
1500P
(P.P)
C27
0.0047
(P.P)
R10
47
R11
47
SW1-G
BAND
SELECTOR
C30
0.022 R13
100
SW1-H
BAND
SELECTOR
C42
0.022
C21
5P
(UJ)
C26
0.022
R182
1K
SW501-C
FUNCTION
SELECTOR
SW501-B
FUNCTION
SELECTOR
R181
1K
SW501-A
FUNCTION
SELECTOR
C153
0.01
(ML)
R151
2.2K
C152
10/16
R152
560
C155
1/50
C154
10/16
R153
220K
C151
0.33/50
R3
47
C9
0.022
D2 DS1SS133
C2
5P(CH)
IC1 TA7358AP
1
C12
3P(CH)
C10
15P(CH)
L1 TC1
VC1
R2
33
C13
0.022
R4
330K R7
820K
C22
0.022
C23 220/10
C24
0.022
C25
0.022
C29 22/16
C39
1/50
C41
1/50
C40
1/50
R12
1K
CF2
10.7MHz
L11
CF3
455kHz
R18
2.7K
R17
2.7K
IC2
FM/AM IF MPX. LA1805
SW103-B
FM MODE
VR1
10K(B)
C18
10/16 C17
0.022
R5
100 R19
15K
TP1
VCO
76kHz
R14
100K
C34
470P
C36
1500P
(P.P)
C35
3.3/50
C33
3.3/50
C31
0.0047
(ML)
R9
12K
L10
R15
10K R16
10K
C37
0.012
(ML)
C38
0.012
(ML)
R20
10
C182
1/50
C181
1/50
R184
330K
R183
330K
C158
4.7/50 C159
4.7/50
D155 DS1SS133
D156 DS1SS133
D158
DS1SS133
D153 DS1SS133
D154 DS1SS133
R301
100
R134
82K
R133
82K
R129
22K
R130
22K
R112
22K
R127
47K
R128
47K
R174
22K
R173
10K
Q156 KTC3199 GR
SW103
DUBBING SPEED/
MIC
R172
10K
D152
DS1SS133
D151
DS1SS133
R166
560
R167
10K
R169
10K
R168
10K
Q153 KTC3199 GR
C156
47/16
R157
47K
R162
47K R160
4.7K
J151
MIC
IN
R155
39K
C157
1/50
Q152
KTC3199 GR
Q151
KTC3199 GR
MIC AMP.
R156
1K
R161
330
R511
10K
VC3
TC9
R154
560
SW102
BEAT
CANCEL
C307
150P C306
390P
C304
0.022 C302
0.0022
(ML)
R304 10
C301 100/16
R303
100
C116
4.7/50
SO351
CD/LINE
R131
4.7K
R132
4.7K
C14
5P(CH)
C19
300P
(P.P)
SW1-E
BAND
SELECTOR
VC2
TC2
CF1
FM BAND PASS
FILTER
R1
10
C6
0.0047 C8
0.022
L2
C7
0.0047
C5
0.001
SW1-D
BAND SELECTOR
VC4
TC4
SW1-B
BAND
SELECTOR
L4
L3
SW1-C
BAND
SELECTOR
TC6
L5
TC8
C15
0.022
C4
24P
(CH)
C126
4.7/50
L103
22mH
C131
120P
R135
15K
D101
DS1SS133 R100
150 C160
22/16
R353
2.2K
R354
2.2K
R351
47K
R352
47K
D1
DS1SS133
SW1-A
BAND
SELECTOR
C130
22/16
CNP101
3
2
1
CNP102
4
3
2
1
IC101
RECORD/PLAYBACK AMP. TA8189N
C133 150P
C134
150P
C108
330P
C110
10/16 R108
5.6K
C106
330P C112
0.033
(ML)
C102
470P C104
820P
R106
180K
R104
56K
R102
56
R110
4.7K
C114
4.7/50
R103
56K
C101
470P
C105
330P
C103 820P
R107
5.6K
C111
0.033
(ML)
R105
180K
R109
4.7K
C109 10/16
C113
4.7/50
C107
330P
R136
15K
C132
120P
L104
22mH
R121 10K
R101 56
C115
4.7/50
C127 1000/10
C128
2.2/50
C121
330P
R115
2.2K R117
330K
C117
10/16
C119
0.015
(ML)
C123
0.0015
L101
2.7mH
C125
4.7/50
R114
180K
R116
2.2K
C122
330P
R118
330K C120
0.015
(ML)
C118
10/16 R120
390
C124
0.0015
R122
10K
C129
22/16
R123
10K
R124
10K
R125 1M
C305
0.0015
(ML)
L301
R306
47 R305
27K
Q301
KTC3203 Y
C303
0.0056
(ML)
R302
100
R113
180K
L102
2.7mH
R119
390
L9
L6
L7
L8
SW101-F
RECORD/PLAYBACK
SW101-A
SW101-B SW101-C
SW101-D
SW101-E
RECORD/
PLAYBACK
NC
A
SW1
MW
L3,L4: MW/SW1
BAR ANTENNA
R-CH
L-CH
R-CH
ERASE HEAD
PLAYBACK HEAD
TAPE2
RECORD/
PLAYBACK HEAD
TAPE1
L-CH
FM FRONT END
FINE
TUNING
IF AD
TAPE
SW2 ANTENNA
MW
SW2
CNS102 CNS101
FM
SW1
SW2
MW
FM
MPX
IN
DET OUT
IF AD
AM IN
AM IF
AM OUT
FM DET
AM MIX
AM RF
OSC
AM
FM/SW
ROD
ANTENNA
CONDENSER
MIC
FM STEREO FM MONO
MIC151
BUILT-IN
MICROPHONE
SW2 OSC.
SW1 OSC.
CD/LINE
TAPE
TAPE
TUNER
TUNER
CD/LINE
MIC
NORMAL
HIGH
TUNER
CD/LINE
FM
SW2
SW2
SW2
SW2
SW2
SW1
SW1
SW1
SW1
SW1
SW1
MW
MW
MW
MW
MW
SW2
SW1
R
P
GND
ALC
REC IN
REC
NF
REC
OUT
REC IN
REC NF
REC
M/N
GND1
VCC
MIX
A/B
PRE
PRE OUT
OUT
OUT
OUT
OUT
OUT
MATAL
MATAL
NF
NFCH2/BCH2/A
CH1/B
CH1/A
R
P
R
FM
TRACKING
MW OSC.
FM
FM
FM
FM
MW
FM
R
R
P
P
P
FM OSC.
FM
DETECTION
MIX
RF AMP
OSC
L-CH R-CH
FM IF
IN AGC GND AM/FM
VCO
MO/ST
+B
STB
2
4
3
1
21 20 19 18 17 16 15 14 13
12
11
10
9
8
7
6
5
4321
98
7
65
432
24 23 22 21
11
10
9
8
7
6
5
4
321
C11
22P
(CH)
C32
0.0082
(ML)
R8
3.9K
20 19 18 17 16 15 14 13 12
22
2324
R P
L-CH
R-CH
B
C
IC1 TA7358AP
SW101
RECORD/
PLAYBACK
SW103-A
SW1-F
BAND
SELECTOR
FM IF AM IF
BIAS OSC.
123
FM SIGNAL MW/SW1/SW2 SIGNAL PLAYBACK SIGNAL RECORD SIGNAL
FM IF
AM IF
VCO
+B
1
2
31
2
3
MIC AMP.
MIC AMP.
LINE AMP.
BIAS OSC.
+B
+B
+B
MAIN PWB-A1/VOLUME PWB-A3/FINE TUNING PWB-A4
0V
1.3V
0.6V
1.3V
3.2V
0.7V
0V(0V)
OTHER:NORMAL
( ): HIGH
0V(3.4V) 0V(0V)
(0.1V)
(5.5V)
(0.7V)
0.7V
1.5V 5.8V 1.4V
0V
5.8V
5.0V
5.7V
5.8V
+B
+B
+B
+B
+B
+B
L-CH
R-CH
2
3
1
(0.6V)
(0V)
0V
( ): RECORD
( ): RECORD
IC101 : VOLTAGE
PIN
PLAY
REC
0V
0V 0V 0V 1.3V 1.3V 1.3V 1.3V 1.4V 1.4V 1.4V 1.4V 0V 0V 0V 0V 2.1V 2.1V 1.3V 1.3V 0V 0V 0V 0V
123456789101112
0.9V
0.9V 0V 0V 1.3V 1.3V 2.1V 2.1V 1.4V 1.5V 5.2V 5.2V 2.1V 0V 1.4V 1.4V 1.3V 1.3V 1.3V 1.3V 0V 0V 0V 0V
13 14 15 16 17 18 19 20 21 22 23 24
PIN
PLAY
REC

WF-1000W
– 9 –
Figure 9 SCHEMATIC DIAGRAM (2/2)
78 9101112
R212 1K
R211 1K
R442 15K
R441
15K
R206
10K C204
1/50
R204
2.2K
VR205-B
100K(B)
(10kHz)
VR204-B
100K(B)
(2kHz)
VR203-B
100K(B)
(500Hz)
R205
10K
R209 100K
VR205-A
100K(B)
(10kHz)
VR204-A
100K(B)
(2kHz)
VR203-A
100K(B)
(500Hz)
R203
2.2K C203
1/50
R210 100K
C514
1/50
IC502
C509
0.022
C508
100/16
C513
1/50
D401
DS1SS133
R431
27K C433
0.022
L501
47µH
SW501-D
FUNCTION
SELECTOR
R513
10K
182
K
C424
47/25
C510
3300/25
Q501
KTC3203 Y
C507
0.022
DZ501
DZ8.2BSB
C504
100/16
R504
680
R503
100
C502
0.022
C505
100/16 C506
0.022
IC501
VOLTAGE REGULATOR
KIA7812P
LED1
333ID
R518
1K
LED502
333ID
C221 4.7/50
C217
0.47/50 C213
0.33/50 C209
0.082
(ML)
C205
0.01
(ML)
C219 0.039(ML)
C215 0.0056(ML)
C211 0.0015(ML)
C207 470P
IC201 GRAPHIC EQUALIZER BA3822LS
C208 470P
C202
4.7/50
R202
1K
C222 4.7/50
C212 0.0015(ML)
C216 0.0056(ML)
C220 0.039(ML)
C210
0.082
(ML) C218
0.47/50
C214
0.33/50
C206
0.01
(ML)
C201
4.7/50
R201
1K
R200
330
C200 220/16
F601
T4A L
250V
C651
0.022
C653
0.022
C654
0.022
D651
TS4B03GM
C652
0.022
C180
100/16
R188
3.9K
R187
3.9K
C185
1/50
R180
560
C186
1/50
C182
1/50
C181
1/50
R184
330K
Q182
KTC3199 GR
R183
330K Q181
KTC3199 GR
C183
220P R185
220
R186
220
C184
220P
R511
10K
J401
HEADPHONES
CNP501 SPEAKER TERMINALS
+
+
C423
10/16
R437
120
R438
120
C430
10/16
C429
10/16
C426
0.1(ML) R434
2.2
R436
2.2
C428
0.1
(ML)
C427
0.1
(ML)
R435
2.2
IC402
LA4663
POWER AMP.
14
13
12
11
10
9
6
4
3
2
1
C425
0.1(ML) R433
2.2
C511
0.022
Q502
KTC3199 GR
R512
10K
R516
3.9K
Q503
KTC3199 GR
R514
100K
C512
100/16
Q504
KTA1271 Y
VR102
470 R515
47
CNP103
8
7
6
5
4
3
2
1
R418
22K
R417
22K
C420
4.7/50
C419
4.7/50
Q404 KTC3199 GR POWER MUTE
Q403 KTC3199 GR POWER MUTE
R425
1K
R426
1K
R428
4.7K
R427
4.7K
C418
22/16
R429
100K
VR401-A 50K(B)
VR401-B
50K(B)
C416
0.15
(ML)
R419
3.3K
C414
0.001
(ML)
C413
0.001
(ML)
R420
3.3K
C415
0.15
(ML)
R416
1K
R415
1K
CNP601
2
1
CNS601
2
1
SW401
X-BASS
POWER
R-CH
8 Ohm
8 Ohm
L-CH
L-CH
IC402
CNS103
SP404
TWEETER
SP403
TWEETER
SP402
WOOFER
SP401
WOOFER
SO601
AC POWER
INLET
SOCKET
AC110-127V/
AC220-240V,
50/60Hz
SW601
VOLTAGE SELECTOR
AC220V-240V
AC110V-127V
-OUT2
-OUT1
+OUT2
+OUT1
IN
OUT IN
SW502
TAPE1 MAIN
SW503
TAPE2 PLAY
A
B
BATTERYES DC15V
["D" SIZE(UM/SUM-1,
R20 or HP2)
BATTERY x 10]
M501
TAPE
MOTOR
SW501A
TAPE2 MAIN
OUT
+
- M
7
8
2
3
4
5
6
1
7
5 8
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
21
23
22
24
T601
POWER
TRANSFORMER
C503
0.022
TAPE
SPEED
R517 56K
STEREO
L-CH
R-CH
GRAPHIC EQUALIZER
GRAPHIC EQUALIZER
ON OFF
TAPE
TUNER
CD/LINE
3
1
2
GND
3
VOLTAGE
REGULATOR
KIA7809P
GND
1
2
SO601
SW1
TRACKING fH
fL TC6
L4
SW2
TRACKING fH
fL TC8
L5
SW1 BAND
COVERAGE fH
fL TC5
L7
SW2 BAND
COVERAGE fH
fL TC7
L8
MW
TRACKING fH
fL TC4
L3
MW BAND
COVERAGE fH
fL TC3
L6 FM BAND
COVERAGE fH
fL TC1
L1
L-CH
R-CH
GND
+B
FM
TRACKING fH
fL TC2
L2
VOLUME
VOLUME
POWER PWB-A7
TERMINAL B
PWB-A6 TERMINAL A
PWB-A5
GRAPHIC EQUALIZER PWB-A2
+B
+B
+B
GRAPHIC
EQUALIZER
GRAPHIC
EQUALIZER
+B
+B
+B
VOLTAGE REGULATOR
Q502~Q504:
TAPE SPEED CONTROL
+B
GND
L-CH
R-CH
0.2V
2V
0.8V
0.2V
2V
0.8V
OTHER:NORMAL
( ): HIGH
0V(0V)
0.7V(0V)
0V(0.7V)
0V(0V)
0V(7.8V)
0.7V(0V)
8.4V(8.4V)
8.4V(6.2V)
7.8V
(7.9V)
7.4V 12V
8V
9V
0V
15V
12V
0V
15V
0V
0V
0.7V
0V
0V
0.7V
4.5V
4.5V
5.1V
5.1V
4.5V
4.5V
5.1V
5.1V
4.5V
4.5V
5.1V
5.1V
4.5V
4.5V
5.1V
5.1V
3.5V
2V
2V
3.5V
2.7V
2.7V
5.5V
0V
14.2V
0V
0V
0V
6.5V
0V
15V 15V
6.9V
0V
6.9V
6.9V
0V
6.9V
IC502
IC501
R-CH
23
123
1
BI1 BI2
11
33
IC2 : VOLTAGE
PIN
FM
MW/SW1/SW2
1.6V
1.7V 1.6V 1.7V 5.8V 6.5V 0.2V 1.4V 1.6V 1.7V 0V 0V 10.7V 10.7V 0V 0V 2.4V 2.4V 2.4V 2.4V 5.1V 6.4V 0.9V 0.9V
123456789101112
1.1V
0V 2.1V 1.9V 1V 1.8V 1.8V 1.8V 1.6V 1.7V 1.6V 1.6V 0.4V 1.1V 5.8V 6.3V 5.8V 6.3V 0.5V 1.7V 1.6V 1.7V 1.4V 1.6V
13 14 15 16 17 18 19 20 21 22 23 24
PIN
FM
MW/SW1/SW2

WF-1000W
– 10 –
A
B
C
D
E
F
G
H
1234 5 6
Figure 10 WIRING SIDE OF P.W.BOARD (1/3)
M501
TAPE
MOTOR
SW503
TAPE2
PLAY
SW501A
TAPE2
MAIN
SW502
TAPE1
MAIN
AB
+-
BR
GY
GY
RD
OR
YL
GR
BL
VL
GR
1
CNS103
2
3
4
5
6
7
8
WH
CNS102
CNS101
RD
RD
WH
BK
BK
2
3
4
1
2
3
1
ERASE
HERAD
RD
WH BK
GY
GY
RECORD/PLAYBACK
HEAD
TAPE 2
TAPE 1
BR
COLOR TABLE
RD(R)
OR
YL
GR
BL
VL
GY
WH(W)
BK
PK
BROWN
RED
ORANGE
YELLOW
GREEN
BLUE
VIOLET
GRAY
WHITE
BLACK
PINK
FM/SW ROD ANTENNA (253)
C217
VR203
VR204
VR205
C206
C208 C210
C218
C214
C220 C216 C212
IC201
C200
C213
C209 C211
C219
R200
C201
C202
R202
C221
C205 C207
C203
C204
R204
R205
R203
C222
LED502
R206
R201
C215
R518
C414
C416
R420
R419
C413
C415
LED1
FW1 VR401
VOLUME
R212
TC9
FINE TUNING
PWB-A4
VOLUME
PWB-A3
GRAPHIC
EQUALIZER
PWB-A2
BK
BK
FW2
2
1
5
10
15
20
24
23
A
B
A
B
A
B
5
1
A
B
(249)
TC9
FINE TUNING
VR203
500Hz
GRAPHIC
EQUALIZER
VR204
2kHz
VR205
10kHz
RD
WH BK
PLAYBACK HEAD
R209
R210
R211
BR
RD YL
OR
GR
BL
BR
RD