Sharp WF-930Z(BK) User manual

WF-930Z
SERVICEMANUAL
SHARP CORPORATION
Page
SPECIFICATIONS ...............................................................................................................................................................2
VOLTAGE SELECTION .......................................................................................................................................................2
AC POWER SUPPLY CORD AND PLUG............................................................................................................................2
NAMES OF PARTS..............................................................................................................................................................3
FITTING OF DIAL POINTER ...............................................................................................................................................3
DISASSEMBLY ....................................................................................................................................................................4
REMOVING AND REINSTALLING THE MAIN PARTS .......................................................................................................5
ADJUSTMENT .....................................................................................................................................................................6
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD .................................................................................................8
NOTES ON SCHEMATIC DIAGRAM.................................................................................................................................12
TYPES OF TRANSISTOR AND LED .................................................................................................................................12
REPLACEMENT PARTS LIST / EXPLODED VIEW
WF-930Z(BK)
CONTENTS
No. S5630WF930Z//
• 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.
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WF-930Z
SPECIFICATIONS
I
General
Power source: AC 110 - 127/220 - 240 V, 50/60 Hz
DC12V["D"size(UM/SUM-1,R20or
HP - 2) battery x 8]
Power consumption: 30 W
Output power: PMPO; 60 W (30 W + 30 W)
(AC operation)
MPO (Max.); 20 W (10 W + 10 W)
(AC operation)
RMS; 10 W (5 W + 5 W)
(DC operation, 10 % T.H.D.)
Input terminal: Mixing microphone; 600 ohms
Output terminal: Headphones; 16 -50 ohms
(recommended; 32 ohms)
Dimensions: Width; 300 mm (11 - 13/16")
Height; 217 mm (8 - 9/16")
Depth; 186 mm (7 - 3/8")
Weight: 2.9 kg (6.4 Ibs.) without batteries
I
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
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
– 2 –
I
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 12 V electric governor
Bias system: AC bias
Erase system: Magnet erase
I
Speaker section
Type: 2 - way type
Speakers: 12 cm (4 - 3/4") free - edge
woofer x 2
Tweeter x 2
Maximum input
power: 10 W
Impedance: 3 ohms
Dimensions: Width; 195 mm (7 - 11/16")
Height; 217 mm (8 - 9/16")
Depth; 189 mm (7 - 1/2")
Weight: 1.2 kg (2.6 Ibs.)/each
Specifications for this model are subject to change without
prior notice.
VOLTAGE SELECTION
Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage as
follows: Slide the AC power supply socket to the visible indication of the side of your local voltage.
AC POWER SUPPLY CORD AND PLUG
QPLGA0250AFZZ
9FGS9822020400
9FGS9822020500
9FGS9821620000
9FGS9822020300
QPLGA0253AFZZ
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WF-930Z
NAMES OF PARTS
– 3 –
Figure 3
1. Remove the main PWB. Attach the dial pointer as shown arrow
Âonthefrontcabinet,puttingitintothesectionindicatedbyarrow
È. Insert it between the arrows Ê.
2.InstallthemainPWBinthefrontcabinetandsecureitwiththetwo
screws.
3. Turn the dial drum in the direction indicated by arrow Ë. Set the
dialpointertopoint"0",andthenmaketherestoftheadjustments.
1. Extra Bass Control: X-BASS
2. Graphic Equalizer Controls
3. FM Stereo Indicator
4. Power Indicator
5. Function Selector Switch
6. Volume Control
7. Dubbing Speed/Built-in Microphone Switch
8. Built-in Microphone
9. Tuning Control
10. Fine Tuning Control
11. Band Selector Switch
12. Headphones Socket
13. Mixing Microphone Socket
14. FM Mode Switch
15. (TAPE 1) Cassette Compartment
16. (TAPE 1) Record Button: I
17. (TAPE 1) Play Button: 0
0
18. (TAPE 1) Rewind Button: 3
3
19. (TAPE 1) Fast Forward Button: 2
20. (TAPE 1) Stop/Eject Button: ■ 7
21. (TAPE 1) Pause Button: 6
22. (TAPE 2) Play Button: 0
0
23. (TAPE 2) Rewind Button: 3
3
24. (TAPE 2) Fast Forward Button: 2
25. (TAPE 2) Stop/Eject Button: ■ 7
26. (TAPE 2) Cassette Compartment
27. CD/Line Input Sockets
28. Beat Cancel Switch
29. FM/SW Telescopic Rod Aerial
30. Speaker Terminals
31. AC Voltage Selector
32. AC Power Input Socket
33. Battery Compartment
34. Tweeter
35. Woofer
36. Speaker Release Lever
37. Speaker Wire
Dial Pointer (203)
Dial Pointer (203)
Front
Cabinet
''0''Point
Dial Drum (213)
Screw(606)
ø3 x8mm
Screw(601)
ø2 x4mm
Main PWB
Tape
Mechanism
CB
D
A
FITTING OF DIAL POINTER
27 28 29 30
31
32
33
34
35
36
37
TAPE 1 TAPE 2
123456789
10
11
12
13
14
15
161718192021 2223 24 25
26
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WF-930Z
DISASSEMBLY
– 4 –
Figure 4-1
Caution on Disassembly
Follow the below-mentioned notes when disassembling the
unitandreassemblingit,to keepitsafeandensure 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. Takeoffnylon bandsorwireholderswhere theyneedbe
removedwhendisassemblingtheunit.Afterservicingthe
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. Battery Compartment
Rear Cabinet Lid ...................(A1)x1 4-1
2. Screw ................(A2)x4
3. Screw ................(A3)x1
4. Screw ................(A4)x1
5. Screw ................(A5)x3
6. Socket ...............(A6)x1
7. Tip .....................(A7)x1
2 Main PWB/ 1. Knob .................(B1)x1 4-2
Volume PWB 2. Socket ...............(B2)x5
3. Screw ................(B3)x1
4. Screw ................(B4)x1
3 Graphic Equalizer 1. Screw ................(C1)x4 4-2
PWB
4 LED PWB 1. Screw ................(D1)x2 4-2
5 Tape Mechanism 1. Open the cassette holder 4-2
2. Screw ................(E1)x5
6 Power PWB 1. Screw ................(F1)x1 4-3
2. Bracket..............(F2)x1
STEP REMOVAL PROCEDURE FIGURE
1 Front Panel 1. Screw ................(G1)x4 4-4
2 Woofer 1. Screw ................(G2)x4 4-4
Figure 4-4 Figure 4-3
Figure 4-2
Front Cabinet Main
PWB Volume
PWB
Tape
Mechanism
Washer
Nat
(B1) x1
(D1)x2
ø3x8mm
(B4) x1
ø2 x4mm
(E1) x5
ø3x 8mm (C1) x4
ø3x8mm
(B3) x1
ø3 x8mm
(B2) x5
LED PWB
Graphic
Equalizer
PWB
Open
Cassette
Holder
(Left/Right)
Front
Cabinet
Front
Cabinet
Rear
Cabinet
(A2) x2
ø3 x10mm
(A2) x2
ø3 x10mm
(A3) x1
ø3 x14mm
(A4) x1
ø3 x28mm
(A5) x3
ø3 x8mm
(A7) x1
(A6) x1
Main
PWB
Main
PWB
(A1) x1
(G2) x4
ø3x 8mm
(G1) x4
ø3 x14mm
Tweeter
Front Panel
Speaker Box
UNIT
Woofer
Speaker Cord
Holder Speaker
Cord Driver
MAIN UNIT
SPEAKER
Rear Cabinet
(F1) x1
ø3 x8mm (F2) x1
Power
Transeformer Power PWB
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WF-930Z
REMOVING AND REINSTALLING THE MAIN PARTS
TAPE MECHANISM SECTION
Performsteps 1, 2and 5 ofthe disassemblymethodto remove
the tape mechanism. (See page 4.)
How to remove the record / playback, playback
and erase heads (See Fig. 5-1 and 5-2.)
1. Remove the screws (A1) x 2 pcs., to remove the record/
playback head.
2. Remove the hooks (A2) x 2 pcs., toward the center position
asshowninFig.5-1.andthenextracttheeraseheadupward.
3. Remove the screws (B1) x 2 pcs., to remove the playback
head.
Note:
After replacing the heads and performing the azimuth adjust-
ment, be sure to apply screwlock.
How to remove the pinch roller (See Fig. 5-3.)
1. Carefully bend the pinch roller pawl in the direction of the
arrow Â, and remove the pinch roller (C1) upwards.
How to remove the motor (See Fig. 5-4.)
1. Remove the belt.
2. Remove the screws (D1) x 6 pcs., to remove the motor
bracket.
3. Remove the screws (D2) x 3 pcs., to remove the motor.
Note:
Whenmountingthe motor,pay attentiontothe motormounting
angle.
How to remove the belts (See Fig. 5-5.)
1.Removethemainbelt (E1)x1pc.,at thetape1sidefrom the
motor pulley.
2.Removethemainbelt (E2)x1pc.,at thetape2sidefrom the
motor pulley.
3. Remove the REW/FF belt (E3) x 2 pcs., from the REW/FF
roller.
4. Put on the belts in the reverse order of removal.
Note:
When putting on the belt, ascertain that the belt is not twisted,
and clean it.
– 5 –
Figure 5-5 Figure 5-4
Figure 5-2
Figure 5-1
Figure 5-3
Pinch Roller
(C1)
Pinch Roller
Pawl
A
Record/Playback
Head
Erase
Head
(A1) x1
ø2x3mm
(A1) x1
ø2x7mm
Hook
(A2) x2
TAPE 1
Playback
Head
(B1) x1
ø2x3mm
(B1) x1
ø2x7mm
TAPE 2
TAPE 2
TAPE 1
TAPE 2
Main Bert TAPE 1
Main Bert
Moter
Moter
REW / FF
Clutch Ass'y
REW / FF
Clutch Ass'y
Main
Belt
(E1) x1
Main
Belt
(E2) x1
REW / FF
Belt
(E3) x1
REW / FF
Belt
(E3) x1
Frywheel
Frywheel
(D1) x2
ø2 x4mm
(D1) x2
ø2 x4mm
(D1) x2
ø2 x4mm
Motor
Bracket
(D2) x3
Special Screw
Motor
Bracket
Motor
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WF-930Z
ADJUSTMENT
MECHANISM SECTION
Play: TW-2412 Tape 1: Over 50g
Tape 2: Over 60 g
Torque Meter Specified Value
• Driving Force Check
Specified Value
Torque Meter
• Torque Check
Play: TW-2111 30 to 60 g.cm 30 to 60 g.cm
Fast forward: TW-2231 55 to 120 g.cm 80 to 135 g.cm
Rewind: TW-2231 55 to 120 g.cm 80 to 135 g.cm
• Head Azimuth
MTT-114 Headphones Socket
(Load resistance: 32 ohms)
Test Tape Instrument Connection
Test Tape
• Tape Speed (Normal only)
Adjusting
Point Specified
Value Instrument Connection
MTT-111 Tape 1,2: VR501 3,000 ±60 Hz Headphones
socket(Load
resistance:
32 ohms)
Specified Value
MTT-118 1.3 V ±3 dB Speaker terminal
(Load resistance: 3 ohms)
Volume control Max
Beat cancel A
Function/Power Tape/Stand-by
Dubbing speed/Built-in Microphone OFF/Mic ON
TAPE SECTION
Position of each switch or control
Specified Value
• Bias Oscillation Frequency
Test Tape
• Playback Amplifier Sensitivity Check
Beat cancel A: 100 ±4 kHz
B: 94 ±4 kHz
C: 104 ±4 kHz
– 6 –
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Specified
Value/Adjusting
Point
Test Stage Instrument
Connection
IF T3 Input: Antenna
Output: Pin 3 of IC2
MW Band fL: L6
Coverage fH: TC8
MW Tracking fL (600 kHz):
L3 (MW)
fH (1,400 kHz):
TC7
SW1 Tracking fL (2.6 MHz):
L4 (SW1)
fH (6.0 MHz):
TC2
SW1 Band fL: L7
Coverage fH: TC4
SW2 Band fL: L8
Coverage fH: TC3
SW2 Tracking fL (8.5 MHz): L5
fH (19 MHz): TC1
Instrument
Connection
Specified
Value/Adjusting
Point
IF T1
Detection T2
Band Coverage fL: L2
fH: TC6
Test Stage
Input: Antenna
Output: Pin 1 of IC1
• FM IF/RF
Tracking fL (88.0 MHz):
L1
fH (108.0 MHz):
TC5
Instrument
Connection
Specified ValueTest Stage
VR1 76 kHz ±200 Hz Pin 13 of IC2
• VCO Frequency
Instrument Connection
Tape 1 Tape 2
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WF-930Z
– 7 –
MW SW1
L3 L4
SW1
TRACKING
fL
fH
FM
TRACKING fH fL
SW2 BAND
COVERAGE
MW BAND
COVERAGE
fH fL
fH fL
MW
TRACKING fL fH
fL
fH
FM IF
AM IF
VCO
FM BAND
COVERAGE
fH fL
SW2
TRACKING
SW1 BAND
COVERAGE
fH fL
TC2 TC1
TC3
TC4
L5
L8
L2
L1 L6
L7
IC2 IC1
T3
T2
T1
VR1
TC5
TC8
TC6
TC7
MAIN PWB
112
13 24
19
FM DETECTION
Figure 7-1 ADJUSTMENT POINTS
Figure 7-2 ADJUSTMENT POINTS
TAPE SPEED
VR501
CNP501
IC401
MAIN PWB
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WF-930Z
A
B
C
D
E
F
G
H
1234 5 6
– 8 –
• NOTES ON SCHEMATIC DIAGRAM can be found on page 12.
Figure 8 SCHEMATIC DIAGRAM (1/2)
4.6V
0.6V
0.4V
12V
7.6V
8.2V
0V
(0V)
(0.7V)
0V (0V)
0.7V
(10.2V)
0V
0
(
(0V)
0.7V
<0V>
<0V>
<0.7V>
(0.7V)
(0V)
0.1V
0.7V 2.2V
HI-SPEED DUBBING : ( )
NORMAL SPEED : OTHER
(0V)
HI-SPEED DUBBING : ( )
MIC REC : < >
SW101D
SW101B SW101C SW101A 123456789
10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
L102
22mH
SW101E
L104
2.7mH
L103
2.7mH
SW101F
RECORD/
PLAYBACK
C125
150P C126
150P
IC101
TA8189N
C122
130P
R124
1.2K
C120
4.7/50
R116
220 C118
0.015
(ML)
R131
10K
Q105 8050 D
R127
100
R126
47
C132
0.012
(ML)
C134
100/10
C130
0.02
C129 0.001 (ML)
C127 120P
C128
330P
R132
220
C136
22/16
R133 1M
C119
4.7/50
R157
22K
R158
22K
C156
0.01
C155
0.01
R120
47K
R115
220
C117
0.015
(ML) R119
47K
R112
180K
C152
330P
R111
180K C151
330P
C114
10/25
R114
2.2K
R113
2.2K
C154
0.001
R155
330K
C153
0.001
R103
180K
R105
5.6K
R107
4.7K
C108
0.033
(ML)
C107
0.033
(ML)
R162
68K
R161
68K
R102
56
R101
56
C103
820P
C102
820P C101
820P
R110
22K
R109
22K
D102
1N4148 D103
1N4148
C110
4.7/50
R129
10K
R130
10K
C135
22/16
R135
10K
C138
2200/10
C109
4.7/50
Q103
9014 C
LINE AMO.
C121
130P R123
1.2K
D104
1N4148
D503
1N4148 R510
22K
C149
10/25
R134
10K D101
1N4148
D5
1N4148 D6
1N4148
C147
10/25
R146
10K
C148
47/10
R148
220
MIC
MUTING
Q102
9014 C
C146
1/50
R144
47K
MIC AMP.
Q101
9014 C
R143
68
C145
220P
R142
330K
C144
1/50
R141
4.7K C143
0.001
R139
100
R140
1K
C141
1/50
C140
10/25
R137
8.2K
R138
1K
R151
47K
R153
2.2K
R152
2.2K
R150
47K D4
1N4148
R121
22K
D501
1N4148 Q501
8050 D
R502
100
R501
680
C507
0.02 C502
0.02
SW401B
Q502
9014 C
R503
10K
R504
10K
Q503
9014 C
R122
123456789
1920 17 16 1518
10
22 21 24 23
C19
0.02
C17
10/25
C40
0.001
R5
100
C9
0.02
C39
0.001
98
7
6
5
4
3
21
T1
C12
3P (CH)
TC7
C10
5P
(CH)
TC2
TC1
SW1FSW1H
L3
L5
L4
123
C42
4.7/50
IC2
LA1805
AMP. & FM MPX.
C30
0.04
C31
22/16
CF2
460kHz
C33
0.012 (ML)
C32
0.012 (ML)
R
1
1
0
R
1
1
0
C29
0.02
C28
100/10
C25
R
1
10
0
C24
3.3/50
R11
22K
C23
0.0082
(ML)
T2
R9
3.9K
D2
1N4148
C7
3P
(CH)
C8
15P
(CH)
C41
0.02
C4
5P
(CH)
C44
0.02 R1
100
TC6
TC5
VC6
VC5
C5
0.05
C27
1/50
C43
0.02
SW1A
C38
5P (CH)
C37
5P
(CH)
C15
0.0047
(styrol)
C13
300P
C16
10P
(CH)
TC8
TC3 TC4
D1
1N4148
R8
100
1CNP102
2
3
1
CNS101
2
3
1CNP104
2
3
1
CNS103
2
344
MIC101
BUILT-IN
MICROPHONE
J102
BPF1
C3
20P
(CH)
C1
10P
(CH) C2
0.001
C6 27P (RH)
R4
47
C20
0.0039
(ML)
C22
470P
C21
0.04
C137
2.2/50
C111
4.7/50
C113
10/25
C112
4.7/50
C150
22/16
R154
100
R147
10K
C18
0.02
R6
47
L7
SW1
OSC.
L6
MW
OSC.
C14
0.0015
(Styrol)
C11
5P
(CH)
C36
5P
(CH)
IC1
TA7378P
FM FRONT END
R3
220K
J101
T3
C131
0.0082
(ML)
R125
27K
R128
100
R108
4.7K
R106
5.6K
C106
33/10
R104
180K
C105
33/10
C505
0.02
C503
220/10
D502
MTZJ8.2C
C504
0.02
R
1
R2
33
L1
L2
SW1C
R10
470K
SW
3
FM M
SW1E
R7
47
VC8
VC7
SW1BSW1D
C142
0.018
(ML)
R145
4.7K
R159
22K
D105
1N4148
R149
4.7K
SW103B
C104
820P
L101
22mH
R136
4.7K
FM/SW
ROD ANTENNA
GND
+B
REC
IN
REC
NF
REC
OUT
M/N
GND1
MIX
OUT
PRE
OUT
MATAL
OUT
NF
CH1
/B
CH1
/A
CH2
/A CH2 /B NF MATAL OUT PRE OUT A/B VCC REC OUT REC NF REC
IN ALC
FM IF
IN AM
MIX AM
IF GND GND GND L-CH R-CH
MPX
IN
FM
DET
OUT
AM
DET
VCCAM
RF
AM
OSC
OSC
RF AMP.
VCCGND
1
2
3
1
2
3
L-CH
R-CH
RECORD/PLAYBACK
HEAD
PLAYBACK HEAD
ERASE
HEAD
L-CH
R-CH
L-CH
R-CH
TAPE2
TAPE1
SW101 : RECORD/PLAYBACK
RPRP
RPRP
BIAS
OSC.
L105
BCA
SW102
BEAT
CANCEL
R
+B +B
P
BIAS
OSC.
VOLTAGE
REGULATOR
Q502, Q503 : SWITCHING
ST
A
RA
D
PO
W
FM DET
FM IF
CF1
10.7MHz
FM IF
FM
OSC.
FM RF
FM BAND PASS
FILTER
FM
SW1
SW2
MW
SW2
SW1
FM
MW
MW/SW1
BAR ANTENNA
SW2
ANTENNA
SW1
ANTENNA
MONO
SW2
MW
FM
SW1
FM
MW
SW1
SW2
BAND
SELECTOR
SW2
OSC.
L8
FT1
FINE TUNING
SW2
SW1
MW
FM
SW2
SW1
MW
FM
MW
SW1
MW
SW1 SW2
SW2
FM FM
BAND
SELCTOR
SW1G
CD/LINE
MIXING
MICROPHONE
P
R
OFF/MIC ON
HIGH/
MIC OFF
NORMAL
+B
SW103 :
DUBBING SPEED
/MIC
PRE AMP.
VOLUME PWB-A2
MAIN PWB-A1
AM IF
AM IF
STAND
-
POW
E
FM
TRACKING
fHfL
L1 TC5
fHfL
L2 TC6
FM BAND
COVERAGE
fHfL
L3 TC7
MW
TRACKING
fHfL
MW BAND
COVERAGE
L6 TC8
fHfL
L4 TC2
SW1
TRACKING
fHfL
L7 TC4
SW1 BAND
COVERAGE
SW
2
TR
A
SW
2
CO
V
SW1 : BAND SELECTOR
SW101 : RECORD/PLAYBACK
MIX
+B
+B
+B
+B
+
+B
+B
+B
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WF-930Z
– 9 –
78 9101112
Figure 9 SCHEMATIC DIAGRAM (2/2)
0V
0V
0V
0V
<0.7V>
<0.7V>
(10.2V)
0V
0V
(0V)
(0V)
0.7V 10.9V
(6.9V)
(10.3V)
10.3V 10.9V
(10.8V)
MIC REC : < >
0.7V
1.4V
4.9V
1.4V
0V
5V
1.4V
4.9V
4.8V
1.7V
1.7V 1.7V
1.7V
1.7V
1.7V
1.6V
1.6V
5.1V
1.4V
1.6V
0V
5.6V
0V
2.3V
2.3V
6.2V
0.7V
1.7V
0V
5.7V
0V
2.3V
4.6V
0.9V
1.1V
1.7V
1.7V
1.7V
1.5V
1.6V
0.4V
5.5V
5.3V
2.3V
6.2V
0.9V
0V
1.6V
0.9V
6.2V
6.2V
0.6V
1.6V
1.5V
1.1V
1.6V
1.6V
0V
0V
0V
1.2V
1.3V
1.4V
1.3V
0V (3.5V)
2V
1.3V
0V
0V
0.9V
0V
1.3V
2V
1.4V
5.5V
1.6V <0V>
1.4V
1.3V
1.2V
0V
0V
4.3V
4.3V
4.9V
4.9V
4.3V
4.3V
4.9V
4.9V
4.3V
4.3V
4.9V
4.9V
4.3V
4.3V
4.9V
4.9V
3.2V
2V
2V
3.2V
2.6V
2.6V
5.23V
0V
12V
9.9V
0.6V
0V
12V
10.8V
0V
0.6V
9.9V
5.9V
0V
MIC REC : < >
HI-SPEED DUBBING : ( )
5.9V
L501
22µH
R157
22K
R158
22K
C156
0.01
C155
0.01
R120
47K
R119
47K
R121
22K
5
01
8
0
W
401B
Q503
9014 C
Q504
8555 D
VR501
2.2K (B)
R508
470
R509
56K R507
6.8K
C506
100/25
R122
22K
1
+B
+B
CNP501
2
3
4
5
6
7
8
1
CNS502
2
3
4
5
6
7
8
M
M501
TAPE
MOTOR
7
9
8
4
53
2
12
11
10
2
11
2
CNS504
2
1
CNP503
F601
T1.25A
L 250V
D603
1N5392
C603
0.02
C601
0.02
C604
0.02
C602
0.02
D601
1N5392
D602
1N5392
R118
22K
1CNP201
2
3
4
5
6
1CNS251
16
2
3
4
5
6
9
16 15 14 13
11 1210
C410
100/10
C409
100/10
R409
120
C417
47/25
C420
22/25
R410
120
C407
0.001
C408
0.001
R407
33K
R408
33K
C406
4.7/50
R404
1K
C405
4.7/50
Q401
9014 C
Q402
9014 C
R405
1K
R406
1K
VR401A
50K (B)
VR401B
50K(B)
C401
0.001
(ML)
C402
0.001
(ML)
R401
2.7K
R402
2.7K
C404
0.15
(ML)
C403
0.15
(ML)
C419
2200/25
C413
0.22
(ML)
C414
0.22
(ML)
C415
1000/16
C416
1000/16
R413
1K
R414
1K
R416
100
R415
100
0.012
(ML)
C32
0.012 (ML)
R16
10K
R15
10K C35
4.7/50
C34
4.7/50
R18
2.7K
R17
2.7K
R13
1.5K
VR1
10K (B)
C25
3.3/50
R12
100K
R522
470
R14
1K
C411
100/16
C412
100/16
R403
1K
61
IC401
BA5415
POWER AMP.
D604
1N5392
R506
100K
C505
0.02
5
04
02 R505
10K
T601
POWER
TRANSFORMER
1
3
57
9
15
19 17 11
1012
141618202224
13
23 21
24
68
IC251
BA3822LS
GRAPHIC
EQUALIZER
C271
0.033
(ML)
C267
0.01
(ML)
C263
0.0033
(ML)
C259
0.001
(ML)
C273
1/50
C269
0.33/50
C255
4.7/50
C265
0.1
(ML)
C261
0.033
(ML)
VR253A
50K (B)
VR252A
50K (B) VR254A
50K (B)
X-BASS
VR255A
50K (B)
VR251B
50K (B)
C253
4.7/50
C258
0.022
(ML)
R253
2.2K
R252
1K
C275
100/10
C260
0.001
(ML)
C264
0.0033
(ML)
C268
0.01
(ML)
C272
0.033
(ML)
VR254B
50K (B)
VR255B
50K (B)
X-BASS
VR253B
50K (B) VR252B 50K (B)
C262
0.033
(ML)
C266
0.1
(ML)
C270
0.33/50
C274
1/50
VR251A
50K (B)
C256
4.7/50
C252
4.7/50
R251
1K C257
0.022
(ML)
C254
4.7/50
R254
2.2K
C251
4.7/50
R257
330
11
4
CNP505
2
3
4
+B
1
CNS506
2
3
4
C26
0.0015
(Styrol)
K
SW301
FM MODE
SW401A
FUNCTION
SW401D
R117
22K
SW401C
+B
L
-CH R-CH
M
PX
IN VCO
+
–
–
+
B
A
–
+
OUTPUT
GND
FILTER
NF
OUTPUT
NF
VCC
STAND
-BY
H
ING
STAND-BY/TAPE
RADIO
POWER ON/CD
TAPE
SPEED
Q504 : MOTOR CONTROL
SW502
TAPE1 MAIN
SW503
TAPE2 PLAY
SW501
TAPE2 MAIN
BATTERIES
DC12V [ “D” size (UM/SUM-1,
R20 or HP2) battery x 8
POWER PWB-A4
AC110V – 127V
50/60Hz
AC220V – 240V
50/60Hz SW601
VOLTAGE
SELECTOR SO601
AC POWER INPUT
SOCKET
0V
FM SIGNAL
MW/SW1/SW2 SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
J403
HEADPHONES
Q401, Q402 : MUTING
VOLUME
VOLUME
GRAPHIC EQUALIZER
GRAPHIC EQUALIZER
10kHz 330Hz 3.3kHz1kHz
10kHz 1kHz 330Hz 3.3kHz
1
2
3
4
5
6
7
8
9
VOLTAGE
IC1 VOLTAGE
FM VOLTAGE AM
IC2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
PIN
NO.
PIN
NO. VOLTAGE
FM VOLTAGE AM
PIN
NO.
PIN
NO. PIN
NO.
PIN
NO. 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
IC101
VOLTAGE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
IC251
VOLTAGE
1
2
3
4
5
6
7
8
9
10
11
12
VOLTAGE
IC401
GRAPHIC EQUALIZER
GRAPHIC EQUALIZER PWB-B
J401
SPEAKERS
TERMINAL
R-CH
L-CH
SP701
WOOFER
SP702
WOOFER
R-CH
SP703
TWEETER
SP704
TWEETER
SPEAKERS
SPEAKERS
L-CH
D522
L-34HD
POWER/BATT.
D521
L-34HD
FM STEREO
VCO
STEREO
MONO
LED PWB-A3
RADIO
STAND-BY/TAPE
POWER ON/CD
POWER ON/CD
STAND-BY
/TAPE
RADIO
POWER ON
/CD
RADIO
STAND-BY
/TAPE
FUNCTION
SELECTOR
SW401 :
f
H
T
C2
NG
f
H
T
C4
A
ND
A
GE
SW2
TRACKING
fH
SW2 BAND
COVERAGE
fH L8 fL
SW2 BAND
COVERAGE
L5
fL
SW2
TRACKING
TC1
TC3
+B
+B
+B
+B
+B
+B
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WF-930Z
A
B
C
D
E
F
G
H
1234 5 6
Figure 10 WIRING SIDE OF P.W.BOARD (1/2)
– 10 –
GRAPHIC EQUALIZER PWB-B
VOLUME PWB-A2
POWER PWB-A4
SW601
VOLTAGE SELECTOR
T601
POWER
TRANSFORMER
AC110V-127V
50/60Hz
AC220V-240V
50/60Hz
SO601
AC POWER INPUT
SOCKET
BATTERIES
DC12V["D"size(UM/SUM-1,
R20 or HP2)BATTERY X 8]
(232) WH
AC220V-240V AC110V-127V
M501
TAPE
MOTOR
SW501
TAPE2
MAIN
SW502
TAPE1
MAIN
SW503
TAPE2
PLAY
AB +-
BR
WH
WH
RD
OR
YL
GR
BL
VR
GY
1
CNS502
2
3
4
5
6
7
8
RD
CNS103
CNS101
WH
RD
WH
BK 2
3
4
1
2
3
1
ERASE(67)
HERAD
TAPE1
RDWH
(85)
BK
BR
BR
RECORD/PLAYBACK(66)
HEAD
RECORD/PLAYBACK(65)
HEAD
RDWH
(245) (247)
(248) (246)
FM/SW ROD ANTENNA (229)
BR
RD
WH
BK
BK
WH
RD
BR
BK
GR
GR
OR
WH
WH
RD BL
BK 2
CNS504
1
RD
RD
BK
RD
OR
YL
GR
BL
1
2
3
4
5
6
TAPE2
MIN
VR255 X-BASS
GRAPHIC EQUALIZER
VR254
330Hz
VR253
1kHz
VR252
3.3Hz
VR251
10kHz
CNS251
MAX
BR
COLOR TABLE
RD
OR
YL
GR
BL
VL
GY
WH
BK
PK
BROWN
RED
ORANGE
YELLOW
GREEN
BLUE
VIOLET
GRAY
WHITE
BLACK
PINK
C273
C255
C267
61
C263
C257
R253 R254
C271
C274
C270
C266
C262
C259
C252
C251
C275
1
5
15
23
2
10
20
24
C272
C268
C264
C260 C256
C258
IC251
C265
C269
C254
C253
C261
VR255
VR254
B
B
B
B
B
A
A
A
A
A
VR253
VR252
VR251
R252
R257
C403
C404
R401
A
B
C401
C402
VR401
VOLUME
R402
F601 T1.25A L 250V
D604
C604
C602
C603
C601
D602
D603
D601
D605
R251
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