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

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

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 –

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

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

18. (TAPE 1) Rewind Button: 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

23. (TAPE 2) Rewind Button: 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)

Front

Cabinet

''0''Point

Dial Drum (213)

Screw(606)

ø3 x8mm

Screw(601)

ø2 x4mm

Main PWB

Tape

Mechanism

FITTING OF DIAL POINTER

27 28 29 30

TAPE 1 TAPE 2

123456789

161718192021 2223 24 25

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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

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 1

TAPE 2

Main Bert TAPE 1

Main Bert

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

(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):

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

TRACKING fH

SW2 BAND

COVERAGE

MW BAND

COVERAGE

fH fL

TRACKING fL

FM IF

AM IF

VCO

FM BAND

COVERAGE

fH fL

SW2

TRACKING

SW1 BAND

COVERAGE

fH fL

TC2 TC1

TC3

TC4

L1 L6

IC2 IC1

VR1

TC5

TC8

TC6

TC7

MAIN PWB

112

13 24

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

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)

(0.7V)

0V (0V)

0.7V

(10.2V)

(

(0V)

0.7V

<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

C132

0.012

(ML)

C134

100/10

C130

0.02

C129

0.001 (ML)

C127

120P

C128

330P

R132

220

C136

22/16

R133

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

R101

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

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

C145

220P

R142

330K

C144

1/50

R141

4.7K C143

0.001

R139

100

R140

C141

1/50

C140

10/25

R137

8.2K

R138

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

22 21

24 23

C19

0.02

C17

10/25

C40

0.001

100

0.02

C39

0.001

C12

3P (CH)

TC7

C10

(CH)

TC2

TC1

SW1FSW1H

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)

C29

0.02

C28

100/10

C25

C24

3.3/50

R11

22K

C23

0.0082

(ML)

3.9K

1N4148

(CH)

15P

(CH)

C41

0.02

(CH)

C44

0.02 R1

100

TC6

TC5

VC6

VC5

0.05

C27

1/50

C43

0.02

SW1A

C38

5P (CH)

C37

(CH)

C15

0.0047

(styrol)

C13

300P

C16

10P

(CH)

TC8

TC3

TC4

1N4148

100

1CNP102

CNS101

1CNP104

CNS103

344

MIC101

BUILT-IN

MICROPHONE

J102

BPF1

20P

(CH)

10P

(CH) C2

0.001

27P (RH)

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

SW1

OSC.

C14

0.0015

(Styrol)

C11

(CH)

C36

(CH)

IC1

TA7378P

FM FRONT END

220K

J101

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

SW1C

R10

470K

FM M

SW1E

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

REC

OUT

M/N

GND1

MIX

OUT

PRE

OUT

MATAL

OUT

CH1

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

DET

OUT

DET

VCCAM

OSC

RF AMP.

VCCGND

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

BIAS

OSC.

L105

BCA

SW102

BEAT

CANCEL

+B +B

BIAS

OSC.

VOLTAGE

REGULATOR

Q502, Q503 : SWITCHING

FM DET

FM IF

CF1

10.7MHz

FM IF

OSC.

FM RF

FM BAND PASS

FILTER

SW1

SW2

SW1

MW/SW1

BAR ANTENNA

SW2

ANTENNA

SW1

ANTENNA

MONO

SW2

SW1

SW2

BAND

SELECTOR

SW2

OSC.

FT1

FINE TUNING

SW2

SW1

SW2

SW1

SW1 SW2

SW2

FM FM

BAND

SELCTOR

SW1G

CD/LINE

MIXING

MICROPHONE

OFF/MIC ON

HIGH/

MIC OFF

NORMAL

SW103 :

DUBBING SPEED

/MIC

PRE AMP.

VOLUME PWB-A2

MAIN PWB-A1

AM IF

STAND

POW

TRACKING

fHfL

L1 TC5

fHfL

L2 TC6

FM BAND

COVERAGE

fHfL

L3 TC7

TRACKING

fHfL

MW BAND

COVERAGE

L6 TC8

fHfL

L4 TC2

SW1

TRACKING

fHfL

L7 TC4

SW1 BAND

COVERAGE

SW1 : BAND SELECTOR

SW101 : RECORD/PLAYBACK

MIX

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WF-930Z

– 9 –

78 9101112

Figure 9 SCHEMATIC DIAGRAM (2/2)

<0.7V>

(10.2V)

(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

4.9V

4.8V

1.7V

1.7V 1.7V

1.7V

1.6V

5.1V

1.4V

1.6V

5.6V

2.3V

6.2V

0.7V

1.7V

5.7V

2.3V

4.6V

0.9V

1.1V

1.7V

1.5V

1.6V

0.4V

5.5V

5.3V

2.3V

6.2V

0.9V

1.6V

0.9V

6.2V

0.6V

1.6V

1.5V

1.1V

1.6V

1.2V

1.3V

1.4V

1.3V

0V (3.5V)

1.3V

0.9V

1.3V

1.4V

5.5V

1.6V <0V>

1.4V

1.3V

1.2V

4.3V

4.9V

4.3V

4.9V

4.3V

4.9V

4.3V

4.9V

3.2V

2.6V

5.23V

12V

9.9V

0.6V

12V

10.8V

0.6V

9.9V

5.9V

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

401B

Q503

9014 C

Q504

8555 D

VR501

2.2K (B)

R508

470

R509

56K R507

6.8K

C506

100/25

R122

22K

CNP501

CNS502

M501

TAPE

MOTOR

CNS504

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

1CNS251

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

C405

4.7/50

Q401

9014 C

Q402

9014 C

R405

R406

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

R414

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

C411

100/16

C412

100/16

R403

IC401

BA5415

POWER AMP.

D604

1N5392

R506

100K

C505

0.02

02 R505

10K

T601

POWER

TRANSFORMER

19 17 11

1012

141618202224

23 21

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

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

CNP505

CNS506

C26

0.0015

(Styrol)

SW301

FM MODE

SW401A

FUNCTION

SW401D

R117

22K

SW401C

-CH R-CH

IN VCO

–

OUTPUT

GND

FILTER

OUTPUT

VCC

STAND

-BY

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

FM SIGNAL

MW/SW1/SW2 SIGNAL

PLAYBACK SIGNAL

RECORD SIGNAL

J403

HEADPHONES

Q401, Q402 : MUTING

VOLUME

GRAPHIC EQUALIZER

10kHz 330Hz 3.3kHz1kHz

10kHz 1kHz 330Hz

3.3kHz

VOLTAGE

IC1 VOLTAGE

FM VOLTAGE

IC2

NO.

NO. VOLTAGE

FM VOLTAGE

NO.

NO. PIN

NO.

NO. 1

IC101

VOLTAGE

IC251

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

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

STAND-BY

/TAPE

RADIO

POWER ON

/CD

RADIO

STAND-BY

/TAPE

FUNCTION

SELECTOR

SW401 :

SW2

TRACKING

SW2 BAND

COVERAGE

fH L8

SW2 BAND

COVERAGE

SW2

TRACKING

TC1

TC3

All manuals and user guides at all-guides.com

WF-930Z

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

CNS502

CNS103

CNS101

BK 2

ERASE(67)

HERAD

TAPE1

RDWH

(85)

RECORD/PLAYBACK(66)

HEAD

RECORD/PLAYBACK(65)

HEAD

RDWH

(245) (247)

(248) (246)

FM/SW ROD ANTENNA (229)

RD BL

BK 2

CNS504

TAPE2

MIN

VR255 X-BASS

GRAPHIC

EQUALIZER

VR254

330Hz

VR253

1kHz

VR252

3.3Hz

VR251

10kHz

CNS251

MAX

COLOR TABLE

BROWN

RED

ORANGE

YELLOW

GREEN

BLUE

VIOLET

GRAY

WHITE

BLACK

PINK

C273

C255

C267

C263

C257

R253

R254

C271

C274

C270

C266

C262

C259

C252

C251

C275

C272

C268

C264

C260 C256

C258

IC251

C265

C269

C254

C253

C261

VR255

VR254

VR253

VR252

VR251

R252

R257

C403

C404

R401

C401

C402

VR401

VOLUME

R402

F601 T1.25A L 250V

D604

C604

C602

C603

C601

D602

D603

D601

D605

R251

All manuals and user guides at all-guides.com

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