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Sharp WF-930Z(BK), Service Manual

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Sharp WF-930Z(BK) Service Manual Download Page 9

WF-930Z

– 9 –

7

8

9

10

11

12

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

501

80

W401B

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

5

3

2

12

11

10

2

1

1

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

1

CNP201

2

3

4

5

6

1 CNS251

1

6

2

3

4

5

6

9

16

15

14

13

11

12

10

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

6

1

IC401

BA5415

POWER AMP.

D604

1N5392

R506

100K

C505

0.02

504

02

R505

10K

T601

POWER

TRANSFORMER

1

3

5

7

9

15

19

17

11

10

12

14

16

18

20

22

24

13

23

21

2

4

6

8

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

1

1

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

MPX

IN

VCO

+

–

–

+

B
A

–

+

OUTPUT

GND

FILTER

NF

OUTPUT

NF

VCC

STAND

-BY

HING

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

3.3kHz

1kHz

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 :

fH

TC2

NG

fH

TC4

AND

AGE

SW2
TRACKING

fH

SW2 BAND
COVERAGE

fH

L8

fL

SW2 BAND
COVERAGE

L5

fL

SW2
TRACKING

TC1

TC3

+B

+B

+B

+B

+B

+B

Summary of Contents for WF-930Z(BK)

Page 1: ...MOVING 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 ...

Page 2: ...ion 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...

Page 3: ...phone 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...

Page 4: ...ew 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 F...

Page 5: ...ve the motor bracket 3 Remove the screws D2 x 3 pcs to remove the motor Note When mounting the motor pay attention to the motor mounting angle How to remove the belts See Fig 5 5 1 Remove the main belt E1 x 1 pc at the tape 1 side from the motor pulley 2 Remove the main belt E2 x 1 pc at the tape 2 side from the motor pulley 3 Remove the REW FF belt E3 x 2 pcs from the REW FF roller 4 Put on the b...

Page 6: ...icrophone 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 Cov...

Page 7: ...L 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 1 12 13 24 1 9 FM DETECTION Figure 7 1 ADJUSTMENT POINTS Figure 7 2 ADJUSTMENT POINTS TAPE SPEED VR501 CNP501 IC401 MAIN PWB ...

Page 8: ...29 0 02 C28 100 10 C25 R1 100 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 1 CNP102 2 3 1 CNS101 2 3 1 CNP104 2 3 1 CNS103 2 3 4 4 MIC101 BUILT IN MICROPHONE J102 BPF1 C3 20P CH C1 10P CH C2 0 001 C6 27P ...

Page 9: ...3 23 21 2 4 6 8 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 VR25...

Page 10: ...ECORD PLAYBACK 66 HEAD RECORD PLAYBACK 65 HEAD RD WH 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 C27...

Page 11: ...RD PLAYBACK R159 C34 C121 SW101 L101 CNP104 R17 R18 R132 R101 C101 C103 C119 R111 Q103 R135 IC101 C111 C105 C113 R161 R128 R526 R510 R155 R157 R14 CNP201 6 5 4 3 2 1 4 3 2 1 C109 C117 C153 C155 C150 C125 C122 C42 R118 R131 R124 C140 C126 L102 SW401 SW301 1 3 B D A C R108 R129 R106 R104 R102 C102 C104 R112 C137 C149 C135 C156 C106 C112 A B C D E F C108 C107 R162 R136 R137 R527 C110 C114 C120 C152 R...

Page 12: ...NO POSITION DESCRIPTION Theindicatedvoltageineachsectionistheonemeasuredby 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 Partsmarkedwith î areimportantformaintaining the safety of the set Be sure to replace these parts with specifiedonesformainta...

Page 13: ...VC MN Cylindrical type without lead wire VC TV Square type without lead wire VC TQ Square type without lead wire VC CY Square type without lead wire VC CZ Square type without lead wire VC J The 13th character represents capacity difference J 5 K 10 M 20 N 30 C 0 25 pF D 0 5 pF Z 80 20 If there are no indications for the electrolytic capacitors error is 20 Resistors VRD Carbon film type VRS Carbon ...

Page 14: ... C22 VCKYPU1HB471K J AA 470 pF 50V C23 VCQYKU1HM822K J AA 0 0082 µF 50V Mylar C24 25 RC GZA335AF1H J AB 3 3 µF 50V Electrolytic C26 VCQSMA1HL152J J AB 0 0015 µF 50V Styrol C27 RC GZA105AF1H J AB 1 µF 50V Electrolytic C28 RC GZA107AF1A J AB 100 µF 10V Electrolytic C29 VCKZPU1HF203Z J AA 0 02 µF 50V C30 VCKZPU1HF403Z J AA 0 04 µF 50V C31 RC GZA226AF1C J AB 22 µF 16V Electrolytic C32 33 VCQYKU1HM123K...

Page 15: ...A 10 kohm 1 4W R506 VRD ST2EE104J J AA 100 kohm 1 4W R507 VRD ST2EE682J J AA 6 8 kohms 1 4W R508 VRD ST2EE471J J AA 470 ohms 1 4W R509 VRD ST2EE563J J AA 56 kohms 1 4W R510 VRD ST2EE223J J AA 22 kohms 1 4W R522 VRD ST2EE471J J AA 470 ohms 1 4W OTHER CIRCUITRY PARTS CNP102 9FGS9425031001 J AB Plug 3Pin CNP104 9FGS9425041001 J AB Plug 4Pin CNP201 9FGS9425061001 J AC Plug 6Pin CNP501 9FGS9425081001 J...

Page 16: ...50 J Bracket Fine Tuning Knob Holder 238 9FG13294020010 J AB Bracket Power PWB 239 9FG13294030020 J AB Plate Record 240 9FG13294030030 J AB Plate Cassette Button Holder 241 9FG13295070030 J AB Holder Plate Front Cabinet 242 9FG13295070050 J AD Cover Power Transformer 243 9FG13394020020 J AC Shaft Cassette Button 244 9FG13495080010 J AF Heat Sink 245 9FG13595070020 J AB Spring Battery 246 9FG135950...

Page 17: ...thylene Bag Speaker 9FG21195070020 J Polyethylene Bag Unit 9FG21195070030 J Polyethylene Bag AC Power Supply Cord Holder 9FG21295080010 J Packing Add Top Left 9FG21295080020 J Packing Add Top Right 9FG21295080030 J Packing Add Bottom Left 9FG21295080040 J Packing Add Bottom Right P W B ASSEMBLY Not Replacement Item PWB A1ç4 9FG19995081110 J Main Volume LED Power Combined Ass y New Zealand Only PWB...

Page 18: ... 2 3 19 SW501 28 35 62 10 11 12 13 5 6 7 4 5 6 7 8 9 SW502 22 53 52 51 50 15 73 53 49 64 71 52 73 47 83 74x2 16 43 59 60x2 72 72x2 40 M501 92 55 60x2 56x3 93 95 91 72x2 94 16 74x2 44 59 39 40 73 47 83 15 73 17 21 50 51 71 64 49 69 H K F C A B F H C D E D R G B A 17 57x3 39 E 85 78 85 24 8 76 32 31 TAPE 2 TAPE 2 TAPE 1 TAPE 1 71 SW503 26 72 BELT CONNECTION Motor 39 39 59 40 59 40 43 44 G ...

Page 19: ...9x4 285x4 604x2 215 602 213 606 214 601 228 219 609x4 605x6 Silicon Grease IC401 614x2 281 VR401 227 with VR401 266 267 268 265 606 606x2 284x9 218 MIC101 273 272 212 210 615 606 606 204x2 209x2 241x2 241x2 220 221 222 226 226 223 225 224 205 280 206 207 208 with VR401 277 203 240 240x2 240 243 243 211 279 270 252 251 250 253 254 255 256 257 249 258 606x2 606x2 TAPE MECHANISM 234 202 278x2 271 606...

Page 20: ...y Control Center of Communication Audio System Group Sharp Corp Figure 7 SPEAKER EXPLODED VIEW TWEETER SP703 L CH SP704 R CH TWEETER SP703 L CH SP704 R CH WOOFER SP701 L CH SP702 R CH WOOFER SP701 L CH SP702 R CH RED GREEN BLACK LINE LEFT 303 RIGHT 304 LEFT 305 RIGHT 306 206 SP703 704 SP701 702 612x4 302 301 607x4 ...

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