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Sony WM-EX570, Service Manual

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Sony WM-EX570 Service Manual Download Page 1

MICROFILM

SERVICE MANUAL

CASSETTE PLAYER

AEP Model

E Model

Tourist Model

SPECIFICATIONS

WM-EX570

Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol 

a

 are trade-

marks of Dolby Laboratories Licensing Corporation.

Model Name Using Similar Mechanism

NEW

Tape Transport Mechanism Type

MT-WMEX550-125

Photo: Black model

Ver 1.0  1999. 02

Summary of Contents for WM-EX570

Page 1: ...by noise reduction manufactured under license from Dolby Laboratories Licensing Corporation DOLBY and the double D symbol a are trade marks of Dolby Laboratories Licensing Corporation Model Name Using Similar Mechanism NEW Tape Transport Mechanism Type MT WMEX550 125 Photo Black model Ver 1 0 1999 02 ...

Page 2: ...may be dam aged by heat TABLE OF CONTENTS 1 SERVICING NOTES 3 2 GENERAL 5 3 DISASSEMBLY 6 4 MECHANICAL ADJUSTMENTS 11 5 ELECTRICAL ADJUSTMENTS 11 6 DIAGRAMS 6 1 Block Diagram 12 6 2 Printed Wiring Board 14 6 3 Schematic Diagram 17 6 4 IC Pin Function Description 23 7 EXPLODED VIEWS 25 8 ELECTRICAL PARTS LIST 28 SAFETY RELATED COMPONENT WARNING COMPONENTS IDENTIFIED BY MARK OR DOTTED LINE WITH MARK...

Page 3: ...photo reflector The PH701 is mounted on the MAIN board and there fore the GEAR cannot be detected with the MAIN board removed As a result the motor cannot be controlled causing malfunction Further the S702 FWD REV switch is also mounted on the MAIN board and with the board removed the mechanism position cannnot be detected and the operation is not changed over Therefore when the voltage check is e...

Page 4: ...Y gear TA gear TB gear S motor pulley gear REEL S side gear NR REV right side FWD left side gear REEL T side clutch assy M gear TB gear REEL T side gear Y gear NR motor pulley pulley reverse clutch assy M flywheel R assy flywheel N assy gear FR FF left side gear NR gear Y gear S flywheel N assy flywheel R assy pulley reverse clutch assy M motor pulley gear REEL S side gear FR REW right side ...

Page 5: ... 5 SECTION 2 GENERAL This section is extracted from instruction manual ...

Page 6: ... disassembled in the order shown below LID ASSY CASSETTE Case Assy Set Lid Assy Cassette Ornament Assy Belt Holder Motor Capstan Reel M901 Head Magnetic Main Board Note for Installation 1 Open the cassette lid assy 3 Remove the cassette lid assy to direction of the arrow A A 2 screw M1 4 1 6 2 screw M1 4 2 0 ...

Page 7: ...MENT ASSY 3 case assy 2 two claws 1 two screws M1 4 2 2 1 two screws M1 4 2 2 4 Remove the reel ornament to direction of the arrow B 2 Push to the direction of the arrow A remove the claw of knob OPEN 1 four claws 3 B A ...

Page 8: ... 8 BELT HOLDER 1 belt 1 Remove two solders of battery terminal 2 screw 3 two claws 4 holder ...

Page 9: ...ALLATION MAIN BOARD On installation MAIN board adjust the S702 and lever SW 1 Remove four solders of motor 3 screw M1 4 1 6 4 MAIN board 2 flexible board CN301 3 three screws 1 Remove two solders of plunger solenoid lever SW S702 ...

Page 10: ...STAN REEL M901 HEAD MAGNETIC 1 two screws M1 4 2 Remove the motor M901 to direction of the arrow 1 two pinch levers 3 bracket assy 6 head magnetic HP901 4 flexible board CN301 5 two screws M1 4 7 2 2 screw M1 4 1 6 ...

Page 11: ...MOTOR CONTROL SWITCH Q601 602 1 MOTOR BRAKE SWITCH Q602 2 ROTATION DETECT SENSOR PH701 CAPSTAN REEL MOTOR DRIVE IC601 SYSTEM CONTROLLER IC701 S704 708 S701 CASSETTE HOLDER M901 CAPSTAN REEL HP901 PLAYBACK AUDIO MASTER AMP IC301 SIGNAL PATH PLAYBACK R CH Same as L CH MOTOR DRIVE CIRCUIT SWITCH LOGIC CIRCUIT BIAS REFERENCE VOLTAGE OSC CIRCUIT LED DRIVE Q707 1 LED DRIVE Q707 2 LED DRIVE Q705 LED DRIV...

Page 12: ......

Page 13: ...ine H adjustment for repair Total current is measured with no cassette installed Power voltage is dc 1 5 V and fed with regulated dc power supply from battery terminal Voltages and waveforms are dc with respect to ground under no signal conditions no mark PLAYBACK Voltages are taken with aVOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Waveforms are t...

Page 14: ...IN PW IN C BST OUT BST NF EQ R PW NF R RECT L HPF L SC IN L NR OUT L 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 42 PRE VCC 41 PRE GND 3 40 IN R REV 39 IN R FWD 38 DC SRV R IN L FWD 37 PRE VREF 36 34 DC SRV L 35 IN L REV 33 45 44 43 48 46 47 13 RECT R 11 PRE GND 2 12 14 HPF R 10 15 SC IN R 9 16 NR OUT R 8 RF IN 7 PW VREF 6 PW IN R 5 PRE GND 1 4 PW IN L 3 PW NF L 2 EQ L 1 17 BUF IN L 18 EK IN R...

Page 15: ...ed to crystal oscillator X701 32 768 kHz for the system clock 16 XT Connected to crystal oscillator X701 32 768 kHz for the system clock 17 VDD Power supply terminal 1 5V 18 VSS1 Ground terminal 19 VCM 20 VCP 21 VSS2 22 VEE 23 SET STOP1 I Battery voltage detect input terminal Middle point voltage 0 75V input in this set 24 SET STOP2 I Battery voltage detect input terminal 25 KEY IN I Key input ter...

Page 16: ...ut to the TA2072AF IC301 41 MB GRV CTL O MEGA BASS GROOVE selection signal output to the TA2072AF IC301 42 LOAD CTL O Load control signal output terminal 43 AVLS CTL O AVLS Automatic Volume Limiter System on off control signal output to the TA2072AF IC301 44 AMP CTL O Amp on off control signal output to the TA2072AF IC301 ...

Page 17: ...CE ASSY L BLUE AEP E FR 1 X 3376 597 1 CASE EX J ASSY B BLACK JE 1 X 3376 598 1 CASE EX J ASSY S SILVER JE 1 X 3376 599 1 CASE EX J ASSY L BLUE JE 2 3 009 676 01 ORNAMENT REEL GRAY SILVER BLUE 2 3 009 676 11 ORNAMENT REEL BLACK BLACK 3 3 930 794 11 KNOB HOLD GRAY SILVER BLUE 3 3 930 794 21 KNOB HOLD BLACK BLACK 4 3 009 677 01 KNOB OPEN GRAY BLACK SILVER BLUE 5 X 3377 126 1 LID ASSY 570 B CASSETTE ...

Page 18: ...X 3372 849 1 PINCH LEVER R ASSY 63 X 3373 172 1 BRACKET ASSY JE 63 X 3374 438 1 BRACKET ASSY EXCEPT JE 64 3 009 667 01 SPRING TENTION 65 3 011 277 01 COVER B Y MD 66 3 019 716 01 SCREW M1 4 P LOCK ACE EXCEPT JE 66 3 704 413 31 SCREW M1 4X7 2 JE 67 3 704 197 41 SCREW M1 4X2 2 SILVER BLUE SILVER 67 3 704 197 42 SCREW M1 4X2 2 LOCKING BLACK BLACK 68 3 704 197 01 SCREW M1 4X1 6 LOCKING SILVER BLUE SIL...

Page 19: ... SLIDER LOCK 115 3 007 436 01 SPRING TRIGGER TORSION 116 X 3372 848 1 CLUTCH ASSY M 117 3 932 724 21 WASHER 118 3 386 694 21 WASHER 119 X 3372 852 1 FLYWHEEL N ASSY JE 119 X 3374 751 1 FLYWHEEL N ASSY EXCEPT JE 120 3 007 430 01 BELT 121 3 007 428 01 WASHER R 122 X 3372 851 1 FLYWHEEL R ASSY JE 122 X 3374 750 1 FLYWHEEL R ASSY EXCEPT JE 123 3 007 434 01 PULLEY REVERSE 124 3 029 765 01 SCREW M1 4 TO...

Page 20: ...23 11 ELECT CHIP 2 2uF 20 25V C307 1 164 227 11 CERAMIC CHIP 0 022uF 10 25V C308 1 135 180 21 TANTALUM CHIP 3 3uF 20 6 3V C309 1 115 156 11 CERAMIC CHIP 1uF 10V C310 1 115 156 11 CERAMIC CHIP 1uF 10V C311 1 165 128 11 CERAMIC CHIP 0 22uF 16V C312 1 109 935 11 TANTALUM CHIP 4 7uF 20 4V C313 1 135 201 11 TANTALUM CHIP 10uF 20 4V C314 1 107 823 11 CERAMIC CHIP 0 47uF 10 16V C315 1 115 156 11 CERAMIC ...

Page 21: ... TRANSISTOR Q301 8 729 022 66 TRANSISTOR XN1210 TX Q302 8 729 422 39 TRANSISTOR XN4404 Q303 8 729 403 17 TRANSISTOR XN1215 Q304 8 729 230 72 TRANSISTOR 2SA1362YG Q305 8 729 421 23 TRANSISTOR XN1216 Q501 8 729 420 24 TRANSISTOR 2SB1218A QRS Q502 8 729 115 28 TRANSISTOR BN1L3Z K Q503 8 729 403 17 TRANSISTOR XN1215 Q504 8 729 420 24 TRANSISTOR 2SB1218A QRS Q601 8 729 403 42 TRANSISTOR XN1401 Q602 8 7...

Page 22: ...IP TYPE 3216 RB602 1 233 576 11 RES CHIP NETWORK 100 RB701 1 233 418 11 RES CHIP NETWORK 3 3K 3216 VARIABLE RESISTOR RV301 1 225 342 23 RES VAR CARBON 10K 10K VOLUME RV601 1 223 576 11 RES ADJ METAL GLAZE 2 2K SWITCH S701 1 762 970 21 SWITCH PUSH 1 KEY CASSETTE HOLDER S702 1 572 581 11 SWITCH SLIDE DIRECTION S703 1 572 922 11 SWITCH SLIDE HOLD S704 1 692 453 11 SWITCH KEY BOARD p S705 1 692 453 11...

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