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Ver 1.2  2000. 03

With SUPPLEMENT 1 (9-923-312-81)

WM-EX655/EX668

AEP Model

UK Model

WM-EX668

Tourist Model

WM-EX655

CASSETTE PLAYER

SPECIFICATIONS

MICROFILM

SERVICE MANUAL

Model Name Using Similar Machanism

NEW

Tape Transport Mechanism Type

MT-WMEX655-125

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

a

 are trademarks of

Dolby Laboratories Licensing Corporation.

Tape Player section and general

Frequency response (

a

 NR switch off)

30 – 18,000Hz

Output

Headphones (2 REMOTE jack)
Load impedance 8 – 300ohms

Power output

4mW + 4mW at DC operation

Power requirements

1.5V DC
Rechargeable battery (NC-6WM), 1.2V, 600mAH, Ni-Cd) One R6
(size AA) battery
Battery life (Aprrox. hours)
Rechargeable NC-6WM

9

Fully charged
Sony R6P (SR)

9

Sony alkaline LR6 (WM)

36

Rechargeable NC-6WM

45

Sony alkaline LR6 (WM)
Used together

Dimensions

Approx. 108.9 x 80 x 21.3 mm (w/h/d)

Weight

Approx. 150g (Main unit)
Approx. 215g (incl. Headphones with remote control, Recharge-
able battery NC-6WM (S), Type (C-60-HF))

Supplied Accessories

• Battery charger (1)
• Rechargeable battery (NC-6WM, 1.2V 600mAh, Ni-Cd) (1)
• Battery case (1) (WM-EX655)
• Stereo earphones with remote control (1) (WM-EX655)
• Carrying pouch (1)
• Rechargeable battery carrying case (1)
• Remote control unit (RM-WME654) (1)
• Sony battery R6P (SR) (1) (WM-EX655)
• AC plug adaptor (1) (WM-EX655)
• Clip (1) (WM-EX655)

Design and specifications are subject to change without notice.

Photo : WM-EX655

Summary of Contents for WM-EX655

Page 1: ...ower requirements 1 5V DC Rechargeable battery NC 6WM 1 2V 600mAH Ni Cd One R6 size AA battery Battery life Aprrox hours Rechargeable NC 6WM 9 Fully charged Sony R6P SR 9 Sony alkaline LR6 WM 36 Rechargeable NC 6WM 45 Sony alkaline LR6 WM Used together Dimensions Approx 108 9 x 80 x 21 3 mm w h d Weight Approx 150g Main unit Approx 215g incl Headphones with remote control Recharge able battery NC ...

Page 2: ... 6 EXPLODED VIEWS 6 1 Case Section 20 6 2 Audio Board Section 21 6 3 Mechanism Deck Section MT WMEX655 125 22 7 ELECTRICAL PARTS LIST 23 TABLE OF CONTENTS Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C during repairing Do not touch the soldering iron on the same conductor of the circuit board within 3 times Be careful not to apply force on the conductor wh...

Page 3: ... Contact for dry battery case 3 Tape operation buttons 4 Rechargeable battery case 5 BL SKIP indicatior 6 AVLS indicatior 7 FUNCTION button 8 HOLD switch 9 MB GRV Mega Bass Groove indicator 0 Main unit VOLUME knob Remote control VOL knob BATT indicator 2 REMOTE jack a DOLBY NR indicator SOUND AVLS Auto Volume limitter system switch Micro plug WM EX655 3 3 8 º 8 º Left Right Left Right WM EX668 ...

Page 4: ... the work from the beginning 1 Setting 1 Refer to 3 DISASSEMBLY and remove the case and open the AUDIO board 2 Connect the AUDIO board to the M901 motor and PM901 plunger using a jumper wire See Fig 2 3 Short the ATS terminals S901 4 Press and fixed the S701 HOLDER SW See Fig 1 AUDIO board Side B Fig 1 5 Supply 1 5V to the battery terminals and using a stabilized power supply 2 FF REW Modes 1 Inpu...

Page 5: ...ssy M Gear Reel T side Gear TB Flywheel N Assy Flywheel R Assy Pully Reverse Gear Reel T side Gear Reel S side Gear TA Gear TB Gear S Gear Y Gear NR REV Left side FWD Right side Motor Pully Flywheel N Assy Flywheel R Assy Pully Reverse Clutch Assy M Gear Reel S side Gear FR REW Right side Gear S Gear Y Gear NR Motor Pully Clutch Assy M Flywheel N Assy Flywheel R Assy Pully Reverse ...

Page 6: ...ove solder 4 Remove solder 1 Screw 6 Head flexible board Audio board 7 SECTION 3 DISASSEMBLY Note Followthedisassemblyprocedureinthenumericalordergiven 3 1 CASE ASSY REMOVAL 3 2 AUDIO BOARD REMOVAL rTheequipmentcanberemo vedusingthef ollowingpr ocedure Mechanism deck Case assy Cassette lid assy Audio board Set ...

Page 7: ...on 1 M CTL O Motor control output 2 M DIR O Motor rotating direction output 3 M BRK O Motor brake control output 4 RESET I Reset terminal H Reset 5 TEST1 Not used Connect to ground 6 TEST2 Not used Connect to ground 7 TEST3 Not used Connect to ground 8 L DOLBY O Dolby LED control output 9 L AVLS O AVLS LED control output 10 L BATT O BATT LED control output 11 L BLSKIP O BL SKIP LED control output ...

Page 8: ......

Page 9: ... from battery terminal Voltages and waveforms are dc with respect to ground in playback mode no mark PLAY Voltages are taken with a VOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Waveforms are taken with a oscilloscope Voltage variations may be noted due to normal produc tion tolerances Circled numbers refer to waveforms Signal path E PB 1 250mVp p 3...

Page 10: ...OB HOLD BLACK 9 3 015 922 11 KNOB HOLD SILVER 9 3 015 922 21 KNOB HOLD BLUE 9 3 015 922 31 KNOB HOLD ORANGE 10 3 389 523 35 SCREW IB LOCK SILVER BLUE ORANGE 10 3 389 523 36 SCREW IB LOCK BLACK 11 3 015 924 01 PLATE ORNAMENTAL 12 3 021 423 01 CUSHION PI WM EX655 51 3 704 197 01 SCREW IB LOCK 52 X 3374 062 1 BRACKET ASSY 53 3 016 085 01 BRACKET C 54 3 009 662 32 COVER A MD WM EX668 54 3 009 662 21 C...

Page 11: ...TANTALUM CHIP 2 2uF 20 10V C308 1 135 151 21 TANTALUM CHIP 4 7uF 20 4V C310 1 117 578 11 TANTAL CHIP 470uF 20 2 5V C311 1 115 156 11 CERAMIC CHIP 1uF 10V C312 1 165 128 11 CERAMIC CHIP 0 22uF 16V C313 1 135 151 21 TANTALUM CHIP 4 7uF 20 4V C314 1 135 201 11 TANTALUM CHIP 10uF 20 4V C315 1 115 156 11 CERAMIC CHIP 1uF 10V C316 1 107 826 11 CERAMIC CHIP 0 1uF 10 16V C317 1 107 826 11 CERAMIC CHIP 0 1...

Page 12: ...1 218 891 11 METAL GLAZE 68K 0 50 1 16W R302 1 216 837 11 METAL CHIP 22K 5 1 16W R303 1 216 825 11 METAL CHIP 2 2K 5 1 16W R304 1 218 295 11 METAL GLAZE 43K 5 1 16W R305 1 216 841 11 METAL CHIP 47K 5 1 16W R306 1 216 793 11 METAL GLAZE 4 7 5 1 16W R307 1 216 849 11 METAL CHIP 220K 5 1 16W R308 1 216 837 11 METAL CHIP 22K 5 1 16W R309 1 216 821 11 METAL CHIP 1K 5 1 16W R502 1 216 833 11 METAL CHIP ...

Page 13: ...RGER BC 7DY AEP FR 1 569 007 11 ADAPTOR CONVERSION 2P JEW 1 759 213 21 CASE BATTERY WM EX655 3 008 521 01 CASE BATTERY CHARGE 3 021 018 01 LABEL FRANCE French 3 021 018 11 LABEL FRANCE French 3 861 030 01 MANUAL INSTRUCTION JAPANESE ENGLISH KOREAN JEW 3 861 030 11 MANUAL INSTRUCTION ENGLISH FRENCH RUSSIAN AEP UK FR 3 861 030 21 MANUAL INSTRUCTION SPANISH GERMAN ITALIAN AEP 3 861 030 31 MANUAL INST...

Page 14: ... 26 WM EX655 EX668 9 923 312 11 Sony Corporation Personal A V Products Company 98C027551 1 Printed in Hangary 1998 3 Published by Quality Engineering Dept Shibaura ...

Page 15: ...MENT 1 File this Supplement with the Service Manual Subject r NO INTERCHANGEABILITY OF MOTORS DUE TO CHANGE OF MECHANISM DECK r CAUTION WHEN INSTALLING A NEW MOTOR r CHANGED PARTS LIST SPM 98008 AEP Model UK Model WM EX668 Tourist Model WM EX655 ...

Page 16: ...7 435 01 GEAR FR 120 3 007 427 01 SCREW IB LOCK 121 X 3374 094 1 CHASSIS S ASSY Y 122 3 007 455 01 SPRING R TORSION 124 3 007 456 01 SPRING N TORSION 134 HP901 1 500 280 11 HEAD MAGNETIC PLAYBACK M901 1 698 885 11 MOTOR PM901 1 454 674 31 SOLENOID PLUNGER 3 386 694 21 WASHER X 3372 852 4 FLYWHEEL N ASSY 3 016 696 01 GEAR FRN 3 335 797 01 SCREW M1 4 x 2 TOOTHED LOCK X 3374 420 1 CHASSIS S ASSY M 3 ...

Page 17: ...when installing a new motor X 3376 217 1 3 3 939 590 13 SCREW IB LOCK BLACK 7 3 939 590 18 SCREW IB LOCK SILVER BLUE ORANGE 20 7 3 939 590 19 SCREW IB LOCK BLACK 10 3 389 523 35 SCREW IB LOCK SILVER BLUE ORANGE 10 3 389 523 36 SCREW IB LOCK BLACK 3 704 197 93 SCREW M1 4 x 1 8 BLACK 3 704 197 41 SCREW M1 4 x 2 2 SILVER BLUE ORANGE 3 704 197 42 SCREW M1 4 x 2 2 LOCKING BLACK 3 704 197 61 SCREW M1 4 ...

Page 18: ...EXCEPT FR r CORRECTION EXPLODED VIEWS 9 923 312 81 Sony Corporation Personal A V Products Company 98J0251 1 Printed in Japan 1998 10 Published by Quality Engineering Dept Shibaura WM EX655 EX668 3 009 662 22 COVER A MD WM EX655 3 024 440 01 SHEET LIGHT INTERCEPTION 3 309 729 00 SHEET LEAF SW BLUE ORANGE 1 759 213 21 CASE BATTERY 8 953 219 90 HEADPHONE MDR ED132MP K SET Changed or added portion S90...

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