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Model Name Using Similar Machanism

WM-FX123

Tape Transport Mechanism Type

MF-WMFX103-48CY

MICROFILM

WM-PA1

SERVICE MANUAL

RADIO CASSETTE PLAYER

SPECIFICATIONS

E Model

Radio Section

FM

:87.6 – 108MHz

AM :530 – 1,710kHz

Power Requirements

3V DC Batteries AA (R6) x 2
External DC 3V power sources

Battery Life

(approximate hours when using the batteries specified below)

Battery

Playback

Radio

Sony Alkaline LR6 (SG)

16 hours

48 hours

Sony R6P (SR)

4.5 hours

16 hours

Dimensions

94.2x 119.0 x 36.0 mm

Mass

260g incl. batteries and tape

Supplied Accessories

• Stereo headphones (1)
• Belt clip (1)

Design and specifications are subject to change without notice.

Summary of Contents for WM-PA1

Page 1: ...r Requirements 3V DC Batteries AA R6 x 2 External DC 3V power sources Battery Life approximate hours when using the batteries specified below Battery Playback Radio Sony Alkaline LR6 SG 16 hours 48 hours Sony R6P SR 4 5 hours 16 hours Dimensions 94 2x 119 0 x 36 0 mm Mass 260g incl batteries and tape Supplied Accessories Stereo headphones 1 Belt clip 1 Design and specifications are subject to chan...

Page 2: ... conductor of the circuit board within 3 times Be careful not to apply force on the conductor when soldering or unsoldering Notes on chip component replacement Never reuse a disconnected chip component Notice that the minus side of a tantalum capacitor may be dam aged by heat TABLE OF CONTENTS SECTION 1 GENERAL LOCATION AND FUNCTION OF CONTROLS HOW TO CHANGED THE CERAMIC FILTERS This model is used...

Page 3: ...ET REAR REMOVAL 2 2 CABINET FRONT REMOVAL r The equipment can be removed using the following procedure Main board Mechanism deck Cabinet Front Cabinet Rear Cassette holder sub assy Switch board Set Cassette holder sub assy Cabinet Rear 1 2 2 3 3 7 7 7 7 7 4 4 6 6 6 5 8 Cabinet Front 1 Flexible board 2 ...

Page 4: ...lexible board Cassette holder sub assy 2 4 1 1 Attach the torsion spring as shown in the figure 2 Insert the torsion spring in the hole as shown in the figure 3 Lift the torsion spring in the arrow direction and hook it properly NOTE FOR INSTALLATION The torsion spring will be removed together with the cassette lid that preform the following for installation r TORSION SPRING ...

Page 5: ... AM Frequency Coverage Adjustment L3 FM Frequency Coverage Adjustment CT1 3 FM Frequency Coverage Adjustment T1 AM IF Alignment L1 AM Tracking Adjustment CT1 1 AM Tracking Adjustment L2 FM Tracking Adjustment CT1 2 FM Tracking Adjustment SECTION 3 ADJUSTMENTS 3 1 MECHANICAL ADJUSTMENTS PRECAUTION 1 Clean the following parts with a denatured alcohol moistened swab playback head pinch roller capstan...

Page 6: ...ET OUT MPX IN LPF1 LPF2 VCO L OUT R OUT WM PA1 Note All capacitors are in µF unless otherwise noted pF µµF 50 WV or less are not indicated except for electrolytics and tantalums All resistors are in Ω and 1 4 W or less unless otherwise specified internal component B Line adjustment for repair Power voltage is dc 3V and fed with regulated dc power supply from external power voltage jack J301 Voltag...

Page 7: ... 910 896 01 GROUND MOTOR 3 3 933 647 01 BUTTON STOP 4 3 933 644 01 BUTTON FF 5 3 933 643 01 BUTTON REW 6 3 933 646 01 BUTTON PLAY 7 3 318 382 01 SCREW 1 7X3 TAPPING 8 3 017 324 01 RETAINER SPEAKER 9 1 667 057 11 FLEXIBLE BOARD 10 1 667 779 11 SWITCH BOARD 11 X 3374 461 1 HOLDER SUB ASSY CASSETTE 12 3 017 323 01 KNOB SW 13 3 018 931 01 SPRING TORSION 14 3 937 353 01 CABINET FRONT CF O 15 3 364 675 ...

Page 8: ...ASSIS ASSY 56 3 354 868 01 BELT 57 3 352 758 21 SCREW M1 7 TOOTHED LOCK 58 3 909 727 01 GEAR REVERSE 59 3 364 320 01 GEAR S REEL 60 3 910 640 01 GEAR T REEL 61 3 321 483 11 RING RETAINING 62 X 3367 905 1 CLUTCH ASSY HP901 1 500 115 11 HEAD MAGNETIC PLAYBACK M901 1 698 353 11 MOTOR DC REEL CAPSTAN 5 2 MECHANISM DECK SECTION MF WMFX103 48CY 51 52 53 54 55 56 57 58 59 60 61 62 HP901 not supplied M901...

Page 9: ...11 CERAMIC CHIP 1uF 10V C105 1 163 117 00 CERAMIC CHIP 100PF 5 50V C106 1 163 009 11 CERAMIC CHIP 0 001uF 10 50V C201 1 163 007 11 CERAMIC CHIP 680PF 10 50V C202 1 126 153 11 ELECT 22uF 20 6 3V C203 1 163 019 00 CERAMIC CHIP 0 0068uF 10 50V C204 1 164 234 11 CERAMIC CHIP 1uF 10V C205 1 163 117 00 CERAMIC CHIP 100PF 5 50V C206 1 163 009 11 CERAMIC CHIP 0 001uF 10 50V C301 1 164 505 11 CERAMIC CHIP ...

Page 10: ...100K 5 1 10W R403 1 216 113 00 METAL CHIP 470K 5 1 10W R404 1 216 049 91 METAL CHIP 1K 5 1 10W R405 1 216 057 00 METAL CHIP 2 2K 5 1 10W R406 1 216 049 91 METAL GLAZE 1K 5 1 10W R407 1 216 057 00 METAL CHIP 2 2K 5 1 10W R408 1 216 089 91 METAL GLAZE 47K 5 1 10W R409 1 216 089 91 METAL GLAZE 47K 5 1 10W R410 1 216 001 00 METAL CHIP 10 5 1 10W R411 1 216 097 91 METAL GLAZE 100K 5 1 10W R601 1 217 90...

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