Sony WM-FS421 free download

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WM-FS421 SERVICE MANUAL Ver 1.0 2001. 04 E Model Model Name Using Similar Mechanism Tape Transport Mechanism Type NEW MF-WMFS421-114 SPECIFICATIONS · Frequency range FM: 87.5 - 108 MHz AM: 530 - 1 710 kHz (North, Central and South America) 531 - 1 602 kHz (Other countries) · Power requirements 3 V DC batteries R6 (size AA) Ч 2 · Dimensions (w/h/d) Approx. 107.3 Ч 123.3 Ч 51.5 mm (4 1/4 Ч 4 7/8 Ч 2 1/8 inches), excluding projecting parts and controls · Mass Approx. 282 g (10.0 oz) (main unit only) · Supplied accessories Stereo headphones or earphones (1) Belt clip (1) Design and specifications are subject to change without notice. Battery life (approximate hours) Tape playback Sony alkaline LR6 (SG)** Sony R6P (SR) 32 9 (JEITA*) Radio reception 40 14 * Measured value by the standard of JEITA (Japan Electronics and Information Technology Industries Association). (Using a Sony HF series cassette tape) **When using Sony LR6 (SG) "STAMINA" alkaline dry batteries (produced in Japan). Note · The battery life may be shorter depending on the operating condition, the surrounding temperature and battery type. RADIO CASSETTE PLAYER 9-873-121-11 2001D1600-1 © 2001.4 Sony Corporation Personal Audio Company Shinagawa Tec Service Manual Production Group WM-FS421 TABLE OF CONTENTS 1. GENERAL ·········································································· 2 2. SERVICE NOTE ······························································· 3 3. DISASSEMBLY 3-1. 3-2. 3-3. 3-4. 3-5. Main Assy ······································································ 4 Chassis Sub Assy ··························································· 5 MAIN Board and Mechanism Deck ······························ 5 Belt ················································································ 6 Head, Magnetic (HP701) ··············································· 6 7. MEXPLODED VIEWS 7-1. Cabinet Assy Section ··················································· 15 7-2. MAIN Board Section ·················································· 16 7-3. Mechanism Deck Section-1 (MF-WMFS421-114) ·················································· 17 7-4. Mechanism Deck Section-2 (MF-WMFS421-114) ·················································· 18 8. ELECTRICAL PPARTS LIST ···································· 19 4. MECHANICAL ADJUSTMENT ·································· 7 5. ELECTRICAL ADJUSTMENT ···································· 7 6. DIAGRAMS 6-1. 6-2. 6-3. 6-4. 6-5. IC Block Diagrams ······················································ 10 Block Diagram ···························································· 11 Printed Wiring Board ··················································· 12 Schematic Diagram ····················································· 13 IC Pin Function Description ········································ 14 SECTION 1 GENERAL VOLUME MENU SET i ENTER PRESET +/­ x M N m Y (FS422ST/FS421 only) Y (FS422ST/FS421 uniquement) OFF HOL