Sony M450, M455 free download

File name Sony-M450_455 micro cass.pdf

M-450/455 SERVICE MANUAL Ver 1.1 2004.02 E Model East European Model M-450/455 Chinese Model M-450 Photo : M-450 Model Name Using Similar Mechanism Tape Transport Mechanism Type New MZ-455-99 SPECIFICATIONS Tape (MICRCCASSETTE)TM(normal position type) Recording system 2-track 1-channel monaural Speaker Approx. 3.6 cm (1 17 / 16 in.) dia. Tape speed 2.4 cm / s (15 /16 ips), 1.2 cm/s (15 / 32 ips) Frequency range 300 - 4 000 Hz (with TAPE SPEED switch at 2.4 cm/s) Output Earphone jack (minijack) for 8 - 300 earphone Power output (at 10% harmonic distortion) 250 mW Power requirements 3 V DC batteries R6 (size AA) Ч 2 / External DC 3V power sources Dimensions (w/h/d) Approx. 62.2 Ч 119.1 Ч 25.4 mm (2 1 /2 Ч 4 3 /4 Ч 1 in.) incl. projecting parts and controls Mass Approx. 109 g (3.9 oz) (main unit only) Supplied accessories Microcassette tape MC-30 (1) (M-450 : EE/M-455 : E) Design and specifications are subject to change without notice. MICROCASSETTETM-CORDER 9-873-588-02 2004B02-1 © 2004.02 Sony Corporation Personal Audio Company Pubulished by Sony Engineering Corporation M-450/455 TABLE OF CONTENTS Specifications ... 1 1. 2. GENERAL ... 3 DISASSEMBLY 2-1. Cassette Holder Asssy ... 2-2. Cabinet (Rear) ... 2-3. Cabinet (Front) ... 2-4. Main Board, Mechanism Deck ... 2-5. Head, Magnetic (HRPE901) ... 2-6. Motor (M901) ... 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 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 damaged by heat. 4 4 5 5 6 6 3. ADJUSTMENTS 3-1. Mechanical Adjustments ... 7 3-2. Electrical Adjustments ... 7 DIAGRAMS 4-1. Block Diagrams ... 9 4-2. Printed Wiring Boards ... 10 4-3. Schematic Diagram ... 11 EXPLODED VIEWS 5-1. Cabinet (Rear) Section ... 13 5-2. Cabinet (Front) Section ... 14 5-3. Mechanism Deck Section ... 15 ELECTRICAL PARTS LIST ... 16 4. 5. 6. 2 M-450/455 SECTION 1 GENER