Sony wm fx 173 service manual

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Ñ 2 Ñ TABLE OF CONTENTS Flexible Circuit Board Repairing ¥ Keep the temperature of the soldering iron aroud 270û 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. SECTION 1 GENERAL 1. GENERAL ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááááááá 2 2. DISASSEMBLY 2-1. Cabinet (Front) Assy ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááá 3 2-2. Main Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááááááááá 4 2-3. Cassette Lid ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááááááááá 4 2-4. Mechanism Deck ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááá 5 2-5. Belt, Motor (Reel/Capstan) áááááááááááááááááááááááááááááááááááááááááááááááá 5 3. MECHANICAL ADJUSTMENT áááááááááááááááááááááááááááááá 6 4. ELECTRICAL ADJUSTMENT áááááááááááááááááááááááááááááááá 6 5. DIAGRAMS 5-1. Block Diagram ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááá 8 5-2. Schematic Diagram (FX171/FX177 Models) áááááááááááááááááá 10 5-3. Printed Wiring Board (FX171/FX177 Models) áááááááááááááááá 13 5-4. Printed Wiring Board (FX173 Model) ááááááááááááááááááááááááááááá 17 5-5. Schematic Diagram (FX173 Model) áááááááááááááááááááááááááááááááá 21 5-6. IC Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááá 24 6. EXPLODED VIEWS 6-1. Cabinet Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááá 25 6-2. Main Board Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááá 27 6-3. Mechanism Section-1 ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááá 28 6-4. Mechanism Section-2 ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááá 29 7. ELECTRICAL PARTS LIST ááááááááááááááááááááááááááááááááááá 30 This section is extracted from instruction manual. · LOCATION OF CONTROL

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Ñ 3 Ñ SECTION 2 DISASSEMBLY Note :Follow the disassembly procedure in the numerical order given. BCDE F G H I J K L A Cassette lid Cabinet (front) assy 1 Two screws [screw (B 1.7 ´ 9), tapping] 2-1. CABINET (FRONT) ASSY 2 Insert the precision screwdriver (1.4 mm flat-blade) into the slit at claw A and release the claw. 3 Remove the cabinet (front) assy. (Release all claws B to L in alphabetical order.) · This set can be disassembled in the order shown below. 2-1. CABINET (FRONT) ASSY 2-2. MAIN BOARD 2-3. CASSETTE LID2-4. MECHANISM DECK 2-5. BELT, MOTOR (REEL/CAPSTA N)