Sony wm fx 277 service manual

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2 WM-FX277 Specifications ........................................................................... 1 1. SERVICING NOTE ...................................................... 3 2. GENERAL ...................................................................... 3 3. DISASSEMBLY 3-1. Cabinet (Front) ........................................................... 4 3-2. Main Board ................................................................. 4 3-3. Mechanism Deck ........................................................ 5 3-4. Belt, Capstan/reel Motor (M601), Magnetic Head (Playback) (HP601) ........................... 5 3-5. Cassette Holder ........................................................... 6 4. ADJUSTMENTS 4-1. Mechanical Adjustments ............................................ 7 4-2. Electrical Adjustments ................................................ 7 5. DIAGRAMS 5-1. Explanation of IC Terminals ..................................... 10 5-2. Block Diagram ........................................................... 11 5-3. Printed Wiring Boards -“ Main Section (Side A) -“ ... 12 5-4. Printed Wiring Boards -“ Main Section (Side B) -“ ... 13 5-5. Schematic Diagram ................................................... 14 6. EXPLODED VIEWS 6-1. Cabinet Section ......................................................... 17 6-2. Mechanism Deck Section (MF-WMFX241-114) ..... 18 7. ELECTRICAL PARTS LIST ................................... 19Flexible 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 dam- aged by heat. TABLE OF CONTENTS

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3 WM-FX277 SECTION 1 SERVICING NOTE In case of adjusting Tape Speed, you can easily to adjust RV601 by removing 7 claws on Window (LCD) and itself as shown in the figure. 1.Insert the precision screwdriver (Cover a point by cloth) in to the slit at claw. 2.Remove the window(LCD). Note: Be careful not to damage claws. Claws Window(LCD) Claws Claws RV601 SECTION 2 GENERAL This section is extracted from instruction manual. LOCATION AND FUNCTION OF CONTROLS