Sony wm fx 451 service manual
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Extracted text from sony wm fx 451 service manual (Ocr-read)
Page 1
Ð 2 Ð 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 dam- aged by heat. TABLE OF CONTENTS Specifications ........................................................................... 1 1. GENERAL Location of parts and controls ............................................ 3 2. DISASSEMBLY 2-1. Cabinet (Rear) Sub Assy Removal ............................. 4 2-2. Main Board Removal ................................................. 5 2-3. Mechanism Deck Removal ......................................... 5 2-4. Holder, Cassette Assy Removal .................................. 6 2-5. Display Board Removal ............................................. 6 3. ADJUSTMENTS 3-1. Mechanical Adjustments ............................................ 7 3-2. Electrical Adjustments ................................................ 7 4. DIAGRAMS 4-1. Explanation of IC Terminals ..................................... 10 4-2. Block Diagram ........................................................... 11 4-3. Printed Wiring Boards .............................................. 13 4-4. Schematic Diagram ................................................... 17 5. EXPLODED VIEWS 5-1. Cabinet Section ......................................................... 23 5-2. Mechanism Section (MF-WMFX453-114) .............. 24 6. ELECTRICAL PARTS LIST ................................... 25 mark mark CF2 X2 Mark Center Frequency red 10.70MHz blue 10.67MHz orange 10.73MHz black 10.64MHz white 10.76MHz ¥ HOW TO CHANGED THE CERAMIC FILTERS This model is used two ceramic filters of CF2 and X2. You must used same type of color marked ceramic filters in order to meet same specifications. Therefore, the ceramic filter must changed two pieces together since itÕs supply two pieces in one package as a spare parts
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Ð 3 Ð SECTION 1 GENERAL LOCATION OF PARTS AND CONTROLS This section is extracted from instruction manual. ¥ Abbreviation FR : French E : Radio section : FM MONO/ST switch 7E : Radio section : DX/LOCAL switch