Sony wm fx 269 service manual

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Ð 2 Ð TABLE OF CONTENTS 1. GENERAL .................................................................. 3 2. DISASSEMBLY ........................................................ 6 3. MECHANICAL ADJUSTMENTS ...................... 9 4. ELECTRICAL ADJUSTMENTS Tape Section .................................................................... 9 Tuner Section .................................................................. 10 5. DIAGRAMS 5-1. IC Pin Function Description ........................................... 12 5-2. Block Diagram ................................................................ 13 5-3. Printed Wiring Board ...................................................... 15 5-4. Schematic Diagram ......................................................... 19 6. EXPLODED VIEWS ................................................ 24 7. ELECTRICAL PARTS LIST ............................... 27 HOW TO CHANGE 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 it's supply two pieces in one package as a spare parts. Mark Center frequency red 10.70MHz blue 10.67MHz orange 10.73MHz black 10.64MHz white 10.76MHz markCF2 X2 Flexible Circuit Board Repairing ·Keep the temperature of the soldering iron around 270 û C dur- ing 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. SERVICING NOTES

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Ð 3 Ð SECTION 1 GENERAL This section is extracted from instruction manual.