Sony Walkman WM-FX267, Service Manual

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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

mark

CF2

X2

Flexible Circuit Board Repairing

•

Keep the temperature of the soldering iron around 270 ˚ 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