Sony icf sw40

Page 2

TABLE OF CONTENTS

Section Title Page

Specifications
Servicing Note~

1. GENERAL
Location of Controls~~~~ .... 3
Operating the Radio
Setting the Standby -
Setting the Sleep Timer
Using Other Functions ~ ..
Setting the Clock ...................................................... 6

2. DISASSEMBLY

2.1 Cabinet (Rear) Removal ....................................... 7

2-2. Key Board and Main Board Removal OOOOOOOOOOOOOOOOOOOOOOO 7
3. ELECTRICAL ADJUSTMENTS ~~~~~ 8
4. EXPLANATION OF IC TERMINALS ~ 11
5. DIAGRAMS

S-lr Printed Wiring Boards 13

5-2. Schematic Diagram 17
6. EXPLODED VIEW ------------------------------------------------ 22
7. ELECTRICAL PARTS LIST ................................... 23

SERVICING NOTE

Flexible Clrcult Board Repairing

0 Keep the temperature of the soldering iron around
270°C during repairing.

0 Do not touch the soldering iron on the same con-
ductor of the circuit board(within 3 times).

0 Be careful not to apply force on the conductor
when soldering or unsoldering.

Notes on chlp component replacement

0 Never reuse a disconnected chip component.
0 Notice that the minus side of a tantalum capacitor
may be damaged by heat.

Features

' FM stereo/ SW/ MW / LW portable receiver with
worldwide band coverage

. Quartz-controlled PLL (Phase Locked Loop)
synthesizer system using a microcomputer for
easy pinpoint tuning

- Presetting of up to 20 statioro for quick tuning

I Dual timer standby function to receive your
favorite broadcast at the desired time

- Sleep timer to turn the radio off automatically
after a Spedfied number of minutes

- FM stereo reception through stereo headphones
(not supplied)

0 HOW TO CHANGE THE CERAMIC FILTERS
This model is used two ceramic filters of CFZ, CF4.
You must use same type of color marked ceramic filters in
order to meet same specifications.
Therefore, the ceramic filter must change two pieces together
since its supply two pieces in one package as a spare pans.

mark Mark Irggsgicy
'4 red 10.7OMHz
CF2, 4 blue 1067MHz
orange 1073erlz

I I I black 10.64MHZ
white 10.76Ml-lz