Sony icf sw 12 service manual

Page 2

TABLE OF CONTENTS 0 HOWTO CHANGED THE CERAMIC FILTERS
This model is used two ceramic filters of CH and CF3.
You must used same type of color marked ceramic filters in

SpeCification ...................................................................... 1 order to meet same spectfications.
Therefore, the ceramic filter must changed two pieces together
1 - GENERAL Since it's supply two pieces in one package as a spare parts.
Location and Function of Controls t . . . r .. .i r. . i. r . . 3
mark [k Mark Center lequency
2. DISASSEMBLY '8 red 10 mm
2-1 Cabinet Lower (Radio) Removal i. ii . 5 '
2<2r ChaSSis Assy Removal i r . . r . . ii r . 5 blue 10 67MHZ
21 Main Board Removal. . . . i . . . .. . .. .. 6 orange 10.73MHz
2<4 Holder (Antenna) Removal . .. 6 black 10.64MHZ
2-5 Cabinet Rear (Clock), ,
Microcomputer Board Removal i ., . . . 7 whl'te 10'76MH2
3. DIAL POINTER INSTALLATION . i ... 8
4. ELECTRICAL ADJUSTMENTS ................................ 9
5. EXPLANATION OF IO TERMINALS ....................... 12
6. DIAGRAMS
6»l . Printed Wiring Boards 13
6-2. Schematic Diagram .. . 15
7. EXPLODED VIEWS
7-1. Cabinet (Clock) Section 18
7-2. Cabinet (Radio) Section or . i . . 19
8. ELECTRICAL PARTS LIST .................................. . 20
Flexible Circuit Board Repairing Notes on chip component replacement
' Keep the temperature of the soldering iron around 270°C during - Never reuse a disconnected chip component
repairing. ' Notice that the minus side of a tantalum capacmor may be dam-
- Do not touch the soldering iron on the same conductor of the aged by heat.

Circuit board (Within 3 times)
- Be careful not to apply force on the conductor when soldering or
unsoldenng