Sony ICF-403-L Service manual
ICF-403L
SERVICE MANUAL
Ver 1.0 1999.07
SPECIFICATIONS
East European model
AEP model
AEP Model
MICROFILM
FM/MW/LW 3 BAND RADIO
TABLE OF CONTENTS
Specifications ........................................................................... 1
1. GENERAL
Location and Function of Controls .................................... 2
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.
2. DISASSEMBLY
2-1. Cabinet (Rear)............................................................. 3
2-2. Cabinet (Front) ........................................................... 3
2-3. Main Board, Chassis................................................... 4
3. DIAL POINTER INSTALLATION........................... 5
4. ELECTRICAL ADJUSTMENTS............................. 6
5. DIAGRAMS
5-1. Printed Wiring Boards ................................................ 7
5-2. Schematic Diagram..................................................... 9
6. EXPLODED VIEWS...................................................11
7. ELECTRICAL PARTS LIST................................... 13
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be damaged by heat.
LOCATION AND FUNCTION OF CONTROLS
Earphone jack (@)
DC IN 4.5V
SECTION 1
GENERAL
– 2 –
DISASSEMBLY
)
r
The equipment can be removed using the following procedure.
SECTION 2
Set
Cabinet (Rear)
Cabinet (Front)
Main board, Chassis
Note : Follow the disassembly procedure in the numerical order given.
2-1. CABINET (REAR)
1
Screws
+BTP 3x12
3
1
Screws
+BTP 3x12
Cabinet (rear)
Lug, 3
4
Screw
+P 2.6x8
2-2. CABINET (FRONT)
Main board
Chassis
2
Claws
2
3
Remove solder
Brown
(+)
Cabinet (front)
1
Screw
+P 2.6x8
Black (–)
– 3 –
Brown (+)
Cabinet (front
Black (–)
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