Sony ICF-C411 Service manual

ICF-C411
SERVICE MANUAL
Ver 1.0 2001.03
SPECIFICATIONS
Time display
24-hour system
Frequency range
FM: 87.5 - 108 MHz AM: 530 - 1710 kHz
Speaker
Approx. 6.6 cm (2 5/8 inches) dia., 8 ohm
Power output
120 mW (at 10% harmonic distortion)
Power requirements
220 - 230 V AC, 50 Hz For the power back-up function: 9 V DC, one 6F22 battery
Battery life
Approx. 20 hours (for clock backup), using Sony S-006P (6F22) battery
Dimensions
Approx. 215 × 106.4 × 99.8 mm (w/h/d)
1/2 × 4 1/4 × 4 inches) incl. projecting parts and controls
(8
Mass
Approx. 780 g (1 lb 11.5 oz) not incl. battery
Design and specifications are subject to change without notice.
Singapore Model
9-873-096-11
2001C0400-1
© 2001.3
FM/AM CLOCK RADIO
Sony Corporation
General Engineering Dept.
1
ICF-C411
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.

TABLE OF CONTENTS

1. SERVICING NOTES
1-1. Cord Dressing (Power Cord) ............................................... 3
1-2. Pointer Alignment ............................................................... 3
2. GENERAL............................................................................ 4
3. DISASSEMBLY
3-1. Cabinet (Upper) Section ...................................................... 5
3-2. Main Board ......................................................................... 6
3-3. Key Board, LED Board ....................................................... 6
4. ELECTRICAL ADJUSTMENTS................................... 7
5. DIAGRAMS
5-1. Circuit Boards Location ...................................................... 9
5-2. Block Diagram .................................................................. 10
5-3. Printed Wiring Boards – Main, Power Section – .............. 11
5-4. Printed Wiring Boards – Key, LED Section –................... 12
5-5. Schematic Diagram ........................................................... 13
6. EXPLODED VIEWS
6-1. Cabinet (Upper) Section .................................................... 14
6-2. Chassis Section ................................................................. 15
6-3. Cabinet (Lower) Section ................................................... 16
7. ELECTRICAL PARTS LIST......................................... 17
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
2
d
1-1. CORD DRESSING
(POWER CORD)
1) Set the power cord as shown in the figure.
ICF-C411
SECTION 1

SERVICING NOTES

power cord
1-2. POINTER ALIGNMENT
7
screws (P 3x10)
6
MAIN board
4
1
chassis
3
gear (VC)
pointer
5
pointer
Align is the projection.
gear (VC)
2
pointer retainer boar
8
knob (tuning)
chassis
3
ICF-C411
SECTION 2

GENERAL

This section is extracted from instruction manual.
4
SECTION 3
)

DISASSEMBLY

The equipment can be removed using the following procedure.
Set Cabinet (Upper) Section Main Board Key Board, LED Board
Note : Follow the disassembly procedure in the numerical order given.
3-1. CABINET (UPPER) SECTION
5
ICF-C411

cabinet (upper) section

4
CN301
2
screws (P 3x14)
3
screw (P 3x14)
1
screws (P 3x14
5
ICF-C411
3-2. MAIN BOARD
9
screws (P 3x10)
7
CN1
6
knob (volume)
1
8
Removal the solder
3-3. KEY BOARD, LED BOARD
0

MAIN board

4
2
screw (P 3x10)
claw
3
3
claw
5
claw
screw (P 3x10)
2
KEY board
4
LED board
5
LED101
1
screw (P 3x10)
6
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