Read Sony ICF-C112 (serv.man2) Service Manual online
1
SERVICE MANUAL
E Model
ICF-C112
FM/AM CLOCK RADIO
SPECIFICATIONS
Ver 1.0 2003. 03
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-877-123-01
2003C0400-1
© 2003. 03
Time display:
12-hour system
Frequency range:
FM: 87.5 - 108 MHz
AM: 530 - 1710 kHz
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:
120 V AC, 60 Hz
For the power backup function: 9 V DC, one 6F22 battery
For the power backup function: 9 V DC, one 6F22 battery
Battery life:
Approx. 14 hours, using Sony 006P (6F22) battery
Dimensions:
Approx. 135
×
100
×
130 mm (w/h/d)
(5
3/8
×
4
×
5
1/8
inches) incl. projecting parts and controls
Mass:
Approx. 570 g (1 lb 4 oz) not incl. battery
Design and specifications are subject to change without notice.
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TABLE OF CONTENTS
1. SERVICING NOTES
1-1. Cord Dressing (Power Cord) ............................................... 3
1-2. Pointer Alignment ............................................................... 3
1-2. Pointer Alignment ............................................................... 3
2. GENERAL
Installing the Battery ............................................................... 4
Setting the Clock ..................................................................... 4
Operating the Radio ................................................................. 4
Setting the Alarm ..................................................................... 4
Setting the Sleep Timer ........................................................... 4
Setting the Clock ..................................................................... 4
Operating the Radio ................................................................. 4
Setting the Alarm ..................................................................... 4
Setting the Sleep Timer ........................................................... 4
3. DISASSEMBLY
3-1. Panel (Front) ........................................................................ 5
3-2. Cabinet (Upper) Single Assy ............................................... 6
3-3. Main Board Section ............................................................ 6
3-4. Main Board, LED101, Switch Board .................................. 7
3-2. Cabinet (Upper) Single Assy ............................................... 6
3-3. Main Board Section ............................................................ 6
3-4. Main Board, LED101, Switch Board .................................. 7
4. ELECTRICAL ADJUSTMENTS
................................... 8
5. DIAGRAMS
5-1. Block Diagram .................................................................. 11
5-2. Printed Wiring Boards ....................................................... 12
5-3. Schematic Diagram ........................................................... 13
5-4. IC Block Diagrams ............................................................ 14
5-2. Printed Wiring Boards ....................................................... 12
5-3. Schematic Diagram ........................................................... 13
5-4. IC Block Diagrams ............................................................ 14
6. EXPLODED VIEWS
6-1. Cabinet (Upper) Section .................................................... 15
6-2. Main Board Section .......................................................... 16
6-2. Main Board 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.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
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.
aged by heat.
ICF-C112
3
ICF-C112
SECTION 1
SERVICING NOTES
1-1. CORD DRESSING
(POWER CORD)
1) Set the power cord as shown in the figure.
2) Mount the chassis with power cord retainer
2) Mount the chassis with power cord retainer
board and screws (P 3
×
10).
Note: Tighten completely the screws (P 3
×
10).
1-2. POINTER ALIGNMENT
screw P 3x10
power cord retainer board
power cord
6
P 3x10
4
3
1
pointer
2
knob (tuning)
5
MAIN board
chassis
4
ICF-C112
SECTION 2
GENERAL
This section is extracted
from instruction manual.
from instruction manual.