MICROFILM
ICF-C113/C113L/C113V
SERVICE MANUAL
ICF-C113
FM/AM PLL SYNTHESIZED CLOCK RADIO
ICF-C113L
FM/MW/LW PLL SYNTHESIZED CLOCK RADIO
ICF-C113V
TV/WEATER/FM/AM PLL
SYNTHESIZED CLOCK RADIO
SPECIFICATIONS
US Model
ICF-C113V
E Model
Australian Model
ICF-C113
UK Model
ICF-C113L
AEP Model
ICF-C113/C113L
Time display :
US, UK, Australian model
12hour
EXCEPT US, UK, Australian model
24hour
Frequency range :
US model
Band
ICF-C113V
Channel step
FM
87.5 108 MHz
0.1MHz
AM
530 1,710 kHz
10kHz
TV
2 13CH
WEATHER
1 5CH
EXCEPT US model
Band
ICF-C113
ICF-C113L
Channel step
FM
87.5 108 MHz
87.5 108 MHz 0.05MHz*
AM (MW) 531 1,602 kHz
531 1,602 kHz
9kHz
LW
153 279 kHz
9kHz
FM
87.5 108 MHz
0.1MHz
AM
530 1,610 kHz
10kHz
* The frequency display is up or down by steps of 0.1MHz.
(Example : Frequency 88.05 MHz is displayed as "88.0
MHz".)
Speaker
Approx. 6.6 cm (2 5/8 in) dia.
Power output
130 mW (at 10% harmonic distortion)
Power requirements
US model :120V AC, 60Hz
EXCEPT US model : 220 230V AC, 50Hz
Dimensions
Approx. 119 x 118 x 129.5 mm (w/h/d)
(4 3/4 x 4 3/4 x 5 1/8 in) incl. projecting parts and controls
Mass
Approx. 630 g (1 lb 6.2 oz)
Approx. 670 g (1 lb 7.6 oz) : ICF-C113L (UK model)
Design and specifications are subject to change without notice.
Ver 1.1 1998.11
With SUPPLEMENT 1 (9-925-933-81)
2
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
! OR DOTTED LINE WITH
MARK
! 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.
TABLE OF CONTENTS
Specifications ........................................................................... 1
1. GENERAL
Location and Function of Controls .................................... 3
2. DISASSEMBLY
2-1. Cabinet (Upper), Front Panel Assy Removal ............. 4
3-2. Key Board, Main Board,
Power Transfomer Removal ...................................... 4
3. ELECTRICAL ADJUSTMENT ................................. 5
4. DIAGRAMS
4-1. Explanation of IC Terminals ....................................... 8
4-2. Printed Wiring Boards (ICF-C113/C113V) ................ 9
4-3. Schematic Diagram (ICF-C113/C113V) ................... 11
4-4. Printed Wiring Boards (ICF-C113L) ........................ 13
4-5. Schematic Diagram (ICF-C113L) ............................ 15
5. EXPLODED VIEW ...................................................... 18
6. ELECTRICAL PARTS LIST .................................... 20
US model
: AC : 120V
/60Hz 5W
AEP, UK, Italian, E, Swiss,
Australian model
: AC : 220 230V
/50Hz 5W
SAFETY CHECK-OUT (US model)
After correcting the original service problem, perform the
following safety check before releasing the set to the customer :
Check the antenna terminals, metal trim, "metallized" knobs,
screws, and all other exposed metal parts for AC leakage. Check
leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part
having a return to chassis, must not exceed 0.5mA (500
microampers).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers' instructions to
use these instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOMor battery-operated AC voltmeter. The "limit" indica-
tion is 0.75V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are
examples of a passive VOM that is suitable. Nearly all
battery operated digital multimeters that have a 2V AC range
are suitable. (See Fig. A)
MODEL NO.
MODEL IDENTIFICATION
Model Number Portion
Carved on lower cabinet
ICF-C113
ICF-C113L
ICF-C113V
· HOW TO CHANGE THE CERAMIC FILTERS
This model is used two ceramic filters of CF2 and CF3.
You must use same type of color marked ceramic filters in
order to meet same specifications.
Therefore, the ceramic filter must changed two pieces together
since it's supply two pieces in in package as a spare parts.
AC
voltmeter
(0.75V)
To Exposed Metal
Parts on Set
Earth Ground
0.15
µF
1.5k
Fig. A. Using an AC voltmeter to check AC leakage.
mark
mark
CF3
CF2
red
10.70MHz
blue
10.67MHz
orange
10.73MHz
black
10.64MHz
white
10.76MHz
Mark
Center
frequency
3
SECTION 1
GENERAL
LOCATION AND FUNCTION OF CONTROL
ICF-C113/C113L
ICF-C113V
4
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CABINET (UPPER), FRONT PANEL ASSY REMOVAL
2-2. KEY BOARD, MAIN BOARD, POWER TRANSFOMER REMOVAL
1 Screws (+P 3x35)
1 Screws (+P 3x35)
2 Screw (+BTP 3x12)
5
5
6
3
4
Front panel assy
Button
Cabinet (Upper)
3 CN1 (2/2)
(2P)
2 CN1 (1/2) (3P)
8 Screw
!º Screws
!¡
!TM
!
9
6
4
4
6
6
4
4
7
1
Key board
Chassis
Main board
Cabinet (Lower)
Power Transformer
!¢
!£
5
Cord stoper
Holder (Transformer)
Shield case (Transformer)
Shield plate (P/T)
5
SECTION 3
ELECTRICAL ADJUSTMENTS
AM Section
Band button : AM (ICF-C113/C113V)
: MW or LW (ICF-C113L)
Volume
: MAX
FM Section
Band button : FM
: TV (ICF-C113V)
Volume
: MAX
[MAIN BOARD] (Component side)
· Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
(
) : AEP, UK, Italian, Australian, E, Swiss model only
AM IF ALIGNMENT
Adjust for a maximum reading on level meter.
T2
450kHz
AM <MW> FREQUENCY COVERAGE ADJUSTMENT
Adjust parts
Frequecy display
Reading on digital
voltmeter
L6
530kHz
(531kHz)
2.65
± 0.1V (ICF-C113/C113V)
2.65
± 0.1V (ICF-C113L)
Less than 10.0V
confirmation
1,710kHz (1,602kHz)
Standard 9.5V
(Less than 9.5V)
(Standard 9.0V)
AM <MW> TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 :ICF-C113/C113V
L31 :ICF-C113L
580kHz
(621kHz)
CT3
1,490kHz
(1,404kHz)
ICF-C113L
LW FREQUENCY COVERAGE ADJUSTMENT
Adjust parts
Frequecy display
Reading on digital
voltmeter
CT7
153kHz
More than 2.25V
(
± 0.05V)
confirmation
279kHz
Less than 9.5V
(Standard 9.0V)
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 2
162kHz
CT2
243kHz
ICF-C113/C113L
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust parts
Frequecy display
Reading on digital
voltmeter
L5
87.5MHz
3.5
± 0.1V
confirmation
108.0MHz
Less than 11.8V
(Standard 10.5V)
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4 2
87.5MHz
CT5
108.0MHz
AM RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
Put the lead-wire
antenna close to
the set.
FM RF signal
generator
22.5kHz frequency
deviation by 400Hz signal.
Output level :
as low as possible
set
FM ANT IN
0.01 F
µ
set
8
speaker terminal
level meter
L6
CT7
SW1
JW5 (GND)
JW9 (VT)
digital
voltmeter