Sony ICF-C112 User manual

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
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: 9V 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.

2
TABLE OF CONTENTS
1. SERVICING NOTES
1-1. Cord Dressing (Power Cord)............................................... 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
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
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
6. EXPLODED VIEWS
6-1. Cabinet (Upper) Section.................................................... 15
6-2. Main Board Section .......................................................... 16
7. ELECTRICAL PARTS LIST ........................................ 17
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON 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.
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.
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
board and screws (P 3 ×10).
Note: Tighten completely the screws (P 3 ×10).
1-2. POINTER ALIGNMENT
screw P 3x10
power cord retainer boar
d
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.

5
ICF-C112
Note : This set can be disassemble according to the following sequence.
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. PANEL (FRONT)
3-1. PANEL (FRONT)
(Page 5)
SET
3-2. CABINET (UPPER) SINGLE ASSY
(Page 6)
3-3. MAIN BOARD SECTION
(Page 6)
3-4. MAIN BOARD, LED101, SWITCH BOARD
(Page 7)
1 P 2.6x8
2
3
panel (front)
claws
claws

6
ICF-C112
3-2. CABINET (UPPER) SINGLE ASSY
3-3. MAIN BOARD SECTION
1 P 3x30
2 P 3x30
3
4
cabinet (upper) single ass
y
3 P 3x10
1 Removal the solders.
2 CN1
4 MAIN board section

7
ICF-C112
3-4. MAIN BOARD, LED101, SWITCH BOARD
4 P 3x10
1 P 3x10
claw
claw
6 MAIN board
2 SWITCH boar
d
5
7
Removal the solders.
3 Removal the solders.
8 LED101

8
ICF-C112
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2 CT6
86.5 MHz 109.5 MHz
FM TRACKINGADJUSTMENT
Adjust for a maximum reading on level meter.
L1 CT5
86.5 MHz 109.5 MHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455 kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 CT4
515 kHz 1,750 kHz
AM TRACKINGADJUSTMENT
Adjust for a maximum reading on level meter.
L4 CT3
600 kHz 1,400 kHz
FM SECTION 0 dB = 1 µV
Setting:
BAND switch: FM
VOLUME control: MIN
AM SECTION
Setting:
BAND switch: AM
VOLUME control: MIN
SECTION 4
ELECTRICAL ADJUSTMENTS
•Connecting Level Meter (FM and AM)
Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally done
by the trimmer capacitors.
speaker terminal
set
16
Ω
level meter
(range: 0.5–5 V ac
)
Adjustment Location: See page 9.
FM lead wire
antenna terminal
0.01
µ F
FM RF signal
generator
400Hz, 30% FM modulation
frequency deviation
± 22.5kHz
Output level:as low as possible
set
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
400Hz, 30%
AM modulation
Output level:as low as possible

9
ICF-C112
Adjustment Location:
RV1
CV1
TUNING
L4
L1
L2
L3
CT6 CT4
CT5 CT3
SP1
(SPEAKER)
SP1 +
+
FM
LEAD WIRE
ANTENNA
L4, CT3
AM
TRACKING
ADJ
L1, CT5
FM
TRACKIN
G
ADJ
L2, CT6
FM FREQUENCY
COVERAGE ADJ
L3, CT4
AM FREQUENCY
COVERAGE ADJ
S1
BAND
FM
AM
T1
T1
AM IF
ADJ

10
ICF-C112 SECTION 5
DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
Common Note on Schematic Diagram:
•All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
•All resistors are in Ωand 1/4W or less unless otherwise
specified.
•f: internal component.
•C: panel designation.
•A: B+ Line.
•H: adjustment for repair.
•Total current is measured with no-signal.
•Power voltage is dc 9V and fed with regulated dc power
supply from battery terminal.
•Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
():AM
•Voltagesare takenwith a VOM (Inputimpedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
•Signal path.
F: FM
f: AM
Note: The components identified by mark 0or dotted line
with mark 0are critical for safety.
Replace only with part number specified.
Common Note on Printed Wiring Boards:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•f: internal component.
•: Pattern from the side which enables seeing.

ICF-C112
11 11
5-1. BLOCK DIAGRAM
28
16
9
1
|
13
23 21 22 24
27
AF POWER
AMP
FM IF
AM IF
FM
DISCRIMINATOR
5
17
18
RIPPLE
FILTER
INPUT
CONTROL
ALARM TIME CTR OUTPUT
CONTROL
DISPLAY
CONTROL
LED101
LED DISPLAY
(12H)
DISPLAY
DECODER/
DRIVER
OSC 1/25 or 1/30
Q302
SWITCH
Q301
16
18
19
S108
SLEEP
S105
TIME SET
M
S106
SLEEP INPUT ALARM DISP MIN SET HOUR SET SNOOZE INPUT
TIME SET
H
S111
SNOOZE/SLEEP OFF
S101
(Function Selector)
BUZZER
ALARM
RADIO
RADIO ON
OFF
S104
CLOCK
S103
ALARM
D304
DRY BATTERY
"006P" 9V
(IEC DESIGNATION 6F22)
~ AC IN
1-13
14
15,16
17
L1
CV1-3 CT5
CV1-4 CT6
CV1-1 CT3
CV1-2 CT4
CT5,L1
FM
TRACKING
L2
L4
L3
CT6,L2
FM
FREQUENCY
COVERAGE
CT4,L3
AM
FREQUENCY
COVERAGE
CT3,L4
AM
TRACKING
AM
FERRITE-ROD
ANTENNA
CV1
TUNING
T1
AM IF
FM FRONT-ENDAM FRONT-END
IC1
FM/AM
FRONT-END
IF AMP,DET
FM ANT
FM RF
FM OSC
AM ANT
AM OSC
VREG
13
10 15
8
11
6
MIX OUT CF2
CF1
T1
FM
IF IN AF IN AF OUT
NF
+B
+B
+B
DET OUT
AM
IF IN
DISCRI
VOL
CF3
FM DISCRI
VREG
Q1
RV1
w VOLUME
IC101
ALARM CLOCK
S1
BAND
AM FM
BAND SW
SP1
(SPEAKER)
KEEP THE CORRECT
TIME DURING POWER
STOPPAGE
REG
FM
LEAD WIRE
ANTENNA
SLEEP OUT
VDD
ALARM
OUT
ALARM OFF
S101-1 S101-2
D302
T301
POWER
TRANSFORMER
D301 D111
D112
3
• Signal path
: FM
: AM
4
24 25
17
15
D114
S100
HIGH
LOW
ALARM
VOL
+B
< BACK UP >

ICF-C112
1212
5-2. PRINTED WIRING BOARDS • Refer to page 10 for Common Note on Printed Wiring Boards.
D1 B-8
D2 B-8
D111 I-3
D112 I-3
D114 G-7
D301 H-9
D302 I-8
D304 D-9
IC1 D-5
IC101 H-5
LED101 I-6
Q1 H-2
Q301 D-8
Q302 E-8
•Semiconductor
Location
Ref.No. Location
1
A
B
C
D
E
F
G
H
I
J
234567891011121314
LED101 LED DISPLAY (12H)
MAIN BOARD
JC1
JC103
JC105
C115
R117
C104 C105
R303
C303
D302
D301
R135
R137
R136 R108 R109 R110 R111 R112 R116 R115 R114 R113
JW104
D112
D111
JW2
JW5
C306
Q302
C301
C302
R9
C34
R2
C6
C32
C31
C1 C2
C3
R8
C33
C16
C24
C23
C21
ALARM
C22 C25
JW3
JW101
S101 (Function Selector)
D1
D2
JW4
JW6
C29
R305
D114
S106
S105
S104
S111
JW103
C304
CN1 14
14
JW300
JW301
JW102
S103
S108
S1
R15
T1
CF1
CF2
IC1
C15
BPF1
CF3
C18
R14
JW1
R13
C14
R3
C35
B C E
JW7
D304
C27
C28
C26
C17
C5 C4
L2
FM OSC
L1
FM RF
CV1 TUNING
L3
AM OSC
IC101
C118
C119
C9
R10
R11
R4
R6
C12
R5
Q301
Q1
R133
R101
C116
C109
B C E
SWITCH BOARD
TRANSFORMER BOARD
FM
LEAD WIRE
ANTENNA
BATTERY
SNAP
BLK
GRY
RED
RED
DRY BATTERY
"006P" 9V
(IEC DESIGNATION 6F22)
KEEP THE CORRECT
TIME DURING POWER
STOPPAGE
<BACK UP>
RED
WHT
RED
WHT
SP1
(SPEAKER)
FM
AM
CT3
CT4
CT5
CT6
CV1-1 CV1-2
CV1-3 CV1-4
BUZZER RADIO RADIO ON OFF
LOW HIGH
-1
15 16
130
-2
31
BCE
SNOOZE/
SLEEP OFF
M
15 28
14 1
H
TIME SET CLOCK
SLEEP
ALARM
117
1-686-755- (11)
11
1-686-757- (11)
11
(11)
11
1-686-756-
T301
POWER TRANSFORMER
~ AC IN
RED
RED
RV1
S1
BAND
RV1
VOLUME
L4
AM
FERRITE-ROD
ANTENNA
RED
1
3
ALARM
VOL
S100

ICF-C112
13 13
5-3. SCHEMATIC DIAGRAM • Refer to page 10 for Common Note on Schematic Diagram and page 14 for IC Block Diagrams.
IC B/D
IC B/D
CV1-1
S1
IC101
CV1-2CV1-4CV1-3
SP1
IC1
L4
C1 CT3 L1
CT5
C3
R8
L2
CT6
R2
C4
C5
R3
C14
C33
C15
L3 CT4
C6
JW7
D2D1
JW1
R14 R15
CF2CF1
C18
C21 C22
C23
C24
C35
C25
C26
C27
JW3
R305
C306
C29 C28
C16
JW2
RV1
R5R10
R6
C31
C32
C9
C12
JW5
Q1
R4
C17
R9
C34
JW6
R13
JW4
JW101
C303
C304
R303
D301
C301
D302
C302
CN1
T301
JW301
JW300
R108
R109
R110
R111
R112
R101
R113
R114
R115
R116
R136
R135 R137
C118 C119
S105 S106
S104S103
JW104
S108 S111
C109
JW103
C104
C105
R117
C116
C115
JW102
R11
Q301
C2
BPF1
S100
D304
S101
JC105
D114
JC103
D111 D112
R133
T1
CF3
JC1
LED101
Q302

ICF-C112
1414
12 3 45 6 7 8 9 10 15141312
11
FM
DISCRIMINATOR
AF POWER AMP AM FE FM IF
TUNING
METER
AM IF DET AGC
FM FE
23 22 21 202425 19 18 17 1629 28 27 2630
GND GND AF OUT +B RIPPLE FILTER AF IN DET OUT AFC (J)AGC AFC (W)AGC IF GND LED NC FM IF IN AM IF IN BAND SW
NC
MIX OUT
FE GND
AM ANT
FM RF
REG
FM OSC
FM ANT
AFC
AM OSC
VOL
NF
DISCRI
GND GND
28 27 26 25 24 23 22 21 20 19 18 17 16 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14
AM & 10,S
HR AG & DE
PM & 10,S HR B
10,S HR C & HR B
10,S MIN A & F
10,S MIN B & G
10,S MIN C & D
MIN A & F
COLON OUTPUT
MIN C & D MIN B & G
10,S MIN E
& MIN E
HR B & G HR C & D
HR A & F
12/24 HR SELECT 50/60 Hz SELECT 50/60 Hz INPUT SLEEP INPUT SNOOZE INPUT CR/INPUT HOUR SET MIN SET ALARM DISP ALARM OFF SLEEP OUT ALARM OUT VDD VSS
D
OSC
CTR
GATE
1/2
1Hz
2Hz
50/60Hz
GATE COMPARATOR SLEEP CTR
OUTPUT DECODER/DRIVER
CONTROL
PWR UP
OUTPUT
CONTROL
DISPLAY
CONTROL
RESET
CONTROL
PF.
DET
SEC
CTR ALARM
MIN CTR
TIME
MIN CTR
TIME
HR CTR
ALARM
HR CTR
BLANK &
FLASH
1/25 or 1/30
STAND
BY DET
D DD D D
INPUT
CONTROL
F.SAMPLE
S.SAMPLE
SLEEP SEC,TIME,ALARM
IC1 CXA1019S
5-4. IC BLOCK DIAGRAMS
IC101 LM8560N

15
ICF-C112
SECTION 6
EXPLODED VIEWS
Ref. No. Part No. Description Remark
6-1. CABINET (UPPER) SECTION
Ref. No. Part No. Description Remark
13-369-135-21 LID, BATTERY CASE
2X-3383-416-1 CABINET (UPPER) SINGLE ASSY
(BLACK)...(BLACK)
2X-3383-417-1 CABINET (UPPER) SINGLE ASSY
(WHITE)...(WHITE)
33-246-791-01 KNOB (FUNCTION) (BLACK)...(BLACK)
33-246-791-11 KNOB (FUNCTION) (WHITE)...(WHITE)
43-246-788-01 PANEL (FRONT)
#1 7-685-134-19 SCREW +P 2.6X8 TYPE2 NON-SLIT
#2 7-685-153-19 SCREW +P 3X30 TYPE2 NON-SLIT
NOTE:
•The mechanical parts with no reference
number in the exploded views are not supplied.
•Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
•Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
•Accessories are given in the last of this parts
list.
RR
The components identified by
mark 0or dotted line with mark
0are critical for safety.
Replace only with part number
specified.
3
2
1
4
#1 #2
#2

16
ICF-C112
6-2. MAIN BOARD SECTION
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
The components identified by
mark 0or dotted line with mark
0are critical for safety.
Replace only with part number
specified.
52
51
53
62
54
55
56
57
58
59
59
60
61
#3
#3
#3
#3
#3
L4
not supplied
SP1 LED101
T301
not supplied
(POWER CORD RETAINER board)
not supplied
(SWITCH board
)
51 3-919-268-01 KNOB (VOL) (BLACK)...(BLACK)
51 3-919-268-11 KNOB (VOL) (WHITE)...(WHITE)
52 3-246-784-01 CABINET (LOWER) (BLACK)...(BLACK)
52 3-246-784-11 CABINET (LOWER) (WHITE)...(WHITE)
53 3-246-344-11 FOOT, RUBBER
054 1-769-339-22 CORD, POWER
*55 A-3347-218-A MAIN BOARD, COMPLETE (BLACK)
*55 A-3663-993-A MAIN BOARD, COMPLETE (WHITE)
56 3-226-590-01 HOLDER (ANTENNA)
57 1-535-804-71 SNAP, BATTERY
58 1-754-135-11 ANTENNA (WIRE)
59 3-553-567-00 CUSHION
60 3-246-786-01 KNOB (TUNING) (BLACK)...(BLACK)
60 3-246-786-11 KNOB (TUNING) (WHITE)...(WHITE)
61 3-246-787-01 POINTER
62 A-3347-348-A TRANSFORMER BOARD, COMPLETE
L4 1-419-532-41 COIL, FERRITE-ROD ANTENNA (AM)
LED101 6-500-504-01 LED COG509T0A1
SP1 1-529-456-13 SPEAKER (6.6cm)
0T301 1-433-573-21 TRANSFORMER, POWER
#3 7-685-647-79 SCREW +P 3X10 TYPE2 NON-SLIT

17
ICF-C112
SECTION 7
ELECTRICAL PARTS LIST
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
*A-3347-218-A MAIN BOARD, COMPLETE (BLACK)
*A-3663-993-A MAIN BOARD, COMPLETE (WHITE)
*********************
1-535-804-71 SNAP, BATTERY
1-754-135-11 ANTENNA (WIRE)
3-226-590-01 HOLDER (ANTENNA)
7-685-647-79 SCREW +P 3X10 TYPE2 NON-SLIT
< BPF >
BPF1 1-236-022-11 FILTER, BAND PASS
< CAPACITOR >
C1 1-162-907-11 CERAMIC CHIP 2PF 0.25PF 50V
C2 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C3 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C4 1-162-997-11 CERAMIC CHIP 10PF 0.5PF 50V
C5 1-162-918-11 CERAMIC CHIP 18PF 5% 50V
C6 1-162-934-11 CERAMIC CHIP 3PF 0.25PF 50V
C9 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
C12 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C14 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C15 1-126-947-11 ELECT 47uF 20% 10V
C16 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C17 1-126-960-11 ELECT 1uF 20% 50V
C18 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C21 1-126-963-11 ELECT 4.7uF 20% 50V
C22 1-126-964-11 ELECT 10uF 20% 50V
C23 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V
C24 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C25 1-126-964-11 ELECT 10uF 20% 50V
C26 1-126-935-11 ELECT 470uF 20% 10V
C27 1-115-156-11 CERAMIC CHIP 1uF 10V
C28 1-115-156-11 CERAMIC CHIP 1uF 10V
C29 1-104-665-11 ELECT 100uF 20% 10V
C31 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C32 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
C33 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C34 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
C35 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C104 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C105 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C109 1-165-176-11 CERAMIC CHIP 0.047uF 10% 16V
C115 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C116 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C118 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C119 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C301 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C302 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C303 1-126-935-11 ELECT 470uF 20% 10V
C304 1-126-934-11 ELECT 220uF 20% 16V
C306 1-126-934-11 ELECT 220uF 20% 10V
< FILTER >
CF1 1-781-790-11 FILTER, AM CERAMIC
CF2 1-781-861-71 FILTER, CERAMIC (COMBINATION)
CF3 1-781-861-71 FILTER, CERAMIC (COMBINATION)
< CONNECTOR >
*CN1 1-568-270-11 SOCKET, CONNECTOR 4P
< VARIABLE CAPACITOR >
CT3-6 1-141-620-11 CAP, VAR
CV1 1-141-620-11 CAP, VAR (TUNING)
< DIODE >
D1 8-719-911-19 DIODE 1SS119-25
D2 8-719-911-19 DIODE 1SS119-25
D111 8-719-911-19 DIODE 1SS119-25
D112 8-719-911-19 DIODE 1SS119-25
D114 8-719-911-19 DIODE 1SS119-25
D301 8-719-052-88 DIODE 1N4002
D302 8-719-911-19 DIODE 1SS119-25
D304 8-719-911-19 DIODE 1SS119-25
< IC >
IC1 8-752-037-02 IC CXA1019S
IC101 8-759-821-46 IC LM8560N
< JUMPER RESISTOR >
JC1 1-216-864-11 METAL CHIP 0 5% 1/10W
JC103 1-216-864-11 METAL CHIP 0 5% 1/10W
JC105 1-216-864-11 METAL CHIP 0 5% 1/10W
< COIL >
*L1 1-422-320-11 COIL, AIR-CORE
L2 1-422-131-00 COIL, FM OSCILLATION
L3 1-419-533-21 COIL, OSCILLATION (AM)
L4 1-419-532-41 COIL, FERRITE-ROD ANTENNA (AM)
NOTE:
•Due to standardization, replacements in
the parts list may be different from the
parts specified in the diagrams or the
components used on the set.
•RESISTORS
All resistors are in ohms.
METAL:Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F:nonflammable
•Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
•SEMICONDUCTORS
In each case, u : µ, for example:
uA.. : µA.. uPA.. : µPA..
uPB.. : µPB.. uPC.. : µPC.. uPD.. : µPD..
•CAPACITORS
uF : µF
•COILS
uH : µH
The components identified by
mark 0or dotted line with mark
0are critical for safety.
Replace only with part number
specified.
When indicating parts by reference
number, please include the board.
MAIN

18
ICF-C112
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
< DIODE >
LED101 6-500-504-01 LED COG509T0A1
< TRANSISTOR >
Q1 8-729-026-52 TRANSISTOR 2SA1576A-T106-R
Q301 8-729-026-52 TRANSISTOR 2SA1576A-T106-R
Q302 8-729-011-92 TRANSISTOR 2SC2001TP-K1K2
< RESISTOR >
R2 1-216-829-11 METAL CHIP 4.7K 5% 1/10W
R3 1-216-801-11 METAL CHIP 22 5% 1/10W
R4 1-216-845-11 METAL CHIP 100K 5% 1/10W
R5 1-216-833-11 METAL CHIP 10K 5% 1/10W
R6 1-216-841-11 METAL CHIP 47K 5% 1/10W
R8 1-216-821-11 METAL CHIP 1K 5% 1/10W
R9 1-216-805-11 METAL CHIP 47 5% 1/10W
R10 1-216-837-11 METAL CHIP 22K 5% 1/10W
R11 1-216-829-11 METAL CHIP 4.7K 5% 1/10W
R13 1-216-833-11 METAL CHIP 10K 5% 1/10W
R14 1-216-825-11 METAL CHIP 2.2K 5% 1/10W
R15 1-216-817-11 METAL CHIP 470 5% 1/10W
R101 1-216-805-11 METAL CHIP 47 5% 1/10W
R108 1-216-845-11 METAL CHIP 100K 5% 1/10W
R109 1-216-845-11 METAL CHIP 100K 5% 1/10W
R110 1-216-845-11 METAL CHIP 100K 5% 1/10W
R111 1-216-845-11 METAL CHIP 100K 5% 1/10W
R112 1-216-845-11 METAL CHIP 100K 5% 1/10W
R113 1-216-845-11 METAL CHIP 100K 5% 1/10W
R114 1-216-845-11 METAL CHIP 100K 5% 1/10W
R115 1-216-845-11 METAL CHIP 100K 5% 1/10W
R116 1-216-845-11 METAL CHIP 100K 5% 1/10W
R117 1-216-849-11 METAL CHIP 220K 5% 1/10W
R133 1-216-845-11 METAL CHIP 100K 5% 1/10W
R135 1-249-389-11 CARBON 4.7 5% 1/4W
R136 1-216-801-11 METAL CHIP 22 5% 1/10W
R137 1-249-389-11 CARBON 4.7 5% 1/4W
R303 1-247-807-31 CARBON 100 5% 1/4W
R305 1-216-821-11 METAL CHIP 1K 5% 1/10W
< VARIABLE RESISTOR >
RV1 1-228-790-00 RES, VAR, CARBON 50K (VOLUME)
< SWITCH >
S1 1-692-181-21 SWITCH, SLIDE (BAND) (BLACK)
S1 1-692-181-51 SWITCH, SLIDE (BAND) (WHITE)
S101 1-771-904-11 SWITCH, SLIDE (Function Selector)
S103 1-771-550-11 SWITCH, TACTILE (ALARM)
S104 1-771-550-11 SWITCH, TACTILE (CLOCK)
S105 1-771-550-11 SWITCH, TACTILE (TIME SET M)
S106 1-771-550-11 SWITCH, TACTILE (TIME SET H)
S108 1-771-550-11 SWITCH, TACTILE (SLEEP)
S111 1-554-937-11 SWITCH, TACTILE (SNOOZE/SLEEP OFF)
< TRANSFORMER >
T1 1-435-399-21 TRANSFORMER, IF
*************************************************************
SWITCH BOARD
*************
< SWITCH >
S100 1-692-181-21 SWITCH, SLIDE (ALARM VOL) (BLACK)
S100 1-692-181-51 SWITCH, SLIDE (ALARM VOL) (WHITE)
*************************************************************
A-3347-348-A TRANSFORMER BOARD, COMPLETE
******************************
01-769-339-22 CORD, POWER
< TRANSFORMER >
0T301 1-433-573-21 TRANSFORMER, POWER
*************************************************************
MISCELLANEOUS
***************
SP1 1-529-456-13 SPEAKER (6.6cm)
*************************************************************
ACCESSORIES
************
3-247-335-11 MANUAL, INSTRUCTION (ENGLISH,FRENCH,
SPANISH)
The components identified by
mark 0or dotted line with mark
0are critical for safety.
Replace only with part number
specified.
MAIN TRANSFORMERSWITCH

19
ICF-C112
MEMO

20
ICF-C112
REVISION HISTORY
Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.
Ver. Date Description of Revision
1.0 2003. 03 New