Sony ICF-C492 Service Manual ▷ View online
13
ICF-C492
•
IC Bloc
k Dia
grams
– MAIN Boar
d –
IC1
CXA1019S
IC101
LM8562
1
2
3
4
5
6
7
8
9
10
15
14
13
12
11
FM
DISCRIMINA
TOR
AF POWER AMP
AM FE
FM IF
TUNING
METER
AM IF DET AGC
FM FE
23
22
21
20
24
25
19
18
17
16
29
28
27
26
30
GND
GND
AF OUT
VCC
RIPPLE
FILTER
AF IN
RIPPLE
FILTER
AF IN
DET OUT
AFC AGC
AFC AGC
IF GND
METER
N.C
FM IF IN
AM IF IN
FM/AM BAND
SELECT
FM/AM BAND
SELECT
FM/AM
IF OUT
N.C
FE GND
AM RF IN
FM RF
REG OUT
FM OSC
FM RF IN
AFC
AM OSC
VOL
NF
FM DISCRI
GND
GND
28
27
26
25
20
19
18
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 E
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
TIME SET INPUT
VDD
VSS
SLEEP/SNOOZE
RT-TIME
SET/DIMMER
SET/DIMMER
MODE
SELECT
50/60Hz
INPUT
SELECT
50/60Hz
INPUT
ON/OFF INPUT
ALM DISP SELECT
ALM-2 OUTPUT
ALM-1 OUTPUT
RADIO OUTPUT
RADIO OUTPUT
SPEED/
POWER DOWN
POWER DOWN
CR OSC
DISPLAY DECODER/DRIVER
T
T
T
T
OUTPUT
CONTROL
DISPLAY
CONTROL
PWR UP
INPUT
CONTROL
ALARM 1 CTR
ALARM 2 CTR
TIME CTR
TIME
SET
BLANK
FLASH
SLEEP
CTR
SNOOZE
CTR
STAND
BY DET
OSC
CTR
GATE
1/2
GATE
PF.
DET
SEC
CTR
1/25 or 1/30
INNER
OSC
CONTROL
GATE
COMP.
CONTROL
RESET
CONTROL
T
T
T
T
24
23
22
21
ON
OFF
50/60 SEL
12/24 SEL
12/24 SEL
SEC,TIME,ALARM 1/2,SLEEP
RESET
U/D
SET CK
DIMMER
RT-SET
2Hz
1Hz
RESET
THREE
INPUT
CIRCUIT
14
ICF-C492
SECTION 6
EXPLODED VIEWS
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
2
X-2055-612-1 CABINET (FRONT) SUB ASSY (SP)
2
X-2055-613-1 CABINET (FRONT) SUB ASSY (KR, AUS)
3
2-560-529-01 BUTTON (ON/OFF)
4
3-254-070-01 SCREW
5
2-560-530-01 KNOB (ALARM)
6
2-582-593-01 CAP (A)
7
3-254-151-01 SCREW (B2.6), (+) P TAPPING
8
3-246-344-11 FOOT, RUBBER
* 9
1-865-188-11 POWER BOARD
10
2-560-534-01 BRACKET, TRANSFORMER RETAINER
11
2-560-528-01 KNOB (TIMER SET)
12
3-254-140-01 SCREW (B2.6), (+) BV TAPPING
14
X-2050-594-2 CABINET (REAR) SUB ASSY
* 15
1-865-189-11 BUZZER BOARD
16
3-252-828-01 SCREW (B2.6), (+) PWH TAPPING
17
3-559-407-21 CUSHION, STOPPER
18
2-595-214-01 SHEET, INSULATING
19
3-831-441-11 CUSHION (B)
20
3-252-827-01 SCREW (B2.6), (+) BV TAPPING
0 P301
1-769-079-51 POWER SUPPLY CORD (KR)
0 P301
1-777-921-13 POWER SUPPLY CORD (SP)
0 P301
1-831-261-11 POWER SUPPLY CORD (AUS)
SP1
1-529-456-13 SPEAKER (6.6cm)
0 T301
1-435-961-21 TRANSFORMER, POWER
W301
1-535-804-71 SNAP, BATTERY
6-1.
OVERALL SECTION
•
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
•
The mechanical parts with no reference
number in the exploded views are not supplied.
number in the exploded views are not supplied.
•
Accessories are given in the last of the
electrical parts list.
electrical parts list.
NOTE:
•
-XX and -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color
Cabinet's Color
The components identified by mark
0 or dotted line with mark 0 are
critical for safety.
Replace only with part number
specified.
0 or dotted line with mark 0 are
critical for safety.
Replace only with part number
specified.
•
Abbreviation
AUS: Australian model
KR : Korean model
SP : Singapore model
AUS: Australian model
KR : Korean model
SP : Singapore model
12
6
12
11
17
17
17
10
9
7
10
18
8
2
7
4
3
5
16
20
15
7
14
SP1
T301
P301
W301
not supplied
not supplied
not supplied
chassis assy section
6
12
19
Ver. 1.2
15
ICF-C492
6-2.
CHASSIS ASSY SECTION
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
3-254-070-01 SCREW
52
A-1099-785-A KEY BOARD, COMPLETE
53
2-560-533-01 PLATE (LED), SHIELD
54
2-560-531-01 POINTER
55
3-254-149-01 SCREW (M1.7)
56
2-560-523-02 CHASSIS
57
3-254-151-01 SCREW (B2.6), (+) P TAPPING
58
3-382-175-61 KNOB (V)
59
A-1103-450-A MAIN BOARD, COMPLETE (AUS)
59
A-1103-739-A MAIN BOARD, COMPLETE (SP)
59
A-1239-765-A MAIN BOARD, COMPLETE (KR)
60
2-560-532-01 HOLDER (ANTENNA)
61
2-560-526-01 KNOB (TUNING)
63
3-559-407-21 CUSHION, STOPPER
CN107
1-770-647-11 CONNECTOR, FFC/FPC 18P
D100
1-805-814-11 ELEMENT, LED INDICATOR (SP)
D100
1-805-815-11 ELEMENT, LED INDICATOR (KR, AUS)
L1
1-419-532-11 COIL, FERRITE-ROD ANTENNA (MW)
W1
1-754-330-11 ANTENNA (WIRE) (FM)
W102
1-830-323-11 CABLE, FLEXIBLE FLAT (9 CORE)
W107
1-830-324-11 CABLE, FLEXIBLE FLAT (18 CORE)
51
59
60
58
63
63
63
55
52
51
54
53
56
61
57
58
L1
W1
MAIN board
W107
CN107
D100
W102
Ver. 1.2
16
ICF-C492
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
*
1-865-189-11 BUZZER BOARD
*************
< SWITCH >
S111
1-771-905-21 SWITCH, SLIDE (ALARM VOL)
************************************************************
A-1099-785-A KEY BOARD, COMPLETE
********************
< CAPACITOR >
C124
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
< DIODE >
D102
8-719-991-33 DIODE 1SS133T-77
D103
8-719-991-33 DIODE 1SS133T-77
D104
8-719-991-33 DIODE 1SS133T-77
D108
8-719-991-33 DIODE 1SS133T-77
< RESISTOR >
R108
1-216-817-11 METAL CHIP
470
5%
1/10W
R122
1-216-841-11 METAL CHIP
47K
5%
1/10W
R124
1-216-833-11 METAL CHIP
10K
5%
1/10W
R125
1-216-833-11 METAL CHIP
10K
5%
1/10W
R131
1-216-809-11 METAL CHIP
100
5%
1/10W
R132
1-216-809-11 METAL CHIP
100
5%
1/10W
R139
1-216-809-11 METAL CHIP
100
5%
1/10W
R143
1-216-817-11 METAL CHIP
470
5%
1/10W
R150
1-216-833-11 METAL CHIP
10K
5%
1/10W
< SWITCH >
S101
1-771-904-21 SWITCH, SLIDE (ALARM MODE)
S106
1-771-550-11 SWITCH, TACTILE (RADIO OFF, ALARM RESET)
S107
1-771-550-11 SWITCH, TACTILE (RADIO ON)
S108
1-771-550-11 SWITCH, TACTILE (SLEEP)
************************************************************
A-1103-450-A MAIN BOARD, COMPLETE (AUS)
A-1103-739-A MAIN BOARD, COMPLETE (SP)
A-1239-765-A MAIN BOARD, COMPLETE (KR)
A-1103-739-A MAIN BOARD, COMPLETE (SP)
A-1239-765-A MAIN BOARD, COMPLETE (KR)
*********************
2-560-532-01 HOLDER (ANTENNA)
3-254-151-01 SCREW (B2.6), (+) P TAPPING
3-254-151-01 SCREW (B2.6), (+) P TAPPING
< CAPACITOR/RESISTOR >
C1
1-162-927-11 CERAMIC CHIP
100PF
5%
50V
C3
1-162-907-11 CERAMIC CHIP
2PF
0.25PF 50V
C4
1-162-919-11 CERAMIC CHIP
22PF
5%
50V
C6
1-164-115-91 CERAMIC CHIP
5PF
0.25PF 50V
C7
1-162-919-11 CERAMIC CHIP
22PF
5%
50V
C8
1-162-935-11 CERAMIC CHIP
4PF
0.25PF 50V
C11
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C12
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C13
1-126-964-11 ELECT
10uF
20%
50V
C14
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C15
1-126-960-11 ELECT
1uF
20%
50V
C16
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C17
1-126-963-11 ELECT
4.7uF
20%
50V
C18
1-126-964-11 ELECT
10uF
20%
50V
C19
1-164-227-11 CERAMIC CHIP
0.022uF
10%
25V
C20
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C21
1-128-551-11 ELECT
22uF
20%
63V
C22
1-126-935-11 ELECT
470uF
20%
16V
C24
1-115-156-11 CERAMIC CHIP
1uF
10V
C25
1-115-156-11 CERAMIC CHIP
1uF
10V
C26
1-104-665-11 ELECT
100uF
20%
25V
C27
1-126-934-11 ELECT
220uF
20%
16V
C29
1-162-927-11 CERAMIC CHIP
100PF
5%
50V
C31
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C32
1-115-156-11 CERAMIC CHIP
1uF
10V
C103
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C104
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C105
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C106
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C107
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C108
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C110
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C111
1-126-933-11 ELECT
100uF
20%
16V
C112
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C113
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C114
1-115-156-11 CERAMIC CHIP
1uF
10V
C115
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C116
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C117
1-162-927-11 CERAMIC CHIP
100PF
5%
50V
C118
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C119
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C123
1-162-966-11 CERAMIC CHIP
0.0022uF
10%
50V
SECTION 7
ELECTRICAL PARTS LIST
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.
specified in the diagrams or the components
used on the set.
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• Abbreviation
AUS : Australian model
KR
KR
: Korean model
SP
: Singapore model
The components identified by mark
0 or dotted line with mark 0 are
critical for safety.
Replace only with part number
specified.
0 or dotted line with mark 0 are
critical for safety.
Replace only with part number
specified.
When indicating parts by reference
number, please include the board.
number, please include the board.
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
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
MAIN
KEY
BUZZER
Ver. 1.2
Click on the first or last page to see other ICF-C492 service manuals if exist.