Sony ICF-C470 / ICF-C470L Service Manual ▷ View online
ICF-C470/C470L
– 17 –
– 18 –
6-5.
SCHEMATIC DIAGRAM (ICF-C470L)
•
See page 19 for IC Block Diagrams.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
C
: panel designation
•
U
: B+ Line.
•
H
: adjustment for repair.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
(
no mark : FM
(
) : MW/LW
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: FM
f
: MW/LW
Note:
The components identi-
fied by mark
The components identi-
fied by mark
!
or dotted
line with mark
!
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
!
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
ICF-C470/C470L
– 19 –
– 20 –
SECTION 7
EXPLODED VIEWS
Les composants identifiés par une
marque
marque
! sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
Ne les remplacer que par une pièce
portant le numéro spécifié.
The components identified by
mark
mark
! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
specified.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Hardware (# mark) list and accessories and
packing materials 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.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
(1)
CABINET SECTION
• IC Block Diagrams
– MAIN BOARD –
– MAIN BOARD –
IC1
CXA1019S
1
3-369-135-21 LID, BATTERY CASE
2
3-368-852-01 FOOT
3
3-030-215-01 BUTTON (MAIN)
(C470: US, CND, E13, E92, SP, AUS)
3
3-030-215-11 BUTTON (MAIN) (C470:AEP, IT/C470L)
4
3-032-104-01 SCALE, DIAL (C470: US, CND, E92)
4
3-032-104-11 SCALE, DIAL (C470: AEP, SP)
4
3-032-104-21 SCALE, DIAL (C470: E13, AUS)
4
3-032-104-31 SCALE, DIAL (C470: IT)
4
3-032-104-41 SCALE, DIAL (C470L: AEP)
4
3-032-104-51 SCALE, DIAL (C470L: UK)
5
3-030-213-01 CABINET (UPPER)
(C470: US, CND, E13, E92, SP, AUS)
5
3-030-213-11 CABINET (UPPER) (C470L)
5
3-030-213-31 CABINET (UPPER) (C470: AEP, IT)
6
3-030-216-01 BUTTON (ALARM)
(C470: US, CND, E13, E92, SP, AUS)
6
3-030-216-11 BUTTON (ALARM) (C470: AEP, IT/C470L)
SP1
1-504-748-21 SPEAKER (6.6cm)
! 7
1-555-795-00 CORD, POWER
(C470: AEP, IT, E13, SP/C470L: AEP)
! 7
1-696-572-21 CORD, POWER (C470L: UK)
! 7
1-769-339-22 CORD, POWER (C470: E92)
! 7
1-783-817-11 CORD, POWER (C470: US, CND)
! 7
1-790-431-11 CORD, POWER (C470: AUS)
8
7-685-649-79 SCREW +P 3X14 TYPE2 NON-SLIT
E92 : 120 V AC area in E model
IT
IT
: Italian model
SP
: Singapore model
• Abbreviation
AUS : Australian model
CND : Canadian model
E13 : 220 - 230 V AC 50/60 Hz area in E model
CND : Canadian model
E13 : 220 - 230 V AC 50/60 Hz area in E model
1
2
3
4
5
6
7
8
9
10
15
14
13
12
11
FM
DISCRIMINATOR
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
FIL
TER
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
IF OUT
FE GND
N.C
AM RF IN
FM RF
REG OUT
FM OSC
FM RF IN
AFC
AM OSC
VOL
NF
FM DISCRI
GND
GND
1 DAY
1Hz
TIME SET
ALM-A STOP
ALM-B STOP
ALM TONE
ALM TONE
(1200Hz)
(1200Hz)
ALM TONE
(2400Hz)
(2400Hz)
SNOOZE
COUNTER
SLEEP
COUNTER
ALM-A
COUNTER
ALM-B
COUNTER
CALENDER
COUNTER
TIME
COUNTER
SEC.
COUNTER
PRE
COUNTER
DISPLAY
CONTROL
INPUT
CONTROL
GATE
POWER UP
T
T
T
T
RESET CONTROL
CONTROL
CONTROL
COMPARATOR
OUTPUT CONTROL
OUTPUT DECODER/DRIVER
AM/PM
VDD
TIME SET/
DIMMER
MODE
SELECT
50/60Hz
INPUT
MANUAL &
SLEEP
ALM-A/B
SELECT
ALM-B OUT
ALM-A OUT
RADIO OUT
DA
TE &
SNOOZE
TIME SET
CR OSC
U/D
RESET
SET CX
U/D
RESET
RESET
RESET
SET CX
U/D
RESET
SET CX
U/D
RESET
SET CX
U/D
RESET
SET CX
SET
TIME
ALM-A
ALM-B
SLEEP
CALENDER
ALARM INDICATOR
CAL. DISP
SLP
. DISP
AL2. DISP
AL1. DISP
TIME. DISP
SEC. DISP
1
10´SHR AG & D
2
10´SHR B & E
3
10´SHR C & HRE
4
HR B & G
5
HR C & D
6
HR A & F
7
10´SMIN A & F
8
10´SMIN B & G
9
10´SMIN C & D
10
10´SMINE MINE
11
MIN B & G
12
MIN C & D
13
MIN A & F
14
COLON
15
20
19
TEST
18
VSS
17
ALM IND
16
T
25
T
21
26
27
28
29
30
23 22
24
1
2
8
8
7
3
4
5
6
SP1
AEP
US, CND
UK
AUS
E
IC2
LC85632
– 21 –
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
(2)
CHASSIS SECTION
* 61
3-034-959-01 PLATE (LED), SHIELD
62
3-846-067-01 SPACER
63
3-030-219-01 KNOB (TUNING)
64
3-030-221-01 POINTER
65
3-919-268-01 KNOB (VOL)
66
1-535-771-11 TERMINAL
(C470: AEP, IT, E13, SP, AUS/C470L)
67
3-034-961-01 SHEET, BLIND
! T2
1-433-573-11 TRANSFORMER, POWER
(C470: US, CND, E92)
! T2
1-433-574-11 TRANSFORMER, POWER
(C470: AEP, IT, E13, SP, AUS/C470L)
W8
1-535-804-11 SNAP, BATTERY
ANT1
1-501-907-21 ANTENNA, FM WIRE
L1
1-501-976-11 ANTENNA, FERRITE-ROD (MW/LW) (C470L)
L1
1-402-413-21 ANTENNA, FERRITE-ROD (AM)
(C470: US, CND, E92)
L1
1-402-472-31 ANTENNA, FERRITE-ROD (AM)
(C470: AEP, IT, E13, SP, AUS)
LED1
8-749-015-49 LED SL-1906-54T (DATE DISPLAY)
(C470: US, CND, E92)
LED1
8-749-015-50 LED SL-3906-54T (DATE DISPLAY)
(C470: E13)
LED1
8-749-015-51 LED SL-3906-55T (DATE DISPLAY)
(C470: AEP, IT, SP, AUS/C470L)
51
3-030-214-01 CABINET (LOWER) (C470: US, CND, E92)
51
3-030-214-11 CABINET (LOWER) (C470: AEP, IT, SP, AUS)
51
3-030-214-21 CABINET (LOWER) (C470: E13)
51
3-030-214-31 CABINET (LOWER) (C470L)
52
3-030-220-01 KNOB (BAND)
* 53
1-671-686-11 BUZZER BOARD (C470L)
* 53
1-671-686-21 BUZZER BOARD (C470)
54
3-030-218-01 CHASSIS
55
3-032-106-01 SPRING (ALARM)
56
3-030-217-01 KNOB (ALARM)
(C470: US, CND, E13, E92, SP, AUS)
56
3-030-217-11 KNOB (ALARM) (C470: AEP, IT/C470L)
* 57
1-671-684-11 KEY (B) BOARD (C470L)
* 57
1-671-684-21 KEY (B) BOARD (C470)
* 58
1-671-683-11 KEY (A) BOARD (C470L)
* 58
1-671-683-21 KEY (A) BOARD (C470)
* 59
1-671-685-11 TRANSFORMER BOARD (C470L)
* 59
1-671-685-21 TRANSFORMER BOARD (C470)
* 60
A-3683-025-A MAIN BOARD, COMPLETE
(C470: US, CND, E92)
* 60
A-3683-057-A MAIN BOARD, COMPLETE (C470: AEP, SP)
* 60
A-3683-059-A MAIN BOARD, COMPLETE (C470: IT)
* 60
A-3683-060-A MAIN BOARD, COMPLETE (C470: E13)
* 60
A-3683-061-A MAIN BOARD, COMPLETE (C470: AUS)
* 60
A-3683-063-A MAIN BOARD, COMPLETE (C470L: AEP)
* 60
A-3683-065-A MAIN BOARD, COMPLETE (C470L: UK)
57
58
56
55
54
52
53
A
59
60
63
64
65
52
62
51
T2
LED1
ANT1
W8
L1
A
61
66
C470: AEP, IT, E13, SP/
C470L
C470L
67
Les composants identifiés par une
marque
marque
! sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
Ne les remplacer que par une pièce
portant le numéro spécifié.
The components identified by mark
! or dotted line with mark ! are
! or dotted line with mark ! are
critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
– 22 –
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
SECTION 8
ELECTRICAL PARTS LIST
BUZZER KEY (A)
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used
on the set.
fied 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
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
Some delay should be anticipated when order-
ing these items.
• SEMICONDUCTORS
In each case, u: µ, for example:
uA. .
uA. .
: µA. .
uPA. . : µPA. .
uPB. . : µPB. .
uPC. . : µPC. .
uPD. . : µPD. .
• CAPACITORS
uF: µF
• COILS
uH: µH
Les composants identifiés par une
marque
marque
! sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
Ne les remplacer que par une pièce
portant le numéro spécifié.
The components identified by mark
! or dotted line with mark ! are
! or dotted line with mark ! are
critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
E92 : 120 V AC area in E model
IT
IT
: Italian model
SP
: Singapore model
• Abbreviation
AUS : Australian model
CND : Canadian model
E13 : 220 - 230 V AC 50/60 Hz area in E model
CND : Canadian model
E13 : 220 - 230 V AC 50/60 Hz area in E model
When indicating parts by reference
number, please include the board.
number, please include the board.
*
1-671-686-11 BUZZER BOARD (C470L)
*
1-671-686-21 BUZZER BOARD (C470)
*************
< CAPACITOR>
C18
1-163-038-00 CERAMIC CHIP
0.1uF
25V
(C470)
< RESISTOR >
JC18
1-216-295-00 SHORT 0
R17
1-216-061-00 METAL CHIP
3.3K
5%
1/10W
R29
1-216-085-00 METAL CHIP
33K
5%
1/10W
< SWITCH >
S2
1-762-231-11 SWITCH, SLIDE (BRIGHTNESS)
S3
1-572-949-11 SWITCH, SLIDE (BUZZER VOLUME)
************************************************************
*
1-671-683-11 KEY (A) BOARD (C470L)
*
1-671-683-21 KEY (A) BOARD (C470)
*************
< RESISTOR >
JC7
1-216-296-00 SHORT 0 (C470: US, CND, E13, E92)
JC8
1-216-295-00 SHORT 0
(C470: AEP, IT, SP, AUS/C470L)
R15
1-216-073-00 METAL CHIP
10K
5%
1/10W
< SWITCH >
S4
1-762-233-11 SWITCH, KEYBOARD (–, TIME SET)
S5
1-762-233-11 SWITCH, KEYBOARD (+, TIME SET)
S6
1-762-233-11 SWITCH, KEYBOARD
(SNOOZE/DATE/SLEEP OFF)
S7
1-762-233-11 SWITCH, KEYBOARD (A RADIO, ALARM)
S10
1-762-233-11 SWITCH, KEYBOARD (B BUZZER, ALARM)
S11
1-762-233-11 SWITCH, KEYBOARD (CLOCK)
************************************************************
*
1-671-684-11 KEY (B) BOARD (C470L)
*
1-671-684-21 KEY (B) BOARD (C470)
*************
< SWITCH >
S8
1-762-233-11 SWITCH, KEYBOARD
(ALARM RESET/OFF, RADIO OFF)
S9
1-762-233-11 SWITCH, KEYBOARD (SLEEP, RADIO ON)
************************************************************
*
A-3683-025-A MAIN BOARD, COMPLETE
(C470: US, CND, E92)
*
A-3683-057-A MAIN BOARD, COMPLETE (C470: AEP, SP)
*
A-3683-059-A MAIN BOARD, COMPLETE (C470: IT)
*
A-3683-060-A MAIN BOARD, COMPLETE (C470: E13)
*
A-3683-061-A MAIN BOARD, COMPLETE (C470: AUS)
*
A-3683-063-A MAIN BOARD, COMPLETE (C470L: AEP)
*
A-3683-065-A MAIN BOARD, COMPLETE (C470L: UK)
*********************
*
3-034-959-01 PLATE (LED), SHIELD
< ANTENNA >
ANT1
1-501-907-21 ANTENNA, FM WIRE
< CAPACITOR >
C1
1-163-235-11 CERAMIC CHIP
22PF
5%
50V
C2
1-163-243-11 CERAMIC CHIP
47PF
5%
50V
C3
1-163-101-00 CERAMIC CHIP
22PF
5%
50V
(C470: IT/C470L)
C3
1-163-103-00 CERAMIC CHIP
27PF
5%
50V
(C470: US, CND, AEP, E13, E92, SP, AUS)
C4
1-163-086-00 CERAMIC CHIP
3PF
50V
(C470L)
C4
1-163-088-00 CERAMIC CHIP
5PF
50V
(C470: US, CND, E92)
C4
1-163-091-00 CERAMIC CHIP
8PF
50V
(C470: AEP, IT, E13, SP, AUS)
C5
1-163-233-11 CERAMIC CHIP
18PF
5%
50V
C6
1-163-009-11 CERAMIC CHIP
0.001uF
10%
50V
C7
1-163-021-11 CERAMIC CHIP
0.01uF
10%
50V
C8
1-163-089-00 CERAMIC CHIP
6PF
50V
(C470L)
C8
1-163-095-00 CERAMIC CHIP
12PF
5%
50V
(C470: IT)
C10
1-128-551-11 ELECT
22uF
20%
25V
C11
1-163-021-11 CERAMIC CHIP
0.01uF
10%
50V
C12
1-126-960-11 ELECT
1uF
20%
50V
C13
1-163-021-11 CERAMIC CHIP
0.01uF
10%
50V
C14
1-126-963-11 ELECT
4.7uF
20%
50V
C15
1-126-964-11 ELECT
10uF
20%
50V
C16
1-163-989-11 CERAMIC CHIP
0.033uF
10%
25V
C17
1-164-004-11 CERAMIC CHIP
0.1uF
10%
25V
KEY (B) MAIN
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