Sony ICF-C240 User manual

SECTION 1
ELECTRICAL ADJUSTMENTS
FM Section AM Section oii
SERVICE
MANUAL
AEP
Model
isi
=
[-~}H
Pz)
antenna close to
ww the set,
3
ICF-C240
TIME SET-M button. ALARM button speaker terminal
[1 semen
TIME
SET-H
button-
SLEEP
button
‘00H,
80%
@
Repeat
the
procedures
in
each
adjustment
CLOCK
button.
REPEAT
ALARM/
AM
modulation
several
times,
and
the
frequency
coverage
and
SPEER
OFF
button
s2askiis
frequency
Output
level
as
tow
as
possbte
tracking
adjustments
should
be
finally
done
by
output level :as low as possible the trimmer capacitors,
ALARM
(RADIO/BUZZER)
Ne
Band
(FM/AM)
selector
FM
FREQUENCY
AM_IF
ALIGNMENT
VOL
(volume)
control
COVERAGE
ADJUSTMENT
Adjust
for
a
maximum
reading
TUNING
control
|
‘Adjust
for
a
maximum
reading
on
VTVM.
|
on
VTVM,
12
i
L4
87.35(87.3)MHz
455kHz
{ cT2
108.05(108.3)
MHz
\
AM
FREQUENCY
SPECIFICATIONS
FM
TRACKING
ADJUSTMENT
COVERAGE
ADJUSTMENT
Frequency
range
FM
AM
MAIN
BOARD
REMOVAL
Adjust
for
a
maximum
reading
Adjust
for
a
maximum
reading
AEP
model
|
87.6—107.5MHz
|
531—1,602kHz
o
Turn
TUNING
knob
fully
clockwise.
coy)
on
VTVM
IT
model |
87.5—108MHz
526.5—1,606.5kHz
e
R
4B
2.6X5
s
LS,
L6
87.35(87.3)MHz
13
520(516.5)kHz
einoveiscrew
(48.26%)
Ct
108.05
(108.3)
MHz
crt
1,650(1,631.5)kHz
Antenna
FM:
AC
power
cord
antenna
©
Release
fook,
(_):IT
model
Seu
ye
Lae
ere
esl
de
©
Remove
main
board
pressing
down
TUNING
knob.
speaker
pprox.
6.6
cm
(27,
inches)
dia.
¢ "
a i
[AM
TRACKING
ADJUSTMENT]
Power
output
100mW
(at
10%
harmonic
distortion)
Note:
When
installing
main
board,
align
shaft
of
VOL
knob
AM
TRACKING
ADJUSTMENT.
Power
requirement
220V
AC,
50H2
with
a
hole
of
adjustable
resistor.
‘Adjust
for
a
maximum
reading
For
the
power
backup
function:
on
VTVM,
9V DC,
one
6F
22
battery
Battery
life
Approx.
80
hours,
using
Sony
battery
S-O06P
(U)
°
EL
S20kHz
Dimensions
Approx.
181.5x59x144mm (w/h/d)
CT3
1,400kHz
(7.x
2%
x54, inches)
ae
incl.
projecting
ports
and
controls.
Weight
Approx.
520g
(1
Ib
302)
it
incl.
batt
te
.
not
inch
battery
alle
BOAR
[MAIN
BOARD]
-
component
side
-
Design
and
specifications
subject
to
change
without
notice
|
adjustable
i
resistor
FEATURES
* Electronic digital alarm clock and sleep timer are combined.
+ Two wake-up modes available: radio or buzzer alarm.
* REPEAT ALARM bar, operable with a feather-light touch, offers
two functions: snooze alarm and sleep timer turn off.
* Power back-up function to keep the clock operating during a
power interruption, using an optional 6F22 battery.
VOL knob |
@ TuNING KNos |
SAFETY-RELATED COMPONENT WARNING!!
|
|
&
COMPONENTS IDENTIFIED BY MARK /\ OR DOTTED @ screw
LINE WITH MARK \ ON THE SCHEMATIC DIAGRAMS +8 265
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
tas oaeenmemmseen FM/AM DIGITAL CLOCK RADIO

SECTION 2
2-1.
PRINTED
WIRING
BOARDS
DIAGRAMS
Dé
e
iC
Biock
Diagram
Note:
LED
DISPLAY
IC2
CXA1019S
©
©—
:
parts
extracted
from
the
component
side.
© [indicates side identified with part number.
‘© 888 : Pattern on the side which is seen.
@ Semiconductor Location
Ref. No. | Location] Ref.No. | Location
ol C-2 08 C-4
02 C-2
03 E-4 C1 B-3
04 D-4 1C2 0-6
05 0-4
06 A-3. ai C-6
o7 C-3 Q2 E-5
u7
\
\
\
|
i cyl
— }
/
/
AM} 4
|__| i BAND
DRY BATTERY S-O06P
IEC DESIGNATION
6F22
IPC 9V
F (POWER BACK-UP FOR CLOCK)
(KEEP THE CORRECT TIME DURING POWER STOPAGE)

1 | 2 | 3 | 4 | 5 | 6 | 7 | 9 10 | 11 | 12 | 13 | 14 | 15
2-2.
SCHEMATIC
DIAGRAM
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cxarois
© See page 4 for IC2 block diagram. ot fb ef a2 foe < tof 2_/os te fx fou 2SA733TP-P FRAN FRONTEND!
ON:
ALARM
LEVEL
SWITCHING
IF
AMP,
DET,
AF
AMP.
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DRY BATTERY S-OO6P SLEEP] [ELock H iM ALARM
WEG DESIGNATION 6F22) bit ain
(POWER BACK-UP FOR CLOCK)
@ SEMICONDUCTOR LEAD LAYOUTS
188119 10E2 2SA1175-HFE 28C2001-K2
extede sia se
il
il
os: node eey
TIME SET.
line with mark A\ are critical for safety.
Note: The santa fhe by mark A\ or dotted
Replace only with part number specified.
st
[— Eanction] ——
ALARM ]__[ALARM] [RADIO] __[orF
BUZZER | *— [RADIO ON.
IT model: Italian model.
* XX: Printed pattern functions as a kind of coil.
@ All capacitors are in uF unless otherwise noted. pF: u uF
5OWV or less are not indicated except for electrolytics
and tantaluns.
@ All resistors are in Q and % Wor less unless otherwise
specified.
e. Aa : internal component.
. B+ lines.
© Voltage and waveforms are dc with respect to ground
SP1
under detuned condit ions.
no mark : FM
(): AW
© Voltages are taken with a VOM. (input impedance 10 MQ)
Voltage variations may be noted due to normal. produc~
tion tolerances.
@ Signal path.
>: FM

NOTE:
@ The mechanical parts with no reference
number in the exploded views are not
supplied.
© The construction parts of an assembled
part are indicated with a collation num-
ber in the remark column.
© Items marked ‘*” are not stocked since
they are seldom required for routine
service. Some delay should be antici-
pated when ordering these items.
No. Part No. Descr ipt ion
1 3-902-093-51
3-902-093-61
3-902-093-71
2 3-902-092-01
3-902-092-21
3-902-092-32
(WHITE)
(WHITE)
(GRAY).
(BLACK)
3 3-902-090-11
3-902-090-31 (IT).
4 3-902-097-01 (WHITE)
3-902-097-21
3-902-097-31 -CABINET (UPPER)
5 — 3-903-139-31
3-903-139-41
3-903-139-51
6 — 3-902-091-01
3-902-091-11
(GRAY ,BLACK
(WHITE). «KI
PLATE , “ORNAMENTAL
LATE, ORNAMENTAL
«PLATE, ORNAMENTAL,
KNOB (FUNCTION)
CABINET (UPPER)
‘ABINET (UPPER)
"ABINET (LOWER)
sKNOB (VOL) (GRAY)
(VOL) (LIGHT GRAY)
SECTION 3
EXPLODED VIEW
Due to standardization, parts with part
number suffix -XX and -X may be dif-
ferent from the parts specified in the
components used on the set.
Color Indication of Appearance Parts
Example:
(RED) ... KNOB, BALANCE (WHITE)
t t
Parts Color Cabinet's Color
Remarks No. Part No.
The components identified by
rk /\ or dotted line with mark
A are critical for safety.
eplace only with part number
specified.
© iT model: italian model
Description Remarks
7 3-902-474-01
3-902-474-11
8 — *3-902-463-01
9 7-621-775-20
0 7-685-648-79
1 3-902-094-02
901 *A-3615-360-A
*A-3615-361-A
902. 1-535-804-21
903 A. 1-555-795-00
904 “1-535-476-11
06 = -1-808-344-11
SP] 1-503-082-00
TI f.1-449-940-11
=
(GRAY BLACK)... .KNOB (TUNING) (GRAY)
(WHITE)...KNOB (TUNING) (LIGHT GRAY)
CAP (POINTER)
SCREW +B 2.6X5
SCREW +BTP 3X12 TYPEZ N-S
STOPPER (REPEAT ALARM BAR)
(it).
(AEP)
MOUNTED PCB, MAIN
MOUNTED PCB, MAIN
SNAP, BATTERY
CORD, POWER
TERMINAL
DIODE SL-1042-79T
SPEAKER
TRANSFORMER, POWER
ICF-C240
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.
SECTION 4
ELECTRICAL PARTS LIST
Items marked “&" are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
If there are two or more same circuits in a set
such as a stereophonic machine, only typical
circuit parts may be indicated and capacitors and
resistors in other same circuits may be omitted.
Ref.No. Part No.
901 *A-3615-360-A
*A~3615-361-A
902 1-535-804-21
903 fA. 1-555-795-00
904 1-535-476-11
c2 1-101-004-00
3 1-101-004-00
ch 1-101-004-00
cs 1-101-004-00
C6 1-124-120-11
7 1-101-004-00
C8. 1-130-485-00
co 1-161-379-00
C10 1-123-356-00
ci 1-126-101-11
C12 1-124-472-11
C13 1-162-851-11
C4 1-123-330-00
cis 1-123-379-00
cl6 1-161-056-00
cl7 1-123-356-00
cs 1-123-369-00
C19 1-102-945-00
C19 1-102-947-00
c20 1-102-961-00
c21 1-102-962-00
22 1-123-379-00
C23 1-123-379-00
c24 1-123-330-00
C25 1-101-004-00
C27 1-102-958-00
C28 1-102-962-00
C29 1-101-004-00
30 1-101-004-00
31 1-162-851-11
C32 1-102-973-00
C33 1-101-004-00
c34 1-123-379-00
C35 1-126-101-11
C36 1-102-936-00
CFT 1-567-538-71
Cre 1-577-072-11
cT1-4
ci i 1-151-614-11
dl 8-719-911-19
02 8-719-911-19
03 8-719-200-02
04 8-719-911-19
05 8-719-911-19
9-955-600-21
CAPACITORS:
MF: uF, PF: wuF.
RESISTORS,
© All resistors are in ohms.
@ F: nonflammable
COILS
MMH: mH, UH: wH
SEMICONDUCTORS
HPA.
HPD...
The components identified by
mark A\ or dotted line with mark
aré critical for safety.
eplace only with part number
specified.
‘© IT model: Italian model
Description Ref.No. Part No Description
(IT)....MOUNTED PCB, MAIN 06 ——-1-808-344-11 DIODE SL-1042-79T
(AEP)...MOUNTED PCB, MAIN D7 —-8+719-911-19 DIODE 188119
08 —-8-719-911-19 DIODE 1$S119
SNAP, BATTERY
CORD, POWER IC] 8-759-821-46 IC LMBS6ON
TERMINAL 1C2 8+752-035-29 IC CXAI019S
CERAMIC 0.01MF Sov L3_-1-406-150-11 COIL, MW OSC
CERAMIC 0.01MF 50v (4 *1-405-962-00 (AEP)...COIL, FM OSC
CERAMIC 0.01MF 50v U4 1-459-815-11 (IT)....COIL (WITH CORE), FM OSC
CERAMIC
0.01MF
50v
U5
*1-422-291-11
COIL,
AIR-CORE
(FM
RF)
ELECT
220MF
20%
eV
6
*1-422-291-11
COIL,
AIR-CORE
(FM
RF)
CERAMIC 0.01MF 50V 7 1-402-405-11 ANTENNA, FERRITE-ROD (MW)
MYLAR
O.01ISMF
=
5%
SOV
Q1
—-8+729-119-76
TRANSISTOR
2SA1175-HFE
CERAMIC 0.0 MF 30% (16V Q2 -8+729-100-13 TRANSISTOR 25C2001-K2
ELECT TOMF 20% «16
ELECT JOOMF 20% 10V R4—-1-247-880-11 CARBON WOK 8% = 1/4W
ELECT 470MF 20% «10V R5 1-249-398-11 CARBON 27 8% /4W
R6 1-249-441-11 CARBON 100K 5% 1/4W
CERAMIC 0. 1MF 20% 16V R7 —-1=249-439-11 CARBON 6ak 5% 1/4W
ELECT 22MF 20% = 16V RB 1-249-435-11 CARBON 33K 5% 1/4W
ELECT 0.47MF 20% = 50V RQ 1-249-441-11 CARBON TOOK 5% = 1/4W
CERAMIC 0.027MF = 10% 25V R10 —-1-249-413-11 CARBON 470 5% «1/4W
ELECT TOME 208 16V
ELECT 4. 7ME 20% 50V R11 1=249-423-11 (AEP)...CARBON 3.3K 5% 1/4W
R11 1-249-429-11 (1T)....CARBON 10K 5% 1/4W
(AEP)...CERAMIC SPF 0.5PF SOV
(IT)....CERAMIC 10PF 0.5PF 50 R12 1-249-417-11 CARBON 1K 5% 1/4W
R13 1-249-421-11 CARBON 2.2K 5% 1/4W
CERAMIC 27°F 5% 50V R14 1-249-417-11 CARBON 1k 5% 1/4
CERAMIC 30PF 5% 50V RIS 1=249-428-11 CARBON 8.2K 5% (1/4W
ELECT 0.47MF 20% 50V R16 1-249-417-11 CARBON 1K 5% 1/4W
ELECT 0.47MF 20% 50V R17 1-249-417-11 CARBON 1K 58/4
ELECT 22M 20% 16V R18 1-249-441-11 CARBON WOOK 5% = 1/4W
CERAMIC 0.01NF 50V
RV] 1=228-790-00 RES, VAR, CARBON SOK (VOL)
CERAMIC 20°F % 50V
CERAMIC
30°F
5%
SOV
$1
1-572-023-11
SWITCH,
SLIDE
(FUNCTION)
CERAMIC 0.01MF 50v $2 1-552-370-31 SWITCH, SLIDE (BAND)
CERAMIC 0.01MF 50V $3 1-553-856-00 SWITCH, KEY BOARD
CERAMIC O.1ME 20% «16 (REPEAT ALARM/SLEEP OFF)
$4 1-553-856-00 SWITCH, KEY BOARD (SLEEP)
CERAMIC
100PF
5%
50V
$5
1~553-856-00
SWITCH,
KEY
BOARD
(CLOCK)
CERAMIC 0.01MF 50v $6 1~553-856-00 SWITCH, KEY BOARD (TIME SET-H)
ELECT
0.47MF
20%
—
50V
$7
1~553-856-00
SWITCH,
KEY
BOARD
(TIME
SET-M)
ELECT 1OOMF 20% 10V $8 1-553-856-00 SWITCH, KEY BOARD (ALARM)
CERAMIC 3PF 0.25PF SOV
SP1 1-503-082-00 SPEAKER
FILTER, CERAMIC
FILTER, CERAMIC T1 A, 1-449-940-11 TRANSFORMER, POWER
2 -404-790-11 TRANSFORMER, IF (AM)
CAP, VARIABLE
ACCESSORY & PACKING MATERIAL
DIODE 1$S119 Pe ae Se
DIODE 1$S119 3-751-271-41 (AEP)......MANUAL, INSTRUCTION
DIODE
10E2
(ENGL
ISH,
FRENCH
,GERMAN
,
DUTCH
,PORTUGUESE
,
SPANISH)
DIODE 1$S119 3-751-271-51 (AEP,IT)...MANUAL, INSTRUCTION
DIODE
1SS119
(ENGLISH,
SPANISH,
ITALIAN
,
SHEDISH)
[phone] INDIVIDUAL CARTON
+*3-902-464-01 CUSHION
English
9g0c0644-1
Sony Corporation Printed in Japan
Audio Group ©1990.3
Published by Customer Relations and Service Group
=¢g=