ICF-C490, ICF-CD863, ICF-CD863L — Sony Audio Service Manual (repair manual)

Model
ICF-C490 ICF-CD863 ICF-CD863L
Pages
16
Size
661.06 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-c490-icf-cd863-icf-cd863l.pdf
Date

View Sony ICF-C490 / ICF-CD863 / ICF-CD863L Service Manual online

SERVICE MANUAL
FM/AM CLOCK RADIO
E Model
Australian Model
SPECIFICATIONS
ICF-C490
Ver 1.1  2002.07
9-873-921-02
Sony Corporation
2002G0500-1
Personal Audio Company
C
 2002.07
Published by Sony Engineering Corporation
Time display
Australia: 12-hour system
Other countries: 24-hour system
Frequency range
FM: 87.5-108 MHz
AM: 530-1 710 kHz
Speaker
Approx. 6.6 cm ( 2 
5
/
8
 inches) dia. 8 
Power output
120 mW (at 10 % harmonic distortion)
Power requirements
Australia: 240 V AC, 50 Hz
Other countries: 220-230 V AC, 50 Hz
For power backup: 9 V DC, one 6F22 battery
Battery life
Approx. 20 hours (for clock backup) using Sony
006P (6F22) battery
Dimensions
Approx. 200 
× 94 × 113 mm (w/h/d)
(7 
7
/
8
 
× 3 
3
/
4
 
× 4 
1
/
2
 inches) not incl. projecting parts and
controls
Mass
Approx. 645 g (1 lb 6.75 oz) not incl. battery
Design and specifications are subject to change
without notice.
2
ICF-C490
TABLE  OF  CONTENTS
1.
GENERAL
..................................................................
3
2.
DISASSEMBLY
2-1. Disassembly Flow ...........................................................
4
2-2. Cabinet (Upper) Assy ......................................................
4
2-3. MAIN Board ...................................................................
5
3.
ELECTRICAL  ADJUSTMENTS
........................
6
4.
DIAGRAMS
4-1. Block Diagram ...............................................................
8
4-2. Note for Printed Wiring Boards and
Schematic Diagram .........................................................
9
4-3. Printed Wiring Boards .................................................... 10
4-4. Schematic Diagram ........................................................ 11
5.
EXPLODED  VIEWS
5-1. Cabinet Section ............................................................... 12
5-2. Chassis Section ............................................................... 12
6.
ELECTRICAL  PARTS  LIST
.............................. 13
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
0
  OR  DOTTED
LINE  WITH  MARK  
0
  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  PUB-
LISHED  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.
3
ICF-C490
SECTION  1
GENERAL
This section is extracted from
instruction manual.
SNOOZE
BUZZER
TIME SET
RADIO
ALARM
ALARM
RESET
HOLD
RADIO BUZZER
CLOCK
OFF
RADIO BUZZER
RADIO+BUZZER
ALARM MODE
ALARM TIME/CLOCK SET
BUZZER VOLUME
BRIGHTNESS
LOW          HIGH
FAST
SLEEP
FAST
RADIO
ON
RADIO
OFF
BAND
VOL
TUNING
AM    FM
AC power cord
Cordon d’alimentation
secteur
Netzkabel
FM wire antenna
Fil d’antenne FM
UKW-Wurfantenne
Indicator
Indicateurs
Anzeige
Stand
Support
Ständer
There is a tactile dot beside volume to show the
direction to turn up the volume.
Un point tactile, situé à côté de la molette de volume,
indique le sens dans lequel il faut tourner pour
augmenter le volume.
Neben dem Lautstärkeregler befindet sich ein
fühlbarer Punkt. Dieser gibt die Richtung an, in der
man die Lautstärke erhöht.
A
Setting the Clock
To control the visibility of the display, set
BRIGHTNESS for the display to HIGH or LOW
according to your preference.
1
Plug in the clock radio.
The display will flash “AM 12:00” or “0:00”.
2
Set the ALARM TIME/CLOCK SET
switch to CLOCK.
3
Press FAST+FAST– or + to adjust the
time.
When you press FAST+, the time is raised
rapidly.
When you press FAST–, the time is lowered
rapidly.
When you press +, the time is raised in one-
minute steps.
4
Set the ALARM TIME/CLOCK SET
switch to HOLD.
Make sure that the ALARM TIME/CLOCK SET
switch is set to HOLD. When it is set to HOLD,
you cannot see the red label underneath.
Otherwise, the displayed time might be
changed if FAST+FAST– or + happens to be
pressed.
The clock system varies depending on the model
you own.
12-hour system: “AM 12:00”=midnight
24-hour system: “0:00”=midnight
To display minute and second, press SNOOZE.
Example: When the current time is 7:15:10, the
display will become:
7
 
:15
 ,
 
5
 
:10
Lower of minute digit Second digits
The display returns to the current time when you
release SNOOZE.
To adjust the time exactly to the second, press +
briefly with the time signal.
ICF-C490
4
• This set can be disassembled in the order shown below.
2-1.
DISASSEMBLY  FLOW
SECTION  2
DISASSEMBLY
Note:
 Follow the disassembly procedure in the numerical order given.
2-2.
CABINET (UPPER)  ASSY
3
screw (P3 
×
 14)
S101
1
cap (R)
4
screw (P3 
×
 30)
2
screw (P3 
×
 30)
1
cap (L)
2
screw (P3 
×
 30)
S102
5
cabinet (upper) assy
knob (alarm)
knob (clock)
Note : When installing 
cabinet (upper) assy,
adjust S102, S101 and 
the knobs (clock, alarm).
SET
2-2. CABINET (UPPER) ASSY
(page 4)
2-3. MAIN BOARD
(page 5)
ICF-C490
5
2-3.
MAIN  BOARD
MAIN  BOARD  SETTING
1
knob (band)
qs
claw
3
2
screw (P3 
×
 14)
qd
main board
6
speker (6.6 cm) (SP1)
5
LED board
9
washer
8
two screws 
(P3 
×
 14)
7
screw 
(PTPWH3 
×
 8)
qa
power cord (PC1)
0
power board
9
washer
4
antenna (wire) (W7)
knob (vol)
knob (tuning)
B
A
RV1
shaft of CV1
Note 1 : When installing the main board,
adjust RV1 and the knob (vol).
Note 2 : When installing the main board,
turn the shaft of CV1 in the direction 
of arrow 
A
 fully and the knob (tuning)
in the direction of arrow 
B
 fully 
before adjusting the shaft of CV1 
and the knob (tuning).

Download Sony ICF-C490 / ICF-CD863 / ICF-CD863L Service Manual (Repair Manual)

Here you can view online or download Sony ICF-C490 / ICF-CD863 / ICF-CD863L Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony ICF-C490 / ICF-CD863 / ICF-CD863L Audio. Information contained in Sony ICF-C490 / ICF-CD863 / ICF-CD863L service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).