ICF-CD823L - Sony Audio Service Manual (repair manual)

icf-cd823l service manual
Model
ICF-CD823L
Pages
28
Size
4.35 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-cd823l.pdf
Date

Read Sony ICF-CD823L Service Manual online

ICF-CD823L
AEP Model
UK Model
SERVICE MANUAL
FM/MW/LW CD CLOCK RADIO
SPECIFICATIONS
Model Name Using Similar Mechanism CFD-930L
Optical Device Name KSM-213CDM
Optical Pick-UP Name KSS-213C
CD player section
System:
 Compact disc digital audio system
Laser diode properties:
 Material: GaAlAs
Wavelength: 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 µW
(This output is the value measured at a
distance of about 200 mm from the objective
lens surface on the optical pick-up block with
7 mm aperture.)
Frequency response:
 20-20,000 Hz 
+1
–1.5
 dB
Wow and flutter:
 Below measurable limit
Radio section
Frequency range:
Band Channel step
FM 87.5-108 MHz 0.05 MHz
MW 531-1,602 kHz 9 kHz
LW 153-279 kHz 9 kHz
General
Time display:
North and South America and Australia:
12-hour system
Other countries: 24-hour system
Speaker:
77 mm (3 
1
8
 inches) dia., 4 
Output:
i
 (headphones) jack (ø 3.5 mm stereo minijack)
(except North American model)
Power outputs:
1.2 W + 1.2 W
(at 10% harmonic distortion)
Power requirements:
220-230 V AC, 50 Hz
Dimensions:
Approx. 250 
×
 153 
×
 207 mm (w/h/d)
(Approx. 9 
7
8
 
×
 6 
1
8
 
×
 8 
1
4
 inches) incl.
projecting parts and controls
Mass:
Approx. 1,700 g (3 lb. 12 oz.)
Design and specifications are subject to change
without notice.
Ver 1.1  2001. 04
Sony Corporation
Personal Audio Company
Shinagawa Tec Service Manual Production Group
9-927-932-12
2001D1600-1
© 2001.4
— 2 —
TABLE  OF  CONTENTS
1. GENERAL
········································································ 4
2. DISASSEMBLY
2-1. CABINET, LOWER ······················································ 5
2-2. MAIN BOARD ····························································· 6
2-3. PANEL (FRONT) SUB ASSY ······································ 6
2-4. OPTICAL PICK-UP BOLCK (KSM-213CDM) ·········· 7
2-5. TRANSFORMER BOARD ··········································· 7
3. TEST MODE ·······························································
8
4. ELECTRICAL  ADJUSTMENTS ························
10
5. DIAGRAMS
5-1. BLOCK DIAGRAM ··················································· 11
5-2. CIRCUIT BOARDS LOCATION ······························· 13
5-3. SCHEMATIC DIAGRAM
– MAIN SECTION (1/2) – ·········································· 14
5-4. SCHEMATIC DIAGRAM
– MAIN SECTION (2/2) – ·········································· 17
5-5. PRINTED WIRING BOARD
– MAIN SECTION – ·················································· 20
5-6. PRINTED WIRING BOARD
– PANEL SECTION – ················································· 23
5-7. IC PIN FUNCTION DESCRIPTION ························· 25
5-8. IC BLOCK DIAGRAMS ············································ 26
6. EXPLODED  VIEWS
6-1. LOWER CABINET SECTION ··································· 29
6-2. UPPER CABINET SECTION ···································· 30
6-3. OPTICAL  PICK-UP  SECTION
(KSM-213CDM) ························································· 31
7. ELECTRICAL  PARTS  LIST ·································
32
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
!  OR  DOTTED
LINE  WITH  MARK  
!  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
PUBLISHED  BY  SONY.
Note 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 —
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
This Compact Disc player is classified as a CLASS 1
LASER product.
The CLASS 1 LASER PRODUCT label is located on the
bottom exterior.
CHUCK  PLATE  JIG  ON  REPAIRING
On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.
• Code number of Chuck Plate Jig: X-4918-255-1
LASER  DIODE  AND  FOCUS  SEARCH
OPERATION  CHECK
1. Open the CD lid.
2. Turn on S501 as following figure.
3. Confirm that the laser diode emission while observing the
objecting lens. When there is no emission, Auto Power Control
circuit or Optical Pick-up is broken.
Objective lens moves up and down once for the focus search.
Insert a precision 
screwdriver and 
push S501.
laser diode 
emission
— 4 —
SECTION  1
GENERAL
Setting the Clock
and Date
Set the alarm setting dial to ALARM
MODE OFF.
Plug in the clock radio.
The display will flash “AM 12:00” or “0:00”.
Press CLOCK for a few seconds.
You will hear a beep and the year will start to
flash in the display.
Press CLOCK + or  until the correct
year appears in the display.
Press CLOCK once.
Repeat steps 4 and 5 to set the month,
day, hour, and minute.
After setting the minute, press CLOCK to start
the counting of the seconds, and you will
hear two short beeps.
• To display the year and date, press SNOOZE/
DATE/SLEEP OFF once for the date, and within
2 seconds press it again for the year. The
display shows the date or year for a few
seconds and then changes back to the current
time.
• To set the current time rapidly, hold down
CLOCK + or .
• The clock system varies depending on the
model you own.
12-hour system: “AM 12:00” = midnight
24-hour system: “0:00” = midnight
• In step 6, when you press CLOCK after the
minute setting to activate the clock, the seconds
start counting from zero.
• When the alarm setting dial is set to ALARM
TIME SET A or B, the clock cannot be set.
To change the display to the
daylight saving time (summer time)
indication
Press D.S.T./SUMMER T.
“s” is displayed and the time indication
changes to summer time.
To deactivate the summer time function, press
D.S.T./SUMMER T. again.
This section is extracted from
instruction manual.
Page of 28
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Download Sony ICF-CD823L Service Manual (Repair Manual)

Here you can read online and download Sony ICF-CD823L Service Manual in PDF. ICF-CD823L service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony ICF-CD823L Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.