Sony icf cd 831 l service manual

Page 2

ICF-CD831/CD831 L
Ver1.1

General
Time display:
CND. UK. AUS, MX model:
erliour system
AER IT model: 24rhour system
Speaker:
66 mm (2 5/8 Inches) (lion 8 9
Power outputs:
1 w + 1 w (at 10% harmonic distortion)
Power requirements:
CND. MX model:
120 V AC. 60 HZ
AER UK, AUS model: 230 V AC, 50 HZ
Dimensions:
Approx. 22) x 104 x 218 mm (w/h/d)
(Approx, 9 m; x 4 m x x 5/8 incheshncl.
projecting parts and controls
Mass:
Approx. 1.650 g (3 lb. 10 01.)
UK model: Approx. 1.700 g (3 1b. 12 oz.)

Design and specifications are subject to change Without
notice.

. Abbreviation
CND : Canadian model
AUS : Australian model
IT : Italian model
MX : Mexican model

CLASS l LASER PRODUCT

LUOKAN l LASERLAITE
KLASS 1 LASERAPFARAT

This Compact Disc player is classified as a CLASS I
LASER product.

The CLASS I LASER PRODUCT label is located on
the bottom exterior.

CAUTION

Use of controls or adjustments or performance of proce7
dures other than those specified herein may result in hazA
ardous radiation exposure.

Flexible Circuit Board Repairing

' Keep the temperature of the soldering iron around 270°C during
repairing.

' Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times)

' Be careful not to apply force on the conductor when soldering
or unsoldering.

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.

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown 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 e ion,
observe from more than 30 cm away from the objective lens.

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK A OR DOTTED LINE
WITH MARK A ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL T0 SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITEI!

LES COMPOSANTS IDENTIFIES PAR UNE MAROUE A SUR LES
DIAGRAMMES SCHEMATIQUES ET LA LISTE DES PIECES SONT
CRITIQUES POUR LA SECURITE DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIECES SONY
DONT LES NUMEROS SONT DONNES DANS CE MANUEL OU
DANS LES SUPPLEMENTS PUBLIES PAR SONY.