Sony hcd h 490

Page 2

Wow and flutter
0.1% WFlMS i 0.3% (DIN)

Compact disc player section

System Compact disc digital audio system

Laser Semiconductor laser
Wavelength=78lJ - 790 nm

General
. . . Power
Destination Power requirements consumption
Canadian model 120 V AC, 50 Hz 55 W
Australian model 220 - 240 V AC, 50 Hz 55 W

AEP! Gama"! "3 220 - 230VAC, 50/60 Hz 55 w
East European model

UK model 240 V AC, 50 Hz 55 W

E,SaudiArabia, 110-120V/220V-240V

Malaysia, Singapore AC, 50/60 Hz Adjustable 55 W

model with the Voltage Selector
DimenSIons

Approx. 225 x 285 x 275 mm (w/h/d)
incl. projecting pans and controls
Mass Approx. 5.2 kg

Design and specifications subject to change
without notice.

Note
This appliance conforms with EEC Directive
B7/308/EEC regarding interlerence suppression.

Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.

"DOLBY" and the doubleD symbol DU are trademarks of
Dolby Laboratories Licensing Corporation.

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
SONV PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

A LA sEcunITE!

LEs COMPOSANTS IDENTIFIES PAR UNE MAROUE A
sun LES DIAGRAMMES SCHEMATIOUES Er LA LISTE
DES PIECES SONT CRlTIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER cEs coM-
POSANTS oUE PAR DES PIECES sonv DONT LES
NUMERos SONT DONNES DANS CE MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR SONY.

SAFETY CH ECK-OUT

After correcting the original service problem,
perform the following safety check before releasing
the set to the customer:

Check the antenna terminals, metal trim, metallized
knobs, screws, and all other exposed metal parts for
AC leakage. Check leakage as described below.

LEAKAGE TEST

The AC leakage from any exposed metal part to
earth ground and from all exposed metal parts to any
exposed metal part having a return to chassis, must
not exceed 0.5 mA (500 microampers). Leakage
current can be measured by any one of three
methods.

1. A commercial leakage tester, such as the
Simpson 229 or RCA WT-540A. Follow the
manufacturers instructions to use these instru-
ments,

2, A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.

3. Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt-
meter. The limit" indication is 0.75 V, so
analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM that
is suitable, Nearly all battery operated digital
multimeters that have a 2 V AC range are
suitable. (See Fig. A)

To Exposed Metal
Parts on Set

AC
0.15m: gram / valnneter
(0.75VI

1.5 Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.