Sony hcd h 550 service manual

Page 2

Outputs

HEADPHONES (stereo mini jack):
accept headphones of

8 ohms or more.

accept impedance of 6 to
16 ohms.

SPEAKER:

Supplied accessories

AM loop antenna (1)

Remote commander (1)

Sony SUM<3 (N5) batteries (2)

General
- - Power Power
Destination requirements consumption
US. CND 120 V AC.
model 50/60 Hz 3° w
AEP. (:15. EE. zzo - 230 v Ac. so w
G. IT model 50/60 Hz
UKmudel 240 v AC, 50 Hz 30 w
220 - 240 V AC.
AUS model 50 Hz 80 W
110 - 120/
, . 220 - 240 V AC.
Other model adjustable. 80 W
. 50/50 Hz _
Dimensions Approx. 225 x 285 x 275
mm (w/h/d)
incl. projecting parts and
controls
Mass Approx. 5.7 kg

Design and specifications are subject to
change without notice.

i 0 Abbreviations

AUS :Australian IT :Italian
CND :Canadian JE :Tourist
EA : Saudi Arabia MX :Mexican
EE. : East European MY :Malaysia
G :German SP :Singapore

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 wr-540A. Follow the
manufacturers instrUCtions to use these instru-
ments. '

2. A battery-operated AC milliammete'r. 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 0.75V, 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 2 2V AC range are
suitable. (See Fig. A)

SAFETY-RE LATED COMPONENT WARNING! I

COMPONENTS IDENTIFIED BV 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 BV SONY.

To Exposed Metal
Parts on Set

A C
/ vo/rme ter
(0. 75 V)

0.15uF réljkfl
L_

"7' Earth Ground

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

ATTENTION AU COMPQSANT AYANT RAPPORT
A LA secumré!

LES CDMPOSANTS IDENTIFIES PAR UNE MAROUE A
sun LES DIAGRAMMES SCHéMA'noues ET LA LISTE
DES PIECES sour CRITIQUES POUR LA sécumré
DE FONCTIONNEMENT. NE HEMPLACER cas COM-
POSANTS QUE PAR DES PlécEs sonv DONT LES
NUMéRos sonr DONNES DANS CE MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR SONY.