Sony CDP-X55ES - Page 2

CDP- X55ES |
TABLE OF CONTENTS
SAFETY CHECK-OUT
section Title Page
After correcting the original service problem,
Specifications »++++++++++resereseeeerereseereresescecs 1 perform the following safety check before releasing
Model Identification :+:++s+secec cece ee eeeeeeeeeeeeees 3 the set to the customer:
Check the antenna terminals, metal trim, “metallized”
4: (GENERAL © ss5S6 sc terieiecee te tetteetevevinie: 5 knobs, screws, and all other exposed metal parts for
AC leakage. Check leakage as described below.
DS RDSJUSTMENTS hae ecee ood seb cot deeeawe nig etiecwe 6
LEAKAGE TEST
3. DIAGRAMS The AC leakage from any exposed meta! part to
3-1. Semiconductor Lead Layouts :++++++++++++ss 8 earth ground and from all exposed metal parts to any
BoD -Giredi Boas. boca ite scteeree aeons 9 exposed metal part having a return to chassis, must
. as not exceed 0.5mA (500 microampers). Leakage
3-3. Printed Wiring Boards:++++-++++++++eeeeeees 10
current can be measured by any one of three
3-4, Schematic Diagram--++++++eseeee eee eeeee rene 15 rathode:
Roe BO DIS a ews ners “ 1. A commercial leakage tester, such as the
Simpson 229 or RCA WT-S540A. Follow the
4. EXPLODED VIEWS ----erree essere cee eeeeeeeeeeeee 22 manufacturers’ instructions to use these instru-
ments.
5. ELECTRICAL PARTS LIST <--++:+eceesceeeeeeeeee 27 2. A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.
E Model :
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-
For the customers of the model equipped with the
voltage selector
Check that the voltage selector is set to the local power
line voltage. If not, set the selector to the correct position
before connecting the AC power cord to a wall outlet. 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 2V AC range are
suitable. (See Fig. A)
To Exposed Metal
Parts on Set
AC
voltmeter
SAFETY-RELATED COMPONENT WARNING!! | (0.75 V)
COMPONENTS IDENTIFIED BY MARK /\ OR DOTTED
LINE WITH MARK A\ 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.
= Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE MARQUE /\
SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIECES SONY DONT LES
NUMEROS SONT DONNES DANS CE MANUEL OU
DANS LES SUPPLEMENTS PUBLIES PAR SONY.