Sony ICF-C2W - Safety Check-out Procedures; Leakage Test; Model Identification

~~ ICF-C2W/C25W -
SAFETY
_ After correcting the original service problem,
perform the. following safety check before releasing
- the set to the customer: ee
‘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. 2
exposed metal part having a return to chassis, must a
Leakage
current can be measured by any one of three
not exceed 0.5mA (500 microampers).
methods.
1. A commercial leakage tester,
Simpson 229 or RCA WT-S540A. 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.
such as the
CHECK-OUT
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 2V AC range are
suitable. (See Fig, A)
To. Exposed Metal °
Partson Set
AC.
‘voltmeter
(0.75 V)
Earth Ground
; \Fig. A. Using an AC voltmeter to check AC leakage.
MODEL
—Model
IDENTIFICATION
Number Label—
ICF-C2W (US,Canadian model)
ICF-C2W (AEP,WG model) |
ICF-C25W (Canadian model)
SONYe MODEL NO. (,
FM/AM 2BANDS [ss
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 TO SAFE
: OPERATION. . _ REPLACE. THESE COMPONENTS WITH
‘SONY PARTS WHOSE PART NUMBERS APPEAR AS
- SHOWN IN THIS: MANUAL OR. AN SUPPLEMENTS PUB-
LISHED BY ‘SONY.
: Carved on
WG model: West Germany model
lower cabinet
\ Model number ladel
ICF-C2W
ICF-C25W
US,Canadian model: AC: 120V 60Hz 6W
AEP,WG model : AC: 220V~50Hz 6W
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.
—2?—