Sony cfs 200 service manual

Page 2

SAFETY CHECK-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 microampersl Leakage
current can be measured by any one of three
methods.

I. A commercial leakage tester, such as the
Simpson 229 or RCA WT-54OA. 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 2V AC range are
suitable. (See Fig. A)

To Exposed Metal
Parts on Set

AC
0. I 5 uF I 1.5 k n / git/here!

75 VI
T-F Earth Ground

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

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

MODEL IDENTIFICATION
-Model Number label-

US, AEP model: Carved on rear cabinet
CND, E91, E92, IT, AUS, TW model: Model number label

SONY®

MODEL N0. CFS-ZOO
RADIO CASSETTECORDER

I:

US, CND, E92 model: AC: 120V 60Hz 10W

AEP, E91 model : AC: 220V~50Hz 10W

AUS model : AC: 240V 50Hz 10W

IT model : AC: 220-230V~50Hz 10W
TW model : AC: 120V 60Hz 12W

OAbbreviations
CND: Canadian model
E91 : 220V AC Area model
E92 : 120V AC Area model
AUS: Australian model
IT : Italian model
TW : Taiwan model

ATTENTION AU coMPQSANT AYANT RAPPORT
A LA SECURITE!

LES COMPOSANTS IDENTIFIES PAR UNE MAROUE A
sua LES DIAGRAMMES SCHEMATIOUES ET LA LISTE
DES PIECES SONT camoues POUR LA sécumré
DE FONCTIONNEMENT. NE REMPLACER css COM-
POSANTs OUE PAR DES PIECES SONY DONT LES
NUMéRos SONT DONNES DANS CE MANUEL ou
DANS LES SUPPLEMENTS PUBLlés PAR SONY.