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| TC-K333ESG/K950ES
MODEL IDENTIFICATION
SAFETY
CHECK-OUT
— Specification Label —
After
correcting
the original
service
problem,
perform the following safety check before releasing
TC- K333ESG
the set to the customer:
TC- K950ES
Check the antenna terminals, metal trim, ''metallized"
knobs, screws, and all other exposed metal parts for
AC leakage. Check leakage as described below.
SONY:
= wo. 1.G,@
STEREO CASSETTE DECK
EEA eee
WML
LLL
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
0.5mA
(500
microampers).
Leakage
current
can
be
measured
by
any
one
of three
SERIAL NO.
methods:
|
MADE
IN JAPAN
1.
A
commercial
leakage
tester,
such
as
the
Simpson
229
or RCA
WT-S40A.
Follow the
manufacturers' instructions to use these instru-
US, Canadian Models:
AC:
120V 60Hz
31W
ments.
AEP, West Germany
Model:
AC:
220V
\50/60Hz 31W
nw
A battery-operated AC milliammeter.
The Data
Precision 245 digital multimeter is suitable for
UK Model:
AC: 240V "U50/60Hz 31W
this job.
E Model:
AC:
120, 220, 240V
;
:
T\)50/60Hz 31W
.
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
voltmeter
|
| «(0.78 V)
=
Earth Ground
Using an AC voltmeter to check AC leakage.
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