Sony CDP-295 - AC Leakage Test Procedure

MODEL
IDENNFICATION
-
SPÊgFICATION
T3BEL
-
cDP-195/2951491
cDP-195
cDP-29s
cDP-491
cDP-195
cDP-295
cDP-491
US,
Canadian
MODEL
AEP
MODEL:
Australian
MODEk
E. Saudi
Arabian
MODEU
AC120,
ûHz
1A|'t
AC220-230V,
50/60H2
AC?IOV,
50/60H2
AC110-120,
220-24OV,
50/@Hz'
12W
AEP
MODEL
UK
MODEU
AC22U23OV,
50/60H2
AC24ov,
50/@Hz
SAFEW
CHECK-oUT
After
correcting
the
original
service
problem'
perform
the
following
safety
check
before
releasing
the
set
to
lhe
customer:
Check
tÀe
antenna
terminals,
metal
rim,
"metallized"
knobs'
screws'
-d
utt
ott..
exposed
metal
pans for
AC
leakage'
Check
leakage
æ
described
below.
TEAKAGE
TEST
The
AC
leakage
from
any
exposed
metal
part
to earth
Sround
and
from
atl
exposed
metal
parts
to any
exposed
metal
part having
a rerum
to chassis,
must
not
exceed
0'5mA
(500
microampers)'
I-eakage
culrett
can
be
measured
by
any
one
of
three
methods'
l.
A
commercial
leakage
tester,
such
as
the
Simpson
229
or
RCA
WT-54OA.
Follow
the
manufacturers'instructions
to
us€
these
instruments.
2.
A
baneryoperated
AC
milliammeter'
The
Dau
Precision
245
digitat
multimeter
is suitable
for
this
job'
3.
Measuring
the
voltage
drop
across
a
resistor
by.
means
of
a
VOM
or
banery-operated
AC
volsneter'
The
"timit"
indica-
tion
is 0'75V,
so
analog
meters
must
have
an
accurate
low-
voltage
scale.
The
Simpson
250
arrd
Sanwa
SH-63Trd
are
.*util.,
oi
a
passive
VOM
that
is suit'able'
Nearly
all
ba$ery
op"*i"O
digital
multimeters
that
have
a
2V
AC
range
are
suitable.
(See
Fig.A)
To
Exposed
Metal
Parts
on Set
0.15pF
Fig.
A.
Using
an AC
voltmeter
to
check
AC
leakage'
SERIAL
NO.
MADE
IN JAPAN
SERIAL
NO
MAOE
IN FRANCE
-3-