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MODEL
IDENTIFICATION
—Model
Number Label—
CDP-C215
| CDP-C211
CDP-C315
SONY:
mover nw LZ
COMPACT OISC PLAYER
WU
bbb
US, Canadian model:
AC:
120V 60HZ
11W
AEP model:
AC:
220-230V~50/60Hz
UK, Australian model:
AC:
240V~50/60Hz
E model:
AC:
110-120V,
220-240V~50/60Hz
NOTES
ON
HANDLING
THE
OPTICAL
PICK-
UP
BLOCK
OR
BASE
UNIT
The
laser
diode
in the
optical
pick-up
block
may
suffer electrostatic breakdown
because of the poten-
tial difference generated by the charged electrostatic
load, etc. on clothing and the human body.
During
repair,
pay
attention
to electrostatic
break-
down
and
also
use
the
procedure
in the
printed
matter which is included in the repair parts.
The
flexible
board
is easily
damaged
and
should
be
handled with care.
NOTES
ON LASER DIODE EMISSION
CHECK
The laser beam on this model
is concentrated
so as to be
focused on the disc reflective surface by the objective lens in
the optical pick-up block. Therefore, when checking the laser
diode emission, observe from more than 30cm away from the
objective lens.
| CDP-C211/C215/C315
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 meta! 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
methods.
1.
A
commercial
leakage
tester,
such
as
the
Simpson
229
or RCA
WT-S40A.
Follow
the
manufacturers' instructions to use these instru-
ments.
tu
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
0.15uF ==
$1.5 kQ
voltmeter
(0.75 V)
ars
=
Earth Ground
Fig. A.
Using an AC voltmeter to check AC leakage.
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