Sony CDP-C8ESD - Page 3

| CDP- C8ESD/C700/ C800
MODEL IDENTIFICATION
SAFETY CHECK-OUT — Specification Labels — CDP-CS8ESD
CDP-C700
After correcting the original service problem, CDP- C800
perform the following safety check before releasing
the set to the customer:
Check the antenna terminals, metal trim, ‘‘metallized” S ON Y. MODEL NO. Whtth5ha
knobs, screws, and all other exposed metal parts for
AC
leakage.
Check
leakage
as
described
below.
COMPACT
DISC
PLAYER
WLM MLL LLL
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 0.5mA (500 microampers). Leakage
current can be measured by any one of three
methods,
SERIAL NO.
MADE IN JAPAN
1.
x
commercial
leakage
oe
eee
a
US,
Canadian
model:
AC
120
V
60
Hz
12W
BILP
Sioa
a7
CERCA
WT
One
ae
ovew
Sie
AEP
model:
AC
220
V
50/60
Hz
12W
ieee
instructions
to
use
these
instru-
E
model:
AC
110-120,
220-240
V
50/60
Hz
12W
tv
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
Sitesise are examples - a passive VOM that
. 2 f3, UP BLOCK OR BASE UNIT
is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are
he | i i i ick-
suitable. (See Fig. A) 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.
To Exposed Metal
Parts on Set
Seinetae
(0.75 V) 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. There-
fore, when checking the laser diode emission, observe
Using
an
AC
voltmeter
to
check
AC
leakage.
more
than
30
cm
away
from
the
objective
lens.
= Earth Ground
]
;
a