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LASER
BEAM
SAFETY
PRECAUTIONS
(CD)
Do not look straight
at the laser
beam
from
the pickup
and do not
Structural
Safety
Interlock
point the beam
at your fingers
or any other
part of your body.
This model
has a disc chuck
lever
and top lid. This disc chuck
lever
Note:
The laser beam
must never
be allowed
to enter
the eyes since
and top lid prevent
to expose
the laser beam
for users.
this
may damage the eyes.
Power
must
never
be supplied
to a pickup
with
a damaged
laser
output
part (objective
lens, etc.).
INVISIBLE
LASER
RADIATION
EXPOSURE
TO
BEAM
IS
DANGEROUS
CLASS
1 LASER
PRODUCT
OUTPUT
POWER
: 0.6 mW MAX
WAVELENGTH
: 790 nm
1,
a.
b.
c.
d.
2,
a.
b.
c.
CAUTION-INVISIBI.E
LASER
----
I
t
RAOIATION WHENPANEL
.--4
OPEN ANOINTERLOCK
OVERRIOOEN.
H
EE!
1
I
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W
Precautions
for
handling
the
pickup
and
semiconductors
(particularly
the ICS)
The pickup and semiconductors
(particularly
the ICS) may
be damaged
if they come
into contact
with a source
of
high
voltage
static
electricity.
Do not
bring
them,
therefore,
into contact with or into the vicinity
of anything
which has been charged with high voltage static.
The pickup
consists
of a large
number
of optical
and
precision
parts.
Do not store or repair it, therefore,
in any
location
with a high
temperature,
high
humidity,
high
magnetic
fields
or high dust concentration.
(Since
the
pickup contains a powerful magnet, it must not be brought
near any magnetized
objects.)
Do not apply
strong
external
pressure
to the pickup
or
subject
it to impact.
Actions
like these
can cause the
printed circuit board to crack or malfunctioning
to occur.
The pickup
is a single
integrated
part which
has been
very precisely
adjusted.
Therefore,
its adjustment
points
and set screws must not be touched.
How to prevent
static during
handling
When
replacing
any of the parts, disconnect
the power
plug from the unit being repaired.
All measuring
instruments,
tools
and repair
equipment
must be grounded.
Cover
the work bench
where
the
repair
work will be done
with
a grounded
electrically
conductive
sheet.
Ground
the metal
part of the soldering
iron in order
to
safeguard against leakage of electricity
from the heater.
,,,
r
d
[F,]
Repair personnel
must wear grounding
bands around their
wrists to discharge
static picked up by their bodies.
These
bands
are grounded
through
a resistor
(with
a 1 Mf2
resistance).
Note: Under no circumstances
must be the grounding
bands
e.
3.
a.
b.
be grounded
without
a resistor (with a 1ML? resistance)
since doing so involves the risk of electric shocks.
Since static in the clothes of the repair personnel
will not
be discharged
by wearing
grounding
bands,
every care
must be taken not to allow the clothes to touch the pickup
and semiconductors
(particularly
the ICS).
>'"
"
The pickup, which is a single integrated
part, is kept in a
conductive
bag.
Use this bag to convey the pickup from
one place to another.
In order to avoid damage
resulting
from static which may occur when the pickup
is removed
from the bag, make sure that it is not placed on top of the
bag.
Cleaning
the lens surface
Blow off dust on the lens using the kind of air brush which
is used for cameras.
Remove
stubborn
dirt
with
a cotton
swab
dipped
in
isopropyl
alcohol.
Do not use any other type of cleaning
fluid since it may mark the plastic lens.
Notes:
Do not use too much isopropyl
alcohol:
the excess
may seep inside the pickup.
The lens is held in place by a very feeble
support
spring.
Therefore,
when
cleaning
the
lens,
avoid
applying
any more force by the cotton swab than is
necessary
since this may bend the support
spring
--._-
out of shape.
-1-
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