.... LASER BEAM SAFETY PRECAUTIONS (CD)
Do not look straight at the laser beam from the pickup and do Structural Safety Interlock
not point the beam at your fingers or any other part of your
body. This model has adisc chuck lever and top lid. This disc chuck
Note: The laser beam must never be allowed to enter the eyes lever and top lid prevent to expose the laser beam for users.
since this may damage the eyes.
Power must never be supplied to apickup with adamaged laser
output part (objective lens, etc.).
INVISIBLE LASER RADIATION EXPOSURE TO BEAM IS DANGEROUS CLASS 1LASER PRODUCT
OUTPUT POWER :0.6 mW MAX WAVELENGTH :790 nm
L
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CAUTION -USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED IN THE OPERATING INSTRUCTIONS MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
THE COMPACT DISC PIAYER SHOULD NOT BE ADJUSTED OR REP-AIRED BY ANYONE EXCEPT PROPERLY
QUALIFIED PERSONNEL.
1.
a.
., b.
Precautions for handling the pickup and semiconductors
(particularly the lCs)
The pickup and semiconductors (particularly th lCS) may be
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damaged if they come into contact with asou ~e 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 alarge number of optical and precision
parts. Do not store or repair it, therefore, in any location
with ahigh 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.)
C.DO not apply Srong 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.
d. The pickup is asingle integrated part which has been very
precisely adjusted. Therefore, its adjustment points and set
screws must not be touched.
2. How to prevent static during handling
a. When replacing any of the parts, disconnect the power plug
from the unit being repaired.
b. All measuring instruments, tools and repair equipment must
be grounded. Cover the work bench where the repair work
will be done with agrounded electrically conductive sheet.
c.Ground the metal part of the soldering iron in order to
safeguard against leakage of electricity from the heater.
d. Repair personnel must wear grounding bands around their
wrists to discharge static picked up by their bodies. These
bands are grounded through aresistor (with alM:
resistance).
Note: Under no circumstances must be the grounding bands be
e.
3.
a.
b.
grounded without aresistor (with a1Ml 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 asingle integrated part, is kept in a
conductive bag. Use this bag to convey the pickup from one
place to another. [n 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 acotton 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 ma)
seep inside the pickup.
●The lens is held in place by avery feeble supper
spring. Therefore, when cleaning the lens, avo
applying any more force by the cotton swab than
necessary since this may bend the support spring out
shape.
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