Advertisement
ed
a
1. Handie with Care
(1) Storage
Do not store the pick-up in dusty, high-temperatured or
high-humidity environments.
(2) Please take care for preventing from shock by falling down
or careless handling.
2. Laser Diode (LD)
(1) Protect your eyes
The laser beam-may damage the human eye, since the
intensity of the focused spot may reach 7 x 10° W/em? even
if the intensity-at the objective lens is 400 14W maximum: As
the light beam spreads after focused through the objective
lens, it does not effect you in the place as far.as more than
:30 cms. However, do not look atthe Jaser light beam either
u
through"the-objective lens directly nor another lens or a
~
mirror.
mn
(2) Poison of As. _.
Since the LD chip contains As (Arsenic), as GaAs + GaAlAs,
as known as ithe poison, although the poison is relatively
weak, in comparing with others, e.g.As2O3, AsCls etc., and
the amount is.smail, avoid putting the chip in acid or an alkali
solution, heating it over 200°C or putting it into your mouth.
(3) Avoid surge.current or electrostatic discharge
The LD may be damaged or deteriorated by its own strong
light if a large current is-supplied to it, even if.only a short.
pulse. ... -
Make sure that there is no surge current in the LD driving
Circuit:by switches or else. Be careful to handle pick-up as
it may be.damaged in a moment by human electrostatic
discharge. The pins of the LD are short-circuited by solder
for protection during shipment.
For safety handling-of an LD, grounding the human body,
measuring equipments and jig is strongly recommended.
And still it is further desirable to make use of mat on the
Platform and floor for handling the LD.
To open the.short-circuit, remove the soldering quickly with
@ soldering iron-whose metal part is grounded.
The temperature of the soldering iron should be less than
320°C (30W).
3.Actuator
.
ken
(1) The performance of the actuator may be effected if magnetic
material is: located nearby, since the actuator has a strong
magnetic circuit. Do not permit dust to enter through the
clearance of the cover.
(2) Cleaning the lens:
:
:
It may change the specifications by ee
dust or ash on
the objective lens. Clean the lens with a.cleaning paper
dampened with a little water, not pressing lens with so much
strength by the cleaning paper.
4. Metal Bearing
As the metal bearing of Cu-compound sintered alloy is impreg-
nated with FROIL946P (*Part No. 529 0054 007), never fail to
supply the bushing with the same
lubricant at the time of
replacing the pick-up.
5. Handling
Please handle the laser pick-up with holding the side base
(rosin molded part).
When either a part of human body or-some other things may
happen to touch. directly with the circuit part of P.W.Board, it
may cause deterioration, take careful attention in handling this
base.
vere
19
44
Advertisement
