Table of Contents
Advertisement
Cautions for Handling the Laser Pick-up
The laser pick-up KSS-210A is assembled and precisely
adjusted using a sophisticated manufacturing process in our
plant. Do not disassemble or attempt to readjust it. Please
keep the following instructions carefully in handling pick-up.
1. Handle with Care
(1) Storage
Do not store the pick-up in dusty, high-temperature 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 7x10?
W/cm' even if the intensity at the objective lens is 400uW
maximm. 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 at the
laser light beam either through the objective lens directly
nor another lens or a mirror.
(2) Poison of As
Since the LD chip contains As (Arsenic), as GaAs +
GaAlAs, as known as the poison, although the poison is
relatively weak, in comparing with others, e.g. As2Os,
AsCls etc., and the amount is small, 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 a soldering iron whose matal part is grounded.
The temperature of the soldering iron should be less than
320 °C (30W).
3. Actuator
(2) Cleaning the lens
it may change the specifications by attaching dust or
ash on the object 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
5. Handling
Please handle the laser pick-up with holding the slide base.
(rosin molded part).
6. Deterioration
be found by a formula
1"
»_1
iop 1"= D2
circumambient temperature 23 °C.
11
SR
ITNT
ONE e
e e e
i
i
j
i
E
|
i
f
i
k
:
é
Advertisement
Table of Contents
