Tascam CD-450 - Pickup Assembly Handling and Maintenance; Electrostatic Discharge (ESD) Protection; LD Terminal Strapping and Soldering; Material Handling and Disposal Guidelines

CD-450
3.
CHECKS
1. Handling
the pickup
assembly
1. t'
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•
Before servicing
the pickup assembly
be sure to prevent
electrostatic-inducer
destruction by grounding
not only
test equipment
in use
but
also
yourself.
*
Electrostatic
charge drastically shortens
the operating
life of the laser
diode or possibly
results in its
destruction.
•
Hold the
slide base when handling
the pick-up.
(Fig. 3-1)
•
LD terminals are
factory-strapped before shipment
to
protect LD from
electrostatic discharges
during
transportation. (Fig. 3-2)
After connector insertion,
unstrap the LD terminal
with
a
soldering
iron.
The temperature
of the soldering iron
tip must be 320T1
or
below ( 30W
)
and
the unstrapping should
be
performed
quickly.
•
Don't disassemble
the pickup
ass’y.
•Don’t
apply shock to the pickup
ass'y.
•Don't place the
assembly in a place
subject to excessive
dust, heat or
moisture.
•
The
LD chip is manufactured
from GaAs and
GaAlAs.
which
contains toxic As (Arsenic).
Parts removed in
servicing should
be disposed of with
due care.
*
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(Fig.
3-1)
•
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(Fig.
3-2)
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As
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2. Objective
•
Never look
directly into the LD
or observe the laser
beam through another lens
or mirror.
•
Don't
touch the objective with
fingers.
•
If
objective becomes
dirty, playback will
deteriorate.
To clean
the objective, moisten
a good cleaning
tissue,
such
as made by KODAK,
in isopropyl alcohol
and wipe
the objective
gently. Wipe off and
excess fluid with
a
dry
cleaning tissue.
2
.
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(KODAK
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