Sanyo CDF-R800 Service Manual page 7

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NOTES REGARDING HANDLING OF THE
2) The pickup should always be handled correctly and
carefully, taking care to avoid external pressuer and
impact. If it is subjected to strong pressure or impact, the
result may be an operational malfunction and/or damage
to the printed circuit boaed.
\
How to hold the pickup
Grabbina
Drint circuit boa rd or DUIling
co nnectina wire causes function
deterioration or failure. Be sure to hold
the whole hous ins.
3) If LASER PICKUP or MECHA ASSY is set or reset with
power supplied. LASER DIODE or PHOTO DETECTOR
is damaged. Be sure to turn off power supply switch
before setting or resetting LASER PICKUP or MECHA
ASSY.
4) To prevent LASER DIODE or PHOTO DETECTOR from
being deteriorated or damaged by static electricity, be
sure to thoroughly practice earthing as a preventive
means against damage from static electricity.
5) Take every possible means against damage of LASER
DIODE or PHOTO DETECTOR from overcurrent or
overvoltage. (Example--Use power source equipped with
current limiter. )
6) If fingerprint or any other foreign material is attached on
objective lens, the function is extremely deteriorated. Be
sure never to touch objective lens. Particularly, be very
careful in removing or fitting lens cover.
PICKUP
7) PICKUP is a single part, and very minutely adjusted as
such. Therefore, never touch anv of adjustment DO
fixina screws or Drint circuit b
ints.
oard of PICKUP.
(1) If you touch partially fixed volume soldered on circuit
board (beam quantity adjusting volume), emitted
beam quantity (RF LEVEL) can change. Never touch
partially fixed volume.
(2) If there occurs even a very small shift in the circuit
board fixture position, the function greatly changes. In
handling LASER PICKUP, be very careful to hold
metal part of housing (HOUSING).
8) If metal part of adjusting rod or driver touches circuit
board when power is supplied, it can cause failure. Be
careful.
9) Laser beam may damage the eyes!
Absolutely never permit laser beams to enter the eyes!
Also NEVER switch ON the power to the laser output
part (lens, etc.) of the pickup if it is damaged.
LaserBeam
~+
NEVER look directly at the
laser beam, and don't let
contact fingers or other
exposed skin.
o
1o)
11)
Cleaning the lens surface
If there is dust on the lens surface, the dust should be
cleaned away by using an air brush (such as used for
camera lens). The lens is held by a delicate spring.
Never attempt to disassemble the pickup.
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