Notes Regarding Compact Disc Player Repairs; Notes Regarding Handling Of The Pickup - Sanyo CDF-R800 Service Manual

NOTES REGARDING COMPACT DISC PLAYER REPAIRS
(1) Preparations
1) Compact disc players incorporate a great many ICS as well
as the pickup (laser diode). These components are
sensitive to , and easily affected by , static electricity. If
such static electricity is high voltage, components can be
damaged, and for that reason components should be
handled with care.
2) The pickup is composed of many optical components and
other high-precision components. Care must be taken,
therefore, to avoid repair or storage where the temperature
of humidity is high, where strong magnetism is present, or
where there is excessive dust.
(2) Notes for repair
1) Before replacing a component part, first disconnect the
power supply lead wire from the unit.
2) AH equipment, measuring instruments and tools must be
grounded.
3) The workbench should be covered with a conductive sheet
and grounded.
When removing the laser pickup from its conductive bag,
do not place the pickup on the bag. ( This is because there
is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron
should be grounded.
5) In removing short circuit solder of LASER PICKUP, use
ceramic heater type of soldering iron.
6) Workers should be grounded by a earth band (1 MQ).
7) Care should be taken not to permit the laser pickup to
come in contact with clothing, in order to prevent static
electricity changes in the clothing to escape from the
earth band.
8) The laser bea m frOm the Dicku~ should
NEVER be
directly facing the eves o r bares kin.
Countermeasure of electrostatic
Resistor A
(lMCr)
~
NOTES REGARDING HANDLING OF THE PICKUP
(1) Notes for transport and storage
1)
2)
3)
In retaining the product, high temperature, high humidity
and dusty circumstances must be avoided. After taking it
out of packing box, never leave it at the place where dust
can occur. (Take every possible preventive means
against dust. )
The pickup should always be left in its conductive bag
until immediately prior to use.
As this is minutely adjusted, be careful never give it any
shock from drop or careless handling.
Storage in conductive bag
Drop impact
(2) Repair notes
1) The pickup incorporates a strong magnet, and so should
never be brought close to magnetic materials.
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