Mitsubishi Electric PD-5010, Service Manual

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SAFETY PRECAUTIONS
1 . Cautions for disassembly
(1) For the wall-hang type
• During handling, try to support the set
at its frame. Never touch the filter
or glass surface. Assistant personnel on the
front side should apply hands to the lower part
of the casing. [If the casing receives an impact,
the unseen side area of the module panel glass
may be broken even though the module itself does not
seem to have been broken. Therefore, support the
frame by hand in order not to drop it.]
2. The least minimum cautions for product disassembly
• Secure a working space, arranged as wide as possible.
• Prior to disassembling the set, protect the acrylic
surface with an air mat or the like.
• To prevent the thread ridges from being damaged,
use an adequate screwdriver.
• Many screws are actually used. Therefore, use
two or three containers where these screws can
be kept . Never disassemble the inner parts of the
module (pipes, etc.).
• When lifting the module from the set, two persons
should stand on both sides of the module to hold
the stable parts of the junction while they lift the
module upright. (If dust or such foreign substance
enters in between the module and the filter, moir*
or similar problems can arise. In addition, once it
enters, it is necessary to take careful measures
not to damage the contamination area while removing
contaminants.) [Please understand that the
replacement of the module may call for an air-blast
treatment (air brush) in a clean room.]
Complementary caution) In particular, if a conductive
foreign matter (such as a metallic chip) is attached
to the flexible cable of the module, there
can be danger of the occurrence of a phenomenon
like wire breakage that is caused by partition
breakdown in the module. For this reason, it
is necessary to bear in mind that the flow of air
blast should be directed only in the predetermined
direction at all times.
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