Overview; Precaution For Disassembly And Assembly - Epson EPL-5700 Service Manual

EPL-5700

4.1 OVERVIEW

This Chapter shows procedure for disassembly and assembly.

4.1.1 Precaution for Disassembly and Assembly

Read following caution and warning carefully before starting disassembly
and assembly.
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WARNING
Make sure to plug off the power cable before
starting.
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Do not touch the fusing unit right after turning
the printer off, since the unit remains hot for a
while after the printer stops printing.
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If it is necessary to plug in the power cord and
operate the printer after removing the cover,
keep your hands and clothing well away from
operating or rotating parts, such as rollers, fan
motors, etc.
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Never touch electric terminals or high-voltage
components such as the charger and the high
voltage unit.
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If it is necessary to plug in or off connectors, do
so after making sure that the power is turned
off. Do not plug in or off any kind of connectors
when the printer is on. Also, when plugging in or
off the connector, do so holding the connector
housing. Do not plug in or off the distribution
code. Doing so may cause imperfect contact.
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Read following warnings when handling the
laser mechanism.
Make sure to plug off the power cable when
handling the print head unit and laser-related
parts around OPC drum.
It is dangerous to insert the tools which have
high possible reflection rate, into the laser path.
Especially handle those tools carefully at the
users' places.
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WARNING
If you can not turn off the power because your
service requires power, take off rings and
watches, and wear laser protective goggles.
When you using the protective goggles, use the
one which meets following specifications.
Maximum. Power:
Output wave-length:
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CAUTION
In order to guarantee electric continuity, install
earth line and earth plate correctly. Also, after
removing the out-teethed washers, make sure to
re-install them. Do not replace them with other
kind of screws or washers.
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Do not disassemble the toner cartridge and OPC
drum unit.
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Do not disassemble the print head unit (optics
unit).
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To prevent damage to ICs from static electricity,
do not touch the ICs on the circuit board or the
terminals of peripheral electrical components
with you bare hands. (If necessary, use the earth
band)
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Use only the recommended tools to ensure safe
and efficient maintenance work.
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When transporting the printer, pack it using the
original packing material.
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Handling the OPC drum:
OPC drum is very sensitive to light and it takes
some time to recover from light exposure.
Therefore, do not open the protection cover and
expose the OPC drum to light for long time.
Do not let finger prints, grease and chemicals to
attach on the OPC drum surface.
Do not damage the OPC drum surface.
Other precautions such as CHECKPOINT or ADJUSTMENT are mentioned
at each procedure.
Chapter4 Disassembly and Assembly
5mW
780-810nm
4-1