Epson EPL-5800, Service Manual

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EPSON EPL-5800 Revision B
Disassembly and Assembly Overview 66
4.1 Overview
4.1.1 Precaution for Disassembly and Assembly
Read following caution and warning carefully before starting disassembly and assembly.
4.1.1.1 Precaution at Maintenance and Disassembling
4.1.1.2 Precaution at Handling the Laser Mechanism
4.1.1.3 Handling Forbidden
4.1.1.4 Precaution at Handling the Print Board
Handling the print board needs the following precautions.
PRECAUTION AT TRANSPORTING AND KEEPING
W A R N I N G
!
Be sure to plug off the power cable before disassembling.
!
Unless specially mentioned, reverse the disassembling procedure
for assembling procedure.
!
If you need to drive the machine with the cover off, be careful not
to pinch hands or clothes in the operating or rotating parts
(gears, rollers, motors, etc.).
!
Never touch any terminals of electric components or high voltage
components (power supply unit, high voltage unit, etc.).
!
Do not touch the fusing unit right after turning the printer off,
since the unit remains hot for a while after turning the power
OFF. Disassemble after the fusing unit is enough cooled.
!
When inserting or removing connectors, make sure the power
supply is OFF. When electricity is turned on, do not remove any
connectors.
When inserting or removing a connectors, be sure to do so
holding the connector housing.
Never insert or remove connectors holding the wiring cord; it
may result in a loose connection.
!
Use the specified rated fuses.
!
In order to ensure the electric conduction, install the earth wire
and the earth plate correctly and firmly.
After removing the out-teethed washers, make sure to re-install
them. Do not replace them with other kind of screws or washers.
W A R N I N G
!
Be sure to disconnect the power supply when working on the
laser path around the print head or around the OPC drum.
!
Putting the highly reflective tools into the laser path is
dangerous. Be careful to handle these tools especially at the
user’s place.
!
If you cannot turn off the power supply because the service
requires power, remove watches and rings and wear laser
protective goggles.
Use goggles that meet the following specification.
Maximum power: 0.6mW
Output wavelength: 770-810nm
C A U T I O N Never remove, disassemble, nor adjust the following parts.
!
Print head unit
!
Any parts where the installing screws painted red
C A U T I O N
!
For transporting and keeping, keep the printer in the conductive
case or the conductive mat, and do not take off unless necessary.
(Do not use vinyl sack or paper to pack the printer.)
!
Avoid direct sunlight when keeping the printer.
!
Do not put the printer on places easily charged with static
electricity (on a carpet, etc.) or products (plastic, vinyl sack, etc.).