Epson AcuLaser C8500, Service Manual

Page: 9 / 570

Laser Beam
The printer has two interlock switches: the Front Cover Switch R and
the Top Cover Switch. The purpose of these switches is to turn off the
laser beam emission if any of the printer covers have been opened; this
protects the user or service personnel from exposure to the laser beam
from the ROS Assembly.
A laser beam may be emitted during a maintenance operation. Do not
turn on these interlock switches simultaneously under any
circumstances except in a normal operation.
NOTE: The laser beam has a narrower frequency band and more
coherent phases than any other light (sunlight, electric light).
It has excellent monochromaticity and convergence. A thin
laser beam reaches long distances. Because of its
convergence characteristic, the laser beam converges into
one point, causing high density and high temperature. A
laser beam is harmful to the human body.
NOTE: The laser beam in this printer is invisible.
W A R N I N G
„
Do not expose yourself to the laser beam to prevent
injury (blindness).
„
Do not open the cover that has the laser beam
warning label.
„
If you disassemble or assemble the printer, turn off
the power.
„
If you need to work on the printer with power applied,
strictly follow the instructions in this manual.
„
If you have to activate the printer while pressing the
Front Cover Switch R by hand or with a tool, remove
the Top Cover. (Do not turn on these interlock
switches simultaneously under any circumstances
except in a normal operation.)
„
Understand how the laser beam functions and take
maximum precautions not to injure yourself or anyone
around you.