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Safety Precautions
To prevent accidents during a maintenance procedure, strictly observe the Warnings
and Cautions and never depart from the instructions given in this document. Do not do
anything that is dangerous even if not specifically described in this manual.
In work operations, always take great care to ensure safety in consideration of not only
the precautions described below but also general safety precautions.
Laser Safety
This printer is digital equipment qualified as a Class 1 laser product.
You will not be exposed to the danger of a laser beam as long as you observe strictly
the precautions given in this manual.
Internal Laser Radiation
This printer incorporates a Class 3b laser diode, which emits an invisible laser
beam.
The Print Head Assembly incorporates this laser diode and a polygon mirror.
The Print Head Assembly is not included in the on-the-market maintenance
adjustment items. Therefore, never disassemble or adjust the Print Head Assembly
under any circumstances.
W A R N I N G
Be sure to wear a laser protection goggle that meets the applied
specifications, whenever necessary.
Be sure to turn off the power to the printer beforehand when
you start work around the print head or on the laser beam path
around the Photoconductor Unit or the like.
If you need to keep the power to the printer turned on for
required work operations, take off the watch and finger ring, if
you wear, and wear a proper laser protection goggle.
It is dangerous to put any high-reflectivity tool in the laser
beam path. Especially, pay attention to the handling of tools on
the user site.
For the print head, there is no disassembly or adjustment items
on the user site. If the print head is found defective, replace the
assembly or unit containing the control board with a new one.
That is, do not remove the laser diode in a single unit and do
not make trimmer adjustment of the control board.
Semiconductor Laser Specifications
Laser diode maximum output
15 mw
Maximum average emission power
36.903 µw
(Laser emission opening in the
Print Head)
Wavelength
770 ~ 800 nm
W A R N I N G
Disassembly or adjustment by any procedure other than
prescribed here can result in exposure to an dangerous laser
beam.
Laser emission opening