Konica Minolta 7416MFG Advanced Information page 20

Introduction
The laser diode and the scanning polygon mirror are incorporated in the
print head unit.
The print head unit is NOT A FIELD-SERVICEABLE ITEM.
Therefore, the print head unit should not be opened under any
circumstances.
Print Head
There is a laser aperture at the location shown above, which must NEVER
be viewed directly by the user.
7416MFG
Laser Aperture of the Print Head Unit
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