You can adjust the mirror adjustment cam for magenta [C], cyan [B], and yellow [A] with a screwdriver.
This mechanism corrects the main scan skew. The diagram shows the effect on line skew [D] when you turn
the cam in a counterclockwise direction.
For more about this adjustment, (* LD unit).
LDU Shutter
The LD unit has a shutter. As a result, toner and other dust does not fall on the LDU glass. The shutter motor
[A] moves the shutter [B] in the direction of the arrow with the gear [C]. SC270 occurs if the output of the
LDU shutter sensor [D] does not change 1 second after the LDU shutter motor turned on.
Laser Exposure
375
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