Removing The Laser Scanner Unit - Canon imageRUNNER ADVANCE C5255 Series Service Manual

4
Parts Replacement and Cleaning > Laser Exposure System > Removing the Laser Scanner Unit > Preparations

Removing the Laser Scanner Unit

■ Preparations
1) Open the Front Cover, Right Lower Cover and Right Upper Cover.
2) Remove the ITB Cover.
• 2 screws (loosen)
CAUTION:
• Do not touch the ITB surface.
• When installing the ITB Cover, be sure to push it to the left. If the pushing is
insufficient, the plate is not inserted to the slit of the ITB Cover, which may cause the
damage of the sensor.
4 Parts Replacement and Cleaning > Laser Exposure System > Removing the Laser Scanner Unit > Preparations
F-4-97
F-4-98
● Remove the ITB Unit
3) Check that the arrow of ITB Sub Pressure Release Lever is aligned with the triangle mark.
(If it is not aligned, adjust the arrow of lever to the triangle mark.)
Triangle mark
ITB sub pressure
release lever
4) Turn the ITB Pressure Release Lever in the right direction until the protrusion of grip is
aligned with the triangle mark on the plate to release the pressure.
CAUTION:
Before operating the ITB Pressure Release Lever, check that the Right Lower Cover is
open.
ITB pressure release lever
Triangle mark
ITB sub pressure
release lever
F-4-100
4-97
F-4-99
4-97