Canon imageRUNNER ADVANCE C5051 Series Service Manual page 347

4
Parts Replacement and Cleaning > Laser Exposure System > Removing the Laser Scanner Unit > Preparations
● 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.
ITB pressure release lever
CAUTION:
Before operating the ITB Pressure Release Lever, check that the Right Lower Cover is
open.
4 Parts Replacement and Cleaning > Laser Exposure System > Removing the Laser Scanner Unit > Preparations
Triangle mark
ITB sub pressure
release lever
F-4-89
5) Remove the 2 connectors.
CAUTION:
F-4-88
When pulling out the ITB Unit, be sure not to lower the ITB Pressure Release Lever
below the position where clicky sense is felt. If the ITB Unit is pulled out while the lever
is lowered, the ITB is scraped by the Plate and this may cause to make scratches on
the ITB surface.
ITB pressure
release lever
x2
F-4-90
Click position
Not to lower the ITB Pressure Releace Lever
below the position where clicky sense is felt.
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