11) Open the feeder cover and remove 3 screws to remove the inner cover [1].
12) Using a ruler [1] as shown in the photo, measure the distance [c] between top [a] of the pre-separation
plate [2] and the original [b]. [A] shows the positions of the pre-separation plate [2] and the original [b] before
the original pickup tray is lifted. [B] shows the positions of the pre-separation plate [2], the original [b], and
the ruler [1] after the original pickup tray is lifted.
13) According to the distance [c], select the type of the arm sensing sheet.
- [c] is from 0 to 1.5mm: Arm Sensing Sheet A [1]
- [c] is from 1.5 to 3mm: Arm Sensing Sheet B [2]
pg. 212