Oki LP-1040 Maintenance Manual page 453

(3) PS5x Roll paper near end detection sensor (PS5x)
Note
The x in PS5x indicates the roll number.
<Removal>
1.
Remove the roll paper drawer
(see p. 9-18).
2.
Remove the one screw as shown in the photo
and remove the scale.
Note
Apply some force to the ROLLER REWIND so
that the screw does not slip when turning.
3.
Pinch the PS5x clamp and remove the PS5x
by pulling down.
4.
Unplug the PS5x connector.
9-166
Scale
ROLLER REWIND
PS5x
Clamp