Konica Minolta BIZHUB 501 Service Manual page 661

3. MECHANICAL ADJUSTMENT
[1]
32
4.
Check to see if LED4 [5] on FSCB turns OFF from
ON. If it is left ON, rotate VR1 [1] slowly clockwise
and stop the rotation of VR1 at the position in
which LED4 turns OFF.
[5]
4521f3c013na
Field Service Ver.1.0 May. 2008