Sharp MXM620N
Adjustment. 2-A Adjust the developing doctor gap
This adjustment is needed in the following situations:
- The developing unit has been disassembled.
- The print density is low.
- The toner is excessively dispersed.
- Remove the developing unit of the machine.
- Remove the developing unit cover and blade cover.
- Loosen the DV doctor fixing screws.
- Manually turn the DV roller to align the marking on the DV roller surface with the DV doctor position.
- Insert a 0.525mm clearance gauge in between the DV roller and DV doctor so that the gauge is positioned at a distance of 40 mm to 70 mm from the DV doctor end face.
- Tighten the DV doctor fixing screws while pressing the DV doctor in the arrow direction. (This should be done for both front and rear frames.)
- On both sides of the DV doctor and at its center, make sure
that the DV doctor gap is 0.525±0.03.
When inserting a clearance gauge, take care not to damage the DV doctor or MG roller
Repeat steps 2 to 6 until the DV doctor gap meets the requirement.