Sharp MXM310N

1. Developing doctor gap adjustment

1. Remove the doctor cover.
2. Loosen the developing doctor fixing screw A.
3. Insert a thickness gauge of 1.5mm to the positions of three screws on the developing docter as shown.
   
4. Tighten the developing doctor fixing screw.
5. Check the clearance of the developing doctor. If it is within the specified range, then fix the doctor fixing screw with screw lock.

* When inserting a thickness gauge, be careful not to scratch the developing doctor and the MG roller.

Adjustment specification

Developing doctor gap
F/C/R: 1.5mm +0.1mm -0.15mm

2. MG roller main pole position adjustment

1. Put the developing unit on a flat surface.
2. Tie a needle or pin on a string.
3. Hold the string and bring the needle close to the MG roller horizontally. (Do not use paper clip, which is too heavy to make a correct adjustment.) (Put the developing unit horizontally for this adjustment.)
4. Do not bring the needle into contact with the MG roller, but bring it to a position 2 or 3mm apart from the MG roller. Mark the point on the MG roller which is on the extension line from the needle tip.
5. Measure the distance from the marking position to the top of the doctor plate of the developing unit to insure that it is 9.1mm. If the distance is not within the specified range, loosen the fixing screw A of the main pole adjustment plate, and move the adjustment plate in the arrow direction to adjust.