MX-M364N, MX-565N (serv.man4). Service Manual (Revised January 2016). - Sharp Copying Equipment Service Manual (repair manual). Page 33

MX-M565N  ADJUSTMENTS AND SETTINGS  4 – 3

 

 

This adjustment is needed in the following situations:

* The developing unit has been disassembled.

* When the print image density is low.

* When there is a blur on the print image.

* When there is unevenness in the print image density.

* The toner is excessively dispersed.

NOTE: Be careful not to put fingerprints, oil, grease, or foreign

materials on the roller during the work.

NOTE: Do not hold the adjacent section of the MG roller strongly.

1)

Remove the developing unit from the main unit, and remove
the developing unit upper cover.

NOTE: All DV material must be removed before beginning step 2.

2)

Loosen the developing doctor fixing screw.

3)

Insert a thickness gauge of 0.675mm in between 20mm -
40mm from the edge of the developing doctor.

4)

Push the developing doctor in the arrow direction, and tighten
the fixing screw of the developing doctor. (Perform the similar
procedure for the front frame and the rear frame.)

5)

Check that the doctor gaps at two positions in 20mm - 40mm
from the both sides of the developing doctor are in the range of
0.675   0.025mm.

* When inserting a thickness gauge, be careful not to scratch the

developing doctor and the developing roller.

Note for use of a thickness gauge

* Do not insert the gauge diagonally.

* The gauge must pass freely.

* The advisable point of measurement is the MIN point of the MG

roller oscillation.

 

This adjustment is needed in the following situations:

* The developing unit has been disassembled.

* When the print image density is low.

* When there is a blur on the print image.

* When there is unevenness in the print image density.

* The toner is excessively dispersed.

NOTE: Be careful not to put fingerprints, oil, grease, or foreign

materials on the roller during the work.

1)

Remove the developing doctor cover, and place the develop-
ing unit on a flat surface.

NOTE: All DV material must be removed before beginning step 2.

2)

Attach a piece of string to a sewing needle or pin.

3)

Hold the thread and bring the needle near the developing
roller. (Do not use a paper clip because too heavy. It will not
provide a correct position.)

4)

Mark the developing roller surface on the extension line of the
needle with the needle at 2 - 3mm from the developing roller
surface. (Never touch the needle tip with the developing roller.)

20mm
40mm

20mm
40mm

2～3mm