MX-6240N, MX-7040N (serv.man24). Section 5 Adjustments and Settings - Updated November 2012 - Sharp Copying Equipment Service Manual (repair manual). Page 3

MX-7040N  ADJUSTMENTS AND SETTINGS  5 – 3

 

 

This adjustment must be performed in the following cases:

* 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.

1)

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

2)

Loosen the developing doctor fixing screw.

3)

Insert a thickness gauge of 0.775mm in between 40mm -
70mm 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 40mm - 70mm
from the both sides of the developing doctor are in the range of
0.775 

 0.05mm.

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

developing doctor and the developing roller.

70mm

70mm

40mm

40mm

70mm

70mm

40mm

40mm