MX-M623U, MX-M753U (serv.man7). INSTALLATION MANUAL. - Sharp Copying Equipment Service Manual (repair manual). Page 11

MX-M753N  MX-M623N/M623U/M753N/M753U  1 – 7

6)

While supplying developer to the developer supply port of the
developing unit, turn the MG gear clockwise with a plus screw-
driver to supply all developer to the developing unit.

NOTE: When supplying developer, do not touch the MG roller with

bare hands.

7)

Install the DV cover to the developing unit.

8)

Insert the developing unit to the main unit and fix it with the
blue screw.

9)

Close the process cover and fix it with the blue screw.

1)

Remove the toner cartridge from the box, and shake it several
times horizontally.

NOTE: Be sure to shake the toner cartridge horizontally.

NOTE: Be careful not rotate as shown in the figure below.

2)

Insert the toner cartridge into the main unit insertion port as
shown below. In this case, do not turn the cartridge.

3)

Insert the toner cartridge until it is locked.

Insert the power plug into the power outlet. With the front cabinet
open, turn on the power switch of the main unit.
1)

Enter the SIM 25-2 mode.

2)

Close the front cabinet.

3)

Press [EXECUTE] key to execute the simulation. Toner is
stirred for 3 minutes. The average level of the sensor detection
level is set (stored) as the reference toner density control
value.

1)

Pull out the tray 3 or the tray 4.

2)

Hold and slide the fixing knob (slide system) of the partition
plates A and B to fit with the size of paper to be supplied.

3)

Supply paper into the tray.

4)

Push the tray.

NOTE: Note that a certain special paper cannot be used for tray 4.

To use special paper, use tray 3.

To use tab paper, install the exclusive-use guide tray 3. 
Note that tray 4 cannot be used.
1)

Remove the exclusive-use guide from the storage position left
inside of the machine.