MX-M623U, MX-M753U (serv.man10). COMPLETE SERVICE MANUAL - Sharp Copying Equipment Service Manual (repair manual). Page 117

MX-M753N  SIMULATION  6 – 21

 

24-30

Data clear

Function (Purpose) Used to initialize the administrator pass-

word.

Operation/Procedure
1)

Press [EXECUTE] key.

2)

Press [YES] key.
The administrator password is initialized.

If the administrator password of system setting and Web page is
forgotten, execute this simulation to set the password to "admin"
(default).

 

24-31

Data clear

Function (Purpose) Used to initialize the service mode (Web

page) password.

Operation/Procedure
1)

Press [EXECUTE] key.

2)

Press [YES] key.
The service mode password is initialized.

If the password of Web page is forgotten, execute this simulation to
set the password to "service" (default).

 

 

25-1

Operation test/check

Function (Purpose) Used to check the operations of the devel-

oping section, and to display the toner den-
sity detection level.

Process (Developing section)

Operation/Procedure
1)

Select the process speed with the touch panel key.

2)

Press [EXECUTE] key.
The developing motor and the OPC drum motor rotate for 3
minutes and the output level of the toner density sensor is dis-
played.

 

25-2

Setting

Function (Purpose) Used to make the initial setting of toner

density when replacing developer. (Auto-
matic adjustment)

Process (Photoconductor/Developing/
Transfer/Cleaning)

Operation/Procedure
1)

Press [EXECUTE] key.

The developing motor rotates for 3 minutes, and the toner density
sensor makes sampling of the toner density. The detected level is
displayed.
After stopping the developing motor, the average value of the toner
density sampling results is set as the reference toner density con-
trol level.

NOTE: When the above operation is interrupted on the way, the

reference toner concentration level is not set. Also when
error code of EE-EC, EE-EL or EE-EU is displayed, the ref-
erence toner density level is not set normally.

Do not execute this simulation unless new Developer material has
been installed. If it is executed in other cases, under toner or over-
tone may occur, causing a trouble.

 

 

26-2

Setting

Function (Purpose) Used to set the paper type and the weight

type.

Paper feed

Operation/Procedure
Select a paper size to be changed with the touch panel.

LOW

Process speed: Low speed

MIDDLE

Process speed: Medium speed

TCS

Toner density detection level

TCV_K

Toner density sensor output voltage level

AUTO DV(L)

Toner density adjustment value at the low speed

AUTO DV(M)

Toner density adjustment value at the middle speed

AUTO DV VO(L)

Toner density sensor control voltage level at the low 
speed

AUTO DV VO(M)

Toner density sensor control voltage level at the 
middle speed

TCS

Toner density sensor detection level

TCV

Toner density sensor control voltage level

EE-EL

EL abnormality

Sensor output level less than 26, or 
sensor control voltage level over 197

EE-EU

EU abnormality

Sensor output level over 200, or sensor 
control voltage level less than 49

EE-EC

EC abnormality

The sampling level in the automatic 
toner density adjustment is outside of 
108 

 5.

TRAY2

0

8.5 x 11

1

A4

2

B5

A4 LCC

0

8.5 x 11

1

A4

2

B5

G/LBS SET

0

GRAM

1

LBS