AR-810 (serv.man56). Countermeasure for background CD3 error near toner empty-toner recycle pipe blockage. - Sharp Copying Equipment Technical Bulletin (repair manual). Page 2

ARE581

Sharp Electronics (UK) Ltd., Technical Services Group

Reference (Difference between up to Ver.10 and Ver.11 or above)

Up to Ver.10

Default

Tolerance

Description

455

0

0^2

Adjust the amount of new toner supply to the
Developer unit (the driving time of the new toner
supply motor)
0:Standard 1:1.3 times of the standard 2:0.7times
of the standard

456

0

0^2

Adjust the amount of recycle toner supply to the
Developer unit (the driving time of the recycle
toner supply motor)
0:Standard 1:1.5 times of the standard 2:0.5times
of the standard

Ver. 11 or above

Default

Tolerance

Description

455

0

0^8

Adjust the amount of new toner supply to the
Developer unit (the driving time of the new toner
supply motor)
Increase <-- amount of toner supply --> Decrease
8 

 6 

 7

 4 

 5 

 0 

 1 

 3 

 2

456

0

0^8

Adjust the amount of recycle toner supply to the
Developer unit (the driving time of the recycle toner
supply motor)
Increase <-- amount of toner supply --> Decrease
0 

 2 

 4 

 3 

 5 

 1 

 6 

 7 

 8

For 08-455, 8 is the least supply and 2 is the most supply.
For 08-456, 0 is the least supply and 8 is the most supply.

Additional explanation：

(1) If you experience the background once, replacing the developer in addition to above

countermeasure is more effective.

(2) Performing the periodical cleaning (every 3months or every 100k) as above 1 in addition

to above countermeasure is more effective.

(3) The conventional control 08-455=0 + 08-456=0 is exactly same as the new control 08-

455=0 + 08-456=0.

(No change has been performed.)

Also, the new control that almost implement the conventional control 08-455=1 (1.3 times of
the standard) + 08-456=2 (0.5 times of the standard) is 08-455=2 + 08-456=0.
However, this control is temporary, so that if the problem occurs, set the above value (08-
455=4 + 08-456=1) after cleaning as the permanent measure.