AR-280 (serv.man140). 1.Change Carried Out In The Assembly Contractor Of The Toner Hopper And Developing Unit. 2.Measure Carried Out To Protect The Main Switch Harness. 3.Measure To Improve The Alignment Performance Of The Waste Toner Transport Gear. 4.Measure To Diminish Abnormal Noise Which Occurs In The Paper Delivery Reversion No.2 Bin Unit. (WHITE) - Sharp Copying Equipment Technical Bulletin (repair manual). Page 2

3.Action:

*1

Japanese domestic production: From the 1st lot of April 1999 production.
Chinese (SOCC) production:

From the 1st lot of May 1999 production.

3. Measure to improve the alignment performance of the waste toner transport

gear.

1.Model Name:

AR280/285/335/405

2.General:

1. There was a possibility of damage occurring to the waste toner transport screw shaft
due to the excessively strong alignment pressure of the waste toner transport gear.
Therefore a change has been carried out in the shape of the waste toner transport gear as
a means of diminishing the alignment pressure of the gear. In accordance with the change
that was carried out in the shape of the gear, a change has also been carried out in the part
code of the main drive unit. It is important to note that the action described above has been
carried out for the model AR405, which is characterized by a high copy speed.
The same change, however, has been carried out in other models which use the same
parts.

ARE167

Sharp Electronics (UK) Ltd., Technical Services Group