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 3

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2. The addition of the following parts has been carried out as a measure to alleviate a
problem of vibration noise in the waste toner unit. (This action has been carried out for
model AR405 only.)
3.Action:
*2
Japanese domestic production:
(AR405)
From mid-March 1999 production.
(Other models) From the 1st lot of April 1999 production.
Chinese (SOCC) production:
(AR405)
From the 1st lot of April 1999 production.
(Other models) From the 1st lot of May 1999 production.
4. Measure to diminish abnormal noise which occurs in the paper delivery
reversion No. 2 bin unit.
1.Model Name:
AR405/250/286/336
2.General:
There was a loud noise in the paper delivery reversion No. 1 bin unit caused by the gate
coming in contact with the paper guide. As a measure to alleviate this problem, the action
described below has been carried out.
3.Cause:
The noise caused by the contact between the gate and the paper guide was increased due
to the fact that the roller and other parts were no longer present in the paper delivery
reversion No. 2 bin unit.
4.Description:
The attachment of a noise reduction sheet has been carried out to the paper delivery paper
guide.
ARE167
Sharp Electronics (UK) Ltd., Technical Services Group
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