Sharp Ar5132

[Copier Systems]

:confused: Went to service copier that had a copy quality issue-contract-call.First problem was light copies dev had 60k changed dev it calibrated at 72did44-2-was210 44-3-210 did not run sim-20.Now i thank i have adrum ground problem.dev is going into waste bottle,drum is semi-coated-bands
Sky-shots were black but turned grey because most of the developer is in the t-waste bottle.1.how do ifind out what is grounding,2. Copier will not run with charge unit out. diffrent c-unit-did not help all connectors were put back N-lamps are on copies are worse than before. any help would be app.Ionly have 5-7of these left in the field. That5132-25 was on tem-per-mental sob.it makes a good training machine. Help help I have service manual but it is usless on this problem.Had sim problem 7-8yrs ago but i ca
nt remember the way to my office sometimes too much toner.ANDY H>

Thank All for the help on that x-doc-ctre425 Have it running like a sharp

[Duke]

Check the ground connections especially at the back of the drum unit, I have had oxidation problems with the ground connections. I emery cloth sand them and then apply a coat of chemtronics contact restore to protect from oxidation.....Duke

[Copier Systems]

TO;Duke
From AndyH.
What grounds are you refering to?I can see grounds on back of copier whare process-unit an charge assembly connect.Are there other areas
that of concern.
Thanks AndyH.

[jclausen]

The drum is grounded threw the large round pin sticking through the rear frame. It lines up with the hole in the center of the drum.

JC