I have a sharp AL-800 and the copies are light. I cleaned the optics and replaced the toner DV unit. Much better, but still very light on auto exp. Machine located in dusty environment
Comments:
May 11, 2009
- no coronas to be found- this is a digital, has a transfer roller that I have cleaned, the main ch. must be in the drum unit. I cleaned the scanner slitglass and the **** opening above the drum. I also adj. the exposure by holding the auto exp. key until it blinked, then adj. to the darkest set. It is much better, and a skyshot is good and black. It still could be better though-
Check the machine for a **** or dust glass above the drum.
Check and clean coronas, the wires and shells may be dirty reducing charge.
Run a few white copies, to check of the toner / carrier ratio is low.
Hope this is of some help.
Ed
Comments:
May 11, 2009
- I would look into the charge corona, and if it is constantly adding toner, As I mentioned on my last post, it could be a lack of toner, test the machine door open and watch the machine, if it is depleted it will add toner on every copy.
Running white copies and having the quality improve will detect this.
Ed
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