try turning drum back to front and check toner
try turning drum back to front and check toner
Hi All, might be worth checking air and ozone filters, this is something most techs forget and causes a build up of ozone and heat in machine which will cause adverse copy quality
Thanks for PDF. I did everything what it said to do exept replacing the developing unit, because I don't have one.
1. I have eliminated humidity as a source of problem by turning the enviroment switch on.
2. Returned all of the following to the default settings indicated on the service label in service modeCOPIER>ADJUST>V-CONT>EPOTOFST/VL-OFST/VD-OFST/DE-OFS-P/VD-OFS-P/DE-OFST/VLOFS-P. Set"1"to the following in service mode: COPIER>FUNCTION>DPC>DPC (to force execution ofpotential control). After that LPOWER-P and LPOWER-C both had values of 255. In the instructions it said that if those values exceded 221, that laser scanner unit needs to be refited. I did that and after performing another force execution of potential control, values dropped ( LPOWER-P: 57, LPOWER-C: 48)
After all of that, the image was the same, so I shoul have changed the developing unit, but unfortunatelly I don't have it. I don't think that there is a problem with developing unit, because there is an even coating of toner on it,and when the potential sensor is turned off, the image is very dark, and the whole background is dark.
iz skena se vidi da imas rupa na valjku ako potencijal senzor pogodi na rupu daje pogresno ocitanje
orginal toner
Pozdrav prijatelju, hvala na odgovoru.
Toner je originalan, a što se tiče ovih rupa na valjku, to je već odavno tako, a stroj je uredno radio bez obzira na njih. Pretpostavljam da nešto vjerovatno ne valja oko te regulacije potencijala, jer kad isključim po senzor, i podesim HV-PRI, dobijem kopiju.
Yesterday I've changed the PO sensor, and PO sensor board, but that gave no result. Today i have changed laser scanner unit, but that didn't help as wellk. I've changed those three things first because I had it in stock, I didn't have to order it. Now i am waiting for the HV cable, and HV board. Hopefuly, that would help. If anybody has some kind of advice, I'll be very gratefull.
you did not mention the HARNESS, did you change the harness going from sensor to board?I've changed the PO sensor, and PO sensor board
Hi Lazo7
1, what is the reading on vdt / vdm and vlt / vlm
2, also there is a toner save setting in either level1 or 2 service mode, copier/option/body or user and it is called cotc-d I think, it should be set to 0
HI dudes
It's much better to open new threat,because guys on the forum don't like to comment on 1 year old post.
Cheers.
Practice makes perfect
If it ain't broke, don't fix it
A picture is worth a thousand words
If you want something done right, you have to do it yourself
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