IR 5050 image problem

[cobra]

I am servicing a Canon IR 5050. The copy output looks like the attached file. I'm suspecting a developer problem but on initial check it looks ok. Have you encountered image problems like this? And what could be the causing it. Thanks for your help.

sample copy.pdf

[Canon.Tech]

Re: IR 5050 image problem



But I would check, clean & rewire the primary & transfer coronas, might be one of them arching.

If you have time maybe remove & clean the drum.

What count does the machine show?

[cobra]

Re: IR 5050 image problem

But I would check, clean & rewire the primary & transfer coronas, might be one of them arching.

If you have time maybe remove & clean the drum.

What count does the machine show?

Thanks for the inputs i'll check primary and transfer chargers. Machine's total counter is 200,000.

[Canon.Tech]

Re: IR 5050 image problem

That's a low count for that model, you won't need to clean the drum.

Is it being used with Genuine Canon toner?

[zoraldinho]

Re: IR 5050 image problem

Look like developer cylinder faulty.

To add..Technicians; Please post PG-test and not copy samples!

[copyprint]

Re: IR 5050 image problem

I am servicing a Canon IR 5050. The copy output looks like the attached file. I'm suspecting a developer problem but on initial check it looks ok. Have you encountered image problems like this? And what could be the causing it. Thanks for your help.

[ATTACH]17768[/ATTACH]

just wipe your mg roller with dump cloth while rotating several times then do a test

[cobra]

Re: IR 5050 image problem

Look like developer cylinder faulty.

To add..Technicians; Please post PG-test and not copy samples!

I have attached 5 output of PG-test #5. checked and clean developing unit, primary and transfer chargers. Should I consider replacement of developing unit?


sample PG- #5 test output.pdf

[cobra]

Re: IR 5050 image problem

That's a low count for that model, you won't need to clean the drum.

Is it being used with Genuine Canon toner?

Yes they are using genuine canon toner. Checked and clean the primary and transfer charger and the developing unit. Still the same problem. Should I replace the developing assembly?

[teckat]

Re: IR 5050 image problem

yes

[COPIERTEC ASSOCIATES]

Re: IR 5050 image problem

From the look at your sample PG,we need to observe the following;
1.If the problem is consistent,check on the spacers of the dev unit and the supportive bearings.
2.If the problem is intermittent,check on the charger blocks and possible dry joints on the HVT.
The HVT could be sending more current hence a sparking of the corona wires.

[MK.]

Re: IR 5050 image problem

It seems the problem of mechanical drive to developing unit.Pls check that also.

[tongee]

Re: IR 5050 image problem

I am servicing a Canon IR 5050. The copy output looks like the attached file. I'm suspecting a developer problem but on initial check it looks ok. Have you encountered image problems like this? And what could be the causing it. Thanks for your help.

[ATTACH]17768[/ATTACH]

Replacement FH2-9246-020 CONNECTOR, HIGH-VOLTAGE

[cobra]

Re: IR 5050 image problem

Just to update. I had replaced the developing assembly and the trouble was fixed. But unfortunately the trouble returned again after 1 month. Is there something else I need to check besides the developer? Is there an adjustment when you install a new developing assembly? I really need your inputs as I'm going blank on this. Thanks

[zoraldinho]

Re: IR 5050 image problem

Definitely- when you install new developer:COPIER > FUNCTION > INSTALL>TONER-S hit OK

[COPIERTEC ASSOCIATES]

Re: IR 5050 image problem

Like i said before, check on the HVT and replace the corona wires on both
the main charger and the transfer corona assemblies.
Also try to switch off and On the drum potential by going to service mode
and perform this;COPIER>OPTION>BODY>PO.If the drum potential PO is
reading 0(zero),change to1(one) and make test copies and vice-versa.
Good luck.