MPC2003 white image repeat

[Drivee]

Re: MPC2003 white image repeat

MP C2003 does not have any type of erase lamp.

Every laser/led printer have some device which will erese OPC. Is that lamp, PCR or corona wire does not matters.

[luca72]

Re: MPC2003 white image repeat

Hi,

Customer with an MPC2003 called, complains that on his prints there's a white repeating image on it.
See pictures.
Just a month ago a new PCDU K installed.

Rarely seen this, something with the charge?

thanks in advance [ATTACH=CONFIG]50168[/ATTACH][ATTACH=CONFIG]50169[/ATTACH]

assuming that:
complete pcdu is new
itb its new
fuser replaced

I think about:
- bad discharging lamp
- wrong values in pcdu installation
- problem in the contacts in the machine body (pcdu or itb)
- defective hvt board in black pcdu output patch

... and why not? ... defect in the pressurization mechanism of the pressure roller (on the machine)?

[slimslob]

Re: MPC2003 white image repeat

how is it not there? there is one in each slot of the pcdu, at the bottom right ... but in any case, maybe that is not the problem

If that were true, why are they not listed in the parts catalog or in replacements and adjustments section of the service manual. I checked before I commented.

[anothertech]

Re: MPC2003 white image repeat

how is it not there? there is one in each slot of the pcdu, at the bottom right ... but in any case, maybe that is not the problem

There is a discharge lamp for each PCDU and that could be the problem. Try turning on the discharge lamp on service mode.

[anothertech]

Re: MPC2003 white image repeat

This is a long shot but, could it be that the PCU heater is not working?

MP C2003-32.pdf

[Dan G]

Re: MPC2003 white image repeat

at he end of the PCDU is a cover and inside the cover is a grounding strap- if this cover is forgotten (often ) it will cause similar issues

[luca72]

Re: MPC2003 white image repeat

If that were true, why are they not listed in the parts catalog or in replacements and adjustments section of the service manual. I checked before I commented.

Hi Silm, I also checked before answering you, I remembered that there were, but reading your comment, I got the doubt, (if Slimslob says so !!!). then I looked both in the machines, (I have a couple disassembled in the lab), and also in the parts manual, and they looked, now because I'm at home, if not I would attach the pdf of the page ... try to search the pdf "discharge"however they are at the bottom right of the slot

[Mark Bbb]

Re: MPC2003 white image repeat

looks like a (dis)charge problem to me.
Transfer issue perhaps.

[GIUBOSS]

Re: MPC2003 white image repeat

I had a similar problem with a 2051, maybe it can help you, the problem was on the laser unit, open it and clean the glasses and mirrors of the polygon

[copytrust]

Re: MPC2003 white image repeat

First go into SP modes and make test patern for each colour this way you can check if you have any drum unit problems, if the problem persist on each colour then you go for transfer belt and anything else.



Funny moment with this machine was a newly installed machine after a week i got a call for image repeat and inside the black drum unit on the charge roller there was a squized huge mosquito, how that little f@@@@@ get in there i had no idea.............

[Polarbear]

Re: MPC2003 white image repeat

looks like a (dis)charge problem to me.
Transfer issue perhaps.

I agree, residual image is repeated as residual charge is not removed inbetween images being written.

Was the new pcu detected? Did you set the pcu setting to 1 power off and install and then power on for process control?