MPC3501- poor quality colour.

[aabarnes1]

This is only out of the box, 1,220 b/w and 780 colour, and the colour prints/copies are very poor. Done the reg/acc, checked bias etc. Can't get a good even spread of colour. Ideas please??

[teebee1234]

Re: MPC3501- poor quality colour.

Can you post a sample? Are the colors weak (all or one of them) evenly on a skyshot or banding? Do prints and scans look pretty much the same in terms of quality? Print out a color test page from Printer SP1102-3, this is a great tool to determine what pcu is doing what.

[Ollie1981]

Re: MPC3501- poor quality colour.

I'm going to need to see a sample before I can give you any meaningful advice.

Do what teebee said and do 1103-02 in printer sp, this will give you a test chart with colour bars in CYMK running in the main scan and sub scan directions, it will also give you graduated colour bars in CMY, Bk and process black.

If the colours are weak throughout the copy, try forcing toner on the relevent colours to get density up.

If you have deletions down the feed direction, take out the PCU and separate the drum unit from the dev unit and take a look at the state of the dev brush, if it's patchy and/or has obvious deletion areas then it'll need tipping out, vaccing out and re-devving. Had a few issues with dev clumps with the previous MPC2800/3300/4000/5000 causing void areas in copies.

Failing that crash stop the machine mid A3 full colour copy and check the image on the transfer belt and unfused/fused area or the image.

[banginbishop]

Re: MPC3501- poor quality colour.

clean your optics.

run 2111-3 then 2111-1 x2
check 2194-10/11/12 they should all read 1
run 3011 Normal then 3011 Full Music
check 3011 and again they should all be 11111111 - if not refere to the service manual.

Then Run the ACC.

This should set your copy quailty back to spec and then you can trouble shoot if needed e.g. sp 2109/4417 etc.

sounds possibly like the dev has not been set up from install which ive had before on an mpc6000 - that had done 20k before going faint but follow the above procedures. I do this on every call as per the service manual.