MX5070N CQ issues when copying in color

[bilyahn]

Have an MX5070N that is not reproducing black text properly when in color mode fron the platen and through the document feeder. Single sided is worse than 2sided but they are both poor. Unit has a DSK.

So far we have replaced:

MFPC PWB Unit
CCD
Lamp and lamp PWB

Updated ROMs
Performed numerous 63-2, 63-5 adjustments. Also tried to adjust in sim 46 to no affect. This also affects scan quality. The only way to get a decent copy is by placing unit in TEXT/PHOTO mode. All other modes and the copies are washed out. Here are a couple of scanned images for you. 1 monochrome which is okay and one color where you will see the black text is missing. Sharp has our next option of using a SIT chart but that is something that we do not have in stock and my boss is leery of spending the money for one without so backup information.

Thank you for your time and effort in this matter. Any suggestions would be very much appreciated.

Bil

Having issues uploading images. I will keep trying

[driving lots of miles]

Re: MX5070N CQ issues when copying in color

I am assuming paper is good, not damp
have you tried another transfer belt?
swapped fuser?
might try new black developer

[spanky]

Re: MX5070N CQ issues when copying in color

If you run a sky shot is it solid blacks?

[blackcat4866]

Re: MX5070N CQ issues when copying in color

Where are those attachments? =^..^=

[bilyahn]

Re: MX5070N CQ issues when copying in color

I am assuming paper is good, not damp
have you tried another transfer belt?
swapped fuser?
might try new black developer

Sorry, forgot to mention internal prints are perfect. No issues with the print engine itself. Replaced black DV and drum just to try covering all of our bases but didn't think that had anything to do with the problem. No affect after replacement.

[bilyahn]

Re: MX5070N CQ issues when copying in color

Where are those attachments? =^..^=

I'm not sure what the problem is. Tried several different browsers on 2 computers and it still will not upload the pdf. Tried changing the name still no joy.

Talked to Sharp again yesterday and they want us to do the SIT chart. Price has come down quite a bit from what it was a few years ago, only $85 now LOL

[bilyahn]

Re: MX5070N CQ issues when copying in color

If you run a sky shot is it solid blacks?

Didn't run a sky shot, will have to try it to see what the difference is between mono and color.

[mansart]

Re: MX5070N CQ issues when copying in color

Because internal prints look fine, I'm also assuming print jobs are fine.

Also you see improvement when changing exposure type.

I'm not a betting man, but if I were I would put money on the horse named SIT Chart

I think you are on track..... good luck

[mojorolla]

Re: MX5070N CQ issues when copying in color

Run LSU power adjustments...SIM 61 I think....
Could also try Black Letter/Line Width Adj under system settings > image quality adj.

[blackcat4866]

Re: MX5070N CQ issues when copying in color

Are your attachments more that 1MB? I had to reduce the resolution of my phone camera to get a small enough attachment size. =^..^=

[bilyahn]

Re: MX5070N CQ issues when copying in color

Are your attachments more that 1MB? I had to reduce the resolution of my phone camera to get a small enough attachment size. =^..^=

The initial one was 2Mb. I split them up so will have to see what the sizes are but pretty sure the mono one is less than 1Mb. We ordered the SIT chart so will see.

[bilyahn]

Re: MX5070N CQ issues when copying in color

Run LSU power adjustments...SIM 61 I think....
Could also try Black Letter/Line Width Adj under system settings > image quality adj.

I thought about the line width adj but didn't mess with it. An option if the SIT chart doesn't work. Didn't try the LSU power since mono looks good but will give that a try. I'm willing to try anything at this point LOL

[MoochPage]

Re: MX5070N CQ issues when copying in color

Not sure if this is on the right track but we had a MX-M565N that internal prints would look fine but the copieswould look terrible also wouldn't calibrate when trying sim 46-74 It ended up being the SD card which your machine doesn't have but it does have the msata unless I'm mistaken.

[bilyahn]

Re: MX5070N CQ issues when copying in color

Not sure if this is on the right track but we had a MX-M565N that internal prints would look fine but the copieswould look terrible also wouldn't calibrate when trying sim 46-74 It ended up being the SD card which your machine doesn't have but it does have the msata unless I'm mistaken.

That would be one of the things I would try if the SIT chart doesn't work. Keeping my fingers crossed on that one LOL

[bilyahn]

Re: MX5070N CQ issues when copying in color

Guess I was spelling CIT chart wrong. LOL Anyway it didn't work got an error message that the data sample was faulty both on the platen glass and through the DF with a list of number that were identical for both. Sharp asked if the chart was damaged but it looked good right out of the packaging. Waiting on Sharp tech rep to call with suggestions. Wondering if we could of gotten a faulty MFP board and we're just going around in circles. I will try the mSATA for nothing else comes to mind will be talking with Smile service manager today maybe he has something.