3051 copy/scan issue

[Dark Helmet]

Howdy folks, got a old 3051, dirty location. Cleaned optics and CCD. Only happens when scanning or copying. Printing is fine. Tried half tone calibration and it can't read the chart.

Bad CCD? I don't have the test charts to calibrate the CCD in 411. Plan to order those up.

image.png

[Lunatech]

Is that when using the DP and the glass?

[Dark Helmet]

Is that when using the DP and the glass?

When using the reversing ADF. Didn't try off the glass. Its not always as bad as the sample. Some times it just has a bunch of dots and a bit distorted but still clear enough to read unlike the sample.

[Ropariva]

Those test charts are expensive. You sure you want to spend that sort of money on a machine that’s gotta be 11-12 years old, right?
Q. What’s the copy like off the glass?
What do the tone curve printouts look like? Two reasons a machine won’t read the charts are dirty optics or poor black solids on the chart. Are you certain the optics are clean? You’ve shone a torch on all mirrors and they are clear and shiny? Sometimes just wiping them with a cloth isn’t enough.
Check the optics codes haven’t been messed with. U61 to u74, especially u63
Check the mirrors aren’t dislodged.
if all that checks out, I’d seriously consider the machine beyond economical repair. We had over 500 of these in the field. Our current count of this model is zero. They are all in copier heaven.

[Dark Helmet]

Those test charts are expensive. You sure you want to spend that sort of money on a machine that’s gotta be 11-12 years old, right?
Q. What’s the copy like off the glass?
What do the tone curve printouts look like? Two reasons a machine won’t read the charts are dirty optics or poor black solids on the chart. Are you certain the optics are clean? You’ve shone a torch on all mirrors and they are clear and shiny? Sometimes just wiping them with a cloth isn’t enough.
Check the optics codes haven’t been messed with. U61 to u74, especially u63
Check the mirrors aren’t dislodged.
if all that checks out, I’d seriously consider the machine beyond economical repair. We had over 500 of these in the field. Our current count of this model is zero. They are all in copier heaven.

Optics were filthy. I blew them off with canned air then used a rag with methyl hydrate to clean them and took a torch to make sure there were no streaks on the mirrors. I hate touching the lens or CCD but i don't have much to loose at that point and used a Q Tip to clean those off. They were actually clean.

Engine prints are totally fine. They can replicate this when scanning so it's all optics.

I want to get a set of charts for the TA3554 machines. Im pretty sure the 52,53,54 series take the same charts. Not sure if the 51 series are the same. I didn't get there yet.

When i was copying status pages i wasn't sure what the fuss was about. They looked ok. Maybe slightly bold. It wasn't until they printed the document in the samples above with half tones and then copied it showed how bad it can get. Attached sample is the worst one. The others are not that bad, some you would have to look hard to see something wrong.

Ive already notified them we have next to no parts for these machines. If i can fix this with a calibration chart that can be used on new machines ill give that a go. If it needs a CCD or a ISS board that the book is talking about. They are SOL.

[Ropariva]

I’m pretty sure the charts haven’t changed. Maybe a dealer close by could loan you one? Otherwise it’s handy to have for the new generation. I occasionally get a machine that scans with a blue hue and use the chart to correct it.

[KYO_OEM]

I do not think that your problem is coming from dirty ccd.
If system can`t read U410 chart, it also can`t read U411 chart (same as 52/53/54 series)
Looks like data failure from image processing.
CCD >> ISC PWB >> Main PWB
Did you checked/ reconnected the wirings between ccd and ISC pwb?
Same for ISC pwb <--> main pwb?
Did you reconnected both memory moduls on main pwb? (i do not remember which one for image memory and which one for firmware)
Did you disconnect the DP? (maybe it breaks down ISC pwb voltages)

[blackcat4866]

It might be the ISCPWB. On my machine the color table data for the CCD became corrupt. You might try the calibration sheets first, but I was not able to get a useable calibration until I replaced the ISC.

https://www.copytechnet.com/forum/technical-forums/copier-technical-discussion/kyocera-utax-copystar/149764-kyocera-3551ci-scan-quality-issue?p=1124374#post1124374

[blackcat4866]

Here's the original post:

https://www.copytechnet.com/forum/technical-forums/copier-technical-discussion/kyocera-utax-copystar/90805-wanna-see-some-cool-copies?t=92588

[Dark Helmet]

I ordered the expensive test chart, i wanted one here anyways. It works on the 54 series so it's worth having. Our parent branch has the other charts and are going to send them over to me to try.

I think you are right about it being the ISC board. I feel if the CCD failed it would be more constant. This is all over the place. Some copies are pretty much fine if you don't scrutinize them. If the charts can't correct the corruption in the board, they are SOL. We don't have parts. In Canada the 51 series are dead to us 😅

Below are the charts the book says to use in U411
image.png

[KYO_OEM]

i use chart 1 only, instead of chart 2-2 i use DP Auto Adj after standard drawer would set by U034.