MP C3500 Streaking mystery

[blackcat4866]

......"This was a stack of about 100 pages and only two were affected, the other not attached had far less streaking on it and they were not adjacent to each other."

Are you saying you fed 1 original, copied it 100 times and only a few copies had the problem? Or a stack of 100 originals each copied once?

Yes. The big question now is, if you are doing multiple copies of one original do all of the copies of the same page have the identical flaw, or do only a few, or does the flaw change on copies of the same page?

Digital copiers scan each page only once regardless of the number of prints, so theoretically all prints of the same original should have the same identical flaw. A flickering scan lamp can do just that. =^..^=

[brad_jk]

I'm feeding a stack of about 100 different originals printed from my computer to the 3500 and had no streaking. However when copying these 100 originals the streaking occurs.

Theoretically I could scan one original and copy it 10 times, if the fault shows up on all 10 with the exact same pattern then it would indicate a scanning issue.

***Just asked someone to try the above test and they already had copied 100+ of one page and it did streak on all & exactly the same. otherwise it is still very random in frequency and pattern when copying multiple originals. This at least narrows it down to the fault occuring during the scanning process. Right?

[andy1mack]

I have seen this problem on an MP C4500. Found out our technicians are replacing PCU's but not developer. This problem had me sort of scratching my head, but after developer change on all units (in your case black) all our CQ problems went away and they haven't called in a month for this same issue. Don't know!!! Keepin' it simple.

[blackcat4866]

I'm feeding a stack of about 100 different originals printed from my computer to the 3500 and had no streaking. However when copying these 100 originals the streaking occurs.

Theoretically I could scan one original and copy it 10 times, if the fault shows up on all 10 with the exact same pattern then it would indicate a scanning issue.

***Just asked someone to try the above test and they already had copied 100+ of one page and it did streak on all & exactly the same. otherwise it is still very random in frequency and pattern when copying multiple originals. This at least narrows it down to the fault occuring during the scanning process. Right?

Yes, it's definitely a scanning issue, most likely the exposure lamp or lamp inverter PWB. =^..^=

[ferastec]

Hi guys, try to change the memory (2 NOS), i had same problem but white lines instant of black, also you could try to clean the connecters of the controller board as well as scanner board.
you should aslo keep the firmware up to the date.

Regards

[JustManuals]

This Parts & Service manual can now be purchased for $11.77 and downloaded immediately after payment from:

Copier-Printers-Fax-Scanners-Duplicators - products new home - Ricoh [B222,B224] Aficio MP-C3500,MP-C4500 Parts & Service

Paul@justmanuals.com

[tcs04]

This Parts & Service manual can now be purchased for $11.77 and downloaded immediately after payment from:

Copier-Printers-Fax-Scanners-Duplicators - products new home - Ricoh [B222,B224] Aficio MP-C3500,MP-C4500 Parts & Service

Paul@justmanuals.com

Don't advertise here!! Read the forum rules..

[E Winter]

This doesn't really look like a scanner issue to me - maybe the print volume is very low that the issue hasn't occured by coincidence. I'd try to scan different stuff with different settings into a computer and check the results. Personally I'd take a closer look at the black PCU and swap the charge roller with a different color PCU - that'll be done easily.


If you're shure it's a scanner issue:

1. try pulling the front/left edge of the scanner housing with some force towards top
2. re-install the df and don't use the elongated screw (basic skew correction) hole up to the max.

[Herrmann]

sry, but he said already, that the printing is ok, so, all units, all of the printing engine at all must be ok, it must be a scanner problem

[E Winter]

sry, but he said already, that the printing is ok, so, all units, all of the printing engine at all must be ok, it must be a scanner problem

You're right - I've overlooked this post:

I'm feeding a stack of about 100 different originals printed from my computer to the 3500 and had no streaking. However when copying these 100 originals the streaking occurs.

Theoretically I could scan one original and copy it 10 times, if the fault shows up on all 10 with the exact same pattern then it would indicate a scanning issue.

***Just asked someone to try the above test and they already had copied 100+ of one page and it did streak on all & exactly the same. otherwise it is still very random in frequency and pattern when copying multiple originals. This at least narrows it down to the fault occuring during the scanning process. Right?

In this case there's indeed no doubt that this is a scanner related issue. I know that a workmate did resoldered an inverter pwb once but I can't recall the initial issue. I guess it would be handy to gain access to another MPC3500 to borrow some scanner components - should be handy to isolate the problem step by step.

[Joel]

i would agree to all of the tech here that it is a scanner issue here. check connectors and grounding of the machine. loose connection may result to this problem.

[katash]

hi guyz,in this part of the world mostly insects find there way into the lens block assy[ccd area]try to remove and blow it.

[TonerMunkeh]

Possibly a bent scanner frame? Has anyone been having a "water cooler" chat and leaned on it?

[tcs04]

Possibly a bent scanner frame? Has anyone been having a "water cooler" chat and leaned on it?

AHH! the old AF1045 prob! Normally only gives a problem using the ADF.

[Vulkor]

AHH! the old AF1045 prob! Normally only gives a problem using the ADF.

Not just a problem with that model. The new Savin 816 and 917 also easy broken that way. Except no fix for it. Once plastic support arm is broken by leaning on it or improper picking up of machine its toast as the entire scanner assembly and box gets bent. We have two in our shop collecting dust now.