MP C2551 SC 400

[copier tech]

Re: MP C2551 SC 400

Yes list what you have changed & work done so far & if the any parts replaced were new.

Have you updated/checked ALL the fw levels?

However if one of my engineers replaced a control panel for SC400 i'll pull them out for training!

[BLADE]

Re: MP C2551 SC 400

Haven't got as far as slashing my wrists yet.....but its getting close.

Readings for 3325 is 121 which tells me I have a Vsg issue. Probably induced by me swapping ID sensor boards around. Shall investigate further.

And just for fun I swapped the ops panel, more in desperation then a logical fault finding step. Still no joy.

Printer test pattern and copy of test chart attached that proves there is no problem with image creation so why the bloody hell won't it develop the music bars!!

I,d guess there is a density error issue on the middle sensor , then shuts down before doing music. Three fails would indicate something sus, one fail is usually a normal service type fault (guessing tho). Have you cleaned the laser path or replaced the belt yet

I can understand why you swapped the op panel, after all, that's the naughty bit with the error on it ( lol pure gold)

[Iowatech]

Re: MP C2551 SC 400

[ATTACH=CONFIG]35493[/ATTACH]

OK, lets try again and hopefully this time I managed to attach the attachment. It hasn't been a good week.

So they did attach the first time......buggered if I know whats going on.

First of all, full disclosure: the computer I am using was the cheapest one available at Wal-Mart four years ago and this may entirely be an issue with it.
However, the KYM areas on that test print are not nearly as dense as I'd prefer, especially the black. The cyan is better, but I'd kind of like that to be more dense too. Perhaps a forced toner add (SP3015) may be something to try as a test.
Also, there are lines on the test print that would seem to indicate the cyan and magenta drum units are worn. However, there are lines on the four color square between the RGB and the CYM patterns that defy explanation by me (hopefully someone smarter than me knows what those are).
Still, because of all this it does appear that the drum and developer units in that machine are in questionable shape.

[Slakkie4x2]

Re: MP C2551 SC 400

Hi,

Try changing the following sp modes :
SP3324 - 005 +5.00
006 +1.00

[slimslob]

Re: MP C2551 SC 400

Haven't got as far as slashing my wrists yet.....but its getting close.

Readings for 3325 is 121 which tells me I have a Vsg issue. Probably induced by me swapping ID sensor boards around. Shall investigate further.

And just for fun I swapped the ops panel, more in desperation then a logical fault finding step. Still no joy.

Printer test pattern and copy of test chart attached that proves there is no problem with image creation so why the bloody hell won't it develop the music bars!!

First of all, full disclosure: the computer I am using was the cheapest one available at Wal-Mart four years ago and this may entirely be an issue with it.
However, the KYM areas on that test print are not nearly as dense as I'd prefer, especially the black. The cyan is better, but I'd kind of like that to be more dense too. Perhaps a forced toner add (SP3015) may be something to try as a test.
Also, there are lines on the test print that would seem to indicate the cyan and magenta drum units are worn. However, there are lines on the four color square between the RGB and the CYM patterns that defy explanation by me (hopefully someone smarter than me knows what those are).
Still, because of all this it does appear that the drum and developer units in that machine are in questionable shape.

Not only are t he densities low, the line position is off. If you look at the RBG portions you will notice that the colors are not quite centered in the black lines. Also the color squares in the corners do not align.

[Lagonda]

Re: MP C2551 SC 400

So you want the full story? Well sit down and make yourself comfortable ……….

Once upon a time in a land far, far away there was a refurbished MP C2551 that lived a quiet life in a children’s day care centre until one day it suddenly shut down with a SC 400 code and wouldn’t tell anyone why it had suddenly got upset. (a bit like Mrs Lagonda) Then Technician No 1 arrived and consulted his manual and said “I know what that problem is, I’ve fixed it before” and ordered in an ID sensor board, a new transfer belt and a transfer belt cleaning station.

That night the tech did something very silly, he went to a gym. While he was at the gym he thought he’d make a complete fool of himself and leapt around pretending he was Bruce Lee and tried My Thigh boxing. He fell over and badly broke his finger. What a silly technician!!

The next morning Technician No 2 arrives on site with the parts and while muttering under his breath about having to do other techs jobs, fits the parts. And when the copier still refused to work he panicked and tried to fix non-existent problems with wiring looms. (The last thing the manual lists for fixing SC 400 is replace the wiring loom.)
The job then gets pushed up the line to me. I headed out to site going via the warehouse to rat a heap of boards out of a trade-in copier that was about to take a one-way trip to the recyclers.

After checking over the work of the previous techs and finding no obvious issues I changed the IPU board but still got SC 400. I then spent some time checking that the ID sensor positioning mechanism worked properly. It did. (Ricoh have never really got the hang of gravity, they just don’t realise that loose toner mostly falls down, not up. If only they put sensors on top instead of underneath they would have a lot less problems.)

By this time the customer is starting to get a bit stroppy so I organise for loan copier and get the recalcitrant machine taken back to my black hole of a workshop.
I then start swapping the boards one by one. BCU, Controller, NVRAM, EPROM and HDD. Still no-go. At this point I realised that the MUSIC bars weren’t appearing on the IT belt so force fed toner into the PCDU’s then swapped the entire set of PCDU’s for a known working set. Still no change. Also swapped entire ITB assembly.

Frimwar was also updated.

Something in the back of my mind left over from the MP C4500 training course many years ago said that some of the test patterns were generated in the SBU so I swapped that. Nope, still nothing.

Then swapped the Ops panel, I know it wasn’t logical fault finding but I just happened to have a new one on the shelf right next to the copier. I thought “Why not, I just might get lucky!”
I didn’t.

After consultation with Ricoh Tech Support one of the guru’s pointed out that there was a big discrepancy between the page count on the K PCU and the rotation percentage count. One said it was well over its life and the other said it had only done 29% of its life. Since the entire PCDU set had only been fitted not too many months ago when the copier had been refurbed it seemed that its little brain had got rather scrambled and the decision was taken to do a full reset. And that is something that I don’t do lightly.

And that boys and girls is the sad tale of the MP C2551 that has been hanging around my workshop like a bad smell for over a week now.

My next line of enquiry is to follow Blades suggestion that the ID sensor isn’t getting a good read off the belt to start with and is shutting down with the SC code before it even gets to the stage of developing the MUSIC patterns. Anyone remember what the acronym stands for?

[Lagonda]

Re: MP C2551 SC 400

Not only are t he densities low, the line position is off. If you look at the RBG portions you will notice that the colors are not quite centered in the black lines. Also the color squares in the corners do not align.

All noted guys, C/Q isn't great cos I hit SP5801 and cleared the memory out. Registration is out as I can't run auto adjust as it wont put the music bars on the ITB. Same goes for the ACC.

[BLADE]

Re: MP C2551 SC 400

cool story, I enjoyed the bruce lee bit and the resentful tech no.2 struck a familiar chord also

[Lagonda]

[Mark Bbb]

Re: MP C2551 SC 400

Reads like a story in the newspaper...
Because this connector is not very easy to access I was thinking at a problem with the harness (or connector) between the id sens board and ...
Seems that tech 2 has replaced this harness too, so his thinking wasn't so bad after all?

[copier tech]

Re: MP C2551 SC 400


lol as per my first suggestion

[LANUN_81]

Re: MP C2551 SC 400

hai guys,i had this problem before.exchange the laser unit....cheers