[Error Code] C552 with C-2557 & C-2551 Error Codes, help!

[copier tech]

Hi all,

Need help with this one please, been to look at a C552 with c-2557 (K toner dens low) I fitted a new K IU & toner as per the manual but no change. In service mode looked the K toner density level it was around 3%, Magenta & Yellow were at around 7%, Cyan was also low at around 4%.

So I manually added black toner (taking some out of the toner bottle & pouring it into the K dev unit, not ideal I know) to bring up the density level & this worked, K density went to around 7-8% however now the machine threw a C-2551 error, Cyan density low, so I did the same manually added Cyan toner, now all the levels are around 7% & the machine is working fine, however on a 100 full colour run all the levels drop & down & don't seem to go back up, even if I run manual toner add in service mode!

What should the toner density levels show, around 5%???

Manual says possible faulty PRCB, anyone seen this before????

[laitang]

Re: C552 with C-2557 & C-2551 Error Codes, help!

Do check toner suply motor/K and toner cartridge motor C/K ?

[copier tech]

Re: C552 with C-2557 & C-2551 Error Codes, help!

How can I check them? I wouldn't expect both motors to fail at the same time.

[xscotty1990]

Re: C552 with C-2557 & C-2551 Error Codes, help!

Hello,

i would also take a look at the toner supply Motor for BK/C. As i remind there is only one Motor for both Colors (C,BK) and two clutches ,one for Cyan one and black Toner.

So you can Change the Motor from the Magenta and Yellow Toner Supply with the mtor for Cyan and black.

[copier tech]

Re: C552 with C-2557 & C-2551 Error Codes, help!

Thanks, the service manual shows there are 4 motors (one for each colour) but the parts manual only lists this one section, are the 4 toner supply units identical?

c552 toner supply.jpg

[xscotty1990]

Re: C552 with C-2557 & C-2551 Error Codes, help!

Exactly,


but the " bottledrivesection " has only two Motors.

Dont know if the Toner Supply Assys all identical but you can Change the whole Supply Assy very fast.

Greetings

Scotty

[Synaux]

[copier tech]

Re: C552 with C-2557 & C-2551 Error Codes, help!

The machine is in a very good environment.

I do remember shaking the cyan toner bottle & could hear a slight rattle, i'm now wondering if some hard toner has go into the cyan bottle drive unit & either blocked or damaged the motor, but don't understand why the m/c throws the C2257 K toner dens low error first.

[copier tech]

Re: C552 with C-2557 & C-2551 Error Codes, help!

I have got this machine up & running now, I swapped the complete hopper ass'y (all for colours) & the PRCB from an working C552, when I powered up the machine I could hear the K toner motor run & I watched the K toner % reading go back to normal.

I ordered a new PRCB for the machine I took it from but it was different, it had some connections missing! see pictures below.

I ordered A2WUH00101 (got from the parts manual)

But the part number on the failed board was A0P0H00100

Both parts number are definitely correct & both for the C552, but why does one not fit! Aggghh??

1.jpg3.jpg4.jpg

[CompyTech]

Re: C552 with C-2557 & C-2551 Error Codes, help!

I have got this machine up & running now, I swapped the complete hopper ass'y (all for colours) & the PRCB from an working C552, when I powered up the machine I could hear the K toner motor run & I watched the K toner % reading go back to normal.

I ordered a new PRCB for the machine I took it from but it was different, it had some connections missing! see pictures below.

I ordered A2WUH00101 (got from the parts manual)

But the part number on the failed board was A0P0H00100

Both parts number are definitely correct & both for the C552, but why does one not fit! Aggghh??

[ATTACH=CONFIG]26575[/ATTACH][ATTACH=CONFIG]26577[/ATTACH][ATTACH=CONFIG]26578[/ATTACH]

A2WUH00101 is for the mono 552 engine. Not compatible with the color C552... A0P0H00102 < (this is the number you need).

[copier tech]

Re: C552 with C-2557 &amp; C-2551 Error Codes, help!

Thankyou for this info, I wondered what I was doing wrong!

Don't suppose you want to buy this board off me by any chance lol

[CompyTech]

Re: C552 with C-2557 &amp; C-2551 Error Codes, help!

lol Sorry! Our parts manager wouldn't allow.. If you ordered through KMBS I think they charge a restock fee if returned. Although you might be able to file a warranty claim on it.