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as far as I am aware, the only way you can access the online material is if you work for a canon business partner or canon directly.

if you don't work for either of those there is no official...

does the secondary transfer roller have corresponding marks when you cleaned it?

I have had the secondary transfer roller do something similar before but on another machine (this has left me with...

will need a bit more information than what is provided.

when you say random, is it that when you scan 20 pages, it will scan 10 in one run and then 13 in the next? or did you only try one run?
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since you recently changed the roller kit, incorrectly fitted transfer rollers can cause this too. if the drum's look good and/or haven't been causing a problem until just now, I'd double check that...

looks like transfer to me, but it would help to know what you have done thus far before we can recommend anything useful, otherwise it's just random stabs in the dark.

ah fair enough. I'd check the spooling settings too while I was there and make sure the computer is doing the heavy lifting rather than sending the job for the printer to do the spooling, that can...

unless I misunderstood him, I think he meant driver settings for the customer that is printing.

if the driver is set to paper type heavy 2 for example the machine will behave as if heavy 2 is in...

rebuild with genuine parts....

that sounds like a good way to get a pis**d off customer to me....

issue looks to be the transfer to me, although did you check they are telling the machine that the paper is in the heavy 2...

he means did you re-set the error in Service mode?

if you have an E001 error it will not clear itself even if you replace the fixing assembly with a new one, you need to manually clear the error:...

based on what you have already done, it would most likely be the Main controller 2.

that being said it could also be the DC controller or the firmware, I'd certainly start by flashing the firmware...

The cheap parts options are, in every sense of the word, a false economy.

they may be cheaper but 9/10 times you will replace them more often at fewer intervals which means your spending more...

I would personally not use non genuine parts in these machines, these machines are a pain in the backside at the best of times never mind the worst, you don't need to help them along :p

it will not be the laser as you are printing fine.

the problem will lay with the reader unit.

take the glass off, clean the camera and mirrors then check operation.

if the camera is clean...

it might just need cleaning out and resat. sounds like the DENS sensor isn't reading correctly, that or the hopper unit as a whole has failed.

these machines are great if they are looked after properly.

The E075 could be the: ITB, Transfer rollers (sit under the ITB), the patch sensor needs cleaning (do this first) or the belt has...

with respect, the thing that changed WAS the drum. therfore putting the old drum in as a fault finding excersie is the correct thing to do and could be the cause of your problem, more so if the chip...

not that long, I think you have bought a faulty machine, sounds like the HDD is actually gone.

I'd seek a full refund on faulty produce and buy a new machine instead of trying to revive relics...

the 52xx series is better, they fixed the ITB issues.

These machines are designed to be efficient and prevent the toner from being changed before it is ready.

Have the customer keep a stock of toner and they notify when they have used them and turn...

toner coat won't use enough toner to make a diffrence, all thats doing is putting a yellow coat on the 2nd transfer roller.

you want to use the 'clean main unit' function in...

have had a 535 error on an MPC2500 before, cannot for the life of me recall what the fix was, we did get it fixed though!

if it's any help it's in the fixing area but there is another thread on...

lol.

ah right so the cyan streaks are in the 20.

erm...tell them to only print black and white :p that will solve their problem :p

ok...so we are now onto a 5030i correct?

Cyan streaks, so you've checked the drum and the ITB were both ok, and also the laser...what about the cleaning blade?

it actually sounds like the...

haha yea, when you start getting to this point canon tend to start going with the lines of it may or may not work. when your at that point then they are starting to run out of ideas themselves.
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