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big jase
03-26-2014, 09:18 PM
i have weird one well 2. the fault on the original c280 was it had lost the K prints , when printing in colour m colors all fine just no black! i replaced K drum K dev unit ITB and toner hopper units as level reading was really low. All this fault still there so i replaced the machine with a working C360 from our office it has been on site for around a week and now the same fault has occurred ,but only intermittently at present

any Ideas?:confused::confused::confused:

I have attached images from both prints and copys

blackcat4866
03-26-2014, 09:31 PM
I can't say that I've seen it myself, but I've heard tell of failing developer drive clutches. =^..^=

minimerlin
03-26-2014, 10:02 PM
I agree with Blackcat! K Drive clutch is toast!

EarthKmTech
03-26-2014, 10:07 PM
on second thoughts, i agree with that dev clutch failure, i bet thats what was wrong with the other machine too.

stevena86
03-27-2014, 04:27 AM
This post was wrong. Redacting info to not cause confusion. I had the wrong copier. Use what blackcat said.

blackcat4866
03-27-2014, 12:01 PM
Just out of curiosity gents, at what copy counts do you see this particular failure? =^..^=

hotfuser
03-27-2014, 03:46 PM
This is quite common as the wires on the K developing drive clutch break internally. They did not have a seperate part number for this as you had to get the whole drive system.
After a few moans they released a seperate part number for the clutch.
See enclosed document.
With a little bending you can get this clutch in.

stevena86
03-27-2014, 04:03 PM
Just out of curiosity gents, at what copy counts do you see this particular failure? =^..^=

2 times I've seen this it was on a machine with 500k+ and another sub 200k count.

avecosat
03-31-2014, 06:14 PM
Two times for this quality problem and other for noise . All the machines less than 100k copies :mad:

blackcat4866
04-01-2014, 01:05 AM
2 times I've seen this it was on a machine with 500k+ and another sub 200k count.


Two times for this quality problem and other for noise . All the machines less than 100k copies :mad:

Ouch! My machine population had on average 1.2M, and I hadn't seen it once. Maybe I'm just lucky ... =^..^=

stevena86
04-01-2014, 02:02 AM
Well, as you know with the new Bizhub 4e series, they build them bad in batches it seems :D

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