Damaged imaging units bizhub c652 series

[AhmedChamumi]

Helo everyone,

Recently have have came across a weird fault in two different printers i.e. C652 whereby drum cylinders(yellow and magenta) get scratched on the rear by accumulated developer, i replaced fresh IU's as well as PH units but the the faults resurfaced after few hundred copies, has anyone out there encountered such a phenomenon and what exactly could possibly trigger that.

Kindly assist.

Best regards,

Ahmed

[Phil B.]

Helo everyone,

Recently have have came across a weird fault in two different printers i.e. C652 whereby drum cylinders(yellow and magenta) get scratched on the rear by accumulated developer, i replaced fresh IU's as well as PH units but the the faults resurfaced after few hundred copies, has anyone out there encountered such a phenomenon and what exactly could possibly trigger that.

Kindly assist.

Best regards,

Ahmed

if the dev units are collecting dev powder.. what makes you think the PH is the cause?

what is the life count on the dev units?

any other errors noted in the error log?

throwing parts at machines and HOPING it fixes the problem is silly IMHO.

diagnose WHY dev powder is LEAKING.

are you using genuine oem supplies?

what all have you done to it?

[drowranger]

make sure toner filter is not clogged as well. Good air flow to these IU units give them little bit extra life sometimes.

[Synthohol]

i had one years ago that it was as simple as leveling the machine. the floor tipped towards the wall so tons of dv eventually spilled out of the back of the DVs.
2 wooden blocks under the rear wheels didnt hear from him in ages after that.

[Phil B.]

i had one years ago that it was as simple as leveling the machine. the floor tipped towards the wall so tons of dv eventually spilled out of the back of the DVs.
2 wooden blocks under the rear wheels didnt hear from him in ages after that.

what kind of installation crew doesn't measure for levelness?

those 'techs' need to be 'called on the carpet' being a Service Manager I made SURE my installation crew were equipped with a 1' level.

[Synthohol]

3rd party truckers drop the machines off and plug them in where the customer wants.
if they have their own IT they program everything and some dont want/need a tech.
first service call is when a consumable times out.

[AhmedChamumi]

i had one years ago that it was as simple as leveling the machine. the floor tipped towards the wall so tons of dv eventually spilled out of the back of the DVs.
2 wooden blocks under the rear wheels didnt hear from him in ages after that.

Thank you for the input, i will go check that out.

[AhmedChamumi]

if the dev units are collecting dev powder.. what makes you think the PH is the cause?

what is the life count on the dev units?

any other errors noted in the error log?

throwing parts at machines and HOPING it fixes the problem is silly IMHO.

diagnose WHY dev powder is LEAKING.

are you using genuine oem supplies?

what all have you done to it?

I once had similar issue for cyan and i changed both IU and the problem disappeared thats why i tried a PH replacement
There is no any other error apart from D1 which obviously has nothing to do with such fault
Im using OEM iu's

Then again i thougth it might be HVT acting strange but i havent touched that part yet

[Synaux]

I once had similar issue for cyan and i changed both IU and the problem disappeared thats why i tried a PH replacement
There is no any other error apart from D1 which obviously has nothing to do with such fault
Im using OEM iu's

Then again i thougth it might be HVT acting strange but i havent touched that part yet

So the drums are scratched again after a few hundred copies?
Where exactly is the scratch? Pictures?

Also make sure the HV pins/connectors to the IU are nice and clean and don't have scorch marks

[EarthKmTech]

It's possible for the failing black dev unit/drum to allow developer to travel all the way along the belt back to its cleaning section, destroy that in the process and then continue destroying yellow imaging unit and magenta.

If there is any developer abrasion marks on the belt it must be replaced too as it will act like sandpaper on the drums with still embedded developer.

Just because blacks on the right doesnt mean it cant hurt things on its left

I in addition, though very rarely have seen the black developing unit dump its entire load through the back of the machine just like the crappy old c451 series used to do. I have only seen this happen 3 times (e series) and it's an annoying half an hour with the vacuum cleaner going and the machine stripped down.