Bizhub c452

[konica7022]

Hi guys
i have blue color dirt marks before the end of the page,
i checked all the drums and transfer belt all clean cant figure out where its coming from? could it be fuser?
17833C88.jpg
i printed and uploaded the print pattern, kindly through some light.

[ni311]

Re: Bizhub c452

Are you sure it is blue? Think about it, if it would be the fusing unit, you should have only one color...

[allan]

Re: Bizhub c452

This one is easy.
The IU's are toast.
Remember to clean the laser slit glass when replacing the IU's.
Check the condition of the transfer belt and fuser.

Or...

You can disassemble the IU's and clean the corona units and doctor blades.
Mmm there is a tricky seal that breaks.
Remember to clean the laser slit glass when replacing the IU's.

[allan]

Re: Bizhub c452

Did not even know the machine can produce that print. Rather show the CMYK halftones at 127 and 255.

[konica7022]

Re: Bizhub c452

This one is easy.
The IU's are toast.
Remember to clean the laser slit glass when replacing the IU's.
Check the condition of the transfer belt and fuser.

Or...

You can disassemble the IU's and clean the corona units and doctor blades.
Mmm there is a tricky seal that breaks.
Remember to clean the laser slit glass when replacing the IU's.

well i cleaned the whole machine (without disassembling any component) then did image initialization and stabilization

but it is the blue color for sure and some time wont come sometime will show up more

Filter.JPG

[Copier Addict]

Re: Bizhub c452

It looks like one of your printheads is out of alignment. Fix that first and see if you still have the problem.

[konica7022]

Re: Bizhub c452

Another one enhanced image
A96B1166.jpg

[allan]

Re: Bizhub c452

P-codes?
Inspect your cyan drum.

[konica7022]

Re: Bizhub c452

P-codes?
Inspect your cyan drum.

no p codes, except the oil can & !

i cant find any stains on the blue drum its neat and clean, even moving it by hand wont show any residue cyan toner

[mo0651]

Re: Bizhub c452

when you touch the oil can, what's it tell you. Is that a new cyan IU ?

[konica7022]

Re: Bizhub c452

oil can says "machine status L-4 "

cyan IU is one block away from end of life
black IU reach end of life but still works fine

[mo0651]

Re: Bizhub c452

L-4 is black drum life warning.... Cyan drum is probably just wore out. They do fail prematurely every now and then. if you run a stabilization does it go away for a few copies??

[wseyller]

Re: Bizhub c452

Do a half stop test. If defect on cyan drum I would replace cyan IU. Seems clear to me that is probably the issue.

Sent from my XT1254 using Tapatalk

[konica7022]

Re: Bizhub c452

Do a half stop test. If defect on cyan drum I would replace cyan IU. Seems clear to me that is probably the issue.

Sent from my XT1254 using Tapatalk

i did that still cant see any residue in cyan drum now TB

ii swaped cyan 452 with cyan C451 but it gave and error c-2451

i dont have an extra cyan C452 in hand

i am trying to arrange one