Xerox 5855 replace drum message

[mkdirs]

friends i have a problem with xerox 5855
the machine ask to replace drum
i replace with new one but the machine ask again to replace the new one,
so i change the chip with 100% ,, again the copier ask to replace the drum and the chip become 0%
so i replace Hdd and SD card with new image and altboot with firmware and that did not fix the problem every time i change the drum with 100% life become 0% and the copier ask to insert new one .

any idea

[adriansto]

Check the connector where the drum chip make electrical contact.
How do you know the chip have 0 counter on it ?

[mkdirs]

Check the connector where the drum chip make electrical contact.
How do you know the chip have 0 counter on it ?

connector is ok
i try the new drum on another copier and i get 0%

[Welsh Wizard]

I have had this fault be caused by the machine's CRUM connector for the drum to be forced backwards and is not making electrical contact sufficiently.

Remove rear cover, remove flywheel from main drive. open front door and disengage drum and slide out slightly.

At rear, locate machine's CRUM connector and check integrity of the housing.

If everything looks okay, try forcing the connector bracket towards the front of the machine with a screwdriver or bar etc.

Refit flywheel, rear cover, drum and test.