Olivetti D-color MF652 black dev installation error

[Luis]

Hi guys help me with that Olivetti D-color MF652
I changed the chip but no luck, change the unit but still giving this error

[techsxge]

Hi guys help me with that Olivetti D-color MF652
I changed the chip but no luck, change the unit but still giving this error
EDITED ANSWER:
Have you reconnected the wire? I think the dev unit also has a hardcoded "lock" in it. Need to take a better look tomorrow maybe

[Luis]

EDITED ANSWER:
Have you reconnected the wire? I think the dev unit also has a hardcoded "lock" in it. Need to take a better look tomorrow maybe

Yes my friend I did reconnect the wires.

[techsxge]

Yes my friend I did reconnect the wires.
Have you made sure to use the correct chip? You can't use a color chip on the K Dev.

Do a System Error Clear in Service Mode if you are sure that you used the correct chip and error should be gone.
Also make sure that you use original chips and not some atermarket bullsht

[allan]

Did any developer dump into the cavity? If the IU does not seat properly this can happen. If the drum is not hooked in properly the contacts can bend. Press on the unit while making the door switch see if that clear the message.