Konica Minolta bizhub C451 Operation Manual page 5

It is possible to execute this operation in Administrator Mode or Service
Mode.
Deactivation
This is the operation to invalidate the activated License Activation Base
Functions.
It is possible to execute this operation in Service Mode.
Repair
It is necessary to execute this operation when the error of license
management state is displayed on the control panel. If it occurs, the License
Activation Base Functions are temporarily disabled. To recover the condition,
Repair operation has to be performed.
It is possible to execute this operation in Service Mode.
Initialization
Execute this operation when the error state is not resolved after performing
Repair. Basically, execute Initialization only when the error of license
management state occurs after performing Repair.
When performing the operation, please confirm that the error of license
management state occurs under what conditions (executed operations, parts
replacement, setting change and so on).
It is possible to execute this operation in Service Mode.
Issued by BT-CSO 5 Ver 1.03