Samsung CLP-300, Service Manual

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System Overview
Samsung Electronics
Service Manual
3-17
3.3 CRUM
In the case of Refill Toner Install
1) Perception of Refill Cartridge (when power is on or the cover is closed)
End of Life / life span data initialization -> judge to be Refill Cartridge
End of Life / life exhausted (simple refill) -> stop printing caused by life exhaustion
2) Operating
It is impossible to control appropriate development parameters, for there s no toner specification data.
It runs with the setting of default development parameter. (Image quality will be degraded, for the lack of appropriate
respond to the change of time and environment.)
3) Service Response
It is possible to response appropriately, for the information of cartridge life is saved at Back Up Area.
Process after CRU life expiration
1) Record the information of End of Life.
2) Copy the information of Operating Area into Back up Area.
3) Write-Protect Back up Area.
4) Clear some information of Operation Area.
-> Supplier/Model Name/MFC date/Serial Number (Manufacture Information)
-> Let cartridge refiller initialize manufacture information and life span information.