About Developing Unit
When it is time to replace a Developing Unit, a message appears to prompt you to contact your service representative. If the message appears, contact your service representative.
Tips
- The settings by the service representative are required to display a message about Developing Unit. By the factory default status, this message is displayed only in some area. For details, contact your service representative.
in the upper-right of a page, it turns into 
and is registered as a bookmark.