Brother DCP-9045CDN Service Manual page 480

Change rate for regular compensation:
Change rate when compensating the pages with moving the CCD unit to the designated
position for scanning of the compensation data and obtaining the data actually.
For duplex scanning, this setting is not used since the machine takes the compensation
data of every page again.
- Selectors 5 and 6 / 7 and 8: Selection of judging function for scanning pages
compensation
These selectors set the condition to control scanning pages compensation. Some
operation losses occur in the control of the compensation. If you want to start scanning
immediately even if the image quality is not good, set to "01: Not discriminates". If you
want to give priority to the image quality even though losses are increased, select one of
others ("00: Discriminates depending on the rate of change" or "10: Discriminates every
page").
App. 1-65 Confidential