Canon iR2200 Service Handbook page 173

<AE>
Use it to execute AE adjustment.
If you have cleared the RAM on the reader controller PCB, enter the settings indicated on
the service label.
AE-TBL
Use it to adjust the density of text for image density adjustment.
Range of 1 to 9; default: 5
adjustment
Copy density
White
A higher setting generates darker text.
A lower setting generates darker text.
F05-401-02
CHAPTER 5 SERVICE MODE
COPIER>ADJUST>AE
White
Original density
5-45