Problem chessboard on FP 103

[hmac]

I would like to inquire about the fax mode of FP 103 (3310 / 3320). A chessboard appears in the top left and I want to remove.

Thank you.

[FRIDGEMAGNET]

I would like to inquire about the fax mode of FP 103 (3310 / 3320). A chessboard appears in the top left and I want to remove.

Thank you.

Hi
This is in the operator advanced manual.
Under paramaters bit switch 02.