Looks like you damaged the Ribbon Cable connector that goes from the scanner board to the main board. We use to have that issue all the time back when those copiers where the new models. Replace the main board and be very careful when plugging in that ribbon cable.
Solution ID TAUS0620596EN* Solution Usage 1
Description
F49-6 at power up.
Solution
CAUSE: CN46 on the main CB is damaged.
SOLUTION: Replace the main CB (p/n 26WA-9300). To prevent this problem, use extreme care when removing or installing the ribbon cable into CN46.
Note: Instructions on how to properly operate CN46.
Solution ID TAUS0620596EN* Solution Usage 1
Description
F49-6 at power up.
Solution
CAUSE: CN46 on the main CB is damaged.
SOLUTION: Replace the main CB (p/n 26WA-9300). To prevent this problem, use extreme care when removing or installing the ribbon cable into CN46.
Note: Instructions on how to properly operate CN46.