Mount your 4x5 to a tripod or copy stand, and carefully remove the ground glass.
Fix the light source to the back of the camera and secure with the ‘Graflok’ clips.
Mount your lens to the camera (for an enlarger lens use the provided lens board).
Plug the timer into the light source (if not connected) then plug in the power supply.
Insert your negative and ensure everything is lined up.
Select the correct mode from the timer (see 7 for guide).
Check the timer settings then you are ready to print!