Mount your Enlarger unit to a tripod or copy stand.
Screw in your Enlarger lens (M39 mount).
Plug the timer into the light source (if not connected) then plug in the power supply.
Place your negative into the correct carrier and insert.
Select the correct mode on the timer (see 7 for settings).
Make sure everything is lined up and secure.
Check the timer settings then you are ready to print!