Why won't my oven door latch for self-cleaning?

The oven door cannot be latched for self-cleaning while the Oven Locked light is on, which can occur after several continuous high-temperature bakings or broilings. Allow the oven to cool until the Oven Locked light goes off, then the door can be latched. Also, the Oven Selector knob must be at CLEAN or OFF before the latch can be moved. (Page 23-24)