A door that closes but does not latch reliably

An authorized service request concerns a door that sometimes reaches the frame without latching. A prior worker adjusted the closer repeatedly, but the complaint returned. Observations suggest possible hinge wear, strike misalignment and changing air pressure. The door also has an egress function that must remain available under its approved arrangement. The work order permits diagnosis and specified maintenance, not arbitrary replacement of fire-rated hardware or alteration of an access-control sequence. The exercise provides no actual manufacturer adjustment values, measured clearances or code approval. Students must explain a diagnostic approach considering the interacting components and the limits of the available evidence. The goal is a dependable documented function, not making the door move faster at any cost or treating one successful closure as proof of the entire assembly.