
Start with the fault
Describe what is happening and how the door behaves. Avoid dismantling hardware or testing it repeatedly if it appears unsafe.
Compare suitable options
Condition, compatibility, key needs and the purpose of the change shape the available choices.
Confirm supply responsibility
Clarify whether hardware is customer-supplied, proposed by Keyline or still subject to availability and compatibility review.
Record approval and result
The approved option, quantity and ordinary operation test belong in the service record. Codes and key patterns do not.