The door lock card issuing machine cannot issue cards.

There is something wrong with this system. The failure of the door lock card issuer is caused by the system failure of the door lock card issuer, and only the door lock card issuer needs to be replaced. The door lock card issuing machine is a hotel door lock. At present, the card issuers of electronic door locks include built-in manual card issuers, external manual card issuers, external self-propelled card issuers and external automatic card issuers.