If I understood correct, you are trying to use the enet1 port to connect the Network printer.
1. Is the enet1 LED truns ON ?
2. How the AP is powered, POE or direct power supply ?
You can use the below link to enable the enet 1 port, If you need any authentication on the port, please make this port untrusted and add required AAA profile.
ap wired-ap-profile "NW-Printer"
wired-ap-enable
switchport access vlan <vlan>
ap wired-port-profile "NW-printer"
wired-ap-profile "NW-Printer"
ap-group <Ap-group name>
enet1-port-profile "NW-printer"