POE30U-560(G) Power Injector network connection problem

[Byoungik Ahn]

have installed AIR-CAP2702I-K-K9 with power injector and WLC.

AP is power on.

INjector has AC POWER & AP POWER LED is on.

But switch port state is not connected. Not ethernet cable problem.

Power injector is fault?

[Leo Laohoo]

But switch port state is not connected. Not ethernet cable problem.

To use power injectors, one needs TWO (2) ethernet cables:  One going to the AP and one going to the switch. 

Now if the cable going to the AP works, what happens if you tried to swap the cables around?  Meaning use the cable going to the AP and plug it to the "switch" port?

Another thing, HOW did you test and verified the cables?  And don't say, "the cables are brand new and fresh from a plastic pack".