On a working HP8000N w mopier unit and / 2000 sheet Tray 4 installed,
i am attempting to install a 5 tray add-on bin (C4787A).

I have the data connection cables going from the printer to tray 4, then from tray 4 to the mailbox, but I cannot get the power light to come on. I believe
that I have all power cables hooked up - but can't find an installation guide that details when the light should be on / blinking etc.

Configuration sheet does not show the unit installed.

Suggestions welcome.