Maybe this will work:
First, make your own Easy Setup by using Audio/Video Settings.
Go to Final Cut Pro>Audio/Video Settings and when it opens, adjust each of the pulldown menus as follows:
Sequence Preset: HDV - 1080i60
Capture Preset: HDV
Device Control Preset: HDV Firewire Basic
Video Playback: Apple Firewire NTSC (720 x 480)
Audio Playback: Firewire DV
Note: the last two are tricky because I'm not sure how you're going to be able to monitor HDV footage without something like a Matrox MXO (see other threads about this product). But for now, just put these in. Now click on Create Easy Setup and follow it's directions (name it something like HDV Capture or something like that). Now you have a Easy Setup, which you can load and tweak (but you'll have to save as the same or another setup if the tweak works when the original didn't). Try and see it these settings work. I've also seen comments from someone on this forum who goes by "Z1User" and he appears to have some good suggestions.
Something I've been seeing on these threads with some HDV camera/decks is it appears you might have to capture your HDV footage on the fly. I've done that and it basically means you start your camera tape rolling via the VCR functions and when prompted with a Capture window, you name the clip and when you press Okay, it's capturing HDV footage until you press Escape.
Hope this helps! Maybe?