I corrected the position of the grey cable like you guys suggested, but my hdd is still not detected on PC-3000.
So, I tried to connect to COM port using hyper terminal.
When I turn on hdd, I got following message.
Does it mean there is not any problems with PC USB Terminal connection??
What is weird is the terminal messages don't always appear.
I kept connecting and disconnecting hdd power cable, and sometimes the messages are printed.