First make sure the drain lines are not plugged. Use a syringe and force some cleaning solution through to the drain bottle. Then draw some ink into the heads by attaching a syringe to the captops direct and with the heads parked on the capping station. If you can't get any ink into the syringe then you have a air leak .
Click on my sfr table hockey name to go to my page and see some of the things I wrote on there to trouble shoot a CJ or SC 500 or even the FJ 42, 52 series. It's easier to do that then go over the same thing all the time.