My roomba 530 cleans just great, but it will not return to the docking station--it just stops in the middle of the floor without any warning. I push the dock button, etc. to no avail.

Take the battery out

go to roomba.com when at there site go to customer care support then to pooduct resources then select a robot roomba,scooba,ect find your sereies 700,600 ect go to documents&manuals then to scheduling roomba then to viewing and deleting schedules follow the steps

It sounds like the 9-beep error. You can fix it by buying a repair kit from www.eesolutions.ca. I fixed mine in about an hour and a half.

Error code 5 is one of the side wheels
iRobot Customer Care Error 5 left or right Spin Roomba side wheels to...

Sounds like something's dead either with the roomba or the charging station or power supply. Does it charge up if you plug the power supply directly into the roomba, instead of into the charging station? If not, you'll probably have to return it to the place you bought it.

In-Warranty Units [check you warranty info }

Call Customer Service at 877-855-8593

I actually had the same issue with mine.. it was 6 years old and just stopped finding the docking station. Also wouldnt take a charge. So I just eliminated the docking station. The stations power cord will charge the unit. Hope this helps.

You may not believe this, but the new 500 series lighthouse virtual walls have both infrared and radio frequency communication. How they work and associate with the Roomba is pretty complicated. The best posting I've ever seen about how they work is here:
http://www.robotreviews.com/chat/viewtopic.php?f=1&t=11048

Check out that link to understand how the communication works.

If your Roomba is contained by the virtual walls, then you can assume the IR sensor on your Roomba us good....you should test that though. Then you might have to replace the "home base" which could have a bad IR transponder . New ones can be found for reasonable price at www.RoboticVacParts.com or you could order straight from iRobot for twice the price.

If the Roomba is not contained by the virtual walls, then the IR sensor on the Roomba is likely bad and you'll need to change the bumper on your Roomba. Again ....parts are available through ebay, or www.RoboticVacParts.com. Follow this link if you need it.
http://cgi.ebay.com/NEW-Roomba-500-series-white-bumper-510-530-532_W0QQitemZ270400281066QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3ef51cd9ea&_trksid=p4634.c0.m14.l1262&_trkparms=|301%3A1|293%3A1|294%3A30

Same thing happened to me. After "cleaning" the brushes and emptying the filter several times, I realized that the brushes were not properly secured. One of the yellow fasteners needed to be pushed closer to the middle nearer to the brushes. It was not secured properly. When I did this it fixed my problem.

Probably not, unless you just have to have the docking station. My roomba always had trouble mating with my docking station so I never used it. I just plugged it directly in to will using the AC adapter.