You should just be able to rotate and remove the retaining ring and trackball. Once those are out of the way you can clean the rollers. FYI, I had a 280c that exhibited that problem, turns out oneof the plastic rollers had disappeared so I bought a replacement assembly for $10. ~ Larry, Darn Good Design. On Tuesday, July 22, 2003, at 09:52 AM, Bill Judson wrote: >> Personally, I have tried both the trackpad and ball for over a month >> each and I find the trackpad to be more precise if I use the "finger >> on" >> method where my finger is left on the pad when I click. The trackball >> is faster, but less precise because it tends to roll as I try to >> click. >> The one _real_ advantage to the trackball setup on the 230 Duo I use >> is >> that there are _two_ click pads, above and below the ball, which means >> when my thumb gets tired of clicking, I can use my other fingers (for >> c> > licking) >> >> Sincerely yours, Grizzlygiant > > While we're on the subject of trackballs, anybody have any advice on > how > to open up the trackball assembly itself? > > I have a 270c whose trackball seems to have lost its grip, especially > when > moved vertically -- often it will just spin & spin without grabbing > whatever it is it is supposed to grab. I imagine that it's like a > desktop > trackball, in that there are little rollers that occasionally get > gunked > up, as with mice. > > Maybe I'm wrong; I have the service manual, but there doesn't seem to > be > anything specific about how to get into & under the trackball itself > (as > opposed to removing the assembly as a whole). Thanks, > > -- > Over, > > Jutso > > http://pages.ripco.net/~jutso/