izumi@violet.berkeley.edu (Izumi Ohzawa) (12/13/89)
In article <185@toaster.SFSU.EDU> eps@cs.sfsu.edu writes: >In article <394@helens.Stanford.EDU>, mike@relgyro.stanford.edu >> It seems that the drive slot sucks in dirt from >> all over the room, and deposits it on the optical surface. >I've heard that this is only a problem on earlier cubes; they >reversed the fan direction in the later ones. This won't help if one has an earlier cube. Can we open the rear panel and simply reverse the fan, if our cube is the older one? Has anybody done this? I think somebody asked this once before, but I havn't seen the answer. To make sure, if the air comes out from the rear panel, your cube is an older one, and your optical may get a lot of dirt. Correct? Izumi Ohzawa, izumi@violet.berkeley.edu
jacob@gore.com (Jacob Gore) (12/13/89)
/ comp.sys.next / izumi@violet.berkeley.edu (Izumi Ohzawa) / Dec 12, 1989 / > Can we open the rear panel and simply reverse the fan, if our > cube is the older one? I asked a NeXT service technician this question, and he said that this is NOT recommended: in addition to the fan being reversed in the current cube, there are also more ventilation holes on the bottom. (By the way, having the air sucked in from the bottom of the cube causes the same problem in cubes that sit right on the floor.) Jacob -- Jacob Gore Jacob@Gore.Com boulder!gore!jacob
joe@mathcs.emory.edu (Joe Christy) (12/13/89)
In a bunch of previous articles, people write: >>> It seems that the drive slot sucks in dirt from >>> all over the room, and deposits it on the optical surface. > >>I've heard that this is only a problem on earlier cubes; they >>reversed the fan direction in the later ones. > >This won't help if one has an earlier cube. > >Can we open the rear panel and simply reverse the fan, if our >cube is the older one? Has anybody done this? After my second optical drive died, I had several conversations about this with NeXT people both here and in California. They are aware of air flow and several other problems with the robustness of the optical drives. They told me not to reverse my fan now, as that would probably precipitate some other problems, but that shortly they would have a uniform retrofit to all existing cubes which would correct all known OD problems. Like the replacement of the early optical drives, this will be free. At present, they said to be sure to keep the cube off the floor, and to keep the surroundings clean. From my own experience, I would recommend vacuuming the air slots on the back and bottom from time to time, rather than blowing off the dust, which can be amazingly deep. -- Joe Christy | joe@mathcs.emory.edu | Time flies like an Emory University | {decvax,gatech}!emory!joe | arrow, fruit flies Dept of Math and CS | joe@emory.bitnet | like bananas. Atlanta, GA 30322 | Phone: (404) 727-7956 |