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O2 CD drive - where does the little white gear go?

Posted: Thu Jun 20, 2013 11:59 pm
by icecubecheddarmilk
Howdy

I recently acquired an old R5k O2, and it suffers from the famous thrown gear problem in the CD drive unit. I've pulled apart the machine and I have the CD drive and the little white gear, but I can't figure out where it actually goes in the mechanism. I've searched the forums but the posts I came across didn't tell me where it should be. Can someone please help me? I'll take a couple of photos if that helps.

Re: O2 CD drive - where does the little white gear go?

Posted: Fri Jun 21, 2013 1:44 am
by kjaer
icecubecheddarmilk wrote:Howdy

I recently acquired an old R5k O2, and it suffers from the famous thrown gear problem in the CD drive unit. I've pulled apart the machine and I have the CD drive and the little white gear, but I can't figure out where it actually goes in the mechanism. I've searched the forums but the posts I came across didn't tell me where it should be. Can someone please help me? I'll take a couple of photos if that helps.


if it's the pinion I'm thinking of, it's press-fit over the tray motor spindle.

If it's come off because it's split, putting it back on is likely insufficient to restore the drive to operation.

Re: O2 CD drive - where does the little white gear go?

Posted: Fri Jun 21, 2013 1:48 am
by PymbleSoftware
icecubecheddarmilk wrote:Howdy

I recently acquired an old R5k O2, and it suffers from the famous thrown gear problem in the CD drive unit. I've pulled apart the machine and I have the CD drive and the little white gear, but I can't figure out where it actually goes in the mechanism. I've searched the forums but the posts I came across didn't tell me where it should be. Can someone please help me? I'll take a couple of photos if that helps.


Welcome.


Pictures would be good. Someone could add them to the wiki after we've solved your issue. Where the white cog goes is obvious when you see it but some people just replace the entire drive (with for example a yamaha SCSI CDRW).

R.

Re: O2 CD drive - where does the little white gear go?

Posted: Sat Jun 22, 2013 2:05 am
by icecubecheddarmilk
Ok I got it working again.

Here are some pictures for the wiki.

Re: O2 CD drive - where does the little white gear go?

Posted: Sat Jun 22, 2013 3:14 pm
by PymbleSoftware
icecubecheddarmilk wrote:Ok I got it working again.

Here are some pictures for the wiki.


Thanks, the O2 topic ( http://www.nekochan.net/wiki/SGI_O2#CD-ROM ) has been updated and this forum topic credited.

R.

Re: O2 CD drive - where does the little white gear go?

Posted: Mon Jun 24, 2013 1:07 am
by smj
Thanks Regan! And welcome/thank you icecubecheddarmilk!

Re: O2 CD drive - where does the little white gear go?

Posted: Wed Apr 09, 2014 9:46 am
by Torque
Just found this thread. I'm having the exact same issue, a thrown COG (luckily it's still intact).

Does anyone know how to remove the off white CD tray from the black assembly piece? My tray is stuck about 1" open, and I can't for the life of me figure out how to remove it so that I can get to the COG motor shaft location.

Any help is appreciated! :D

Re: O2 CD drive - where does the little white gear go?

Posted: Wed Apr 09, 2014 3:27 pm
by kjaer
IIRC it should just pull straight out the front of the drive. If it's really "stuck", though, the gear train is probably bound, which can happen with split pinion as the teeth will no longer mesh near the split. The parts are resilient enough to withstand a reasonable amount of forcing.

Re: O2 CD drive - where does the little white gear go?

Posted: Sun Apr 13, 2014 10:52 am
by Torque
Thanks for the help... unfortunately it's too locked up to come out easily.

Since I don't have time to fix, I'm happy to donate this unit with all parts to anyone here free, only ask for you to cover the cost of shipping. PM me if interested.