[rescue] Upgrading an E220R to E420R...

Earl D. Baugh Jr. earl at baugh.org
Sat May 21 21:29:32 CDT 2005

Wondering if anybody has upgraded an E220R to an E420R.   I've got a 420R 
motherboard (which is the same of course
as an Ultra 80) and after some disassembly of the 220R, I found that the 
mounting for the motherboards is a slight bit
different.   Cabling wise, it looks pretty close.   I did try just resting 
the board in, and did get some positive indications,
but no boot (I'm not 100% sure that this board is good...but the back fan 
did come on).   I did find out that the chassis
back plate is different (that's gonna be fun to find....) which stupidly I 
didn't check out before I started disassembling it.
(it's all put together now, a couple hours later...sigh...)

The plate that sits under the 220R motherboard (which does come out) has 
different mounting tabs on the sides than
would fit  the 420R motherboard (it doesn't have the "cut-outs" on the 
sides, nor does it have the right holes to be
able to utilize the plastic mount which fits under the 220R 
motherboard).   The 420R motherboard I have also has a metal
mounting assembly underneath it.   Now, I've not worked on U60's and U80's 
so I don't know if this a mounting for one of those
boxes, and something different is used when it's in 420R type chassis.  The 
FEH I have has all the board specs, but not details
on how the thing comes together.   The installation manual shows a 
motherboard that's got cut-outs on the sides, so perhaps
the U60 motherboard is slightly different when it's in a 420R chassis??

Anybody got pictures of inside of a 420R that I can take a gander 
at?  Anybody got one with a motherboard out, so
I can see what the mounting looks like?  I'd like to know what I'm looking 
for.  (There is one 420R at work that I think
I might be able to go see...not 100% sure....but figured if folks could 
take a few pictures, a good reference for others/
I definitely won't be able to pictures of inside it at work...no cameras 



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