How to lose most of an an entire collection in one shot

Tony Duell ard at p850ug1.demon.co.uk
Mon Jun 22 13:07:02 CDT 2009


> > I'd much rather have an HP9000/200....
> > 
> > -tony
> > 
> Me too, and for the speed a HP 9000/300 ;-)

I am sure yuo realise why I prefer the series 200 to the series 300... 
Perhaps I am being unkind -- the only 9000/300 machine I'ev been inside 
is the model 340, and it seemed to be stuffed with unrecognisable 
PGA-packaged ICs. At least the series 200s are mostly standard parts with 
the odd PAL, ROM and microcontroller thrown in.

> I like the view of a HP 125 ET-head but it is not a very handy machine.

It is an interesting styling and odd to work on -- release a 
quarter-turn fastener, slide the casing slightly forwards on the stand, 
then lift it up on a stay. You can then release some Nylatch clips and 
lower the processor board to work on that,

The HP120, BTW (and the oriignal HP150, which has much the same physical 
layout) is odd... You can remvoe the top casing with 2 quarter-turn 
fasteners, but that jsut  gets you to the PSU and monitor PCBs. To get 
to the logic boards, you have to unclip the battery pack, then remove the 
jackposts on all the connectors, and then remove 5 screws and the rear 
panel of the card cage. 

-tony




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