I was toled that one of the PSU bricks is broken. I
found
 some manuals on
 
http://www.mainecoon.com/classiccmp/PDP-11-> 34A/ but I can't
 read those TIFFs. I tried with xv, gimp,
 tiff2ps, Netscape 4.7x, Mozilla 1.2. I took the CDR with the
 TIFFs with me to work and tried to view them on a WinXP
 machine (puke). The machine nearly crashed when I tried to
 open the files. My SGI Indogo2 is broken so I can not try
 some IRIX tools. Where else can I get some schematics of the
 PSU bricks in a readable form?  
Try IrfanView - I think that's what I used. If that
fails, I can probably turn them into pdfs
(and convert to g4 along the way). As long as you
can read the various large scanned pdfs on the
web (like, say, the VAX-11/750 schematics), this
should work for you.
Antonio
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Antonio Carlini             arcarlini(a)iee.org