31 Mar
2022
31 Mar
'22
11:12 p.m.
From: Brent Hilpert
So apparently I've been looking at the wrong +5V
supply (H777) because
the rest of you are indeed looking at a different +5 supply (H7140),
both of which are in that same 11/24 pdf document
That's because the H777 is the P/S for the BA11-L 5-1/4" box, and the H7140
is the P/S for the BA11-A 10-1/2" box - both of which are, quite reasonably,
covered in the -11/24 print set.
I really wish when people are asking for assistance or
talking about a
schematic or circuit they would include a link/reference to exactly
what they are looking at
But everone probably _was_ looking at the same document - just different
pages! Alas, DEC doesn't number _all_ the pages with a 'unique within the
print set' identifier. Still, one could say 'page xx of the PDF'.
Noel
31 Mar
31 Mar
11:38 p.m.
On 2022-Mar-31, at 4:12 PM, Noel Chiappa wrote:
From: Brent
Hilpert
So apparently I've been looking at the wrong
+5V supply (H777) because
the rest of you are indeed looking at a different +5 supply (H7140),
both of which are in that same 11/24 pdf document
That's because the H777 is the P/S for the BA11-L 5-1/4" box, and the H7140
is the P/S for the BA11-A 10-1/2" box - both of which are, quite reasonably,
covered in the -11/24 print set.
I really wish when people are asking for
assistance or talking about a
schematic or circuit they would include a link/reference to exactly
what they are looking at
But everone probably _was_ looking at the same document - just different
pages! Alas, DEC doesn't number _all_ the pages with a 'unique within the
print set' identifier. Still, one could say 'page xx of the PDF'.
Which is what I do in these sorts of discussions, at least if it has not been specified
previously, and especially when dealing with larger docs. E.g. from my previous messages
in this thread:
ref: pdfPg.152,etc of
http://www.bitsavers.org/pdf/dec/pdp11/1124/MP01018_1124schem_Aug80.pdf
pdfPg.30 of
http://www.bitsavers.org/pdf/dec/pdp11/1124/MP01018_1124schem_Aug80.pdf
(The latter being the page for the H777 I was mistakenly looking at.)
Makes it easier for a recipient, everyone following, and yourself if you have to go back
to it in the course of subsequent discussion.
1 Apr
1 Apr
3:46 a.m.
On Fri, Apr 1, 2022 at 12:13 AM Noel Chiappa via cctalk
<cctalk at classiccmp.org> wrote:
Actually I wasn't. I was working from the 11/44 printset (I recognised
the power supply as being the same number) -- on paper.
And I am not going to start counting pages.
However I did say 'bias/interface board' which I am pretty sure is not
a part of the H777 PSU.
-tony
I really wish
when people are asking for assistance or talking about a
schematic or circuit they would include a link/reference to exactly
what they are looking at
But everone probably _was_ looking at the same document - just different
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ard.p850ug1＠gmail.com -
bhilpert＠shaw.ca -
jnc＠mercury.lcs.mit.edu