4 Mar
2003
4 Mar
'03
11:59 a.m.
On Tuesday, March 4, 2003, Tony Duell wrote:
My multimeter shows the following voltages on the mate-n-lock connectors
J3,5,7,9,11 relative to pin 8 (ground):
+15V at pin 6
+5V at pin 12
-15V at pin 15
The printset -- specifically, sheet 2 of 5410864-0-1 "PWR DIST BOARD" (page
40 of the BA11-K FMPS PDF I downloaded) -- leads me to believe that these
voltages can come only from the H745.
Other documents agree with you, though. I'm confused.
Well, I
finally got around to testing the PSU on my 11/34. ... Everything
checks out except for the -5V and +20V. ... However, some of the other
voltages coming from the H745 (according to the BA11-K FMPS) seem to be
OK.
I thought the H745 provided +20V and -5V only. What other voltage do you
think it's providing... I would unplug the 8 pin connector from any brick
you're not actually
using, particularly if it seems to be defective. Since that's all the
connections to the brick, the defective brick can be left physically in
the chassis.
Thanks. My next step, then, is to pull the cards, inspect them, and clean
out the backplanes and other currently hard-to-reach spots. Then I'll check
for bent pins on the backplanes and eventually test a minimal card set.
I'll double-check, but it looks like all my NPG jumpers are in. I don't have
any NPR peripherals except for the RK11-D, and I have ample "bleeding
knuckle" G727A grant cards. I don't *expect* any grant issues.
--
Jeffrey Sharp