Roger Harman wrote:
Google & the IBM Info Center are your friends....
http://lmgtfy.com/?q=ibm+e4a+front+panel+shutdown
What Larry said. The VERY FIRST thing I did was a Google search on a
variant of what you proposed, and my results were precisely as Larry
described.
Larry wrote:
1) Set the system mode to Manual
- Up arrow to 2, then Enter
- Up arrow to A, B, or D with M
- Enter until back to 02.
2) Press the Power (White) button until I saw 0?
3) Release and then press the Power button again to confirm that I wand the power off.
On an E4A, the LIC load source (A/B/C/D), the mode (M/N), and the
P/non-P IPL all cycle separately. And I was frantically trying to cycle
the mode to manual, but between the dim light, the tiny LCD, and my
increasingly presbyopic eyes, I couldn't tell that the mode was cycling
between "N" and "M." I went back to the front panel this morning, and
tried cycling the mode again, and even with decent light, it took me
several cycles before I could see that it was in fact cycling between M
and N.
And Rob, NO, NEITHER of the two Linux boxes in the room, NOR the WinDoze
box, are HMCs. They're all servers. And yes, shutting down everything
that could open a terminal session on the E4A was an incredibly stupid
thing for me to do; it was in the heat of shedding battery load. And no,
Rob, I've personally only even USED a Keypunch or a card reader a few
times, when I had a summer job at my old high school, during a brief
period when they had a local timeshare system (McGill University MUSIC 4
running on a 4341, with no capability for submitting batch jobs [or
otherwise accessing the line printer] from a terminal). The last time I
even SAW Hollerith card equipment in use was at the Computer History
Museum, on my Spring vacation, when I made an extra trip from San
Francisco to Mountain View just to see a demonstration of their restored
1401. And I don't think I've ever even seen a plugboard for a
plugboard-programmable unit record machine, much less wired one.
We did have the UPS cabled to the UPS monitoring port in the past.
Unfortunately, that caused a few problems of its own.
--
JHHL
midrange.com
