COMMENT ⊗   VALID 00003 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00002 00002	                WHAT TO DO IN CASE OF A POWER FAILURE
C00008 00003	                       RELOADING THE SYSTEM
C00015 ENDMK
C⊗;
                WHAT TO DO IN CASE OF A POWER FAILURE

	First, if the power was off for more than about  15  seconds,
Librascope  will  shut  itself down.  You will know about it when the
power is back by a high-pitched squeal from the alarm on top  of  the
disc  cabinet.    If  this  happens, don't do anything to the machine
except turn off the alarm. Then, call Ted Panofsky.  Otherwise go on:
	Go  to  the Librascope (the large blue box behind the PDP-10)
and open the door with the window in it.  On the panel, at  the  left
there  is  a  button  labeled  "GENERAL  CLEAR".  Push it, hold for a
second, and let go.  Some lights should come on. If not,  try  again.
If  still not, call someone.  Push each of the register reset buttons
(far right button in each row of lights).
	Next,  reset  the Ampex memories.  The Ampex memories are the
large blue boxes next to the windows to the right of the PDP-10. Open
the  left  hand  door of each memory and push the black button on the
left of the box that is on the lower left,  inside  the  door.   Then
push  the white button on the box between the memories.  When this is
done, the lights in the top row of each memory labeled "UA" should be
lit,  and  the  left-most  light  labeled  "EN"  of each group on the
interface (center box) should be on. If not, try again.
	Now,  reset  the New Ampex memories.  They are located at the
far end of the row of memories on the PDP-6 side  neer  the  windows.
Merely  push  the  blue-green  button on each memory.  Push the reset
buttons for the top two memories simultanously, and then the same for
the two on the lower left.
	Now it is time to start up the 3330 disc.  The controller  is
located  at  the  near end of the row of boxes containing the PDP-10.
Set into the end of it is a small panel.  Push the "POWER ON" button.
You  should  hear  it  start its power-up sequence.  If not: Open the
front doors of the cabinet (lift the black levers on the top  of  the
doors)  and swing the control panel open (the latch is on the right).
Then push up on the power switch on the  far  right  of  the  control
panel.  Now  go look at the disk units themselves.  If all goes well,
the disks should start spinning.  If none start, go behind the  unit,
open  the  first  door, then the panel within.  Now push the power on
switch. If all but one  or  two  drives  start  up,  go  behind  that
particular  drive, open the door and you will find a bunch of curcuit
breakers buried behind some electronics; one of them  probably  needs
resetting. Five of the six green ready lights should light up.
	Now look at the DEC memories (the blue boxes to the  left  of
the  PDP-6).    Each  of the four memories should have the AW RQ lamp
lit.  If a box's lamp is not lit, open the doors and push  the  RESET
button  (about  belly-button  high)  at  the same time as the RESTART
button on the light panel.  The AW RQ lamp should come on.
	Start  the  XGP  by  pushing  the  "ON" button on the control
panel.
	Start  the  line  printer  by  pushing the "ON" button.  Wait
until the red "ALARM  STATUS"  light  goes  out.   Push  the  "START"
button.  It should light up.
	Find the Petit Clock (see "RESETTING THE  CLOCK")  and  press
the  leftmost  two  buttons  in  the  month  field  several  times to
invalidate the clock setting which will be of course be wrong.
	Now the system can be reloaded in the normal way.
                       RELOADING THE SYSTEM

	We will now try to reload the system.  If any of these  steps
fails, go back to the last page and check that all conditions conform
to those proceedures.
	If  the  Librascope  is down (for instance if a power failure
lasted more than about 15 seconds)  you  will  have  to  reload  from
DECTAPE.  Skip the next section.

RELOADING FROM THE LIBRASCOPE.
	First push the stop switches on both the  PDP-10  and  PDP-6.
Now load the shiny blue "paper" tape loop into the tape reader on the
PDP-10.  On the 10, push RESET, then READ-IN. The  tape  should  read
for  a  while and then stop. If the tape stops and the teletype types
STANFORD .....  , then you are winning so go to  the  section  called
WINNING,  later  on in this document.  If the teletype types nothing,
look at Librascope.  If it has no red lights on, check conditions, If
it  does,  push  RESET then CONTINUE.  If it does the same thing, you
will have to load from Dectape.

RELOADING FROM DECTAPE
	Load  the tape "RIM 128K TENDUMP" into the tape reader.  Push
RESET, READ-IN.   The tape will read in  and  the  teletype  will  go
"chunk". Find the dectape "SYSTEM TAPE" (it is usually on a drive, if
not, mount it) and remember the drive number.  Then type n<alt> where
n  is  the drive number. Now type L<alt>S<CR>. The tape will spin and
then the teletype will go "chunk".  Type 206<alt> then G<alt> (if
Librascope is down substitute 200 for 206).   If it types STANFORD...
you  are winning so go to WINNING.  Otherwise, you are losing.   Look
at Librascope for red lights. If there are some, push "RESET and then
CONTINUE".  If not, do this:
1.	Turn DOWN the switch  labeled FM ENB on the panel on the left
		above the console switches on the 10.
2.	Set  address  switches   (upper  right  bank  of  18  console
		switches) to zeroes.
3.	Push "DEPOSIT THIS"
4.	Push "DEPOSIT NEXT" three times.
5.	Return FM ENB switch to original position.
6.	Push "CONTINUE".
	If the bell rings again, start over. If you get  STANFORD...,
go to WINNING. If you really can't figure it out, call someone.

WINNING
	If you get here, the teletype has typed STANFORD and  then  a
bunch  of  other  shit  the  last of which will be "...AT 204 OR TYPE
<CR>." Go to the PDP-6 console and push  RESET.     Set  the  address
switches at 204 (↓↓↓ ↓↓↓ ↓↓↓ ↓↑↓ ↓↓↓ ↑↓↓) and then push START. If the
PDP-10 types "DO YOU WANT TO REFRESH THE DISC?" (I hope  it  doesn't)
TYPE  "N"!!!!!     The teletype will now ask you to type the date and
time.  Follow each answer with a <cr>. The  system  will  now  either
come  up, or it won't.  If it doesn't, the light "MEMORY STOP" on the
console should be on.    If it isn't, you  lose  -  go  back  to  the
beginning.  If it is, push CONTINUE and the system should come up.

RESETTING THE CLOCK
	Now that the system is up, the clock needs to be set so  that
the  dates  of  your  files  will be correct.  This takes two people.
First log in at a III console and type R DPYCLK.  You  should  get  a
nice  picture  of  a  clock  and  an indication of what day the clock
thinks it is. Now, find the clock.  Start facing the  PDP-6  console,
turn  right and go until you can go left. Go left and then left again
immediately. You should be facing a rack of electronics with lots  of
messy  wiring.   About  shoulder  height  you  will  see a blue panel
labeled "PETIT CROCK".  Turn off the switch labeled "RUN".  Press all
the 0 buttons in turn starting from right to left. Now start toggling
the rightmost two switches push one then the  other  then  the  first
then the...) until the minutes on the display show about five minutes
later than it is. Then toggle the low order hour bit to  the  correct
hour, and so on until the clock is right.  Then when the time is what
the display says it is, push the three lower reset buttons, and  turn
the RUN switch back on and off you go.
	GOOD LUCK!!!