System!370
Model
168
Source: GC38-0030 System/370 Model 168 Operating Procedures
Power-On
Procedure
DANGER: Before turning
on
the
system, check
all
peripheral units externally. Do
not
mount
tape
reels until
after
power·on.
1.
Press POWER
ON
(turns
red).
2. Wait
about
one
minute until POWER ON
turns
white.
3. If
the
manual light does
not
turn
on
after
approximately
two
minutes,
follow this procedure:
a.
Set
RSDT/NON RSDT
to
RSDT.
b.
Set
FILE SECTION SELECT
to
o.
Press LOAD
MD.
The
manual light should
turn
on within
one
minute.
Power-Off
Procedure
Before initiating
the
power-off sequence, issue Write log and Halt commands. If manual
light
is
not
on,
press STOP;
the
manual light will
come
on. Perform "Two-Channel
Switch
procedure"
if applicable.
1.
Check all tape units. Place units in unload
state
by
pressing RESET and
LOAD REWIND. After rewind
is
completed,
press UNLOAD
on
each
tape
unit. Press RESET
to
shut
power window.
2. Check
all disk drives. Place drives
in
unload state by switching
to
STOP on
each disk drive
that
is
running.
(DiSK
drives
must
be individually
turned
off
!Jefore power
is
turned off.;
3. Press POWER
OFF.
Power
is
sequenced
down
automatically. POWER
ON
light goes off.
4.
Continue
power-off procedures
fo'
peripheral
equipment
not
connected
to
the
power-off sequence.
To
IPL
1.
Set
LOAD UNIT switches
to
SYSRES volume address.
2. Press ENABLE
SYSTEM CLEAR
and
LOAD simultaneously. Pressing these
pushbuttons
starts IPL,
but
first clears storage. Manual light goes off, LOAD
light comes on, and system reads
in
the
IPL program
3. When LOAD light goes off, IPL
operation
is
successfully completed.
4.
Reply
to
system messages and set TOD clock.
Loading a
Secondary
Nucleus (OS)
Follow
the
procedure
shown for
the
Mod 165, using either
the
PR-KB
or
the
light
pen.
To
Display Genaral Registers
1. Press
STOP. Manual light comes on.
2.
Set
CRT MODE SELECT
to
CE
3.
Set
STORAGE SELECT
to
GEN PUR.
4.
Set
MANUAL ENTRY SELECT
to
MCAR.
5. Press cursor advance key
=>
until
the
cursor underscores
the
first (high-order!
byte
in
MCAR.
6.
Enter
two
hex digits
(to
select desired register) by pressing
t~e
data keys.
Use
00
to
OF
for 16 general registers.
7. Press
DISPLAY.
The
contents
of
the
addressed genera! register
are
displayed
on
the
CRT
in
the
right half of
the
MCDR.
B.
Restore CRT MODE SELECT
to
OP.
9. Press
START
to
resume processing.
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