3333 Ac Power Panel (With String Switch Feature) - IBM 3330 Series Reference Manual

There is one operator panel for each disk storage module.
OPERATOR PANEL FOR 3330 SERIES DISK STORAGE MODEL 1
CLOSE
START
[]
SELECT
d
OPEN STOP
LOCK
D
•
II
II
•
II
!START
CLOSE
[]
SELECT
d
STOP
II
11
Open~
and closes the drawer of one disk drive to
permit operator access.
In.I
A logical address plug with one unique address
IM
must be inserted in the socket associated with
each drive. Addresses 0-7 are used for drives at-
tached to one 3333, and addresses 8-F are used
for drives attached to the other 3333. The plugs
are interchangeable among drives attached to the
same 3333 except when a Modal 11 is used. Plugs
for Model 11 cannot be used in Model 1 or 2
drives and vice versa. Simply remove the plug
and insert the desired one in its place.
r.!1
Starts or stops one disk drive. When the switch
1111
is on Start, the drive motor starts, a brush
cycle is taken, and the read/write heads load.
When the switch is on Stop, the heads unload
and the drive motor stops.
II
3333 AC POWER PANEL (with String Switch Feature)
LOCK
•
D OPEN
II
•
liJ
Ready indicator. On when the drive is
ready for use.
II
This indicator comes on if a read/write malfunction
occurs in the drive.
II
Write inhibit. In Read position, only Read
operations can
be
performed on the disk.
Note: Upper elements are for upper drive; lower
elements are for lower drive.
For Model 2 modules, only the lower portion
is used.
,,,,~,,,,,~~
P - On: A momentary pushbutton that can be used to reverse the effect
of the power off switch. If system power is on, and the power off switch is
pressed to remove ac power from the drives, then pressing the power on
switch will restore ac power to the 3333 and attached drives.
Whenever system power is brought up, ac power is applied to the drives,
regardless of what wes previously done to the two pushbuttons.
Enable/Disable: Toggle switch that can
be
used to dedicate the 3333 and
associated drives to a single interface. Interlocking is provided.
Figure
S.
Power
Off: A momentary pushbutton that can be used to remove
ac power from the 3333 and attached drives.
If system power is on When the pushbutton is pressed, ac
power is removed from the drives. If system power is later turned
off, then on, ac power is reapplied to the drives; operation of the
power on pushbutton is not required.
Note 1: Machines without String Switch feature or Remote
Switch Attachment feature do not have these switches.
Operating Instructions 29