Service manual

1-12 AlphaServer GS80/160/320 Service Manual
1.6 Operator Control Panel
The control panel is located in the front door of the power cabinet. It
has a three position On/Off switch, three pushbuttons, three status
LEDs, and an ASCII/graphical vacuum fluorescent display.
Figure 1– 6 Control Panel Assembly
PK0621
2
1
3 4
9 108
6
5
7
Users control the basic state of the system by use of pushbuttons and a
keyswitch on the operator control panel (OCP). LEDs and a fluorescent display
provide visual evidence of the system state.
Only the system control manager (SCM) in the master PCI box
1
is connected to
the OCP. If the user changes the system state by pushing a button or turning
the switch, the SCM communicates those changes to the system through shared
memory on the standard I/O module and the system responds accordingly.
1
An optional, redundant SCM in a second master PCI box may also be
connected to the OCP.