Owner`s manual

Table 1–1: Upper Key Switch
Position Effect Light Color
O (Off) Removes all power, except to the battery backup unit
and optional storage.
No light
Standby Supplies power to XMI backplane, blowers, and in-
cabinet console load device.
Red
Enable Supplies power to whole system; console terminal is en-
abled. Used for console mode or restart, and to start
self-test.
Yellow
Secure
(Normal Position)
Prevents entry to console mode; positionused while ma-
chine is executing programs. Disables Restart but-
ton and causes the lower key switch to have the ef-
fect of Auto Start, regardless of its setting.
Green
Table 1–2: Lower Key Switch
Position Effect Light Color
Update Enables writing to CPUs and adapters. Halts boot pro-
cessor in console mode on power-up or when Restart
button ispressed. Used for updating parameters stored
in EEPROMs (upper key switch must be set to En-
able). Prevents an auto restart.
Red
Halt Prevents an auto restart if a failure or tran-
sient power outage occurs.
Yellow
Auto Start
(Normal Position)
Allows restart or reboot. Used for normal opera-
tion of the system.
Green
Table 1–3: Restart Button
Upper Key Switch Lower Key Switch Restart Button Function
Enable Update or Halt Runs self-test, then halts.
Enable Auto Start Runs self-test, and attempts a restart.
If the restart fails, then it re-
boots the operating system. If the re-
boot fails, control returns to the con-
sole.
Standby
or Secure
Any position Does not function.
Console Operation 1–3