Siemens RM400 C Series, Operating Manual

Page: 41 / 227

Installing the system unit
4
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(3) Keylock switch
Set to LOCK:
The
[ON/OFF] and [RESET] buttons are disabled.
Set to LOCAL:
The system unit can be switched on and off manually. The
[ON/OFF] and
[RESET] buttons are enabled.
Set to REMOTE:
The system unit can be switched on remotely, typically via modem.
Under the Reliant UNIX or SINIX V5.42 operating system it is also possible
to switch the system unit off remotely.
This key can be removed from the lock in any of the three positions. The key
can be turned while the system is in operation. This has no effect on the
operational status of the system.
(4) DISK
This LED lights up when the built-in SCSI drives or other devices are being
accessed. This only applies for drives or devices that are connected to an
onboard SCSI controller.
(5) [RESET]
[RESET] can only be pressed if the keylock switch is set to LOCAL.
If you press [RESET] and keep it pressed for more than a second, the
system will reboot.
Under Reliant UNIX or SINIX V5.42, if you briefly press [RESET] (holding it
for less than a second), the system will switch to the kernel debugger, which
is used for servicing (see the manual “Reliant UNIX Installation and
Operation - RM200, RM300, RM400” or the corresponding manual for
SINIX V5.42).
Press [RESET] only if there is no other way of dealing with a
malfunction, as you may lose data.
!