DECstation 5000/260, Руководство оператора, Страница: 19 / 215

The Main Components and How to Install Them
1.1 The System Unit
Table 1–1 Connectors, Controls, LED Display, and Lights on the System Unit
Item Function
TURBOchannel option slots 0, 1,
and 2
The points at which optional TURBOchannel
hardware can connect to the system unit.
Cover-release screw A captive screw that allows the cover to be removed
from the system unit.
Monitor-to-system-unit power
connector
The point at which power can pass from the system
unit to the monitor.
On/off switch The switch that turns the system unit on and off.
Pressing the | turns the system unit on. Pressing
the O turns it off.
System-unit power connector The point at which power from the power source
reaches the system unit.
Keyboard-mouse connector The point at which the keyboard-mouse cable
connects the keyboard and mouse or tablet to the
system unit.
Communications connectors The points at which communications devices, such
as modems and printers, connect to the system unit.
Halt button The switch that stops the worksystem software and
puts the workstation in console mode.
Diagnostic LED display Eight small red lights that indicate an error code
by means of the on-off pattern displayed when a
system failure occurs.
Base system ThickWire Ethernet
connector
The point at which Ethernet network cables connect
to the system unit.
Base system SCSI connector The point at which external SCSI storage devices
connect to the base system.
Power indicator light The light on the front of the system unit that
indicates whether the unit is on or off.
The Main Components and How to Install Them 1–5