Operator`s manual

breaker on the power supply and the power cord, then refer to the VAX
4000 Troubleshooting and Diagnostics manual.
Figure 1–4: System Control Panel
The red over-temperature indicator flashes when the internal tempera-
ture approaches a level that may cause system components to overheat.
An audible alarm also provides a warning of a possible over-temperature
condition. If the components continue to heat, the system automatically
shuts down to prevent component damage. Instructions for turning on
the system after a preventive shutdown due to overheat conditions are
covered in the VAX 4000 Model 500 Operation manual.
Below the indicators are the Halt and Restart/Run buttons. The Halt
button is a two-position button. When you press the button, the system
halts. A red indicator on the Halt button lights when the button is set to
the in position. Before you can enter console commands, press the Halt
button again to return it to the out position. When the Halt button is
returned to the out position, the console mode prompt >>> is displayed
System Overview 1–7