DEC 4000 600 series, Owner'S Manual, Page: 41 / 242

Using the Operator Control Panel
Power Down
the System You use the DC on/off switch (shown in Figure 1–10) in
conjunction with the AC circuit breaker to power down the
system.
Note
You rarely need to power down the system. You may
be able to accomplish your task by pressing the Reset
button (See Reset the System, earlier in this chapter.)
For maximum reliability, Digital recommends that you
run your system continuously.
Power down the system as follows:
Step Action
1 Shut down the system using the shutdown
procedure described in your system software
manual.
2 Press the DC on/off switch at the front of the
system to the off position (0).
3 Press the AC circuit breaker at the rear of the
system to the off position (0).
4 Power down external devices if you have them.
Refer to the device installation guide.
Monitor
Self-Test
Results You can use the self-test status lights (shown in Figure 1–10) to
check the results of the system self-test.
The system performs its self-test when you reset the system
(press the Reset button) and when you power up the system.
During the self-test, the system tests each module in the card
cage. As a module is tested, the light representing that module
on the operator control panel comes on. The light goes off when
the test completes successfully.
If one or more of the self-test status lights remains on after the
self-tests, refer to Chapter 9.
Getting Started 1–21