Powering Up the System
7-7
1.
Turn the power on by pushing the circuit breaker handle up.
2.
Go to the front of the cabinet and check that the green power regulator
LED(s) are blinking.
3.
Place the control panel keyswitch in the Enable position. The follow-
ing should occur (see Figure 7-3):
a. The yellow Fault indicator on the control panel blinks indicating
power sequencing is taking place.
b. The blower turns on.
c. The yellow Fault indicator stays on continuously for a short time
indicating self-test is taking place. Module self-test LEDs light as
described in Section 8.1 and a self-test console display appears on
the console terminal as described in Section 8.2. The console
prompt appears at the end of a successful self-test display. The yel-
low Fault indicator goes out when self-test passes for all modules
in the system.
Go to the rear of the cabinet and check the CCL LEDs (see Figure 7-3).
The cabinet control logic (CCL) module has four LEDs that are visible
through a shield slot when the rear door is opened. These LEDs verify that
the enable signals have been sent to the four PIU power regulators. The
LEDs are numbered one to four.
The LEDs are lit if a PIU is present and power sequencing has been com-
pleted. If a LED is not lit, the PIU is not present, the PIU is not cabled
correctly, or the CCL module has not enabled the PIU. Turn on the power
switches on the individual PIUs as needed.
The CCL module also has a power LED that lights when the circuit
breaker is turned on; the LED indicates that 5 VDC is present on the CCL
module.
For more information:
Basic Troubleshooting