Electrical installation and wiring
98-145168-A Chapter 4: Installation 4-19
4444
maintenance interface on the front of the CSDU or via the AISD 1 / EFB 1 Ethernet
interface).
The front panel status LEDs will display the following:
• Steady red: A fault, which may degrade the system operation, is present in the CSDU.
• Flashing short green/long pause: Power On Self-Test (POST) or Person Activated Self-
Test (PAST) is in progress.
• Flashing long green/short orange: No failure, but a BITE failure/warning is logged in the
BITE log, severity ERROR.
• Steady green: No faults.
• Off->orange->off->red->off->green->off: Indicator Test
• When powering up the initial color of the 3 LEDs is orange.
Figure 4-7: SDU-5045 Front plate
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