Maintenance
EMU Error Reporting
The primary function of the EMU is to detect and report conditions that can cause the pedestal to malfunction and to report malfunctions. To accomplish this, the EMU constantly monitors the following pedestal signals:
■+5 and +12 VDC
■AC input
■Power supply present
■Total power
■Power OK (P_OK)
■Power disabled
■Fan Speed (minimum and high speed)
■Fan exhaust temperature
■Shelf OK (S_OK)
The EMU can exchange signals with auxiliary devices and controllers.
EMU Error Conditions
The EMU reports error conditions and malfunctions using an audible alarm and an LED. The
