Chapter 4. Error Analysis and Fault Isolation
EK–SMCPR–UG. A01
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4–5
4.3
EMU Subsystem Status LEDs
Table 4–2 shows the possible EMU status LED displays. LEDs that blink or flash at a
one-second or greater interval are considered ON.
Table 4–2 EMU Subsystem Status LEDs
Symbol
Condition
ON (or blinking slowly at an interval of 1 second or
more)
OFF
Flashing (blinking at an interval of less than 1
second)
4.3.1 EMU Status LEDs
The EMU status LEDs (see Table 4–3) display the status of the following: the enclosure
(system fault), the temperature (overtemperature), the error conditions (enclosure fault),
and the individual blowers and banks of blowers. When the enclosure is functioning
properly, only the Power LED is ON. Table 4–3 describes:
•
The EMU status LED displays
•
The enclosure status associated with each display
•
The probable cause of the error condition
•
The actions recommended to correct the problem
NOTE
Not all possible combinations of LED displays can be
shown. Therefore, only a representative sampling of the
possible displays appears in Table 4–3.