Chapter 4. Error Analysis and Fault Isolation
EK–SMCPP–UG. A01
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 (interval of 1 second or more).
OFF.
Flashing (blinking)
The EMU LEDs (see Table 4–3) display the status of the enclosure (System
Fault), the temperature status (overtemperature), error conditions (enclosure
fault), and the status of 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 LED display
•
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 are
shown. For example, there eight different displays
for the failure of an individual blower. Therefore,
only a representative display of each error
condition type is shown.
