H3C Technologies H3C SR6600-X - Manual (Page 140)

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Figure 124 Fan LEDs of the SR6616-X
Table 51 Fan LED description
LED Status Description
(green)
RUN
Off The system is powered off or the fan tray is faulty.
Steady on The fan is operating correctly.
(red)
ALM
Off The fan is operating correctly.
Steady on The fan is faulty.