H3C Technologies H3C S12500 Series Switches - Manual (Page 142)

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LED Status Description
Off The MPU is faulty.
Fan status LED
Table 51 Fan status LED description
LED Status Description
FAN (green-red)
Flashing green All the fan trays are operating properly.
Flashing red One or two fan trays are faulty.
Steady on The MPU is faulty.
Off The MPU is faulty.
Power status LED
Table 52 Power status LED description
MPU LED Status Description
PWR (green-red)
Flashing green All the power frames are operating properly.
Flashing red One or two power frames are faulty.
Steady on The MPU is faulty.
Off The MPU is faulty.
MPU LEDs
Table 53 MPU LED description
MPU LED Status Description
ACT (green)
Steady on The MPU is in active state.
Off The MPU is in standby state.
RUN (green-red)
Flashing green The MPU is operating properly.
Flashing red The MPU is faulty.
Steady on The MPU is faulty.
Off The MPU is faulty or not in position.
LPU LEDs
Typically an LPU has two types of LEDs: interface and RUN LEDs.