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Table 63 Description for PWR LEDs with numbers
O
On Off The corresponding power supply is operating correctly.
Off On
The corresponding power supply has no output power. (The cause can
be: the power supply is faulty or not switched on; a power cord
connection problem has occurred; the external power supply is
unavailable.)
Off Off No power supply is installed in the corresponding slot.
Fan LEDs (FAN)
The MPU provides two fan LEDs (OK and FAIL) to indicate the working status of the fan assembly.
Table 64 Fan LED description
O
On Off The fan assembly is operating correctly.
Off On A fan problem has occurred or the fan assembly is absent.
Off Off The switch is not powered on.
Card LEDs (SLOT)
The MPU provides card LEDs (SLOT). Table 65 shows the LED description.
• The LSQ1MPUA0 MPU provides numbered LEDs to indicate the status of LPUs in the corresponding
slots. The MPU LED indicates the working status of the MPU itself.
• Other MPU models provide numbered LEDs to indicate the status of active MPUs, standby MPUs,
and LPUs in the corresponding slots.
NOTE:
The number of a slot on the 7506-V is marked on both left and right sides of the slot, and that on other
models is marked on the right side of the slot.
Table 65 Card LED description
RUN ALM Descri
Flashing Off The corresponding card is operating correctly.
Off On The corresponding card is faulty.
Off Off
This status has occurred in the following cases:
• The corresponding card is absent.
• The card is not started (the software version of the switch does not match
that of the card).
On On The corresponding LPU is starting up.
On Off The corresponding MPU is starting up.
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