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7-5
Troubleshooting Fans
Table 7-3
Description of fan LEDs
LED
Status
Description
ON
All fans work normally.
OK (Green)
OFF
A fan tray is faulty or no fan is installed.
ON
A fan tray is faulty or no fan is installed.
FAIL (Red)
OFF
All fans work normally.
If the OK LED is OFF, check whether:
z
Every heat dissipation fan works normally.
z
Something blocks the vent of the chassis.
z
A blank panel is installed on the slot without a card.
Troubleshooting LPUs
Table 7-4
Description of LPU LEDs
LED
Status
Description
ON/OFF
The LPU is faulty or is not installed yet.
RUN (Green)
Flashing
The LPU works normally.
OFF
The LPU is faulty or is not installed yet.
ALM (Red)
ON
The LPU works abnormally.
z
If the ALM LED of an LPU stays ON, something is wrong with the LPU. When you reset the LPU,
the ALM LED will turn on. After normal booting, the LED will be OFF.
z
When resetting an LPU, if the ALM LED stays OFF, the LPU may be disconnected from the power
supply. Check if the LPU is properly installed.