7-5Troubleshooting FansTable 7-3 Description of fan LEDsLED Status DescriptionON 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 LPUsTable 7-4 Description of LPU LEDsLED Status DescriptionON/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 powersupply. Check if the LPU is properly installed.
