Troubleshooting The Fans - H3C S7500E Series Installation Manual

NOTE:
For more information about the PWR LEDs on an SRPU and the LEDs on a power module, see the
•
chapter "Appendix C LEDs."
After the power supply to the power module is turned off, it is normal that the LEDs stay on for a period
•
of time.
When the LEDs do not conform to the status mentioned above, the power module does not work properly.
Follow these steps to troubleshoot the power supply system:
Check that the switches of the power module are turned on. Power modules PSR1400-D,
1.
PSR2800-ACV, and PSR6000-ACV each have a system power switch and a PoE power switch. If
PoE is not enabled on the switch, you do not need to turn on the PoE power switch and you only
need to make sure the system power switch is turned on.
Check whether the power module is over-temperature. When a power module is over-temperature,
2.
it enters the self protection state. Make sure the switch is well ventilated.
Check the power cable connections. If a power cable is loose, re-plug the power cable. If a power
3.
cable is broken, replace it.
Check the power module installation. If the power module is not fully seated, re-install the power
4.
module to make sure it has a close contact with the backplane of the switch.
Check the power supply system. Make sure that the power supply system works properly and
5.
provides a normal voltage.
If the switch has empty power module slots, plug the power module into an empty power module
6.
slot, and check whether the power module can work properly.
Plug a new power module of the same model into the same slot, and connect it to the same power
7.
input end. If the new power module can work properly, the old power module fails. Contact the
agents to replace the old power module.

Troubleshooting the fans

The fan LEDs on the SRPU include an OK LED and a FAIL LED. When the fan works properly, the OK LED
is on, and the FAIL LED is off.
When the OK LED is off or the FAIL LED is on, the fan fails. Follow these steps to troubleshoot the fan:
Check whether the power module works properly. For more information, see
1.
power supply
Check whether the air intakes and exhaust vents of the chassis are blocked. If they are blocked,
2.
clean them to keep the air flow smooth.
If you install air filters on the air intakes, remove the air filters, clean them, and install them again.
3.
Check whether the fan tray is fully seated. You can unplug the fan tray, plug it again, and then fix
4.
the screws.
Check that the empty LPU slots and power module slots are installed with blank panels. If not,
5.
install blank panels for them to guarantee good ventilation.
If the failure still exists, contact the local agents or technical support engineers.
6.
system."
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"Troubleshooting the