H3C Technologies H3C S7500E Series Switches - Manual (Page 88)

77
4. Verify the power module installation. If the power module is not fully seated, re-install the power
module to make sure it has a close contact with the backplane of the switch.
5. Verify the power supply system. Make sure the power supply system is operating correctly and
provides a normal voltage.
6. If the switch has empty power module slots, plug the power module into an empty power module
slot, and verify that the power module can operate correctly.
7. Plug a new power module of the same model into the same slot, and connect it to the same power
input end. If the new power module can operate correctly, 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 is operating correctly, 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.
To troubleshoot the fan:
1. Verify that the power module is operating correctly. For more information, see " Troubleshooting
the power supply system ."
2. Verify that the air intakes and exhaust vents of the chassis are not blocked. If they are blocked,
clean them to keep the air flow smooth.
3. If you install air filters on the air intakes, remove the air filters, clean them, and install them again.
4. Verify that the fan tray is fully seated. You can unplug the fan tray, plug it again, and then fix the
screws.
5. Verify that the empty LPU slots and power module slots are installed with blank panels. If not, install
blank panels for them to guarantee good ventilation.
6. If the failure persists, contact the local agents or technical support engineers.
Troubleshooting the SRPUs
The status LEDs on the SRPU show the status of a card in the corresponding slot. According to the slot
number of an SRPU, you can examine the corresponding LEDs for the SRPU.
When the SRPU is operating correctly, the RUN LED flashes, and the ALM LED is off. When the RUN LED
is off, the SRPU fails.
To troubleshoot the SRPU:
1. Verify that the power module is operating correctly. For more information, see " Troubleshooting
the power supply system ."
2. Verify that the SRPU model is compatible with the chassis. For more information, see "Appendix B
Pluggable module ordering guide."
3. Press the RESET button of the SRPU to reset the SRPU. After the SRPU is reset, verify that the
corresponding RUN LED is on.
4. Verify that the SRPU is fully seated. You can unplug the SRPU, plug it again, and make sure the
SRPU is fully seated.