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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 check the corresponding LEDs for the SRPU.
When the SRPU works properly, the RUN LED blinks, and the ALM LED is off. When the RUN LED is off,
the SRPU fails. Follow these steps to troubleshoot the SRPU:
1. Check that the power module works properly. For more information, see “Troubleshooting the
power supply system.”
2. Check that the SRPU model is compatible with the chassis. For more information, see the chapter
“Appendix B Pluggable module ordering guide.”
3. Press the RESET button of the SRPU to reset the SRPU. After the SRPU is reset, check whether the
corresponding RUN LED is on.
4. Check whether the SRPU is fully seated. You can unplug the SRPU, plug it again, and make sure
that the SRPU is fully seated.
5. If the switch has empty SRPU slots, plug the SRPU into an empty SRPU slot, and check that the SRPU
can work properly.
6. If the failure still exists, contact the local agents or technical support engineers.
Troubleshooting the LPUs
The status LEDs on the SRPU show the status of a card in the corresponding slot. According to the slot
number of an LPU, you can check the corresponding LEDs for the LPU.
When the LPU works properly, the RUN LED blinks, and the ALM LED is off. When the RUN LED is off, the
LPU fails. Follow these steps to troubleshoot the LPU:
1. Check that the SRPU works properly. For more information, see “Troubleshooting the SRPUs.”
2. Check whether the console terminal prompts that the software version is incompatible with the LPU
in the current slot. An LPU is compatible with a specific software version. If the software version is
incompatible with the LPU, upgrade the software to a compatible version.
3. Calculate the overall power consumption, and make sure that your power module can provide
enough power. For more information, see the chapter “Appendix B Pluggable module ordering
guide.”
4. Check whether the LPU is fully seated. You can unplug the LPU, plug it again, and press the ejector
levers inward until the ejector levers touch the panel tightly.
5. If the switch has empty LPU slots, plug the LPU into an empty LPU slot, and check whether the LPU
can work properly.
6. If the failure still exists, contact the local agents or technical support engineers.
Troubleshooting interfaces
The interfaces provided by SRPUs and LPUs all have corresponding LEDs. When an interface connected
to the network works properly, the corresponding LED is on.
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