9 
2.  When the power module is in Absent state, perform the follow tasks: 
a.  Remove and reinstall the power module to make sure the power module is installed 
securely. Then execute the display power command to verify that the power module has 
changed to Normal state. If the power module remains in Absent state, go to step b. 
b.  Remove a
nd install the power module into an empty power module slot. Then execute the 
display power command to verify that the power module has changed to Normal state 
in the new slot. If the power module remains in Absent state, go to step 4. 
3.  Remove a
nd install the power module into an idle power module slot. Then execute the 
display power command to verify that the power module has changed to Normal state in the 
new slot. If the power module remains in Fault state, go to step 4. 
4.  If the issue p
ersists, contact H3C Support. 
Fan tray failure 
Symptom 
An operating fan tray or a newly installed fan tray has failed. 
Troubleshooting flowchart 
Figure 4 Troubleshooting fan tray failure 
 
 
Solution 
To resolve the issue: 
1.  Display fan tray information. 
<Sysname> display fan 
 Slot 1: 
 Fan 1: 
 State    : Normal 
 Airflow Direction: Port-to-power 
 Prefer Airflow Direction: Port-to-power