Fan Failure - HP 12500 Series Installation Manual

Fan failure

Table 29 Fan LED description
LED
RUN
ALM
When the RUN LED is off or the ALM LED is on or flashing, the fan has failed.
To troubleshoot the fan:
If both LEDs are off, verify that the power supply is operating properly. For more information, see
1.
"Power supply system
Check whether the air intake and exhaust vents of the chassis are blocked. If they are blocked,
2.
clean them to keep the air flow smooth.
Verify that the fan tray is fully seated. You can unplug the fan tray, plug it again, and check
3.
whether the fan LEDs are normal.
If you have a spare fan tray, plug it into the slot, and verify that the spare fan tray can operate
4.
properly. If yes, the old fan tray fails.
If the failure still exists, contact the local agents or technical support engineers.
5.
MPU failure
Figure 60 MPU LEDs
(1) CF card status LED (CFS)
(4) Fan status LED (FAN)
(7) MPU status LED (RUN)
When the MPU is operating properly, the RUN LED (callout 7 in
RUN LED is off, steady on, or flashes in red, the MPU has failed.
Status
Off
Flashing
Off
Flashing
Steady on
failure."
9
1
(2) Switching fabric module LED
(SFC)
(5) Power status LED (PWR)
(8) Network management port LED
(LINK)
82
Description
The fan tray has failed.
The fan tray is operating properly.
The fan tray is in a normal state.
The fan tray is faulty.
The fan tray is faulty.
8
2 3 4 5 6 7
(3) LPU status LED (LC)
(6) MPU status LED (ACT)
(9) Network management port LED
(ACT)
Figure 60) flashes in green. When the