Mpu Failure - HP A8800 Installation Manual

Table 21 Fan LEDs
LED
RUN
ALM
When the RUN LED is off or the ALM LED is on, the fan tray fails. To troubleshoot the fan tray:
If both LEDs are off, examine the power supply to make sure it is operating properly. For more
1.
information, see
Check for blockage of the air intake and exhaust vents on the chassis. If they are blocked,
2.
clean them to keep the air flowing.
Unplug the fan tray and plug it in again.
3.
Plug a spare fan tray into the slot. If the spare fan tray works properly, you can conclude that
4.
the old fan tray has failed.
If there is still a failure, contact HP Support.
5.

MPU failure

The appearance of routers varies by model.
Figure 29 MPU LEDs
(1) CF card status LED
(CFS)
(4) MPU status LED (SFS)
(7) MPU status LED (ALM)
When the MPU is operating properly, the RUN LED blinks and the ALM LED is off. When the RUN
LED is off, the MPU fails. To troubleshoot the MPU:
Verify that the power supply is operating properly. For more information, see
1.
system
Status
Off
Steady green
Off
Steady red
"Power supply system
(2) Network management port LED
(ACT)
(5) MPU status LED (ACT)
(8) LPU status LED (RUN)
failure."
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.
failure."
Figure 29 uses SR02SRP1F3 as an example.
45
(3) Network management port LED
(LINK)
(6) MPU status LED (RUN)
(9) LPU status LED (ALM)
"Power supply