User Service Guide, Fifth Edition - HP Integrity rx8640 SEU

Figure 4-7 Disk Drive LED Location
Table 4-7 Disk Drive LEDs
DescriptionFlash RateStatusLEDActivityLED
Normal operation, power appliedSteadyGreenOff
Green stays on during foreground drive self-testSteadyOffGreen
I/O Disk activityFlutter at rate of
activity
OffGreen
Predictive failure, needs immediate investigationFlashing at 1Hz or
2 Hz
YellowOff
Operator inducing manuallyFlashing at 0.5Hz
or 1Hz
YellowOff
Module fault, criticalSteadyYellowOff
Unit not powered or installedLEDs offOffOff
Interlock Switches
There are three interlock switches located in the SEU. Both side covers and the top cover have
an interlock switch located underneath each cover.
• Side Covers - If either side cover is removed while the system is powered on, the system
fans on the front and rear will increase in speed to ensure adequate cooling. An event code
will be generated to indicate a side cover was removed.
• Top Cover - If the top cover is removed while the system power is on, the PCI-X assembly
I/O fan speed will not change. An event code is generated to indicate the top cover was
removed.
MP Code FRU Reporting
The Management Processor (MP) interface defines the locations for the field replaceable unit
(FRU). These locations are denoted in the following figures to aid in physically locating the FRU
when the diagnostics point to a specific FRU that has failed or may be failing in the near future.
78 Troubleshooting