Chapter 5
Troubleshooting
Possible Problems
109
Step 4.
You have now reached the point where the failed Field Replaceable Unit (FRU or FRUs) have been
identified and need to be replaced. You must now perform the specific remove and replace and
verification steps.
NOTE
If multiple FRUs are identified as part of the solution, a fix cannot be guaranteed
unless all identified failed FRUs are replaced.
Step 5.
There may be specific recovery procedures you need to perform to finish the repair. For example, if
the display panel is replaced, you will need to restore customer specific information.
Possible Problems
This section contains example HP server problems and their possible solutions. Refer to the
HP Integrity and
HP 9000 Integrated Lights-Out Management Processor Operations Guide
for details on the iLO MP
commands.
The System Will Not Power-Up
Step 1.
Review the installation procedures for the server.
Step 2.
Check all power connection cables.
Step 3.
Verify that the Power On/Off LED on the control panel is illuminated. If not illuminated check the
AC power. If the LED is flashing yellow, the server is in DC standby. The power status may be
checked by the iLO MP
PS
command. If the Power On/Off LED is illuminated steady green, the DC
power supply(s) is on.
Step 4.
Check the normal operation of the power supply(s) and fans. The
PS
command of the iLO MP
interrogate the status of the power subsystem.
Step 5.
Check the system board diagnostic LEDs for proper operation. See System Board Diagnostic LEDs
later in this chapter.
Step 6.
Verify that both LEDs of the power supply (visible behind bezel) are illuminated. The upper LED
indicates presence of proper AC voltage and the lower indicates that the DC power is good.
Step 7.
Verify that all cables and modules are correctly connected. Especially check the display panel
connection. The iLO MP
VFP
command can be used to verify a match of control panel LED
indications.
Step 8.
If the server starts to power on and then power off, a voltage rail of the power supply may be out of
specification. The BMC monitors voltages and prevents power on when power values are out of
specification. If this occurs, check the SEL logs for an alert with a high level (alert level 5 or alert
level 7). Also check the power subsystem with the iLO MP
PS
command.
The System Will Not Boot
Step 1.
Examine the display panel LEDs for warning or fault indications. The server LED will be flashing
yellow with a warning indication and flashing red with a fault indication. If this occurs, check the
SEL logs for additional information on the alert.