Possible Problems; The Server Does Not Power On; The Server Does Not Boot - HP Integrity rx4640 Service Manual

NOTE:
unless all identified failed FRUs are replaced.
5. There might be specific recovery procedures you need to perform to finish the repair. For
example, if the display panel is replaced, you need to restore customer-specific information.

Possible Problems

This section contains example HP server problems and their possible solutions.

The Server Does Not Power On

1. Check to see if the iLO MP is working. If so, access the SEL to determine the problem.
2. Check all power connection cables.
3. Verify that 200-240 VAC power is available at the AC power receptacle. Check the receptacle
output with another device.
4. Check the power supply fans to see if they are operating. The fans will operate off the DC
voltage generated by the power supply.
5. Check that the Power LED on Front Control Panel is illuminated.
LED Indicators" (page
6. Check all connections from the power supply to the power distribution module.
7. Verify that all cables and modules are correctly connected. Especially check the display
panel connection.
8. Review the installation procedures for the server. See the HP Integrity rx4640 Installation
Guide.
9. If the server starts to power-on and then power-off, a voltage rail of the power supply might
be out of specification. The BMC monitors voltages and prevents power-on when power
values are out of specification.

The Server Does Not Boot

1. Examine the front panel LEDs for warning or fault indications. The server LED flashes yellow
with a warning indication and flashes red with a fault indication. See
LED Indicators" (page
2. Examine the QuickFind Diagnostic Panel for indications of specific warning or fault
indications. The diagnostic LEDs present patterns that categorize the source of the warning
or fault. See
3. Display and examine the system event log (SEL) and forward progress log (FPL) for further
information relating to warning or fault isolation.
4. Review the firmware revisions of all firmware.
NOTE:
the iLO MP SR command. However, the result may not be accurate because the versions it
displays are updated by system firmware during the boot to EFI. If the system firmware
does not boot to the point where it updates the iLO MP firmware version, the versions
displayed by the SR command might not be correct.
5. To cycle the server power, use the pc off, pc on, or pc -cycle iLO MP command.
6. Turn the server off, wait at least 20 seconds, and turn the server on to see if the failure clears.
7. Check that all DIMMs are seated properly.
8. Check that the DIMM configuration on the I/O baseboard matches those approved. A
minimum of one DIMM pair must be installed.
96 Troubleshooting
If multiple FRUs are identified as part of the solution, a fix cannot be guaranteed
98).
98).
"QuickFind Diagnostic Panel LED Indicators" (page
If the server does not boot to EFI, the only way to check firmware revisions is with
See"Front Control Panel
"Front Control Panel
100).