Troubleshooting; Troubleshooting Tips; Possible Issues; The System Does Not Power-On - HP Rx2620-2 - Integrity - 0 MB RAM Service Manual

5 Troubleshooting

This chapter provides troubleshooting instructions for maintaining the server.

Troubleshooting Tips

CAUTION:
drives) removed. Damage to server components can result due to improper cooling airflow.
If you do not replace the top cover within 30 minutes, the server automatically shuts off.
• For problems with an optional disk array controller board, refer to the appropriate manuals
provided with the array controller.
• For general information on HP server products, see the HP website at http://www.hp.com.

Possible Issues

This section contains example server problems and their possible solutions. For details on the
iLO MP commands, see the HP Integrity and HP 9000 iLO Operations Guide.

The System Does Not Power-On

1. Review the installation procedures for the server.
2. Check all power connection cables.
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. Check the
power status with the iLO MP PS command. If the Power On/Off LED is illuminated steady
green, the DC power supply is on.
4. Check the normal operation of the power supply and fans. The iLO MP PS command
interrogates the status of the power subsystem.
5. Check the system board diagnostic LEDs for proper operation. See System Board Diagnostic
LEDs later in this chapter.
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.
7. Verify that all cables and modules are correctly connected. Check the display panel
connection. Use the iLO MP VFP command to verify a match of control panel LED indications.
8. 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. 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 Does Not Boot

1. Examine the display panel LEDs for warning or fault indications. The server LED flashes
yellow with a warning indication and flashes red with a fault indication. If this occurs, check
the SEL logs for additional information on the alert.
2. Examine the four diagnostic LEDs for specific warning or fault indications. The diagnostic
LEDs present patterns that categorize the source of the warning or fault. This information
is also presented in the SEL.
Do not operate the server for more than 30 minutes with any cover (including disk
Troubleshooting Tips 95