HP TC4100 - Manual (Page 92)

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Chapter 6 Troubleshooting
3. If the failure persists, verify there is not a hardware problem by running HP DiagTools.
If the problem persists, contact the HP Customer Support Center for further troubleshooting assistance.
Power Problems
1. Verify the HP Server’s power cord is plugged in to a known good power source.
2. Is the On/Off/Sleep LED on the front of the HP Server tc4100 a steady green, which indicts it is getting
power?
3. Check the power supply LEDs on the power supply and verify that it is lit a steady green.
4. Remove the HP Server form any UPS or PDU and connect the HP Server directly to a power source.
5. Verify the AC power source is good:
a. Verify the circuit breaker for the AC power outlet.
b. If the breaker was off, verify all devices connected to the HP Server share the same circuit breaker and
are the only devices on it.
c. Reset the circuit breaker after reconfiguring the devices if needed.
d. Verify the AC power outlet is not faulty by plugging in a known good device.
e. Verify the DC power supply cable connected to the system board.
6. If the fans (system, power supply, and processor heat sink) are not audible and the above steps are verified:
a. Disconnect the power cord/s for five minutes in order to reset the power supply’s circuitry.
b. With the power cord/s disconnected, remove the HP Server cover.
c. Remove all the accessory boards, including any hard disk drive controller board or video board.
Disconnect all mass storage power cords and cables.
d. Plug the power cord/s back in and turn on the HP Server.
e. If power is still not getting to the HP Server, the power supply may be faulty.
Contact the HP Customer Support Center for further assistance before replacing any parts.
NOTE The installation of the HP Server Remote Management Card (optional accessory)
changes the Power Supply Status LED behavior on the front panel. See Chapter 1 Front
Panel LED Indicators in this manual.
NOTE The HP Server tc4100 supports the ACPI (Advanced Configuration and Power
Management Interface) standard, which is a key component of a NOS's directed power
management. The supported features are only available when an ACPI-compliant NOS is
installed on the Server.
.
A blinking green power LED indicates the HP Server tc4100 is in a sleep mode. Refer to
Chapter 1 in this manual BEFORE further troubleshooting to verify that the HP Server
tc4100 is not in a sleep mode.
CAUTION Always wear an anti-static wrist guard when working inside the HP Server.