HP Tc4100 hp server tc4100 operation and maintenance guide (English, 2.1) - Page 110

Replacing the Power Supply

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Chapter 7 Replacing Parts Replacing the Power Supply Replace a failed power supply or install a redundant power supply in the HP Server. Only one power supply (425 Watt) is required for the HP Server. If power supply backup or redundancy is required, then an additional power supply may be installed in slot #2. If there is only one power supply installed, then the system will go down or fail to boot when the power supply fails. The status LED on the defective supply will be off (dark). If two power supplies are installed and one supply fails, the other supply will continue to operate and a front panel LED should turn red to indicate there is a problem. The status LED on the defective power supply will be off (dark). When power is applied to the system verify that the status LEDs for both supplies glows green. WARNING If a power supply bay is not in use, be sure to keep the cover on it. If you do not, system ventilation and EMI (electro-magnetic interference) suppression may be affected. Always insert a power supply filler panel into an empty power supply bay. Operating with an empty bay could cause thermal damage to the server. CAUTION Gently insert power supply into the bay to avoid causing damage to the connector (DO NOT SLAM). Removing the Power Supply 1. Locate the desired power supply for removal. Refer to Figure 7-6 for location of power supply status LEDs. Release Latch NOTE Power Indicator Handle Strainrelief Figure 7-6. Power Supply Rear Panel If the HP Server is powered on (Power LED on front is green) and the status LED for one of the seated power supplies is off, the supply has failed. However, when the HP Server is in standby (plugged in but not powered-down), the power supply status LEDs will be off (dark). 108

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Chapter 7
Replacing Parts
Replacing the Power Supply
Replace a failed power supply or install a redundant power supply in the HP Server. Only one power supply
(425 Watt) is required for the HP Server. If power supply backup or redundancy is required, then an additional
power supply may be installed in slot #2.
If there is only one power supply installed, then the system will go down or fail to boot when the power supply
fails. The status LED on the defective supply will be off (dark).
If two power supplies are installed and one supply fails, the other supply will continue to operate and a front
panel LED should turn red to indicate there is a problem. The status LED on the defective power supply will be
off (dark). When power is applied to the system verify that the status LEDs for both supplies glows green.
Removing the Power Supply
1.
Locate the desired power supply for removal. Refer to
Figure 7-6
for location of power supply status LEDs.
Figure 7-6.
Power Supply Rear Panel
WARNING
If a power supply bay is not in use, be sure to keep the cover on it. If you do not, system
ventilation and EMI (electro-magnetic interference) suppression may be affected.
Always insert a power supply filler panel into an empty power supply bay. Operating
with an empty bay could cause thermal damage to the server.
CAUTION
Gently insert power supply into the bay to avoid causing damage to the connector (DO
NOT SLAM).
NOTE
If the HP Server is powered on (Power LED on front is green) and the status LED for one
of the seated power supplies is off, the supply has failed. However, when the HP Server is
in standby (plugged in but not powered-down), the power supply status LEDs will be off
(dark).
Power
Indicator
Release
Latch
Handle
Strainrelief