32 | Installing AC Power Supplies
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WARNING: Prevent exposure and contact with hazardous voltages. Do not attempt to operate this system
without the AC-cord Retainer.
• Your power cables connect to an appropriate AC power supply in a manner that complies with your
local electrical codes. For AC systems, a Main Disconnect must be provided for each AC cord.
• Two fan trays are installed.
To test the power supplies and fan trays:
Power Supply and Fan Tray LEDs
Step Task
1 With the fan trays and power supplies installed, power on the system.
• Flip the On/Standby switch located next to plug AC-0 to the ON position (down).
2 Power Supply Status LEDs should be green. If an LED is not lit or is blinking amber:
• check that the units are properly installed and are plugged into the correct slot.
• Verify the power source
• If the LED remains unlit or blinking amber at power up, replace the power supply.
3 Both fan tray LEDs should be green (online). A blinking green fan tray LED indicates booting. Verify that air is
flowing through the chassis. If a fan tray is not operating properly or air is not flowing through the chassis:
• power off the chassis at the remote power source.
• Ensure that all fan trays are properly installed.
• Verify the remote power source.
• If a fan tray LED remains unlit, replace the fan tray.
4 After you have verified the power and fan operability, power off the chassis to continue the installation process.
5 De-energize the Main Disconnect and flip the On-Off switch to the OFF position.
6 Verify that the LEDs are not lit.
Table 7-1. Power Supply LEDs
Status LED is ...
No AC power Unlit: No connection
Operational (On/Standby switch may be set to Standby) Lit: GREEN
Power Supply Failure Lit: AMBER
Table 7-2. Fan Tray LEDs
Status LED is ...
Booting Blinking: GREEN
Fault Detected Lit: YELLOW
Communication Failure Blinking: YELLOW
Operational Lit: GREEN
Loss of Power Unlit
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