Allied Telesis Switch AT-SBXPWRSYS1 User Manual download pdf (Page 199)

SwitchBlade x3112 Installation Guide

199

AT-SBxPWRSYS1 DC Power Supply

If you suspect a problem with the DC power supply, examine its LEDs. The

power supply is operating normally when the DC IN and DC OUT LEDs

are solid green and the Fault LED is off. Possible fault conditions and their

solutions are described here:

Fault Condition 1: If the DC IN LED is off, the power supply is not receiving

power, has overheated and been disabled, or has failed and needs to be

replaced. Try the following:

 Verify that the On/Off switch on the power supply is in the On

position.

 Verify that the DC circuit breaker is on.

 Verify that the positive and negative power wires are correctly and

securely connected to the terminal block on the power supply and

circuit breaker.

 Verify that the DC circuit break has power by attaching another

device to it.

 Verify that the power from the DC circuit break is within the

required levels of the power supply. Refer to “Power

Specifications” on page 216.

 If the chassis is still operating, use the SHOW PSU or SHOW PSU

ALL command from a local or remote management session to

determine if the power supply has overheated and shutdown.

Fault Condition 2: If the DC IN LED is solid green but the DC OUT LED is

off, the power unit is generating insufficient DC power. Replace the power

supply.

Fault Condition 3: If the Fault LED is solid amber, try the solutions in Fault

Condition 1. If they do not resolve the problem, replace the power supply.

Note

The power supply is hot swappable. If the chassis has two power

supplies and one of them fails, you do not have to power off the

operational power supply to replace the failed unit.

Fault Condition 4: If the LEDs on the power supply indicate normal

operations but the PSU LED on the active master control card is off or is

showing a fault condition, try the following suggestions:

 The control card may not be able to detect the DC power supply

because it is not running the most recent version of the

management software. For instructions on how to verify the

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Allied Telesis Switch AT-SBXPWRSYS1 User Manual Page 199