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Chapter 8: Verifying the Hardware Operations of the Chassis
190
Using the LEDs to Verify the Chassis
After powering on the chassis for the first time and waiting a minimum of
two minutes for the line and control cards to complete the initialization
process, check the operational status of the various hardware
components by examining the LEDs, as explained in this procedure:
1. Check the LEDs on the power supplies:
AT-SBxPWRSYS1 and AT-SBxPWRPOE1 AC Power Supplies:
The power supplies are operating properly when the AC and DC
LEDs are solid green and Fault LEDs are off. If there is a problem
with a power supply, refer to “AT-SBxPWRSYS1 and AT-
SBxPWRPOE1 AC Power Supplies” on page 198 for
troubleshooting suggestions.
AT-SBxPWRSYS1 DC Power Supply: The power supply is
operating properly when the DC IN and DC OUT LEDs are solid
green and Fault LED is off. If there is a problem, refer to “AT-
SBxPWRSYS1 DC Power Supply” on page 199 for
troubleshooting suggestions.
2. Check the Power LED on the AT-SBxFAN12 module. The module is
operating normally when the LED is solid green. If the LED is off, the
fan module has a problem or failed. Power off the chassis and contact
your Allied Telesis representative for assistance. Do not operate the
chassis without a fully operational fan unit.
3. If the chassis has one control card, check its M/S LED. It should be
solid green. If the LED is flashing amber, the card is still initializing its
management software. If the LED is still flashing amber after another
minute, the card may have encountered a problem completing the
initialization process. Power off the chassis and replace the control
card.
Note
If all the LEDs on the control card are off, they may have been
turned off. Try pressing the eco-friendly button on the card to turn
them on.
4. If the chassis has two control cards, check the M/S LEDs on both
cards. The cards are operating correctly when the LEDs are green on
one card and amber or flashing amber on the other. If both LEDs are
flashing amber, the control cards are still completing phase 1 of the
initialization process. If neither LED changes to green after another
minute, the cards have encountered a problem that prevents them
from completing the initialization phase. Power off the chassis and
replace the cards.