Operation Manual

ID Name Class Severity Unit
45 Fan speed to high 0x0020 Error FOI
Description
This alarm is not actually emanating from the FOI but comes from the back
plane in the Master Frame Unit (MFU). This alarm indicates there is a problem
with the cooling fans in the MFU .
NOC Actions Dispatch field tech to replace fan tray.
Field Actions Replace the fan tray by removing the old one and installing a new unit.
ID Name Class Severity Unit
46 Temperature alarm 0x0020 Warning FOI
Description The temperature is high in the FOI board and has reached 85° C (185° F).
NOC Actions
Check if there are alarms from the fan tray. If there are no alarms check the
other modules reported temperature in the unit. If several boards have
temperature problems it is likely to be an environmental problem. If it is only
one card then this card may be the failure. Dispatch field tech to check the
ambient temperature/ventilation or replace board.
Field Actions Arrange for better ventilation if that is the problem or replace failing board.
ID Name Class Severity Unit
46 Temperature alarm 0x0020 Error FOI
Description The temperature is high in the FOI board and has reached 90° C (194° F).
NOC Actions
Check if there are alarms from the fan tray. If there are no alarms check the
other modules reported temperature in the unit. If several boards have
temperature problems it is likely to be an environmental problem. If it is only
one card then this card may be the failure. Dispatch field tech to check the
ambient temperature/ventilation or replace board.
Field Actions Arrange for better ventilation if that is the problem or replace failing board.
ID Name Class Severity Unit
47 Input voltage V1A low 0x0020 Error FOI
Description
Measured input voltage from backplane power connector A is too low. This is a
hardware fault either on FOI or DMF or a PSU.
NOC Actions
Check if any other cards in the same rack produce the same errors. If not this
may be just the FOI that has a problem. If other cards are reporting the same
issue then this is likely to be a PSU or backplane fault.
Field Actions
If just one board is alarming try to replace that board. If several boards are
alarming, attempt to replace the PSU. If that does not help replace the DMF
transferring all cards to the new DMF.
Troubleshooting
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