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x900 Series Switch and SwitchBlade
LED
Fault
CF
20
®
x908
State
Description (cont)
Red
The switch or management software is
malfunctioning.
Red flashing The following flash sequences indicate a hardware-
related fault. After sequences of two or more flashes,
the LED stops briefly, then repeats the sequence. If
multiple faults occur, the LED flashes each sequence in
turn, stops briefly, then repeats the sequences.
1 Flash
One or more heatsink fans has failed or is operating
below the recommended speed.
2 Flashes
For SwitchBlade x908 switches, one or both of the
chassis fans are not installed, or the fans are operating
below the recommended speed.
3 Flashes
For AT-9924T, AT-9924SP, AT-9924Ts, x900-24XT,
x900-24XT-N, and x900-24XS switches, the ability to
monitor temperature and fans has failed, and it cannot
report whether they are in the supported ranges.
4 Flashes
For switches running the AlliedWare Plus operating
system, a XEM failed to initialise or is incompatible.
6 Flashes
The switch's temperature has exceeded the
recommended threshold.
Slow
The SDRAM (DIMM) has not been detected. Does
flashing at
not apply to AT-9924Ts, x900-12XT/S, x900-24XT,
startup
x900-24XT-N, x900-24XS, and SwitchBlade x908
switches.
Rapid
The SDRAM (DIMM) is not compatible with the
flashing at
switch. Does not apply to AT-9924Ts, x900-12XT/S,
startup
x900-24XT, x900-24XT-N, x900-24XS, and
SwitchBlade x908 switches.
Green
The CompactFlash memory card is active and should
flashing
not be ejected. The card can be safely ejected when
the LED remains off. Valid for AT-8948, x900-48FE,
x900-48FE-N, x900-48FS, AT-9924T, and AT-9924SP
switches.
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