3Com 8800 SERIES, Installation Manual

Page: 53 / 62

Troubleshooting I/O Modules 53
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There is nothing blocking the vent of the chassis.
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The blanking plates are installed on the chassis where no module is inserted.
Table 33 describes fan assembly LEDs on the faceplate of the fan assembly.
Troubleshooting I/O
Modules
The Fabric has LEDs that indicate the status of the I/O modules , as described in
Table 34.
Table 35 shows the correspondence between the I/O module LEDs on the Fabric
and the slots in which these I/O modules are installed.
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If the ALM LED of the module remains green or green flashing, it indicates
there is something wrong with the module.
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During the process of resetting the module, the ALM LED remains on. After
normal booting, it is off.
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When resetting the module, if the ALM LED remains off, the module may not
be connected to the power source.
Check that the module has been properly installed in the correct position.
Table 33 Fan LEDs on the Fabric
LED Status Description
RUN On — The fan is working normally.
Off — The fan has failed or has not been installed.
ALM On — The fan has failed.
Off — The fan is operating normally.
Table 34 I/O Module LEDs
LED Status description
RUN Green or off — The module failed or has not been inserted.
Green flashing, slow — The module is working normally.
Green flashing, fast — The module is booting or is not
registered successfully.
ALM Off — The module is working normally or has not been
inserted.
Green or green flashing — The module failed or is not
working normally.
Table 35 I/O Module LEDs and Corresponding Slots
Chassis LEDs Slots
7-slot 0 to 4 2 to 6
10-slot 0 to 7 0 to 3 and 6 to 9
14-slot 0 to 11 0 to 5 and 8 to 13