3com 3C17502 User Manual

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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.

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

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 

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

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