Nortel Networks BCM1000 - Manual (Page 268)

268 Chapter 18 Adding or replacing a cooling fan
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Replacing a fan into the BCM1000e
Follow these steps to replace the fan in the BCM1000e.
1 Place the fan in the BCM1000e so that the label faces the back wall of the unit.
2 Align the screw holes in the fan with the screw holes in the BCM1000e and attach the fan.
3 Connect the fan power supply cable to the hub board.
4 Replace the cover.
5 Restore the unit to operation. For details, refer to “Restarting the system” on page 240 .
The Business Communications Manager system starts up when you connect the ac power cord.
This takes several minutes to complete.