Nortel Networks manual Troubleshooting fan operation, Removing a fan from the BCM1000

198 Chapter 17 Adding or replacing a cooling fan

Troubleshooting fan operation

There are two LEDs on the front of the BCM1000 and one on the front of the expansion cabinet that can be used to assess fan function. Refer to Figure 103.

Figure 103 Business Communications Manager operational LEDs

Operation LEDs
Temperature	Fan

Table 42 describes the possible states of the fan and temperature LEDs.

Table 42 Fan and temperature LEDs on the server

LED Label	Description	Green LED On	Red LED On (Only)
	Temperature	Temperature is below threshold.	Temperature is in alarm status.
			One of the problems could be that one of
			the fans has failed.
	Fans	All installed fans are working	There is a problem with a minimum of
			one fan.

Removing a fan from the BCM1000

The BCM1000 can have one or two fans.

If the BCM1000 has two fans, before you shut down the system, determine which fan has failed.

1If you still have access to the Unified Manager, shut down the system using the Shutdown command. For details refer to “Shutting down the system software” on page 168. Otherwise, skip to step 2.

2Set up the BCM1000 for maintenance, as described in “Shutting down the system hardware” on page 169.

3Attach one end of the grounding strap to your wrist and the other end to a grounded metal surface.

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