198 Chapter 17 Adding or replacing a cooling fan
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Tro ubleshooting f an ope r a tion

There are two LEDs on the front of the BCM 1000 and one on the fron t of the expansion cabinet
that can be used to assess f an func tion. Refer to Figure 103.
Figure 103 Business Communications Manager operational LEDs
Table 42 describes the possible states of the fan and temperature LEDs.

Removing a fan from the BC M1000

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 Unif ied Manager, shut down the syste m using the Shutdown
command. For details refer to “Shutting down the system software” on page 168 . Othe rwi s e,
skip to step 2.
2Set up the BCM1000 for maintena nce, 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.
Tab le 42 Fan an d 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.
Operation LEDs
Temperature Fan