Nortel Networks BCM1000 - Manual (Page 262)

262 Chapter 18 Adding or replacing a cooling fan
P0607659 02
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 120 .
Figure 120 Business Communications Manager operational LEDs
Table 46 describes the possible states of the fan and temperature LEDs.
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.
1 If 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 238 . Otherwise,
skip to step 2.
2 Set up the BCM1000 for maintenance, as described in “Shutting down the system hardware”
on page 239 .
3 Attach one end of the grounding strap to your wrist and the other end to a grounded metal
surface.
Table 46 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.
Operation LEDs
Temperature Fan