To Remove A Bcm200 Cooling Fan; Removing A Bcm200 Cooling Fan - Nortel BCM200 Installation And Maintenance Manual

5 Restore the BCM system to operation. For details, refer to
maintenance" on page
The BCM system starts up when you connect the AC power cord. The start-up process takes
several minutes to complete.
6
Test the direction of the fan exhaust air flow to determine if the fan is correctly installed.
a
Hold a piece of paper or your hand close to the fan exhaust. A correctly installed fan blows
air away from the main unit. If you are testing two fans, cover one fan at a time with your
hand.
b If the fan exhaust air flow is incorrect, remove the cooling fan (see
cooling fan" on page

Removing a BCM200 cooling fan

Use this procedure to remove the cooling fan in a BCM200 main unit.
Warning: Protect the hardware components against damage from electrostatic discharge.
Always wear a grounded wrist strap before you handle components. Always place the
components in a static-free container.

To remove a BCM200 cooling fan

1 Shut down the system (see
2 Disconnect the BCM system from the AC power outlet.
3 Attach one end of the grounding strap to your wrist and the other end to a grounded metal
surface.
4 Remove the top cover from the main unit (see
248).
5 Disconnect the I/O card fan cable connection (see
Chapter 25 Replacing or installing a cooling fan
234.
326) and reinstall the fan in the correct position (this procedure).
"Performing a system shutdown" on page
BCM200/400 4.0 Installation and Maintenance Guide
"Restarting the system after
"Installing the main unit top cover" on page
Figure 185 on page
331
"Removing a BCM400
233).
332).