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190 Chapter 8 Install or Replace a Cooling Fan
P0993133 03
Install an expansion unit fan
Use this procedure to install the fan in the Business Communications Manager expansion unit.
1 Place the fan in the expansion unit 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 expansion unit and attach the fan.
3 Connect the fan power supply cable to the hub board.
4 Replace the cover.
5 Restore the Business Communications Manager system to operation. For details, refer to
“Restart the System after Maintenance” on page 147.
The Business Communications Manager 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 platform base chassis.
b If the fan exhaust air flow is incorrect, remove the cooling fan (See “Remove a BCM200
cooling fan” on page 185) and re-install the fan in the correct orientation (this procedure).
7 This procedure is complete.
Warning: Protect the hardware components against damage from electro-static
discharge. Always wear a ground wriststrap before you handle components. Always place
the components in static-free container.
Note: Ensure the label of the new fan faces the back wall of the Business
Communications Manager expansion unit chassis. Airflow is out of the chassis as
indicated by the arrows imprinted on the fan.