284 Chapter 23 Replacing or upgrading a power supplyN0060612N006061210 Loop the cables together and tie-wrap to the side of the power supply to remove P1, P9, P3,P7/8 excess cable length. Fold the cables to the rear of the main unit and secure with atie-wrap. Ensure the cables are tied far enough back so they do not interfere with the insertionof the base function tray.11 Attach the fan plug to the I/O card Fan #1 connection. Loop excess fan cable length under theI/O card.12 Insert the base function tray fully into the main unit. Ensure the base function tray does notinterfere with any cabling.13 Replace the main unit top cover. See “Installing the main unit top cover” on page 248.14 Press the power supply switch to the ON position (if applicable). Plug the BCM power cordinto an AC power outlet.15 Restore the BCM system to operation. For details, refer to “Restarting the system aftermaintenance” on page 234. The BCM system starts when you connect the AC power cord.Wait for the start-up process to finish.16 Monitor the Power LED on the base function tray. Refer to Table 18 on page 77.a If the BCM system does not power up, press the reset button on the base function trayfront panel.b If the Power LED is red, then the system generated an alarm. See “Resolving alarmconditions” on page 219.c If the Power LED is green, the system is operating normally.Removing a BCM400 standard power supplyUse this procedure to remove the standard power supply from a BCM400 main unit.To remove a BCM400 standard power supply1 Set up the BCM400 for maintenance (see “Performing a system shutdown” on page 233).2 Disconnect all cables from the front of the base function tray.Note: Verify the power supply cables are connected correctly and do not interfere withany internal components.Warning: Protect the hardware components against damage from electrostatic discharge.Always wear a grounded wrist strap before you handle components. Always place thecomponents in a static-free container.Warning: Power supply cable management is critical. Loose or incorrectly positionedcables can result in cable damage.
