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C1572M (9/05) 53
INSTALLING OR REPLACING A POWER SUPPLY
Unless a backup power supply is ordered with the matrix bay, the unit is shipped from the factory with one power supply installed. A backup
power supply can be added to the matrix bay to provide power redundancy to the unit. If necessary, a power supply can be replaced.
Note the following:
• The CM9760-MXB uses the CM9760-MPS power supply (120 VAC, 60 Hz).
• The CM9760-MXB-X uses the CM9760-MPS-X power supply (230 VAC, 50 Hz).
• A power supply provides an audible alarm that operates in conjunction with the Fault LEDs located on the front of the power supply.
By default, the alarm is enabled. You can disable the alarm if desired. For additional information, refer to the Enabling/Disabling the Power
Supply Alarm section.
INSTALLING A BACKUP POWER SUPPLY
NOTE: You can install a backup power supply while the matrix bay is powered on. You do not need to turn off power to the unit.
To install a backup power supply, do the following:
1. Remove the blank plate from the unoccupied power supply slot.
2. Align the power supply in the mounting rails and then slide the power supply into the slot (refer to Figure 32).
3. Press firmly on the front of the power supply until it is firmly seated into the rear connector.
4. Tighten the two captive panel screws at the top and bottom of the power supply.
5. Plug the power cord into the power input receptacle of the power supply.
6. Plug the other end of the power cord into the power source.
7. Place the power switch of the power supply in the On (I) position.
Figure 32. CM9760-MXB Backup Power Supply Installation