Cabletron Systems 9A000 manual 5-11, Hardware Maintenance Procedures

Hardware Maintenance Procedures

5.Pull forward on the power supply’s handle (located below the power switch and AC plug) to remove it from the chassis.

6.Set the failed supply aside and prepare to install the new one.

WARNING! Failure to perform Steps 7 or 8 can result in serious injury to the user or damage to the equipment.

7.Ensure that the power switch on the new AC power supply is turned OFF before inserting the supply into the metal enclosure.

8.Check to see that the fuses on the new unit are rated at 15A, 250V.

9.Set the supply on the guide rails in the enclosure so that the sup- ply is properly aligned in the slot. Position the supply so that the rear connectors are on top.

10.Once the rails are properly aligned, push on the handle on the front of the supply to slide it back into the chassis. Press firmly to ensure that the connectors on the rear of the supply have mated with those on the backplane.

11.To ensure maximum safety and to ensure that the connectors have mated properly, tighten the two captive fasteners on the front of the supply using a straight blade screwdriver.

12.Once completely installed, you may reconnect the AC line and turn the power switch to the ON position.

13.After a second or two, the PWR OK LED on each supply illumi- nates green, indicating that the supply is functioning properly.

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