Cabletron Systems 9A000 manual Hardware Maintenance Procedures

Hardware Maintenance Procedures

WARNING! Failure to perform Step 2 can result in serious injury to the user or damage to the equipment.

2.Turn OFF the power switch on the front of the defective power supply.

3.Unplug and remove the power cord from the rear of the unit that corresponds to the failed supply. When facing the front of the unit, power supply 1 (on the left) corresponds to the top power cord in the rear.

4.Unscrew the two captive fasteners on the front of the unit using a straight blade screwdriver.

5.Pull forward on the handle to remove the sliding tray.

6.Unscrew the four nuts securing the inner tray to the sliding tray.

7.Lift the inner tray from the sliding tray.

8.Place the new power supply inner tray assembly in the sliding tray and screw down the four nuts securing the inner tray.

9.Check to see that the fuses on the new unit are of the same type and rating as the fuses in the replaced power supply. The fuses should be 4A, 240V.

WARNING! Failure to perform Step 10 can result in serious injury to the user or damage to the equipment.

10.Ensure that the power switch on the new power supply is turned OFF before inserting it into the enclosure.

11.Push the sliding tray back into the enclosure, being careful to align the card guides.

12.To ensure maximum safety, and to ensure that the connectors have seated properly, re-tighten the captive fasteners using a straight blade screwdriver.

13.Once the new supply is completely installed, re-insert and plug in the power cord, and turn the power switch to the ON position.

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