Adtran MX2800 M13 User Manual

MX2800 M13 Multiplexer User Manual

Acceptance Test Procedure, Appendix A

61200290L1-1G

    A-9

When the MX2800 is equipped with only a single Power Supply module, there is no protection against a 
failure of the module itself. However, the single Power Supply is capable of utilizing the 

 and 

power 

feeds to protect against a failure in one of the power sources feeding the shelf. To verify that the MX2800 
is properly utilizing the 

 and 

 power feeds, the following procedure is recommended:

1. With the MX2800 installed and operating normally, go to the fuse panel at the top of the bay and 

remove the fuse corresponding to the 

 power feed for the MX2800 shelf. Removing this fuse should 

have no effect on the operation of the shelf because the MX2800 is operating on the 

 power feed.

2. Reinsert the fuse for the 

 power feed.

3. Now, remove the 

 power feed fuse for the MX2800 shelf. Once again, there should be no effect on 

the operation of the shelf because the MX2800 is operating on the 

 power feed.

4. Reinsert the fuse for the 

 power feed.

When the MX2800 is equipped with two Power Supply modules and also wired to support dual power 
feeds, the shelf is protected against a failure of either of the Power Supply cards or a failure of one of the 
power sources feeding the shelf. Use the following procedure to confirm the operation of this fully redun-
dant configuration:

1. With the MX2800 installed and operating normally, remove the 

 Power Supply card (the one on the 

left). Removing this card should have no effect on the operation of the shelf because the MX2800 is 
operating on the 

 Power Supply.

2. Go to the fuse panel at the top of the bay and remove the fuse corresponding to the 

 power feed. 

Removing this fuse should have no effect on the operation of the shelf because the 

 Power Supply is 

running on the 

 power feed.

3. Reinsert the fuse for the 

 power feed.

4. Remove the fuse corresponding to the 

 power feed to the shelf. Doing so should have no effect on the 

operation of the shelf as the 

 Power Supply is operating on the 

 power feed.

5. Reinsert the fuse for the 

 power feed.

6. Reinsert the 

 Power Supply into the MX2800 chassis.

7. Remove the 

 Power Supply card (the one on the right). Doing so should have no effect on the 

operation of the shelf because the MX2800 is operating on the 

 Power Supply.

8. Go to the fuse panel at the top of the bay and remove the fuse corresponding to the 

 power feed. 

Removing this fuse should have no effect on the operation of the shelf because the 

 Power Supply is 

now running on the 

 power feed.

9. Reinsert the fuse for the 

 power feed.

10. Remove the fuse corresponding to the 

 power feed to the shelf. Removing this fuse should have no 

effect on the operation of the shelf as the 

 Power Supply is operating on the 

 power feed. 

11. Reinsert the fuse for the 

 power feed.

12. Reinsert the 

 Power Supply into the MX2800 chassis.