AT&T 3.0 manual Module Test Process

Module Problems

Module Test Process

Figure 4-6 shows the module test process. Refer to it and the text that follows for the recommended approach to testing modules.

1

Check the equipment:	❑ maintenance terminal
❑ power supply
❑ processor	(use the PC when testing
(back up the system programming)	MLX modules)

2Check the error logs

3Resolve any processor problems

I 4 Busy-out or reset the module

5Run the Internal Loopback test

6Check the error logs

7

Run the BchLoopback test for MLX modules only

8

Run the CSU Loopback test for 100D modules only

errors

errors

errors

errors

Record the errors on the repair tag and continue with the next step.

9 Replace the module

10 Restore the module

Figure 4-6. Module Test Process

4-34Control Unit Problems