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:
❑ power supply
❑ maintenance terminal
❑ processor
(use the PC when testing
(back up the system programming)
MLX modules)
2
Check the error logs
3
Resolve any processor problems
I
4 Busy-out or reset the module
5 Run the Internal Loopback test
errors
6
Check the error logs
errors
7
Run the BchLoopback test
for MLX modules only
errors
8
Run the CSU Loopback test
for 100D modules only
errors
9 Replace the module
10 Restore the module
Figure 4-6. Module Test Process
Record the errors on
the repair tag and
continue with the
next step.
4-34 Control Unit Problems