Description

If you can't see a fibre, the robot has dropped a fibre or the software has failed to do a centroid then below is a guide of how to recover.  It maybe that you should get guideness from an AF2 expert.

Try

The following steps act as a guide.

1. At ICL, type the command  <afbackillum on>.
2. Still at ICL type the command <afrecover> to find a fibre that has been lost. It may require 2 or 3 attempts to recover the fibre this way.
3. If after 3 attempts with <afrecover>, the fibre has still not been located, it is more than likely due to backillumination problems. It is felt safer and more reliable to enter engineering mode to recover the fibre. Use these commands carefully and do not carry out other commands unless you fully understand what you are doing.
4. Before leaving ICL window turn the backillumination on using <afbackillum on>, and then type <afviewf 79>
5. Open a Decterm and Telnet to AF2
6. Username: Autofib, password: *******,
7. OS9> eng
8. Eng> local
9. Eng> whichfibre. This tells you the last fibre it tried to load or setup, say in this example it is fibre 79
10. Eng> viewfibre 79.  Check on TV monitor if it is visible on the screen.
11. If it is visible, then enter "loadfibre 79 2" at the eng> prompt, and then proceed to "Resetting AF2" below if the fibre has been located correctly.
12. If it is not visible, then double check on the mimics for AF2 and Wyffos that you have back illumination on. If you still do not see the fibre it may be time to take the module off, so sleep the robot by entering "sleep" at the eng> prompt.
13. With the module off as described in "Removal of the Fibre Module", inspect the field plate and identify the problem fibre (fibre 79 in this example).
14. Carefully pull it back to the load ring, taking care not to move any other fibres. Once positioned in the load ring, refit the fibre module.
15. Enter "ringfibre 79" and then "loadfibre 79 2" at the eng> prompt. This informs the robot that the fibre has been placed in the load ring. The loadfibre command will then perform a spiral search around the expected position of the fibre.
16. If the fibre is found, then proceed to "Resetting AF2".
17. If the fibre still cannot be found, then the fibre should be disabled by typing "disablefibre 79" at the eng> prompt.  Proceed to "Resetting AF2"

1. Eng> resetlostflag
2. Eng> resetcurrfib
3. Eng> whichfibre.  Should reply no problems moving fibres if not you still have problems.
4. Eng> remote
5. Eng> quit
6. Now return to ICL and start Afsetup When you are ready to do so.

If you are still having problems then call the appropiate AF2 expert.