Changing to spare af2pc

If there is serious suspect that the af2pc is to be faulty, the Linux system or the frame grabber card or the Galil motion controller it is recommended to complete swap to the spare af2pc.

This machine is fitted below the main af2pc. To do this the following steps have to be taken:

• Sleep the robot with: af2 sleep (if this is still possible, having trouble with the PC in the first place)
  

• Power off the instrument at prime:  Bring telescope down to AP3 and disconnect the power cable. This is important to do this first as the robot can move into the limit by gravity if the AF2 amplifiers are switched off before!
  

• Go into GHRIL and turn off AF2 amplifiers and AF2 Interconnect Module ICM1900    

• Shut down the af2pc. Use the computer screen and keyboard on the table. Click on the button left bottom corner and click shutdown this will stop AF2Server and power off the af2pc. If the PC does not respond at all, then just switch it off at the back.
  

• Now change the two 100 pin connectors at the back of the faulty af2pc to the spare af2pc.  Be careful when taking the connectors out and make sure they are properly seated when connected to the spare af2pc, as they are quiete delicate.
  

• Change the D-connector of the frame grabber card.

• Change the monitor, keyboard, mouse and the UTP network cable.
  

• Reboot the spare af2pc, this will make sure that the AF2Server is started on this machine and that it will get all necessary information from Taurus.

• Power on AF2 amplifiers and AF2 Interconnect Module ICM1900.

• Power on instrument at prime by reconnecting the power cable.
  

• On whtics type: af2 mimic  This should bring the AF2EngineeringMimic back up.

• Put in a fault report about the faulty af2pc.

Last updated 15nd May 2015 by RJP