Not sure of a good service tech out your way but an 0105 error indicates a problem with the tool carriage. This is what the manual says:
0105 Tool Carriage Connection Error
Machine fails to connect the Tool Carriage to the Head Carriage. Faulty tool carriage connection Loose Connection, lock assembly Fault of the Limit Position Initialize value. Limit Sensor does not work correctly or is
broken.
1) Check the mechanical Backlash in scan motor gear or drive wire.
2) Lock Position Adjustment
3) Limit Position and Cut Down Position Initialize
4) Limit Sensor check or replacement
We had this problem on the 300V in a shop I worked at several years ago and we had to replace the limit sensor and the encoder strip.
Hope this helps and good luck.