The Jargon File (version 4.4.7, 29 Dec 2003):

field servoid
 /fee'ld ser?voyd/, n.

    [play on ?android?] Representative of a field service organization (see 
    field circus). This has many of the implications of droid.


The Free On-line Dictionary of Computing (30 December 2018):

field servoid

    /fee'ld ser'voyd/ A play on "android", a
   derogatory term for a representative of a field service
   organisation (see field circus), suggesting an unintelligent
   rule-driven approach to servicing computer hardware.

   [Jargon File]

   (2003-02-03)