Callan Unistar 200 console terminal logic board
installed in right-hand side of console

U1 is:
  Signetics
  82S181
  Callan label:
  280014A
U2 is:
  empty
U48 is:
  AMD
  AM2732DC
  Callan label:
  280010C
   TCL
U49 is:
  AMD
  AM2732DC
  Callan label:
  280011C
   TCL
U50 is:
  AMD
  AM2732DC
  Callan label:
  280012C
   TCL
U51 is:
  empty