(2) The PMT unit assembly is stored in the instrument. Remove the three screws indicated
below, then screw two of the screws into the two M4 threaded holes indicated below
(hand tight is fine). Use the screws just inserted to pull the PMT unit assembly out from
the main unit. It is unnecessary to unplug the PMT unit assembly cable.
(3) Remove the M3 pan-head screws indicated below, then remove the PMT housing
assembly from the PMT unit assembly.