Interlock Circuitry SediGraph III 5120 Service
2-20 Mar 2010
The X-ray tube (PN 510/57603/00) and its floating mounting system are the same type as used
in previous models.
The high voltage is connected to the X-ray tube by a High Voltage cable (PN 510/60838/00).
Cell movement is accomplished by sending pulses to a stepper motor which is coupled to a
drive screw, an anti-backlash device which moves the cell to the correct position for the
operation in progress.
The cell stepper motor (PN 510/60829/00) has the same characteristics as the 5100 stepper
motor - 1.8° per step delivered to the motor.
The anti-backlash nut (PN 511/25600/00) is designed to take up any misalignment of the drive
mechanism. The spring keeps a constant tension on both sides of the threads it engages, this
allows the cell assembly to start moving as soon as the first pulse is delivered.
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