TA Instruments DSC Autosampler CE - Page 178

Diagnostics
6–46 TA I NSTRUMENTS DSC A UTOSAMPLER CE
If you are calibrating the Autosampler
CE, press the RESET SAMPLER key
and recalibrate the current position
whenever you receive a motor step
error.
Theta step error
+xxxxx steps
(or xxxxx steps)
Problem: The q-axis motor had to execute the
wrong number of steps to complete a
movement. The number is positive
when the movement is in the counter-
clockwise direction, and negative for
the clockwise direction. Small numbers
of lost steps (<25) indicate a loose or
worn gear, whereas frequent errors
involving larger numbers indicate that
the motor is binding.
Solution: The Autosampler CE immediately
corrects for motor step errors, so this
error condition usually does not require
any operator action. If your Autosam-
pler CE starts showing step errors
with increasing frequency, however,
you should have the unit serviced.
If you are calibrating the Autosampler
CE , press the RESET SAMPLER
key and recalibrate the current position
whenever you receive a motor step
error.