Asymtek Century C-721 Series, Operation Manual, Page: 113 / 164

Needle Sensor 11-5
Needle Sensor Troubleshooting
Table 11-1 Needle Sensor Troubleshooting
Symptom Possible Cause Recovery
During Setup routine, error
indicates that the tactile
sensor is already engaged.
Tactile sensor “hat” is stuck
in the down position.
See Tactile Sensor Error below.
LED does not come ON
during routine.
Needle Sensor malfunction. Call an Asymtek service technician.
LED is constantly ON. Dust in the sensor.
Clean sensor slots with a soft cloth or
by blowing air through them.
Needle jams too far into the
needle sensor slot. Height change beyond
capability.
Reru
n
Needle Sensor setup
.
Needle-to-Height Sensor
offset is inaccurate.
Fluid build-up on probe tip
caused inaccurate Height
Sensor calibration.
Clean the probe tip with a soft cloth
and recalibrate the Height Sensor.
Specifications for Needle Sensor
Size
159 x 100 x 21 mm
(6.25 x 4 x 0.813 in)
Minimum needle length 1.4 mm (0.125 in)
Minimum needle diameter 30 gauge
Accuracy
±
0.1 mm (
±
0.005 in)
Repeatability
±
0.051 mm (
±
0.002 in)