User Manual

Height Sensor 10-13
Minor Troubleshooting
Table 10-1 Height Sensor Troubleshooting
Symptom Check Correction
Probe does not drop or
retract
Check probe function:
1. Push the probe up with
your finger.
If the green LED on
the side of the probe
fails to turn ON, the
probe is not working.
2. Verify that the probe moves
freely up and down.
If the probe sticks, it
may be clogged with
dispensing fluid.
1. Call a service technician.
2. Clean probe with an
appropriate solvent; if
unsuccessful, call a
service technician.
Needle hits substrate
Verify that the probe tip is lower
than the needle tip.
Adjust the probe height
(see Figure 10-4).
Perform Valve Offsets or
Calculate Master Offsets in
FmNT.
Call a service technician.