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.