Nordson Asymtek Spectrum S-920, Installation, Operation & Maintenance Manual

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8-6 Troubleshooting
8.4.5 Dispense Head Controller Connections and Functions
Table 8-5 Dispensing Head Troubleshooting
Symptom Possible Cause Recovery
CAN terminator not present Verify presence of CAN terminator.
Corrupt firmware or incorrect revision
CAN firmware may need to be flashed to the
correct or latest firmware. Contact Asymtek
Technical Support.
Failed Dispense Head Controller
Verify DHC power indicator LED’s for 3.3V, -
12V, and 12V are illuminated.
Dispense Head
Controller fails to initialize
during FmXP startup
200 Watt power supply has failed.
Power Indicator lights on DHC will not be
illuminated.
Height sensor has been adjusted or is
loose Adjust height sensor and tighten locking screw.
See
5.10 Adjusting the Height Sensor Probe .
Dispenses at wrong
Z-axis position
Nozzle/needle has been changed
Perform a ”Valve Offsets” or “Calculate Master
Offsets” routine in FmXP. For assistance, refer
to the
FmXP User Guide or Online Help.
Valve setup incorrect
Verify the valve type set in FmXP matches the
dispensing valve, and that the valve is plugged
into the pump connector on the Dispense Head.
No fluid dispensing
Valve Fatal Following Error (FFE)
1. Ensure valve does not have cured material
inside of it.
2. Exit FmXP, cycle power to the machine,
and retry.
3. PID parameters are not correct. Contact
Asymtek Technical support for correct PID
parameters for the particular pump being
used (applicable to the DV-7000, DV-8000,
and DP-2000 only).