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Thermo Fisher Scientific

PGNL error in optics board control


Boards degraded; PGNL error; Optics board control table shows LensObjMainMiddle error


Titan Krios G3


These are possible resolutions for the issue:

  • Replace the Fuse


These are possible causes for the issue:

  • Fuse to the PGNL defective


PGNL shows error and we do the follow actions in the troubleshooting

  1. Re sit the PGNL for several times to avoid the contact issue--→issue not fixed
  2. We measure the impedance of the obj--it is normal
  3. Do coil calibrations--→ issue not fixed
  4. Replace the PGNL with a new one ---→ issue not fixed
  5. Check the power to the PGNL: The fuse to the PGNL is defected. And issue fixed when we replace it with a new one.



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