Hardware Problems; Pv Test Failed - Thermo Scientific iS5N Series User Manual

4
Troubleshooting

Hardware Problems

Hardware Problems

PV Test Failed

52 Nicolet iS5N Spectrometer User Guide
1. If the performance verification (PV) test fails, check the following and then rerun PV:
a. Make sure the iD1 accessory is installed correctly in the spectrometer sample
compartment and fully seated on the locator pins.
b. Make sure the C screen from the iS5N accessory kit is installed in the slot furthest to
the right inside the iD1 sample compartment.
c. Make sure the light beam is not blocked by a sample holder or sample.
d. Rerun PV taking care to install the correct polystyrene reference after the software
prompt (leave the C screen in the sample compartment during the polystyrene
measurement):
– For the iD1 accessory, use the polystyrene reference card from the iS5N accessory
kit.
– For the iD1H accessory, use the polystyrene reference cuvette shipped with that
accessory.
2. If PV fails again, take the following action depending upon which portion of the test
failed:
• If a noise level test failed:
– If the instrument is purged with dry air or nitrogen, make sure the purge is set to
the recommended flow rate. See
flow rate was set incorrectly, reset it, wait 5 minutes for the flow rate to stabilize
and rerun PV.
– If a noise level test fails again and there are exhaust fans nearby or other
equipment that is causing the table on which the instrument is sitting to vibrate,
move the instrument to a more stable location and rerun PV.
– If a noise level test fails again, choose Collect > Experiment Setup > Diagnostic
> Align, wait for spectrometer alignment to complete and rerun PV.
– If a noise level test fails again, make sure the source is working:
– Choose Collect > Experiment Setup > Bench and make sure the Source
option is set to "White Light."
– Choose Collect > Advanced Diagnostics. If the Source icon has a red slash,
replace the source. Otherwise, click the Source icon and check that the
source current and voltage are within specifications.
– If the source is on and the current and voltage are within specifications,
remove any sampling accessory from the spectrometer and put your hand in
the light beam. You should see a spot of yellow light that is about 1 cm in
diameter. If you don't see the light beam,
Setting Purge Gas Controls
replace the source
for details. If the
and rerun PV.
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