The Opti-Check is, generally, a trouble-free solid-state instrument. However, there have been a few issues reported that can easily be diagnosed and/or resolved in the field. Please use this guide to address some common Power / Battery / Screen Issues that may occur with the Opti-Check:
If the Opti-Check does not turn on, the screen remains unlit or the screen displays unusual characters, here are some troubleshooting steps to resolve the issue:
Replace the Batteries: Begin by replacing the existing batteries with new ones. Make sure the new batteries are installed correctly, observing the proper orientation (+ and -) as indicated in the battery compartment.
Inspect Battery Terminals: Check the battery terminals for any signs of degradation or corrosion. Corrosion can appear as a white, powdery substance around the terminals. Clean any corrosion gently with a dry cloth or a small brush. Also, ensure the battery compartment is free from any physical damage or issues caused by incorrect battery installation.
Check for Reversed Batteries: Verify that the batteries are inserted in the correct direction. Reversed batteries can prevent the device from functioning properly.
Physical Inspection: Ensure there are no physical damages to the battery compartment or any loose connections that could impede power flow.
Chemical Inspection: Ensure that previous spills in the sample compartment are wiped up and that the integrity of the housing and internal areas are free from damage. If there is severe degradation of the optical well sampling compartment, there may also be damage to the internal electronics.
Example Issue: If the Opti-Check turns on but powers off when the "READ" button is pressed, it may indicate an issue with the power supply or the internal circuitry. After checking and replacing the batteries, if the problem persists, inspect the battery terminals again and ensure there is no internal damage or loose connections within the unit.
By following these steps, you should be able to address common issues related to power and functionality. If problems continue, consider consulting with customer support for further assistance.
Press the "READ" button and view the sample compartment to see if a light appears. On Channel for PTSA or Fluorescein, it will have a blue light made more visible with a piece of paper in the sample compartment. The screen should display that reading is in progress.
For Reading and Calibration issues with the Opti-Check, use our flow chart to determine the appropriate next steps.
If you encounter problems, try the following:
Check the Sample Well: Ensure it is dry. Use a non-abrasive wipe or lint-free cloth to dry it if necessary. Do not use chemical cleaners of any kind to clean the interior.
Clean the Cuvettes: Wipe them with a lint-free cloth to remove any moisture on the outside.
Inspect for Scratches: Examine the cuvettes for any scratches and replace them if needed.
Check Solution Levels: Ensure the cuvette is filled at least 2/3 with the solution.
Remove Air Bubbles: Tap the bottom of the cuvette on a durable surface to purge any air bubbles that may cause interference.
Mark Cuvette Position: Mark near the top of the cuvette to ensure it remains in the correct position.
Calibration Standards: Calibration solutions for PTSA and Fluorescein should be new or within their expiration ranges. Store these solutions in a cool, dark place, away from sunlight, and at room temperature. Before use after longtime storage, simply invert the bottle several times to reconstitute the dye before use.
These steps should help address common reading and calibration issues with your Opti-Check.
