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Performing a factory restore on a J57 5 series refractometer.

Step-by-step instructions for restoring the instruments calibration to factory default.

Before starting, make sure the prism is clean and dry.

  1. Select Menu
  2. Enter passcode 123
  3. Select Enter
  4. Select Setup
  5. Select Service Calibration
  6. Enter the passcode 519
  7. Select Reload Factory Settings
  8. Select Yes
  9. Select Yes
  10. Select Continue
  11. Select Home
  12. Select Zero, follow the test and provide results.