FARGO electronic Pro-LX Laminating Card Printer/Encoder - Manual (Page 50)

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Pro-LX Laminating Card Printer/Encoder User Guide (Rev. 5.0) 50
Resolving the Cover Open Error Message
Symptom: A Cover Open error is displayed when the cover is closed or the Rollers do not
operate (when the cover is open).
Step Procedure
1 Test the Sensor by following these steps.
a. Remove the Rear Cover.
b. Use a Digital Voltmeter to:

Attach the negative lead to ground.

Attach the positive lead to Pin 2 of J11 to test the Print Cover Sensor
operation.
c. Connect the positive lead to Pin 2 of J12 to test the Lam Cover Sensor
operation. Replace the Sensor if the voltages are incorrect.

Verify that the voltage reads 5 VDC with the cover closed.

Verify that the voltage reads 0.12 to 0.17 VDC with the cover open.