QVI Cobra DRS-300 - User Manual

How to troubleshoot a QVI Scanner Cobra that does not power up?

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  ericallenAug 15, 2025

  If the QVI Scanner's Cobra unit isn't powering up, there are several things to check: * Ensure the main power is on. * Verify the Cobra power cord is securely plugged into both the Cobra back panel and the main power source. * Try a different wall outlet or repair the current one, ensuring it meets the system's power needs. Also, reset the circuit breaker. * Test the power cord by swapping it with a known good one. * Confirm the parallel port is set to 'bi-directional' and properly designated as described in Section 2.

  

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Why does the sensor give inaccurate data on my QVI Cobra DRS-300?

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  Dustin HurstAug 17, 2025

  If the sensor on your QVI Scanner is giving inaccurate data, consider the following: * Adjust the step size. * Check the lenses for dirt and clean them if necessary. * Verify the sensor model and serial numbers in the Sensor Information box match the sensor on your system and adjust if necessary.

  

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What to do if the computer monitor does not turn on with my QVI Scanner?

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  Rachel MorganAug 21, 2025

  If the computer monitor isn't turning on, check these items: * Make sure the main power is on. * Ensure the monitor is connected to the main power source. * Try swapping the monitor with a known good one to rule out a faulty monitor.

  

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Why doesn't the sensor turn on in my QVI Scanner?

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  Brent ObrienAug 25, 2025

  If the QVI Scanner's sensor won't turn on or the laser indicator isn't lighting, try these steps: * Ensure the laser sensor cable connection is secure and tight. * Make sure the computer and the Cobra are both powered up.

  

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What to do if the sensor will not collect data on my QVI Cobra DRS-300 Scanner?

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  Keith HallAug 28, 2025

  If the QVI Scanner's sensor will not collect data, try the following: * Focus the sensor. * Ensure the laser sensor cable connection is secure.

  

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How do I fix an LCD screen that won't turn on with my QVI Cobra DRS-300?

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  Kimberly YoungAug 31, 2025

  If the QVI Scanner's LCD screen doesn't turn on when the Cobra is powered up: * Check that the LCD Screen Power cable is connected to the back of the Cobra and the top of the camera. * If the cable is connected, try swapping the LCD screen with a known good one to check for a faulty screen.

  

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Why won't the sensor arm move on my QVI Scanner?

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  colin27Sep 3, 2025

  If the QVI Scanner's sensor arm won't move, consider the following: * Move the arm in the opposite direction if it has reached its end of travel limit. * Ensure the Cobra is powered up.

  

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What causes my QVI Scanner to be unable to obtain readings?

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  Danielle MorrowSep 7, 2025

  If you are unable to obtain readings with the QVI Scanner, consider the following: * Tighten any loose laser sensor cable connections. * Check the sensor lenses for dirt and clean them if necessary. * If the issue persists, try swapping the sensor with a known good one to rule out a faulty sensor.

  

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How to fix a non-functional keyboard on QVI Cobra DRS-300?

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  David OlsonSep 9, 2025

  If the QVI Scanner's keyboard is not functional: * Check the connection between the keyboard and the computer. * Try swapping the keyboard with a known good one to rule out a faulty keyboard.

  

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