220-801 · Question #155
A user has purchased a new touch screen tablet and is reporting that the touch interface is extremely inaccurate and almost unusable. Which of the following actions should a technician take FIRST to…
The correct answer is C. Calibrate the touch interface. When a touch interface is inaccurate, calibration is the correct first troubleshooting step because misalignment between the digitizer and display is the most common cause.
Question
A user has purchased a new touch screen tablet and is reporting that the touch interface is extremely inaccurate and almost unusable. Which of the following actions should a technician take FIRST to resolve the issue?
Options
- AReturn the tablet to the manufacturer
- BGive the user a stylus to use
- CCalibrate the touch interface
- DVerify touch interface connectivity inside the screen
How the community answered
(62 responses)- A2% (1)
- B3% (2)
- C95% (59)
Why each option
When a touch interface is inaccurate, calibration is the correct first troubleshooting step because misalignment between the digitizer and display is the most common cause.
Returning the tablet to the manufacturer is a last resort and skips all basic troubleshooting steps, making it inappropriate as a first action.
Providing a stylus is a workaround that does not resolve the underlying inaccuracy and does not fix the reported problem.
Touch screen inaccuracy on a new device is most often caused by an uncalibrated or poorly calibrated digitizer, where the software mapping between touch input and screen coordinates is off. Calibrating the touch interface corrects this mapping through the OS calibration utility and should always be attempted first before any hardware investigation or replacement, following the principle of starting with the simplest solution.
Verifying internal connectivity by opening the device is an invasive hardware step that should only be considered after software-level troubleshooting has failed.
Concept tested: Touch screen calibration as first troubleshooting step
Source: https://support.microsoft.com/en-us/windows/calibrate-your-screen-in-windows-ba1061ea-5a3a-cce7-0f65-f63b7e9f12f5
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