: Open the scanner glass and clean the white strip on the underside. This strip is critical for the scanner to calibrate its home position.

: Ensure the small reflective strip or mechanical switch at the far left side (home position) is completely free of dust. If the sensor cannot see the home mark, it triggers a scanner error. Summary Comparison of the Fixes Patch Method Best Suited For Difficulty Success Rate Firmware Flash Software loops, persistent system lockouts Tech Mode Reset Quick resets, no PC access available Mechanical Clean Grinding noises, physical carriage jams

If patched Samsung drivers still fail, use a :

Use high-quality surge protectors to eliminate voltage drops that trigger sensor signal corruption on boot.

Gently wipe the inside of the scanner glass.