The screen on the M6000 Icon can have up to 3 pixels out to be within specification due to LCD screen manufacturing. This is actually the case with any LCD screen- there are so many parts and the manufacturing process to get the screen so detailed is difficult, and cannot always achieve 100% accuracy. If the screen has more than 3 pixels out or if they are in an inconvenient place, you can call TC Electronics tech line for the M6000 at 818-262-3229 and see what can be done, though a replacement screen may very well have several pixels out. Again, this is just due to the difficulty of manufacturing LCD screens of this magnitude.