101b error

Reach out to this company they may be able to assist 

Ozark Biomedical

101b is the software version that is displayed when the instrument first powers on. Unless the instrument fails to initialize by proceeding to the display test where it energizes all the points in the LCD and then zeros out, there is no issue with your pcb. Please let me know if there is any other issues you are having and I will be glad to assist you further. Thanks again for using MedWrench.