The diagnostics section is intended to give qualified service personnel a starting point to identify problems. It is neither all-encompassing nor can it pinpoint exactly the problem and may indicate problems which do not exist. It is not a substitute or replacement for accurate diagnosis and repair by a technician.
To view diagnostics on any tab press the green button on the toolbar (top center). The popup window will display comments specific to the tab and reading currently displayed.
Errors on any reading are indicated by the "E" icon badge at the top and on each tab. "L" or "H" means the particular value is low or high.