Accu-Chek Mobile User Manual page 52

2 Initial steps before testing
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The meter then runs a display check in which a black
and yellow checkerboard pattern of small illuminated
dots is displayed.
5 Check whether there are any irregularities in the
checkerboard pattern.
Some examples of irregularities in the checkerboard
pattern are shown in Chapter 9.
If there are irregularities in the checkerboard
pattern, results might not be displayed correctly.
In this case, ask your healthcare professional to
change the meter or contact Accu-Chek
Customer Care.
The meter automatically exits the display check after
about 2 seconds and then displays the number of tests
still available on the test cassette.
Afterwards the Main menu is displayed.