Акку-Чек Перформа Нано - Manual (Page 27)

Troubleshooting Checks
5. Check if you followed the testing steps.
6. Check if the code number on the meter
display matches the code number on
the test strip container.
7. If you are still unsure of the problem…
Action
Read Chapter 2, “Testing Your Blood
Glucose” and test again. If you still have
problems, call Roche.
If they do not match, insert the correct
code chip into the meter and test again.
Repeat the test with a new test strip
and perform a control test. If you still have
problems, call Roche.
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