Roche Accu-Chek Performa Manuel De L'utilisateur page 61

The meter is not coded or
the code chip is not inserted.
Turn off the meter and recode
it.
The test strips will expire at
the end of the current month.
Before the end of the month,
insert a new code chip from
a new box of test strips and
ensure the code chip number
matches the code number on
the test strip container. Make
sure the time and date in the
meter are correct.
The test strip is damaged.
Verify that the code number
on the test strip container
matches the code number
printed on the code chip
currently inserted in the
meter. Remove the test strip
and reinsert it, or replace it
if damaged. If the message
reappears, call Roche.
The code chip is incorrect.
Turn off the meter and insert
a new code chip. If this does
not fix the problem, call
Roche.
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