Roche Accu-Chek Performa Manuel De L'utilisateur page 64

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Note:
If you see any other error screen, please call Roche.
The temperature is above
or below the proper range
for the meter. Refer to the
test strip package insert
for system operating
conditions. Move to an
area with the appropriate
conditions, wait five
minutes and repeat the
test. Do not artificially
heat or cool the meter.
The battery is almost out of
power. Change the battery
now.
The time and date settings
may be incorrect. Make sure
the time and date are correct
and adjust, if necessary.