Accu-Chek Aviva Owner's Booklet page 74

An error occurred during the test.
Discard the test strip and repeat
the test. See Chapter 1,
"Understanding Your New
System."
Not enough blood or control
solution was drawn into the test
strip for measurement or was
applied after the test has started.
Discard the test strip and repeat
the test.
The code key is from an expired
lot of test strips. Ensure the code
key number matches the code
number on the test strip container.
Make sure the time and date in
the meter are correct.
Chapter 5: Maintenance and Troubleshooting 72
Blood or control solution was
applied to the test strip
before the flashing blood drop
symbol appeared on the
display. Discard the test strip
and repeat the test.
An electronic error occurred
or, in rare cases, a used test
strip was removed and
reinserted. Turn the meter off
and on or take the battery out
for 10 seconds and reinsert it.
Perform a blood glucose or
control test. If the problem
persists, call the ACCU-CHEK
Customer Care Service
Center at 1-800-858-8072.