Message What it means What to do
Customer Service 1 800 227-8862 57
If you tested in a normal or warm
environment, repeat the test
with a new test strip; see pages
25–27. If the error message
appears again, contact Customer
Service.
If you applied the blood incorrectly,
review pages 25–27 on blood
application and repeat the test
with a new test strip. If the error
message appears again, contact
Customer Service.
If the error message appears again,
contact Customer Service.
There may be a
problem with the test
strip. For example, it
may have been
damaged or moved
during testing.
or,
The sample was
improperly applied.
or,
There may be a
problem with the meter.
Error 4 information begins on previous page
Understanding error
and other messages
DCO_06344502A_OU2_OB_USe.qxd 3/13/07 11:52 AM Page 57
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