10
If the assembly isn’t done correctly, you may receive one of the following error
and warning messages. To correct, follow the instructions as indicated within the
message.
Error Message
Reason for Error
ERROR: Sensor is disconnected. Click here to
turn device off.
The meter is turned on without the sensor
module.
ERROR: Card was removed. Data may be lost
and card could be damaged. Click here to
close the window.
The storage card (microSD
™
) is removed
while the meter is powered on.
ERROR: Card was removed. Data may be lost
and card could be damaged. Click here to
close the window.
The meter is turned on with no storage card
in place.
ERROR: Card was removed. Data may be lost
and card could be damaged. Click here to
close the window.
A new card is inserted or when a card is
empty.
ERROR: Card was removed. Data may be
lost and card could be damaged. Click here to
close the window.
Inserting a card that has contents other than
the 3M
™
EM Eye Meter CTM048 files.
ERROR: Invalid memory card. Format or
replace it. Click here to close the window.
The card is not formatted to FAT32. Format-
ting is done using the PC.
ERROR!!! STACK OVERFLOWED Click here to
turn device off.
This is a fatal error. If it appears even after
resetting, please contact 3M.
Reset Button
If the 3M
™
EM Eye Meter CTM048 locks up or the
display freezes, press the reset button to restart the
meter. The reset button is in a small hole found near
the power supply jack. Use a paper clip to push the
button inside the small hole.