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19
TITLETROUBLESHOOTING
After all the symbols on
display illuminate, a “ ”
mark is displayed.
M
A “0 0” mark is displayed.
Backlighting of display
is not turned on.
What to check How to correct
Nothing is displayed
even after I pressed
the switch.
Is the battery at?
Replace the battery
with a new one.
Place the battery in the
correct position.
Are the polarities of
battery (+ and -) wrong?
Replace the battery
with a new one.
The battery is at.
Replace battery.
Low battery.
Even after I insert the
unit in the ear, the “0”
mark is not displayed.
Replace the probe
cover with a new one.
Is the probe cover
dirty?
Clean the infrared sensor
with a cotton swab.
Is the infrared sensor
dirty?
Remove the earwax
with a cotton swab.
Is your ear stuffed with
earwax?
If you insert the unit in
the ear and press the
switch, you can
measure in 1-second
mode. However, you
cannot use the
“Directional Mode” in
this condition.
The temperature of
the main unit is 34°C
(93.2°F) or above.
Trouble
A “PC” mark is displayed.
Attach the probe cover,
then measure.
Did you forget to attach
the probe cover?
M
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