A&D UB-401, Instruction Manual

Page: 11 / 46

ENGLISH 10
Troubleshooting
Problem Probable cause Corrective action
Batteries are drained. Replace all batteries with new
ones. Nothing appears
in the display,
even when the
power is turned
on.
Battery terminals are not in
the correct position. Place the batteries with
negative and positive terminals
matching those indicated on
the cuff.
The cuff will not
inflate. Battery voltage is too low.
( , LOW BATTERY
mark, appears. If the
batteries are drained, the
mark does not appear.) Replace all batteries with new
ones.
The cuff is not fastened
properly. Fasten the cuff correctly.
You moved your arm or
body during the
measurement. Make sure you remain very still
and quiet during the
measurement.
The cuff position is not
correct. Sit comfortably and still.
Raise your hand so that the
cuff is at the same level as
your heart.
The device will
not measure.
Readings are too
high or too low.
If you have a very weak or
irregular heat beat, the device
may have difficulty in deter-
mining your blood pressure.
The value is different from
that measured at a clinic or
doctor’s office. See “3. Why measure blood
pressure at home” on page 8. Others
Remove the batteries. Place
them back in correctly, and try
the measurement again.
Note)
If the actions described above do not solve the problem, contact the dealer.
Do not attempt to repair the device yourself.