49
Possible Cause
Recommended Action
The back cover of
the device is open
Make sure the back of the
device is secure and the
turn lock is closed.
The back cover
button is
damaged, lost or
stuck
Take the back cover off,
check the back cover button
is present. Replace back
cover.
Possible Cause
Recommended Action
No sensor
detected
Ensure a sensor is
inserted into the device.
The sensor is
not correctly
inserted
Ensure the sensor is
correctly inserted by
pushing firmly in the
top connector.
Check the date
& time. If this
does not show
the current date
& time the real
time clock
battery may be
flat/empty
Change the date/time to
the current date/time
and charge the device
battery fully.
Sensor bias
battery
flat/empty
Charge the device
battery fully. This will
allow the sensor bias
battery to also charge
and re-bias the
sensor. Instructions
from the previous
step may also have to
be carried out.
Sensor connector
pins blocked
Remove the sensor and
re-insert to clear any
possible blockages.
