8.1
Symptom Cause Action
Probe fails to
power up (no LEDs
illuminated or fails
to indicate current
probe settings).
Dead batteries. Change batteries.
Unsuitable batteries. Change batteries.
Batteries inserted incorrectly. Check battery insertion/polarity.
Batteries removed for too short a time
and probe has not reset.
Remove batteries for a minimum
of 5 seconds.
Poor connection between battery
cassette mating surfaces and
contacts.
Remove any dirt and clean the
contacts before reassembly.
Probe fails to
switch on.
Wrong transmission mode selected. Reconfigure transmission mode.
Dead batteries. Change batteries.
Unsuitable batteries. Change batteries.
Batteries inserted incorrectly. Check battery insertion/polarity.
Optical/magnetic interference. Check for interfering lights or
motors.
Transmission beam obstructed. Check that the OMP40-2 and
receiver windows are clean and
remove any obstruction.
Probe out of range/not aligned with
receiver.
Check alignment and if receiver
fixing is secure.
No receiver start signal. Check start signal by reviewing
receiver start LED.
Refer to relevant user’s guide.
Fault-finding