Omron M6W Instruction Manual page 18

4. Troubleshooting and Maintenance
Problem
Nothing happens when you press the
buttons.
Other problems.
16
Cause
The batteries are empty.
The batteries have been inserted
incorrectly.
• Press the O/I START button and repeat measurement.
• If the problem continues, try replacing the batteries with new ones.
If this still does not solve the problem, contact your OMRON retail outlet or
distributor.
Remedy
Replace the batteries with new
ones.
Refer to section 2.1.
Insert the batteries with the correct
(+/ -) polarity.
Refer to section 2.1.