American Weigh Scales (AWS) ONYX - Manual (Page 6)

Tap the key again. The display will show “Zero” followed •
by “0000”(±2).
Place a 2000g weight onto the scale (not included). The
•
display will show “CAL1” then the ISN number.
Now place a total of 5000g onto the scale (not
•
included). The LCD will show “CAL2” then “5000g”.
Calibration is complete!
•
IX. Troubleshooting
Problem: The display shows:
Solution: The scale is overloaded. Remove the excess
weight.
Problem: The scale is weighing inaccurately.
Solution: Check the battery power. Lower voltage can
cause inaccurate readouts. Otherwise try re-calibrating the
scale. (see Section VII)