American Weigh Scales CD-1000 - Manual (Page 4)

3. Press [M] key again.
4. The LCD will flash “CAL” followed by the required calibration weight
(ie. 500 for the CD-500, or 1000 for CD-1000). Add the required weight.
The display will show “PASS” then return to normal weighing mode.
5. Put away cal weight press [I/O] key to turn off scale, the calibration is
finished.
** Repeat this process if scale is still displaying incorrect weight.
Please check the availability of weights at the store from which you
have bought your scale.
V. TROUBLESHOOTING:
The primary reasons for inaccuracy or malfunction are low batteries,
incorrect calibration, overload or operating on an unstable surface.
Please keep this in mind and maintain and operate your scale property.
Display Elimination of errors
[lo] or [88888] Change the batteries.
[OUT2] Recalibrate the scale as shown above.
[O-LD] You are overloading the scale.
[O-LD] or [LLLLL] The delicate weighing load cells have been
damaged by misusing the scale (i.e. it was
shocked, dropped or overloaded). You can try
recalibrating the scale. If the load cell has not
been damaged too much it will work again after
recalibration.
[UNST] Use the scale in a more stable position.