NCR 7872 Series - Correcting Scale Problems

2-6 Chapter 2: Operation
Correcting Scale Problems
Problem Possible Cause Corrective Action
Any Scale
Error or
Problem
Debris and trash
under Top Plate
Remove the top plate and thoroughly clean out all debris
and trash.
Error code
5---- displays
Scale drift Verify that nothing is on the scale. Lift the Top Plate and
verify that no objects are under it. Reseat the Top Plate
and push Scale Zero button. If error code persists, have
unit repaired.
Error code
4---- displays
Possible scale error Press Scale Zero button and retry. If error code persists,
have unit repaired.
Error code
4---- displays
Slight vibration to
scale when
calibrating
Calibrate scale, being sure not to permit any external
scale movement while the weights are on the scale.
Scale display
is blank
Top Plate is being
prevented from
moving down.
Remove interference around edge of Top Plate and
checkstand.
Remove any foreign objects from under the Top Plate.