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Chapter 8: Troubleshooting 8-3
Scale Troubleshooting Chart
Note:
This information does not apply to the NCR 7870-4000 which
uses a Bizerba scale. For information on troubleshooting or servicing
an NCR 7870-4000 scale unit, refer to the Bizerba documentation or
contact the Bizerba representative.
Problem Possible Cause Corrective Action
Error code 5 - - - -
displays
Scale drift 1.
Verify nothing is on scale.
2.
Lift Top Plate and verify no
objects are under it.
3.
Push Reset/Scale Zero button.
4.
Power down/up unit.
5.
If error code persists, have unit
repaired.
Error code 4 - - - -
displays
Possible scale error 1.
Press Scale Zero button and retry.
2.
If error code persists, have unit
repaired.
Error code 4 - - - -
displays during
calibration
Slight vibration to scale
during calibration
Calibrate scale. Ensure there is no
external scale movement while
weights are on scale.
Scale display is
blank
Top Plate prevented
from moving down
1.
Remove any interference around
edge of Top Plate and
checkstand.
2.
Remove any foreign objects from
under Top Plate.
3.
Push Reset/Scale Zero button.
Intermittent error
codes
+12 VDC is unstable Have 7870 repaired.