NCR RealScan 7872 Installation/Owner Guide
497-0415291 Release F
08/04
31 of 44
Correcting Scale Problems
Problem
Possible Cause
Corrective Action
- - - - -
Over Weight
1.
Remove some of the items from the
Top Plate.
2.
Remove any obstructions to Top Plate
movement.
1 - - - -
2 - - - -
3 - - - -
Out of range calibration
error
1.
Calibrate Scale.
2.
If error code persists, have 7872
repaired.
4 - - - -
Calibration Switch is
pressed for more than
three seconds
1.
Check for objects interfering with
Calibration Switch.
2.
Calibrate Scale.
3.
If error code persists, have 7872
repaired.
4 - - - -
Possible scale error -
internal scale connection
problem or unit does not
have a
scale
1.
Press Scale Zero button and retry.
2.
Verify unit is a scanner/scale.
3.
If unit does not have a scale, program
for scanner only (
Program Mode
,
Hex
3
,
Hex 0
,
Hex 4
,
Save and Reset
).
4.
If error code persists, have 7872
repaired.
5 - - - -
Scale drift
1.
Verify that nothing is on the Top Plate.
2.
Lift the Top Plate and verify that no
objects are under it.
3.
Verify that nothing is interfering with
Produce Guard movement.
4.
Push the Scale Zero button.
5.
If error code persists, have 7872
repaired.
6 - - - -
Failure to update
program parameters in
EEPROM
1.
Reset the RealScan 7872.
2.
Calibrate Scale.
3.
If error code persists, have 7872
repaired.
7 - - - -
Error reading program
parameters from
EEPROM
1.
Calibrate Scale.
2.
If error code persists, have 7872
repaired.
9 - - - -
Linearity problem
1.
Calibrate Scale.
2.
If error code persists, have 7872
repaired.
Scale display is
blank
Top Plate is being
prevented from moving
down.
1.
Remove any interference around edge
of Top Plate and checkstand.
2.
Remove any foreign objects from under
the Top Plate.
3.
Press Scale Zero button
Intermittent
Power is unstable
1.
Have 7872 repaired.
