NCI 7620 Family User Manual page 35

Scale will not return to zero, or incorrect
weight is displayed
1. Press the ZERO key.
2. Check for interference of weighing platform.
3. Power off, remove all items from the platter,
and then power on the scale.
4. Recalibrate the scale.
5. Replace the QDT load cell.
Display shows unrecognized characters
1. Check software PROM for proper insertion.
2. Check display cables for the proper connec-
tion.
3. Replace the display board.
4. Replace PROM.
5. Replace the QDT load cell.
Display shows under "_ _ _ _" dashes
(Indicates that the scale is below zero or under
capacity.)
1. Verify that weigh platter is on the scale.
2. Press the ZERO key.
3. Power off, remove any items from the platter,
and then power on the scale.
4. Recalibrate the scale.
5. Replace the QDT load cell.
Display shows center " _ _ _ _ " dashes
(Indicates that the scale is outside zero capacity
of ±2%.)
1. Verify that weigh platter is on the scale.
2. Press the ZERO key.
3. Power off, remove any items from the platter,
and then power on the scale.
4. Recalibrate the scale.
5. Replace the QDT load cell.
Model 7600 Family PWC User's Manual
35