Model 7815 Parcel Bench Scale User’s Manual
20
Troubleshooting
Perform each step in sequence to correct the
error condition. If the problem cannot be cor-
rected, contact your local Weigh-Tronix dealer.
No power (display is blank)
1. Check that the primary side of the cord is
plugged into the AC outlet, and the second-
ary side is properly connected to the power
jack on the back of the scale.
2. Replace power supply.
3. Replace the display board.
4. Replace the main board.
Missing or extra segments on display
1. Replace display board.
2. Replace the main board.
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 down, then power up the scale.
4. Recalibrate the scale.
5. Replace the load cell.
6. Replace the main board.
Display shows unrecognized characters
1. Check software PROM for proper insertion.
2. Check display cables for the proper connec-
tion.
3. Replace PROM
4. Replace the display board.
5. Replace the main board.
Display shows under “_ _ _” dashes
(Indicates that the scale is below zero or under capacity.)
1. Verify that the weigh platter is on the scale.
2. Press the
ZERO
key.
3. Power down, remove any items from the
platter, and then power up the scale.
4. Recalibrate the scale.
5. Replace the load cell.
Symptom and
Recommended Action
