Salter Brecknell 7840 - Manual (Page 35)

Model 7800 Family Weight Classifiers User’s Manual 35
Perform the following steps in the order pre-
sented until the described problem is corrected. If
the problem cannot be corrected, contact your
Weigh-Tronix service provider.
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 the power supply.
3. Replace the display board.
4. Replace the main board.
Missing or extra segments on display
1. Replace the 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 off, remove all items from the platter,
and then power on 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.
Troubleshooting