14
7800 Family User Instructions
4 Operation
4.1 Power Up Test Sequence
When the scale is first powered on, it will perform a test sequence. During this
sequence, the display will show the following:
l
The model number and the software revision level.
l
A numeric counting test for all segments of the display. During this test, a
test of Random Access Memory (RAM) and a test of Read Only Memory
(ROM) is performed.
4.2 Performing a Normal Weighment
If everything is OK, the display will show zero weight and the scale is ready for use.
1.
With the scale powered on, make sure the scale platter is empty and the display
is at zero. If it is not, press the
ZERO
key …
0.00
is displayed.
2.
Place an item to be weighed on the scale platter …
The scale will display the gross weight.
3.
Remove the item from the scale platter.
If RAM or ROM error is reported, you must press the
TEST
key to acknowledge the
condition. See Error Codes and Troubleshooting on page 35.
When first powered on, if the scale is outside the ± 10% zero window, center dashes
are displayed,
- - - -
If necessary, reapply power to reset the initial zero setting. Refer to Error Codes and
Troubleshooting on page 35 if the problem persists.
