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This test checks Scale operation with five, ten and fifteen pound weights.
1. Check that the display reads 0.00 lb. when at rest with nothing
on the weighing surface. (The Yellow LED is steadily lit).
2. Place a five-pound weight on the center of the weighing surface
and check that the display reads 5.00 lb.
3. Place an additional five pounds on the center of the weighing sur-
face and check that the display reads between 9.99 and 10.01 lb.
4. Place an additional five pounds on the center of the weighing sur-
face and check that the display reads between 14.99 and 15.01.
Remove the weights and verify that the display reads 0.00.
5. You have completed the Increasing-Load Test (Phase 1).
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The Shift Test checks to ensure that items placed anywhere on the weigh-
ing surface of the scanner/scale are weighed properly. Refer to Figure 5-3
when performing this test.
1. Place and remove in succession, a fifteen-pound load on the cen-
ter of each of the four quadrants (A, B, C, and D in Figure 5-2) of
the scanner/scale’s weigh platter. Verify that a reading of between
14.99 and 15.01 lb registers under load and that the display
returns to 0.00 between each load.
2. After verifying the accuracy of each quadrant of the weighing sur-
face, remove all weight from the scale. You have completed the
Shift Test.