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NCR 7870 - Page 96

NCR 7870
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5-10 Chapter 5: Calibration
Display Add Weight Remove Weight
Ready C-5.00 lb (2.500 kg) 5.00 lb. (2.500 kg)
Ready C-15.00 lb (5.000 kg) 10.00 lb. (2.500 kg)
Ready C-30.00 lb (10.000 kg) 15.00 lb. (5.00 kg)
Ready C-0.00 lb (0.000 kg) 30.00 lb. (10.000 kg)
Ready 0.00 lb (0.000 kg)
Note: Use the same kilogram weights for both 9.995 kg and 13.995 kg
scale units.
6.
Press Reset/Scale Zero button. Display will indicate Ready C 5.00
lb (or 2.500 kg).
7.
Place a 5.00 lb (or 2.500 kg) weight in center of Top Plate.
8.
Press Reset/Scale Zero button. Display will indicate Ready C 15.00
lb (5.000 kg).
9.
Add a 10.00 lb (2.500 kg) weight in center of Top Plate. Total
weight on scale should be 15 lbs. (5.00 kg).
10.
Press Reset/Scale Zero button. Display will indicate Ready C 30.00
lb (10.000 kg).
11.
Add a 15.00 lb (5.000 kg) weight in center of Top Plate. Total
weight on scale should be 30.00 lbs (10.000 kg).
12.
Press Reset/Scale Zero button. Display will indicate Ready C 0.00
lb (0.000 kg).
13.
Remove all weights.
14.
Press Reset/Scale Zero button. Verify display indicates Scale
Ready 0.00 lb (0.000 kg).
15.
Press and holdReset/ Scale Zero button. Record Cal and Par
values.
16.
The Cal value should be incremented by one, indicating that a
calibration has been performed. The PAr value should remain
unchanged.

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