Trouble Shooting - KERN ECB Service Manual

6 Trouble Shooting

Power on
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Full Segments?
If no display, check batteries / adaptor, keyboard / overlay, connection between
keyboard—main board, batteries / adaptor—main board.
If missing segments, check fixing of LCD, zebra connector under LCD.
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Display Zero?
If display [ LO], check battery>7.0V.
If display [ E] , check internal count.
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Proper readout?
If unstable reading, check weighing plate, overload stopper, load cell and
environmental conditions and stable table.
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Correct reading?
If not accurate, perform internal calibration.
If cannot reach full capacity, check weighing plate, overload stopper, load cell
and internal zero point.
If always zero, check internal zero point. Internal calibration if necessary.
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Normal operation.
8 ECB/ECE-SH-e-0820