Trouble Shooting - KERN FCE 3K1 Service Manual

6 Trouble Shooting

Power on
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Full Segments?
If no display, check battery /adaptor; connection between keyboard—main
board, battery/adaptor—main board.
If missing segments, check fixing of LCD frame, zebra connector under LCD.
↓
Display Zero?
If display [LO], check battery>7.5v, adaptor>9v.
If display [ E] , check internal count.
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Proper readout?
If unstable reading, check weighing plate, overload stopper, load cell and wires,
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.
↓
Normal operation.
FCE-SH-e-0910 7