A&D EK-300EP Instruction Manual page 29

CAL errors
Cal e
-Cal e
Low battery error
lb0
Stability error
error1
Internal error (# = 2 to 6)
error#
If you cannot resolve an error or other errors occur, request service from the
store where you purchased the balance or from your local A&D dealer.
Calibration has been canceled because the calibration
weight is too heavy.
Calibration has been canceled because the calibration
weight is too light.
Check the weighing pan and the calibration weight.
To return to the weighing mode, press the MODE key.
The batteries are exhausted.
Stop using the balance immediately and replace all four
batteries with new ones
The weight value is not stable and the balance cannot
perform the operation
ZERO/ON:OFF or TARE are pressed.
Prevent vibration and drafts from influencing the balance.
Press the MODE key to return to the weighing mode.
The balance has detected an error in the internal
processing.
Remove the object from the pan. Turn the power OFF,
and ON again.
If the error persists, request service.
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when keys such as