Intelligent Weighing Technology QHD+3 Service Manual page 26

Check battery and connect to charging.
Check the load weight is seated properly.
Check the load cell connections and connecters.
Incorrect value:
Calibration error.
Calibrate again with exact calibration mass weights.
Check the weight sample is lying proper and avoids touching the cover or
surface.
Check power supply and battery.
Check load cell connections and connectors.
Can not use scale full capacity:
Before weighing make sure zero indication is showing and scale is empty.
Check the weighing mode.
Check the load cell is fitted proper and touching housing or hitting
somewhere.
Calibrate again with exact calibration mass weights.
Load cell damaged. Check load cell connections and connectors.
Main PCB problem.
Battery not charging:
Mains voltage problem. Check the power supply voltage and adaptor voltage.
Charging circuit failure.
 Battery failure, check the battery connections
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