42
14. Problems
Problems
Possible cause
Common Solutions
Display is blank.
No self test
Mains power is turned off.
Power supply faulty or not
plugged in. Internal battery
is not charged. On/Off
switch problem
Check power connection to the scale and
that the on/off switch is working.
Check the voltages (on the power labels).
Blank display after
self test
Pan not installed.
Unstable weight, load cell
damaged
Check the pans are installed correctly. Try
turning on again.
OL or -------
Maximum capacity
exceeded. Load cell or
mechanics damaged. Power
supply faulty
Check the platform is installed correctly. Try
turning on the scale again. Re-calibrate
------- or NULL
displayed
Weight on the platform is
below permissible limit. Pan
not installed correctly.
Power supply faulty.
Load cell or mechanism
faulty
Check the platform is installed correctly. Try
turning on the scale again.
Re-calibrate
Display is unstable
Goods touching
somewhere. Air variation or
vibrations. Temperature
changed. Load cell or
connections faulty.
Power supply faulty
Check the scale is in an acceptable
location.
Check the connectors and load cell.
Check the power supply and battery
Weight value
incorrect
Calibration error.
Linearity error.
Platform of load cell
touching somewhere.
Wrong weighing unit
Use accurate weight for calibration and
linearity.
Check the pan and load cell is installed
properly and touching.
Check the parameter settings.
Check the load cell and connectors
Can not use full
capacity
Over load protection
stoppers or transport locks
are not removed.
Parameters are set
incorrectly.
AD problem.
Load cell or mechanism
damaged
Check the stoppers and locks under the
platform.
Check the weighing unit and parameter
settings.
Check the load cell.
Not Linear
Over load protection
stoppers or transport locks
are not removed.
Linearity error.
Load cell or mechanism
damaged
Check the stoppers and locks under the
platform.
Use accurate weight for calibration and
linearity.
Check the load cell.
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