TPF / TFB Series Floor Scale Service Manual
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6.7. Problems and Solutions
Problems
Possible cause
Common Solutions
OL or -------
Maximum capacity
exceeded. Load cell or
mechanics damaged.
Power supply faulty
Check the platform is installed
correctly. Try to turn on the scale
again. Do the calibration again
------- or NULL
displayed
Weight is 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 to turn on the scale
again.
Do the calibration again
Display is
unstable
Goods touching
somewhere. Air
variation or any
vibrations.
Temperature
changed . Load cell or
connections faulty.
Power supply faulty
Check the scale is in acceptable
location.
Check the connecters and load cell.
Check the power supply and battery
Weight value
incorrect
Calibration error.
Platform of load cell
touching somewhere.
Wrong weighing unit
Use accurate weight for to do the
calibration
Check the pan and load cell is
installed proper and touching.
Check the parameter settings.
Check the load cell and connecters
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.
Platform Corner
Weight different
Over load protection
stoppers or transport
locks are not removed.
Load cell or
mechanism damaged
Check the stoppers and locks under
the platform.
Use accurate weight for to do the
calibration
Check the load cell.
