Adam Equipment pgw series User Manual page 41

Poor Linearity
OTHER PROBLEMS:
Cannot calibrate
Calibration weight
motor does not stop
RS-232 not working
Display dark, keys
beep
© Adam Equipment Company 2007
Usually a mechanical
problem
Electronic Problems
Zero shifted more
than allowed
Calibration timeout
Doesn't print
Display contrast poor
Cable unplugged or
damaged
*To be carried out by authorised technicians only.
Re-check repeatability
*Inspection of the flexures for damage
or loose hardware may be required
*Use the Linearity Function in the
service menu to reset linearity
*A problem in the analogue circuit board
or power supplies can cause poor
linearity. Make sure all mechanical
problems have been eliminated first
*Check all flexures for damage
*Reset dealer calibration
*Verify linearity and repeatability
*The balance may be unstable. Verify
stability as above.
*Check the cables to the motor, try
plugging the balance into the power
again
*Look for friction in the calibration
weight movement
*Check the opto-coupler that controls
the motor position.
Check parameters match the device
connected
Verify cable is correct
*RS-232 circuits damaged
*Check the cables to the display
*Replace the display which could be
damaged
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