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16.1 TROUBLE-SHOOTING GUIDE.
BALANCE DOES NOT FUNCTION
Problems
The balance is dead
when power is applied
The display does not
turn on but the
calibration motor moves
when power is applied
The display stays on
the initial test screen
when power is applied.
Calibration weight motor
is on.
BALANCE WORKS BUT IS NOT STABLE
Balance is unstable by
a few divisions
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Possible causes
Power supply
failure
Power is getting to
balance, display is
not working
Unstable balance
Balance not
working correct
Power supply
Noise or vibration
from environment
Friction in
mechanics
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Suggestions
Check adapter is working
Check adapter is correct for the balance
Normal adapter is 18VDC, 830mA.
*Power supply circuit board failure
*Short circuit on any circuit board
*Display cables may be faulty
*Display module failure
*Check if balance is stable by using service
menu and view A/D values
Put draught shield over pan
Check power supplies
Check the balance is positioned correctly
to avoid vibration, wind or air movement, it
is on a solid table, It is not near sources of
heat or cool air,
Check balance with weights if problem
occurs when sample is used. Static
electricity on the samples can cause
drifting and instability.
Check the area around the weighing pan
for hair, dust, obstructions under the pan,
*A complete inspection of the mechanics to
look for sources of friction may be needed.
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