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0913 IH-1619
TROUBLESHOOTING
WARNING! Make sure that only qualified
personnel perform inspection, troubleshooting
and part replacement.
CAUTION! Disconnect all power, including
external control power that may be present,
before servicing the frequency drive
controllers. WAIT for three (3) minutes for
the DC bus capacitors to discharge. The
frequency drive controller’s display and/or LEDs
are not accurate indicators of the absence of
DC bus voltage.
OpERATING ISSUE
CAUSES
RECOMMENDATIONS
Machine not powering on.
Main power is turned off.
Check that power is going to the scale. Verify that switch is
turned on.
Machine not plugged into 120VAC outlet.
Verify the voltage going to the scale matches the power
supply labels on the power module or scale.
Power supply faulty.
Internal battery not charged.
Film carriage foot engaged.
Remove obstruction from Film Carriage foot.
Film carriage malfunctioning.
FILM CARRIAGE SPEED dial not set high
enough.
Adjust potentiometer towards 100% to set speed.
Resistance of potentiometer not equal to
5K_ across.
Tighten wiring, replace dial if necessary.
The carriage limit switch lever arm is
obstructed.
Remove obstruction and/or clean limit switch head.
Microcontroller card inside electrical
enclosure not turned on.
Check and switch on the main circuit breaker.
Turntable is malfunctioning.
Turntable speed potentiometer dial not
set high enough.
Adjust potentiometer towards 100% to set speed.
Resistance of potentiometer not equal to
5K_ across.
Tighten wiring, replace dial if necessary.
Microcontroller card inside electrical
enclosure not turned on.
Check and switch on main circuit breaker.
The turntable motor is not running.
Tighten or replace motor wiring as necessary.
Check turntable for mechanical restrictions.
Replace microcontroller or turntable output relav.
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