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Troubleshooting
NOTE: When an error reading is displayed, turn off the power switch for a few seconds and then turn it on again. If "5E" is dis-
played wait for about ten minutes. If the error reading re-appears, follow the Troubleshooting Chart below.
Trouble
Check Points
Power
Make sure that the Power Cord is correctly
plugged into the outlet and the control unit.
Lamp
Does Not
Check if the fuse is blown.
Light
Make sure Power Switch is working properly.
"1E"
Make sure Motor Cord is plugged in properly.
displayed
Check if proper motor port is selected.
"2E"
Check if the Collet Chuck is open.
displayed
Check if proper motor port is selected.
"4E"
The circuit of the Control Unit is defective.
displayed
Check if the Control Unit has been used at a
high load and for a long time.
"5E"
continues repair or replace the control unit.
displayed
Motor
Check for high workplace temperature.
Does
Check control air openings for blockage.
Not
Run
Temperature sensor is defective.
Check if the Control Unit has been excessively
used under a high load condition.
"6E"
displayed
Check if the Collet Chuck is open.
Make sure the shaft of the Motor Handpiece
can rotate freely.
The circuit of the Control Unit is defective.
"7E"
displayed
See if Foot Pedal Cord is properly plugged in.
Foot Pedal
Does Not
The Hand/Foot Selector Switch is set to "Hand".
Work
Foot Pedal still does not work.
Handpiece over-
heats or is noisy
The ball bearings are defective.
while operating at
no load
Make sure that the Collet Chuck is free of dirt.
Motor
The rotation speed is too high.
Vibrates
Excessively
and is
Check if the bur shaft is bent, or bur is out
Unusually
of round or unbalanced.
Noisy
Make sure that the ball bearings are in
good condition.
Caution: Repairs should be performed only by qualified personnel.
Corrective Actions
Correctly plug in the Power Cord.
Replace only with the recommended fuse. If
the fuse blows again, repair or replace the unit.
Replace the Power Switch.
Correctly plug in the Motor Cord. If error code
continues, replace the Motor Cord. Select proper motor handpiece port.
If open, close the Collet Chuck. If error code continues, repair or
replace the handpiece. Select proper motor handpiece port.
Repair or replace.
Turn off the Power Switch for about 10 mins.,
then restart the Control Unit. If error code
If too warm, move the Control Unit to a loca-
tion with an indoor temperature of 32~100ºF.
Unblock air opening.
Replace the sensor.
Press the Auto Cruise Switch or turn off, then
press the Motor On/Off Switch. If error code
continues, repair or replace Control Unit.
If open, close it by turning the Chuck Handle.
If it cannot be rotated with the chuck closed,
the spindle of the Motor Handpiece is defec-
tive. Repair or replace it.
Turn off the Power Switch for about 10 mins.,
then restart the Control Unit. If error code
continues repair or replace the control unit.
Plug in the Foot Pedal Cord correctly.
Set the Hand/Foot Selector Switch to "Foot".
Repair or replace it.
Repair the Motor Handpiece.
Thoroughly clean the Collet Chuck.
Reduce the rotation speed. Refer to
Allowable Rotation Speed chart.
Replace with a new bur.
Repair or replace the Motor Handpiece.
9
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