The power LED is not
on.
"1E" displayed
"2E" displayed
The
motor
does
not
run.
Make sure that the power cord
is correctly plugged.
Check that the fuse is blown.
Correctly plug the power cord.
Replace with a recommended fuse. If
the fuse is still blown again, then repair it.
Make sure that the power
switch is properly working.
Repair if the power switch is troubled.
Check that the motor cord is
plugged in proper condition.
Correctly plug the motor cord. If the
same error is continuously displayed,
replace the motor cord.
Troubles Check points Corrective actions
Make sure in the maintenance
mode that the "Hc" for hall
sensor check is in proper
condition.
If any trouble is found, it is possible
that either the motor cord is broken or
the motor sensor is troubled. Repair it.
Check that the collet chuck is
opened.
If opened, close the collet chuck. If the
same error is still displayed, then repair it.
"3E" displayed Check if the unit has been
excessively used under the
condition of too high load.
Restart running the unit after keeping
it stopped for about 10 minutes. If the
same error is still displayed, repair it.
"4E" displayed Make sure that the supply
power is AC200~240V,
50/60Hz.
Check if the unit is properly running
while the specified power is supplied.
If the same error keeps being
displayed, repair it.
"5E" displayed
"6E" displayed
"7E" displayed
Check if the unit has been
excessively used under the
condition of too high load.
Restart running the unit after keeping
it stopped for about 10 minutes. If the
same error is still displayed, repair it.
Check if indoor temperature is
too worm in a work place with
the control unit.
If too worm, move the control unit to
a location with the indoor temperature
of 0~40°C.
Make sure that the temperature
sensor is in good condition.
If troubled, repair the temperature
sensor.
Check if the collet chuck is
opened.
If opened, tighten it by turning the
chuck handle.
Check if the motor handpiece
shaft is rotated by fingers.
If not rotated while closed, the motor
handpiece spindle is troubled. Then,
repair it.
It is necessary to resupply the
power.
If the same error is still displayed,
repair it.
9.5 Troubleshooting
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