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 either AC200~240V,
50/60Hz or AC100~120V,
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℃.
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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