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When trouble is found, please check the following again before consulting your dealer. If none
of these is applicable or the trouble is not remedied even after action has been taken, a failure
of this product is suspected. Contact your dealer.
13. Troubleshooting
If the motor handpiece stops due to an abnormality such as a malfunction, overload, break or
wrong use, it automatically checks the state of the control unit and detects the cause of the
abnormality and displays an error code on the LCD panel. If an error code is displayed, turn on
the power again and check whether the same error code is displayed. If the same error code is
displayed, take action by referring to the instructions provided in the “Check/Remedy” column
in the following table.
12. Error Code
Contact your dealer.
Remove load.
Contact your dealer.
Leave it as it is until it
cools down.
Contact your dealer.
Replace with new
batteries.
Contact your dealer.
Use within the range of
working temperature.
Replace the batteries. If
the heat generates from
the new set of batteries,
malfunction of the circuit
may be suspected.
Contact your dealer.
Replace the motor
handpiece or contra angle
head.
Malfunction of circuit
The motor handpiece is
locked. (at the time of
the auto reverse mode)
Malfunction of circuit
High load was
continuously applied to
the motor handpiece
for a relatively long time.
Malfunction of charger
The voltage of batteries
is too low (The life of
batteries.)
The voltage of batteries
is too high.
(Malfunction of circuit)
Outstanding the range of
working temperature or
break in the thermistor in
the battery section
The batteries generate
abnormal heat.
The operating life of the
motor handpiece or
contra angle has expired.
Check/Remedy Cause
Self-Check
error
Overcurrent
Overvoltage
Overheating of
motor
Charger failure
Low voltage of
batteries
High voltage of
batteries
Outside the
range of
working
temperature
Abnormal heat
generation from
batteries
Beyond the
upper limit
Below the lower
limit
Error Error code
During
rotation of
the motor
handpiece
At the time
of
Charging
Other
At the time
of
calibration
Recharge the batteries. If battery does
not fully discharge, charge will start. If
the battery fully discharge, change it for
new.
Insert batteries.
Contact your dealer.
Replace with new batteries.
If the temperature of batteries is less
than 0°C (32°F), the batteries are not
rechargeable. Charge the batteries in a
warm room. (Be careful about moisture
condensation.)
If the temperature of batteries is more
than 40°C, the batteries are not
rechargeable. Charge within the range
of working temperature. It is normal that
the batteries become a little bit warm
right after charging. If the batteries are
hot under normal operating conditions,
not right after charging, there may be
an abnormality. Contact your dealer.
Check that no battery other than
nickel-hydrogen battery is used.
Set correctly.
Remove metal on the charger.
See 12. Error Code.
Insert the power cord plug into the
outlet.
Insert the power cord jack into the inlet
on the charger.
Turn ON the power for the charger.
Contact your dealer.
Batteries have fully discharged.
(Has the handpiece been left
with batteries inserted for a
long time?)
No batteries are inserted.
The internal fuse has burnt.
Batteries have been completely
discharged.
The temperature of batteries is
low.
The temperature of batteries is
high.
The voltage of a battery is too high
The motor handpiece is not
correctly set to the charger.
Metal such as wire or safety pin is
placed on the charger.
An error code is displayed.
The power cord plug is not
inserted into the outlet.
The power cord jack is not
inserted into the inlet on the
charger.
The power for the charger is OFF.
The fuse has burnt.
The power is
not turned on.
The battery
charger does
not work. (The
CHARGE
animation does
not display)
The battery
charger does
not work. (the
power for the
charger is not
turned ON)
Solution Cause Problem
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