Error Code - NSK NLZ E Mode D'emploi

7 Troubleshooting
7-1

Error Code

If the motor stops due to an abnormality such as a malfunction, overload, overheat, etc. it automatically
checks the state of all components, detects the cause of the abnormality and displays a warning and error
code on the LCD panel of the control unit.
Warning
The handpiece has been used after the
HE1 checking result through Contra-Check was
either "OIL" or "NG".<Contra-Restriction> *
Overload or a risk of abnormal heating of the
HE0 motor detected. <Motor overheat prevention
function> *
* If you continue using the product, the motor will stop and error code "E8" will be displayed.
Error Code
E0 The motor shaft is locked.
E1 Detected over current in the circuit.
Detected a higher motor speed than the rated
E2
value.
E3 The motor drive IC generated an error signal.
E4 Detected high temperature of FET.
E5 Detected an overvoltage input to the unit.
E6 Detected an overvoltage of an LED light.
Detected a residual overvoltage when the
E7
motor was started.
A handpiece heat generation error was
detected.
E8
A motor heat generation error was detected.
E9 The motor does not start up.
EC Data cannot be saved to EPROM (Memory).
ED Signals from the sensor cannot be read.
An increasing handpiece heat generation error
EE
was detected.
EF Detected an under-voltage input to the unit.
When an error code is displayed, stop operation of all devices immediately and perform the remedy
indicated in the table above. If the error code appears again, turn the power OFF and then ON again
and check if the error code disappears. If the error persists, the product may be broken. Contact your
Authorized NSK Dealer.
Description of Warning
Description of error
Action (Check / Remedy)
Perform maintenance of the handpiece and then
check the handpiece by <Contra-Check>.
Avoid overloading the handpiece with heavy cutting,
etc. and wait for the warning to disappear.
Action (Check / Remedy)
Check if the handpiece is connected properly.
Avoid overloading the handpiece with continuous
heavy cutting, etc.
Press the foot pedal again to remove the error.
Allow the unit to cool down and try again
Check proper connection of AC adaptor and AC
power cord.
Check the LED light connection.
Wait for approx. 5 sec., then press the foot pedal
again.
If the error does not disappear, check if the motor
and motor cord are connected properly.
Perform maintenance of the handpiece, and then
check the handpiece by the Contra- Check.
Leave the motor until it cools down.
Check the motor connection.
Turn the power OFF and then ON again.
Check the connection of the motor to motor cord.
Perform maintenance of the handpiece, and then
check the handpiece by the Contra- Check.
Check proper connection of AC adaptor and AC
power cord.
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