Failure Causes And Countermeasures - Nakanishi Sonic Cutter ZERO Operation Manual

7 – 2

Failure causes and countermeasures

A malfunction? If you think that this is the case, please check the following again before you call for
repairs.
Symptoms
No vibration.
The vibration
stopped while I
was working.
Visual Checklist
Main power cord is not
plugged in.
The main power switch is in
the OFF position.
Main power cord breakage.
The control panel
is not illuminated.
Faulty main power switch.
Fuses are blown.
The ON / OFF key is in the
OFF position.
The LED on the
The handpiece plug is not
ON / OFF key
fully connected to the
does not light up.
Handpiece socket.
Disconnection of the cable.
Defects in the ultrasonic
The LED on the
transducer or controller.
ON / OFF key is
on.
Loose blade.
An abnormal load has
triggered the protective
function.
The output level of the UP
key is high.
The ERROR LED
Abnormal heat generation
is lit.
triggered the handpiece heat
protection function.
Loose blade.
Blade edge damaged, dull or
bending.
Cause
37
Trouble-shooting
Countermeasure
Plug the main power cord into
an outlet.
Turn the main power switch
to the ON position.
Replace the main power
cord.
Please return complete unit
for service.
Replace the fuses. If it gets
disconnected again for
unknown reasons, please
send it to us.
Turn the ON / OFF key to
ON.
Make sure the handpiece
plug is securely connected to
the handpiece socket.
Please return complete unit
for service.
Retighten the blade.
Reduce the cutting pressure
or working force applied to
the blade.
Use the DOWN key to lower
it slightly.
Turn the main power switch
off and let it cool for a while.
Retighten the blade.
Replace the blade.