Failure Causes And Countermeasures - Nakanishi Sheenus ZERO Operation Manual

Trouble-shooting
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.
checklist
Main power cord is not
plugged in.
The main power switch is in
the OFF position.
The control panel Main power cord breakage.
is not illuminated.
Faulty main power switch.
Fuses are blown.
The ON / OFF key is in the
OFF position.
The handpiece plug is not
fully connected to the
The LED on the
Handpiece socket.
ON / OFF key
does not light up.
Faulty foot switch.
Disconnection of the output
cord.
The LED on the
Defects in the ultrasonic
ON / OFF key is
transducer or controller.
on.
An abnormal load has
triggered the protective
function.
The output level of the UP
key is high.
The ERROR LED
is lit Abnormal heat generation
. triggered the handpiece heat
protection function.
Loose tools.
Tool edge damage or
bending.
cause
44
countermeasure
Plug the main power cord into
an outlet.
Turn the main power switch
to the ON position.
Replace the main power
cord.
Please send it to us.
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 send it to us.
Do not apply more than
necessary working pressure
to the tip tool.
Use the DOWN key to lower
it slightly.
Turn the main power switch
off and let it cool for a while.
Retighten the tool.
Replace the tool.