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[8]Troubleshooting
Use the chart below to solve operational problems.
Contact J.Morita Corp. or your local dealer if the problem cannot be solved
by following the chart below or for malfunctions and defects not mentioned
in the chart.
[8]Troubleshooting
Problem
Possible Cause
Response
1)Pug and socket inside plumb-
ing pit are not connected.
2)Blown fuse.
1)Emergency stop activated.
2)Temporary malfunction due to
electrical noise, etc.
Attempt to over-ride the
emergency stop.
Interlock inside basin unit has
been activated.
1)Pressing another switch
simultaneously.
2)Another switch is being held
down.
Fuse on motor’s printed circuit
board is blown.
Hand piece lock is activated.
1)Cut filter or vacuum tank need
cleaning.
2)Cut filter or vacuum tank is not
correctly connected. (Connec-
tion is not tight enough.)
Basin filter and Drain filter needs
cleaning.
No power when main switch is
turned on.
(Switch does not light up.)
Seat or back rest does not
move.
Back rest moves when
foot pedal is depressed.
Panel switches do not work
at all.
Panel switches do not work
correctly.
(cannot changeover, etc.)
Micromotor does not rotate.
Dentist’s instrument does not
work.
No suction or weak suction
for vacuum syringe or saliva
ejector.
Basin does not drain properly.
1)Connect plug and socket.
2)Replace fuse.
1)Remove obstacles etc. to cancel
emergency stop.
2)Turn main switch off and then back
on again.
Remove any obstacles etc. and re-
lease emergency stop.
Turn lock OFF.
1)Press only one switch at a time.
2)Check all switches on the panel.
Replace fuse.
See if hand piece lock is activated.
Release if necessary.
1)Clean filter or tank.
2)Connect all components properly.
Clean Basin filter and Drain filter.
Check this list before requesting repairs