89
[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
Check following before requesting repair
Problem
Possible Cause
Response
Reference
[5]15.
[5]16.
[5]3.
[5]15.
[5]3.
[5]9.
-
[5]16.
[5]3.
[6]4.
[6]7.
[6]8.
[5]8.
>> No power when
main switch is
turned on.
>> Seat
or
backrest does
not move
>> Backrest moves
when
foot pedal
is depressed
>>
Switched and instru-
ments do not work at all
>> Panel switches
do not work
properly
(cannot
changeover etc.)
>> Micromotor does
not rotate
>> Dentist’s
instrument
does not work
>> No suction or weak
suction for vacuum
syringe or
saliva ejector
1. Power Plug was come out
2. Blown fuse.
1. Emergency stop activated
2. Temporary malfunction due
to electrical noise etc.
1. Attempt to over-ride the
emergency stop
1. Interlock inside basin unit has
been activated
1. Pressing another switch
simultaneously
2. Another switch is being held
down
1. Fuse blown
1. Select others instrument
1. Cut filter or vacuum tank need
cleaning
2. Cut filter or vacuum tank are not
properly connected
(Connection is not tight enough)
1. Drain trap filter
needs cleaning
1. Sensor on surface needs
cleaning
Connect the plug rightly with socket.
Replace fuse
Remove obstacles etc. and cancel
emergency stop.
Turn OFF the main switch and switch
ON again.
Remove obstacles etc. and cancel
emergency stop.
Switch OFF the interlock switch.
Press only one switch once a time.
Check all switches on the panel.
Replace micromotor fuse (8A).
Ensure the instruments selection func-
tion at dentish’s switch panel monitor
display.
Clean filter or tank.
Connect all components properly.
Clean filter.
Clean filter.
>> Basin does not
drain properly
>> Auto filler does
not supply water