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www.tpcdental.com
Mirage Model 4000 Troubleshooting
Problem
Cause
Solution
Dental Chair does not move
up or down. Chair makes no
sound.
No power
Blown fuse
Power switch off
Blown transformer
Check power source
Check fuse
Check power switch
Check transformer voltage
12vac
Dental Chair will not move,
but makes a beep sound when
controls are pressed
Safety switch plate
Limit switch memory erased
Check safety plate
Re-program limit switches.
Refer to motions of limit
controls
Chair makes noise when
motor is running. Squealing
Chair is low on hydraulic
fluid
Re-fill hydraulic reservoir
Dental Chair does not go low
or high enough
Program limits
Re program limit switch
settings
Unable to program preset
position 1, 2 and 3
Chair is in program mode and
not operational mode.
Put chair in normal operation
mode. Change SW1 on Main
PCB
When I auto return the chair
with button 0 the chair goes
down and then raises about
3” once its down
Safety switch is being
tripped.
Check safety switch and area
around chair base.
My chair is on but there is no
control out of the touch pad
Touch pad is not connected
Touch pad is burnt out
Connect touch pad
Replace touch pad
My head rest does not stay in
the position that I put it in
Set screws in backrest are
loose.
Tighten set screws
Chair arm rest moves very
easley.
Screw is loose that holds
assembly together
Tighten screw
