MTI 421, Руководство пользователя, Страница: 20 / 24

16 User Manual | MTI 424, 423, & 421
TROUBLESHOOTING GUIDE
NOTICE/AVIS
For more information on this equipment, including circuit diagrams, parts and service manuals, and other descriptions,
please contact MTI.
Pour plus d’informations sur cet équipement, y compris des schémas de circuits, les manuels de service et pièces, et
autres descriptions, s’il vous plaît contacter MTI.
# SYMPTOM PROBLEM CAUSE SOLUTION
1 Chair will not function. Chair power cord is not plugged in. Verify power cord is securely
connected at both ends.
2 Chair will not function. Facility power receptacle problem. Check facility’s power receptacle
with a known working device of
same voltage specifications.
3 Chair will not function. Facility power receptacle problem. Check facility circuit breaker to
verify it is not tripped.
4 Chair will not function. Facility supply voltage is incorrect
voltage.
Verify voltage is per specifications
on chair serial number/product tag.
5 Chair will not function. Fuses have blown Verify fuses are not burnt. Replace
fuse(s) if necessary. See “Fuse
Replacement Instructions” on page
14.
6 Chair will not function or a
function is erratic.
Controls are not securely
connected.
Verify each control is securely
connected to the chair.
7 Chair will not function or a
function is erratic.
Circuit board isn’t functioning
correctly.
Contact Customer Service.
8 Lift function is slower than usual
and only goes up about halfway.
One of the lifting column motors
is not functioning or circuit board
isn’t functioning correctly.
Contact Customer Service.
9 Back, Tilt, or Lift functions will not
function.
Circuit board has disabled motor(s).
The controller may disable
individual motor(s) to prevent
motor damage in the event that
a failure in the circuit board
is detected or unusual motor
operation has occurred.
Reset circuit board. Unplug the
chair from power and wait one
minute and plug it back in.
Note: The back button on the 421
model chairs is non-functional.
10 Back, Tilt, or Lift functions will not
function.
Motor is not functioning or circuit
board isn’t functioning correctly.
Contact Customer Service.
11 The circuit board has to be reset
often.
Possible faulty circuit board. Contact Customer Service.
12 Swivel will not lock. Wiring, switch, and/or circuit board
is not functioning correctly.
Contact Customer Service.