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PROBLEM #1 (continued)
1.
Chair or lift will not operate (continued).
TESTING PROCEDURE
CORRECTIVE ACTION
PROBABLE CAUSE
(14. continued)
NOTE: If the reading
Replace the
automatic
varies from "0"
control board.
to "50k" + 10 percent
as the dials
are rotated,
the automatic
Replace the
control is
programming
faulty. If the
dials wiring
ohmmeter reads
harness.
"0" on any of
the potenti-
ometers and
does not change
when rotating
the dials, a
short circuit
is indicated.
indicates
"infinite" on
any of the
potentiometers
and does not
change as the
dials are rotated,
an open circuit is
indicated.
15. Automatic
15.
Visual inspection.
15. Change switch
exit switch
position.
in wrong
position.
MD0373
A-11