(OBS) Page
20
of
20
Troubleshooting
Chart
Condition
Corrective
Control board stuck in the
self check mode
When the main power is turned on within
3
seconds of the time
that the battery charger plug is removed the control board initiates
a self diagnostic program. To cancel the self diagnostic program
check, simply
turn off the main power
for
3
seconds and
turn it back on.
If
the problem persists, turn
the main
switch
and
remove the
3
amp fuse for
5
seconds. Replace the fuse and turn
on the main switch.
Circuit Breaker tripped
Loose connections
Faulty micro switch
Faulty potentiometer
Faulty drive control board
Faulty motor
20
R e s e t
circuit breaker
Check
all
connections in propel motor
especially
at
V and
X.
With the batteries disconnected, disconnect the wire leads to the
micro switch, at
and test for continuity. When the
control levers
are squeezed the micro switch is engaged. There
be a
slight clicking sound when the switch is engaged.
Adjust
or
replace
as
necessary.
With the drive motor disconnected at or
X
test the
output
to the drive motor.
output voltage
at
Q
or
X
should vary
from
0
to
24
volts
as
the potentiometer
U
on the controls
is
adjusted and the control levers are squeezed. Resistance
of the
can
be
tested at
the
green
and
black leads found
at
the molex connector at
R.
The resistance should vary from
to
2.2
kilo ohms
as
the potentiometer
U
on the controls is adjusted
with the control levers
If these fail, the potentiometers
will both need
to be replaced.
Test voltage at
P
should be from
34
to
38
VDC.
If
the voltage at
P is
good but the propel motor won't respond, and all the tests
above have
done, replace the drive control
board.
Squeeze the control
adjust
the potentiometer
U,
and test
the voltage at
X
or
Q.
When the output voltage at
X
or
varies
from
0
to
24
volts but the motor does not respond, and all the tests
above have been done, replace the motor.
