Landice 8700 Series Service Manual page 73

73
YES
1. Check wiring between motor control board,filter
choke and drive motor.
2. Check for broken choke or shorted
capacitor.
3. Check voltage going to motor directly at points 3 and 4 on
terminal block.
Check voltage output on the KB-TSM at points A+
and A-.
If motor has input voltage but does not turn, Check brushes /
replace motor.
( Drive Motor
#70014)
*Applies to Sprint 2 Only.
SYMPTOM
Elevation System not
functioning
If the Elevation system
works,
but the display is
erratic or
incorrect, check
elevation
potentiometer
calibration.
Disconnect the 6-pin
connector
between the motor and the
wiring
harness. Check for the
following,
on the harness side:
1. 120 VAC between (orange) and (white) wires when the
"UP" switch is
engaged,and 0 VAC when the switch
is disengaged.