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Section 5 • Troubleshooting Flow Charts
Chart 7
Platform
Down
Function
Inoperative
Be sure all other
functions operate
normally.
Be sure the circuit
breaker and fuses
are not tripped or
blown.
Be sure the
batteries are fully
charged and
properly connected.
5 - 10
With key switch turned
to platform controls and
0V
both Emergency Stop
buttons pulled out to the
position, move the
ON
lift/drive select switch
TS16 to the
LIFT
position. Press and hold
the function enable
switch SW5 and move
the joystick controller
JC3 in the direction
indicated by the yellow
arrow. Check voltage on
YL wire at platform
down solenoid valve Y7.
24V
0 or
Disconnect the wires
infinite
from Y7 and measure
ohms
the coil resistance See
Repair Section.
23 to 26 ohms
Repair or replace the
plaftorm up directional
valve cartrige (item K)
OR consult Genie
Industries Service
Department.
GR-8 • GR-12 • GR-15
Repair open in circuit
from Y7 through
platform down control
relay CR51 to voltage
divider U14.
Replace coil on Y7.
August 2005
REV A
Part No. 72965
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