Platform Down Function Inoperative - Genie GS-1930 Service Manual

Service Manual - First Edition
Platform Down
Function
Inoperative
Be sure all other
functions operate
normally.
Be sure the circuit
breaker and fuse are
not tripped or blown.
Be sure the batteries
are properly connected.
Be sure the batteries
are fully charged.
Part No. 39528
With the key switch in
the platform position and
the platform raised
slightly and the
Emergency Stop buttons
light is
pulled out to the
ON
position at both the on
ground and platform
controls and the lift/drive
switch in the lift position,
activate the controller in
the direction and
DOWN
check to see if the error
indicator light is on.
light is not on
Continued on the next
page.
Genie GS-1530 & Genie GS-1930
Section 5 - Troubleshooting Flow Charts
With the platform raised
and the safety arm
installed, connect the
leads of a volt meter to
the wires on the platform
lowering coil on the 0V
cylinder without
removing the wires. With
the key switch in the
platform position and the
lift/drive toggle switch in
the lift position, activate
the controller in the
direction and
DOWN
check the voltage.
24V
0 or
Label and disconnect
infinite
the wires from the coil
ohms
on the platform lowering
valve (item R) at the
platform lift cylinder and
check the resistance
(See Repair Section).
23 to 25
ohms
With the platform raised platform
and the safety arm lowers
removed, pull the
manual platform
lowering handle at the
ground controls.
platform does
not lower
Check for mechanical
restrictions keeping the
platform from lowering
OR repair or replace the
platform lowering valve
cartridge (item R) OR
repair or replace the lift
cylinder OR consult the
Genie Industries Service
Department.
Chart 7
Repair open in the wht
wire (B6-down coil) from
the platform lowering
valve coil (item R) to the
ECM OR repair open in
the brown ground wire
circuit from the coil to
the battery module tray
OR replace the ECM
OR consult the Genie
Industries Service
Department.
Replace platform
lowering valve coil
(item R).
Repair or replace the
platform lowering valve
cartridge (item R).
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