Service manual

Part No. 39528 Genie GS-1530 & Genie GS-1930 5 - 19
Service Manual - First Edition
Section 5 - Troubleshooting Flow Charts
Chart 7
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.
With the key switch in
the platform position and
the platform raised
slightly and the
Emergency Stop buttons
pulled out to the
ON
position at both the
ground and platform
controls and the lift/drive
switch in the lift position,
activate the controller in
the
DOWN direction and
check to see if the error
indicator light is on.
light is
on
light is not on
Label and disconnect
the wires from the coil
on the platform lowering
valve (item R) at the
platform lift cylinder and
check the resistance
(See Repair Section).
0V
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.
24V
0 or
infinite
ohms
23 to 25
ohms
Replace platform
lowering valve coil
(item R).
Repair or replace the
platform lowering valve
cartridge (item R).
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.
With the platform raised
and the safety arm
removed, pull the
manual platform
lowering handle at the
ground controls.
platform does
not lower
platform
lowers
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
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
DOWN direction and
check the voltage.
Continued on the next
page.