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Section 5 • Troubleshooting Flow Charts
First Edition • Third Printing
CHART 10
Continued from page 38.
Turn key switch to
ground controls and pull
both Emergency Stop
buttons out to the ON
position.
Z-34/22 before serial
number 153 and
Z34/22N before serial
number 304: Move the
primary boom toggle
switch in the DOWN
direction and check
voltage on the red/blk #2
wire at the primary
boom down directional
valve coil (item I).
Z-34/22 from serial
number 153 to 1733
and Z-34/22N from
serial number 304 to
2226:Hold the function
enable toggle switch to
either side and move the
primary boom toggle
switch in the down
direction and check
voltage on the red/blk #2
wire at the primary
boom down directional
valve coil (item I).
Z-34/22 after serial
number 1733 and
Z-34/22N after serial
number 2226: Hold the
function enable toggle
switch to either side and
move the primary boom
toggle switch in the
down direction and
check voltage on the
red/blk #2 wire at the
primary boom down
directional valve coil
(item AC).
0V
Z-34/22 before serial
number 153 and
Z34/22N before serial
number 304: Move the
primary boom toggle
switch in the DOWN
direction and check
voltage at TB2.
Z-34/22 after serial
number 152 and
Z34/22N after serial
number 303: Hold the
function enable toggle
switch to either side and
move the primary boom
toggle switch in the
down direction and
check voltage at TB2.
24V
Repair open in red/blk
#2 wire circuit from TB2
to primary boom down
directional valve coil OR
repair open in brn
ground wire circuit to
manifold.
0V
Turn key switch to
platform controls and
pull both Emergency
Stop buttons out to the
ON position. With the
boom function speed
controller turned to 9,
press down the foot
switch and move the
primary boom toggle
switch in the DOWN
direction. Check voltage
at TB2.
0V
Repair open in red/blk
#2 wire circuit to TB2.
24V
Troubleshoot the
primary boom toggle
switch OR replace diode
on toggle switch OR
repair open in red/blk #2
wire circuit from toggle
switch to TB2 OR
replace toggle switch.
24V
Continued on the next
page.
5 - 40
Genie Z-34/22 & Genie Z-34/22N
Part No. 36540