Boom Extend Function Inoperative - Genie S-60 Service Manual

Section 5 • Troubleshooting Flow Charts
Chart 16
Boom Extend
Function
Inoperative
Be sure all other
functions operate
normally.
5 - 34
With key switch turned
to ground controls and
0V
both Emergency Stop
buttons pulled out to the
position, hold the
ON
function enable switch to
either side and move the
boom extend toggle
switch TS15 in the
direction. Check
EXTEND
voltage on blk/red-4 wire
on boom extend/retract
proportional valve coil
(item G).
20V or more
Continued on the next
page.
Genie S-60 & Genie S-65
Third Edition • First Printing
Hold the function enable
switch to either side and
9 to 10V
move the boom extend
toggle switch in the
direction. Check
EXTEND
voltage at TB9.
0V
With key switch turned 9 to 10V Repair open in blk/red-3
to platform controls and
both Emergency Stop
buttons pulled out to the
position, press down
ON
the foot switch and
move the boom extend/
retract toggle switch
TS7 in the
EXTEND
direction. Check voltage
at TP9.
0V
Press down the foot
0V
switch and check
voltage at center
terminal of TS7.
12V or more
Test toggle switch TS7, bad
see Repair Section.
good
Repair open in blk/red
wire circuit from TS7 to
TP9.
Repair open in blk/red-3
wire circuit from TB9 to
boom extend/retract
proportional valve coil
OR repair open in brn
ground wire circuit to
valve coil.
wire from TP9 to TB9.
Repair open in power
supply circuit from TP24
to TS7.
Replace toggle switch
TS7.
Part No. 65196