JLG X20JP - X600AJ Service Manual - Manual (Page 305)

SECTION 6 - JLG CONTROL SYSTEM
3121623 – JLG Lift – 6-89
Lithium troubleshooting schedule – 72 volt
system
NOTE: To make the diagnostic on the Lithium system, it is neces-
sary to have available the complete wiring diagram and
the Rahmino software (5.0 or latest version) installed on a
laptop.
Only authorized people are allowed to manage and open
the battery pack.
Which kind of failure do you have?
a. Remote control display is always completely off.
b. Battery package level is “zero” even after the
charge.
c. Electric motor doesn’t run.
d. It is not possible to charge the battery package
= red/green light on the battery charger led is
present during the charge.
e. It is not possible to charge the battery package
at 100%, even after many hours of charge.
f. Lead battery is not charged by the system.
g. Ventilation fans don’t work.
h. Battery charger doesn’t work properly.
i. During the charge, plug icon on the display
change intermittently with the battery icon.
j. Battery package level is “zero” on the remote
control, however the machine works properly.
A – The remote control display is off
1 – With the key switch in ON position, open the main
board electric box, and check the leds on the main board.
Are they ON or OFF? If yes ON to step 2, if OFF go to step
3.
Figure 6-78.
2 –Leds on the main board are ON.
If the leds are ON, the main board is ON too, so the
remote control failure is not due at the Lithium system.
Please, check the remote control feed referring to the wir-
ing diagram.
3 – Leds on the main board are OFF.
Check the lead 12 volt battery: it has to feed all the boards
during the ignition, so if it is not OK the machine will
remain off.
Then check the voltage on the 12 Volt switch under the
key switch (page Z1 of the wiring diagram). Do you have
12 Volt from the red wire to the ground?
Figure 6-79.
If yes go to step 4, in no go to step 5.
4 – Red wire has 12 Volt.
Check the 12 Volt switch under the key switch, then check
the connection of the wire 1/12, from the key switch to the
pin B1 in the master board (see page Z1 of the wiring dia-
gram).
5 – Red wire has not 12 Volt.
Check fuse F6, then check the feed from 12 Volt lead bat-
tery to F6 fuse (= lead battery + feed connector + R1 + 2
ways connector).
(see page Z1 of the wiring diagram)
B – Battery package level is “zero” even after the
charge
Check the value in the INPUT menu, press button number
6 “service”, then 1 “input”, then 1 “previous”. Press button
number 9 “Esc” to go back.