JLG X20JP - X600AJ Service Manual User Manual
Page 232
SECTION 6 - JLG CONTROL SYSTEM
6-16
– JLG Lift –
3121623
X17JP - X20JP - X500AJ - X600AJ CAN BUS
DEVICES LAY-OUT
After checking, if the problem comes out from the device it’s
required to change the device, if the problem comes out
from the connection it’s required to change the wires.
NOTE: Evaluate that if you have already changed more than one
spares of the same device, in this case the problem could
be caused for example by water going inside the box, so
take a look to possible traces of oxidation on the contacts,
in this case isolate better the box. Be careful that the jib
box cover has a direction to be assembled, if assembled in
the wrong direction water goes inside.
RESISTENCES CHECK
WITHOUT FEEDING THE SYSTEM, looking into the elec-
tric diagram of your platform (as the example here below),
check the remote control/receiver and ECM1-2 CAN BUS
resistances (in the red round) on page CAN NETWORK
(page “E”), i.e. test the resistance measured within the
cable H and L that should be about 120 Ohm with the
device disconnected from the other and 60 Ohm with the
device connected each other, (always with FEED OFF)
Figure 6-38.