Xo 4, Troubleshooting Manual

Page: 37 / 88

XO 4 & XO FLEX TROUBLE SHOOTING GUIDE
Version 3.30 37
Failure description Reason Solution
Micromotor not activated
when the suspension is
pulled
Suspension cable is not mounted
properly or is defective Check that the CA-101 cable
connecting the “Bridge PCB” to
the “Suspension PCB AO-328”
board is properly connected.
The suspension PCB is
defective. Check if the LED D110 on the
suspension AO-328 PCB lights
on when the suspension is
pulled.
Before replacing the AO-328,
make sure that the suspension
works properly.
The suspension cord is defective A little preprogrammed chipset is
placed in the cord. When water
infiltrates the cord, it damages
the chipset causing the loss of
the suspension driver.
Some of the new suspension
cord has not been programmed
properly from factory, resulting at
the new cord will not be detected
after installation.
Change the suspension when all
the above has been verified.
The instrument bridge PCB is
defective. Change “Bridge PCB AN-368”.
Micromotor is active while
the suspension cord is not
pulled
The magnet not aligned or not
correctly placed in the field of the
hall contact Align the suspension.
Check that the magnet is present
and properly aligned. If the
magnet is missing, change the
AN-011.
If not aligned, check that the
screws on the suspension
bearing bracket are secure.
Suspension cable is not mounted
properly or is defective Check that the CA-101 cable
connecting the AN-368 PCB to
the AO-328 board is properly
connected.
The motor does not run
when the pedal is activated The “Powerdriver PCB” is
defective
The µmotor rotation is controlled
by the power driver. Before
changing the “Powerdriver PCB
AO-137” make the following
verification
Check if the LED D2 & D4
situated on the “Power supply
PCB AN-371”, are lit.
if not verify the fuse 11 & F12
For more details, review the
session “Power supply PCB AN-
371” on page 16.
If all above is working:
Check on the “bridge PCB AN-
368” if the “Power driver AO-
137” is modulating properly.
Measure on J2 between