XLB-4232 DC
4-12
4-6 TROUBLESHOOTING
Table 4-3. Troubleshooting Chart
Problem Cause Correction
1. Outriggers indicator lamp
will not light up.
a. Master power switch turned off.
b. Emergency stop or power button
engaged (pushed in).
c. All outriggers not deployed.
d. At least one wheel not raised.
a. Turn on master power switch.
b. Rotate emergency stop buttons
clockwise to disengage.
c. Deploy all outriggers.
d. Raise at least one wheel off the
ground.
2. Boom UP/DOWN and
ROTATION functions do not
work.
a. Master power switch turned off.
b. Low battery power.
c. Boom lift is out of level.
d. Emergency stop or power button
engaged (pushed in).
e. Battery ground or in-series cable
loose.
f. All outriggers not deployed
g. At least one wheel is not raised.
h. Battery cable or equipment ground
lead loose or corroded.
i. Hydraulic pump not pumping.
a. Turn on master power switch.
b. Check battery charge LEDs on upper
control panel. Recharge batteries if
yellow or red LED is lighted.
c. Level boom lift with outrigger jacks.
d. Rotate emergency stop button
clockwise to disengage.
e. Check for and repair loose battery
connections or ground fault.
f. Check outrigger display. Lower
outrigger jacks to engage switches.
g. Check outrigger display. Raise at
least one wheel off the ground.
h. Clean and reconnect loose or corroded
battery cable or ground lead.
i. Check pump motor operation; repair
or replace if not running. Check gear
pump; replace if hot to touch.
3. Single boom lift or rotation
function does not work.
a. Loose wiring connector.
b. Valve solenoid not operating
properly.
c. System interlock fault.
d. Broken or loose wire.
a. Check wiring terminals in control box
and at valve manifold; repair loose
wiring terminal.
b. Swab out valve solenoids and recheck
function; replace solenoid if faulty.
c. Check display for system status.
Correct indicated fault conditions.
d. Repair or replace wire.
4. Boom lift and rotate
functions do not operate
properly.
a. Valve solenoid not operating
properly.
b. Loose solenoid wiring.
a. Swab out valve solenoids and recheck
function; replace solenoid if faulty.
b. Check wiring terminals in control box
and at valve manifold; repair loose
wiring terminal.
