Tilt Sensor Calibration; Ground Module Software Version 1.5; Ground Module Software Version 1.4 - JLG 1930ES Service Maintenance Manual

NOTE: Refer to Table 5-3, Machine Model Adjustment
(Machines with Sevcon - 1600346 Power Module
Only), and Table 5-5, Machine Configuration Pro-
gramming Information (Machines with Sevcon -
1600346 Power Module Only) for the default set-
tings.
Password 33271 will give you access to level 1,
which will permit you to change all machine person-
ality and/or machine setup settings.
CHANGING THESE SETTINGS MAY ADVERSELY AFFECT THE
PERFORMANCE OF YOUR MACHINE.
NOTICE
IT IS A GOOD PRACTICE TO AVOID PRESSURE-WASHING ELEC-
TRICAL/ELECTRONIC COMPONENTS. SHOULD PRESSURE-
WASHING BE UTILIZED TO WASH AREAS CONTAINING ELECTRI-
CAL/ELECTRONIC COMPONENTS, JLG INDUSTRIES, INC. REC-
OMMENDS A MAXIMUM PRESSURE OF 750 PSI (52 BAR) AT A
MINIMUM DISTANCE OF 12 INCHES (30.5 CM) AWAY FROM THESE
COMPONENTS. IF ELECTRICAL/ELECTRONIC COMPONENTS
ARE SPRAYED, SPRAYING MUST NOT BE DIRECT AND BE FOR
BRIEF TIME PERIODS TO AVOID HEAVY SATURATION.
The flash code is indicated on the face of the platform
control box as shown:
SYSTEM FAULT
Diagnostic Trouble Codes are indicated on the MDI for
those machines that are equipped with an MDI. (refer to
Section 3.2)
NOTE: Flash codes and DTC's are also displayed on the
handheld analyzer. For descriptions see, Table 5-2,
Flash Code Listing.
3121166
SECTION 5 - JLG CONTROL SYSTEM

5.2 TILT SENSOR CALIBRATION

Be sure that the machine is parked and stowed on level
ground.

Ground Module Software Version 1.5

1. Enter Access Level 1 and go to the CALIBRATION/
TILT SENSOR/LEVEL VEHICLE screen.
2. Choose the right arrow key to view the raw, uncali-
brated tilt sensor values. If either raw angle reads
5.0 or more, the machine is too unlevel and the
software will prohibit calibration. Therefore, attempt
to dissect the three areas of error to find the primary
contributor:
a. Machine mounting and/or grade:
Try to measure the top of the Ground Control
box for levelness. If unable to get a good read-
ing, unbolt the Ground Control box and check
the box's mounting surface for levelness.
b. Tilt sensor mounting on machine or wedged
crooked in control box:
If the machine mounting/grade appears accept-
able, remove and open the Ground Control box
carefully. Observe whether the tilt sensor is prop-
erly seated in its grooves.
c. Tilt sensor has developed an offset shift:
Remove the tilt sensor from the Ground Control
box but keep both the tilt sensor and Ground
Control box electrically connected. Level one
axis of the tilt sensor and observe the raw read-
ing (should be within ± 2.0). Do the same for the
other axis. If either axis is greater than ±2.0,
replace the tilt sensor.

Ground Module Software Version 1.4

1. Enter Access Level 1 and go to the CALIBRATION/
TILT SENSOR/LEVEL VEHICLE screen.
2. Choose the right arrow key to view the raw, uncali-
brated tilt sensor values. If either raw angle reads
5.0 or more, the machine is too unlevel and the
software will prohibit calibration. Therefore, attempt
to dissect the three areas of error to find the primary
contributor:
a. Machine mounting and/or grade:
Try to measure the top of the Ground Control
box for levelness. If unable to get a good read-
ing, unbolt the Ground Control box and check
the box's mounting surface for levelness.
b. Tilt sensor mounting on machine or wedged
crooked in control box:
If the machine mounting/grade appears accept-
able, remove and open the Ground Control box
– JLG Lift – 5-5