JLG 4394RT Service Manual - Manual (Page 39)

SECTION 3 - CHASSIS & SCISSOR ARMS
3121133 – JLG Sizzor – 3-3
6. Press the left arrow button and then enter.
NOTE: Anytime the ground control board or if the rotary sen-
sor is replaced the rotary sensor must be reset
(zeroed out).
When stowed, if angle sensor is within the range of
CALIB (see below), the machine should be recali-
brated.
If the gap ever increases beyond 5/16 in., the switch
may cause intermittent operation.
7. Completely lower the platform. Using the analyzer
press escape and scroll through DIAGNOSTICS and
then go to ELEV SENSOR, press ENTER. Check to
see that the following items are reading correctly.
ANGLE SNSR 0.40 - X.XXV
ZEROED 0.00V
ELEV CUT
CALIB 0.50v - 1.0v
8. Press ESCAPE until you arrive at DIAGNOSTICS,
then scroll over to top level menu SET ELEV SEN-
SOR, press ENTER. At this point press ENTER key. If
everything tested properly the analyzer will read
COMPLETE.
9. Now lift the machine up. Drive speed should be
reduced to elevated speed at the following heights;
3394RT - 6-9 ft (1.8 - 2.7m)
4394RT - 7-10 ft ( 2.1 - 3m)
10. Press ESCAPE, remove analyzer and assure all
hardware is tight.
NOTE: If voltage is too low the analyzer will display SEN-
SOR FAILURE. If the voltage is set too high the ana-
lyzer will read NOT STOWED. When calibration is
attempted, once it is set within the proper limits, the
analyzer will read COMPLETE.
Elevation Sensor Calibration
(Software P1.20 & Higher)
Using the Analyzer, in Access Level 1, go to MENU: CALI-
BRATION:
1. SET STOW ELEV;
a. Completely lower platform to stowed position.
b. Enter YES on the Analyzer.
c. COMPLETE will show on the analyzer when cali-
brated.
2. SET 26FT ELEV (3394RT) or SET 30FT ELEV
(4394RT);
a. Raise platform to a height of 26 feet for the
3394RT or 30 feet for the 4394RT (measured
deck to ground).
b. Enter YES on the Analyzer.
c. COMPLETE will show on the analyzer when cali-
brated.
3. SET 30FT ELEV (3394RT) or SET 36FT ELEV
(4394RT);
a. Raise platform to a height of 30 feet on the
3394RT or 36 feet for the 4394RT (measured
deck to ground).
b. Enter YES on the Analyzer.
c. COMPLETE will show on the analyzer when cali-
brated.
NOTE: Elevation Proximity Switch must be mounted and
functioning properly to calibrate the Elevation Sen-
sor.
NOTICE
FOR MACHINE TO OPERATE TO CAPACITY, BE SURE TO CALI-
BRATE ELEVATION SENSOR AT ALL THREE POSITIONS.
Joystick Calibration
(Software P1.20 & Higher)
Using the Analyzer, in Access Level 1, go to MENU: CALI-
BRATION: JOYSTICK and press ENTER.
1. Following the analyzer screen prompts:
a. Move the Joystick FORWARD and press ENTER.
b. Allow Joystick to be in CENTER position and
press ENTER.
c. Move the Joytstick REVERSE and press ENTER.
2. CAL COMPLETE or CAL FAILED will display on the
analyzer.
3. Possible reasons if calibration failed:
a. The forward position must be a lower voltage
than reverse position.
b. The difference between center and forward &
center and reverse must be atleast 1V.
Tilt Sensor Calibration:
1. Drive the machine onto a measured level surface
(±0.5° for both x and y axis).
2. Using the Analyzer, go to MENU: CALIBRATION;
TILT SENSOR. Press Enter. LEVEL VEHICLE will dis-
play. Press Enter again to calibrate.