JLG 600SJ Service And Maintenance Manual page 267

Fault Flash Communicated (Displayed on
Code Analyzer) Fault
D/S JOY. OUT OF RANGE
HIGH
D/S JOY. CENTER TAP BAD
WAITING FOR FSW TO BE
OPEN
2/3
LIFT/SWING LOCKED – JOY-
STICK MOVED BEFORE
FOOTSWITCH
PUMP SWITCHES FAULTY –
CHECK DIAGNOSTICS/
BOOM
PUMP SWITCHES LOCKED –
SELECTED BEFORE FOOT-
SWITCH
PUMP SWITCHES LOCKED –
SELECTED BEFORE AUX
POWER
LIFT / SWING WITH NO
QPROX
l/s joy. qprox bad
l/s joy. out of range low
l/s joy. out of range high
3121202
Table 6-2. Help Fault Codes, Displayed Faults, and Descriptions
Resistive joysticks: These faults do not occur if the Vref voltage is below 8.1
volts. If Vref is above 7.7 volts, Vref is operating out of tolerance or a short to
battery has occurred.
Inductive joysticks: The trigger points for these faults are dependent on the
centertap voltage reading. These faults will be triggered when the voltage
is more than the centertap voltage plus half the centertap voltage plus 0.3
volts. If the centertap is at the high end of the range, these faults will be trig-
gered above 4.35 volts. If the centertap is at the low end of the range, these
faults will be triggered above 3.8 volts.
Resistive joysticks: These faults occur when the center tap voltage is not
between 3.08 volts and 3.83 volts. Due to resistor tolerances there is a +/-
.1 volt range around these values where the fault may be indicated.
Inductive joysticks: These faults occur when the center tap voltage is not
between 2.18 volts and 2.70 volts. Due to resistor tolerances there is a +/-
.1 volt range around these values where the fault may be indicated.
Footswitch was closed when platform mode was selected. Can be
reported during power-up sequence.
Flash code 2/3 indicates problems with boom function selection.
Platform upper lift or swing was selected before and during footswitch clo-
sure.
A boom function (lower lift, telescope, basket level, basket rotate, jib) has
both directions selected together.
A platform boom function (lower lift, telescope, basket level, basket rotate,
jib) was selected before key switch or footswitch closure.
A ground boom function (lower lift, telescope, basket level, basket rotate,
jib) was selected before aux power.
This fault only occurs with inductive joysticks. It occurs if the joystick is
moved out of the neutral position with no Qprox sensors active.
These faults only occur with inductive joysticks. They indicate that the Q-
Prox sensor is reading above 3.18 volts.
Resistive joysticks: These faults do not occur.
Inductive joysticks: The trigger points for these faults are dependent on the
centertap voltage reading. These faults will be triggered when the voltage
is less than the centertap voltage minus half the center tap voltage minus
0.3 volts. If the centertap is at the high end of the range, these faults will be
triggered below 1.05 volts. If the centertap is at the low end of the range,
these faults will be triggered below 0.79 volts.
Resistive joysticks: These faults do not occur if the Vref voltage is below 8.1
volts. If Vref is above 7.7 volts, Vref is operating out of tolerance or a short to
battery has occurred.
Inductive joysticks: The trigger points for these faults are dependent on the
centertap voltage reading. These faults will be triggered when the voltage
is more than the centertap voltage plus half the centertap voltage plus 0.3
volts. If the centertap is at the high end of the range, these faults will be trig-
gered above 4.35 volts. If the centertap is at the low end of the range, these
faults will be triggered above 3.8 volts.
SECTION 6 - JLG CONTROL SYSTEM
Description
– JLG Lift –
Priority
3
6-21