JLG G12-55A AccuPlace Service Manual - Manual (Page 228)

Electrical System
9.110 G10-55A & G12-55A AccuPlace
INCOVA
PARAMETER
CHECK NOT
SUCCESSFUL 9990 INCOVA Parameter/Data
Check not successful. N This fault is a result of system controllers
computing different boom positions or
velocities. This fault may occur when the
CAN Bus communications are of poor
quality, if suspect sensor values are being
transmitted, or if the machine has
experienced abnormally rapid or
unexpected boom movements.
Cycle power to see if fault clears.
Check the amount of CAN1 traffic and
errors via the Analyzer under
DIAGNOSTICS/CAN STATISTICS.
Expected ranges of values are CAN1 Rx/
s ~ 600-700; CAN1 Tx/s ~ 100-150; CAN1
ERR F/S = 0. Troubleshoot CAN Bus if
errors are present or transmit/receive
values are suspect.
Verify the controllers are computing
similar sensor values via the Analyzer
under DIAGNOSTICS/BOOM
COMPONENTS. Check that the ISP
BOOM ANGLE, ISP BOOM LENGTH,
AND ISP FORK ANGLE correlate well
(angles +/-4deg; length +/-8") with the
BOOM ANGLE LEFT, TELE LENGTH,
and FORK ANGLE respectively.
CURRENT
FEEDBACK
GAINS OUT OF
RANGE 9944 The UGM factory set current
feedback gains are out of
range. Y Cycle power to see if fault clears.
If fault persists, record all Machine Setup
and Personality parameters. Next, toggle
model from existing model to another
machine model and back. This will
effectively set EEPROM values to default.
Adjust the Machine Setup and Personality
parameters to previous values. If fault
persists, UGM replacment is required.
CURRENT
FEEDBACK
CALIBRATION
CHECKSUM
INCORRECT 9945 The factory set current
feedback check sum is not
correct. Y Cycle power to see if fault clears.
If fault persists, record all Machine Setup
and Personality parameters. Next, toggle
model from existing model to another
machine model and back. This will
effectively set EEPROM values to default.
Adjust the Machine Setup and Personality
parameters to previous values. If fault
persists, UGM replacement is required.
Help Message
1
DTC Fault Condition
(for configurable items,
fault applies only if
configured)
Fault
Requires
AccuPlace
Reset?
Action(s)