Tilt Sensor; Platform Load Sense; Hardware; 7742 Field Voltage Improper - JLG 1930ES Service Maintenance Manual

7-7 Electric Motor
DTC FAULT MESSAGE

7742 FIELD VOLTAGE IMPROPER

8-1 Tilt Sensor

DTC FAULT MESSAGE
811 TILT SENSOR NOT CALI-
BRATED
812 NO DATA FROM TILT SEN-
SOR - NOT CONNECTED OR
FAULTY

8-2 Platform Load Sense

DTC FAULT MESSAGE
821

LSS CELL #1 ERROR

822

LSS CELL #2 ERROR

823

LSS CELL #3 ERROR

824

LSS CELL #4 ERROR

825 LSS HAS NOT BEEN CALI-
BRATED

9-9 Hardware

DTC FAULT MESSAGE
991

LSS WATCHDOG RESET

992

LSS EEPROM ERROR

993 LSS INTERNAL ERROR - PIN
EXCITATION
994 LSS INTERNAL ERROR -
DRDY MISSING FROM A/D
995 POWER MODULE FAILURE -
PERSONALITY RANGE
ERROR
3121166
DESCRIPTION
Drive, Steer, and Lift Prevented
DESCRIPTION
The tilt sensor calibration has not been
performed.
No signal from tilt sensor.
DESCRIPTION
A problem has been detected with the
load sense system.
A problem has been detected with the
load sense system.
A problem has been detected with the
load sense system.
A problem has been detected with the
load sense system.
The load sensing system module has not
been calibrated
DESCRIPTION
A problem has been detected with the
load sense system.
A problem has been detected with the
load sense system.
A problem has been detected with the
load sense system.
A problem has been detected with the
load sense system.
The power module detected an out-of-
range or corrupt personality setting
– JLG Lift –
SECTION 6 - DIAGNOSTIC TROUBLE CODES
CHECK
• The System Module voltage at the F1 and F2 terminals was
improper at power-up (expected to be ½ Battery Voltage). This is
caused by an open- or short-circuit in the field wiring or motor.
Disconnect the field and motor wiring from the System Module
and connect F1 / F2 with a short wire. If the situation persists
after a power cycle, it may be an internal issue.
• ZAPI - HEALTH (Status LED) - ON
CHECK
• Calibrate the tilt sensor, see Section 5.2.
• Replace then calibrate tilt sensor, see Section 5.2.
• Check tilt sensor connections and wiring in ground control box.
• Calibrate the tilt sensor, see Section 5.2.
• Replace then calibrate tilt sensor, see Section 5.2.
CHECK
• Refer to Section 2.3: Troubleshooting in the LSS manual,
3124288.
• Refer to Section 2.3: Troubleshooting in the LSS manual,
3124288.
• Refer to Section 2.3: Troubleshooting in the LSS manual,
3124288.
• Refer to Section 2.3: Troubleshooting in the LSS manual,
3124288.
• Empty platform. Calibrate LSS, see Section 2.2: Calibration in the
LSS manual, 3124288.
• Refer to Section 2.3: Troubleshooting in the LSS manual,
3124288.
CHECK
• Refer to Section 2.3: Troubleshooting in the LSS manual,
3124288.
• Refer to Section 2.3: Troubleshooting in the LSS manual,
3124288.
• Refer to Section 2.3: Troubleshooting in the LSS manual,
3124288.
• Refer to Section 2.3: Troubleshooting in the LSS manual,
3124288.
• Record all personality settings in ANALYZER -> PERSONALITIES
and ANALYZER -> MACHINE SETUP . Reset control system per-
sonalities to default settings by selecting a different model than
indicated, cycle power then select proper model. Then, enter per-
sonality settings recorded above.
6-17