JLG 1930ES Operation And Safety Manual page 129

9-9 Hardware
DTC FAULT MESSAGE
9950 POWER MODULE FAILURE - INTERNAL
9951 ERROR
9952
9953
9954
9955
9956
9957
9958
9960
9962
9963
9964
9969
9971
9970
99143
99144
99145
99146
99147
99148
99149
3121655
SECTION 6 - GENERAL SPECIFICATIONS AND OPERATOR MAINTENANCE
DESCRIPTION
A problem has been detected with the
power module.
CHECK
Cycle machine power on /off a few times if this doesn't clear the DTC,
refer problem to a qualified JLG mechanic.
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