JLG M450 Service Manual - Manual (Page 108)

SECTION 3 - CHASSIS & TURNTABLE
3-68 – JLG Lift – 3121829
RBS Alarms and Flash Codes
In the event of an RBS alarm, a flash code will be issued
and an alarm indicated on the analyzer.
Alarms must be reset once the fault has been corrected
(see below).
Resetting the RBS Controller
The RBS can be reset using the analyzer or by disabling
and re-enabling the RBS controller. This will clear any cur-
rent fault condition with the controller.
Maintenance Schedule
Check oil level every 24 hours
Change engine oil and filter every 150 hours
Table 3-10. RBS Alarms and Flash Codes
Flash Code Problem RBS Condition
1-1
Low Oil Pressure 1 Below 7psi Shutdown
1-2 High Engine Temp. Over248°F(120°C) Shutdown
1-3 Overspeed Over 3800 RPM Shutdown
1-4 Underspeed 1 Below 2000 RPM Shutdown
Overcrank 3 failed crank cyclesCall to start removed Call to start removed
1-5 No Speed Signal 2 Shutdown
2-1
Overvoltage 3 Over 63VDC Shutdown
2-2 Engine Starting System fault 4 Alarm
2-4 Loss Of Voltage Sense Alternator output less than 1/2 of the system
nominal voltage (58VDC) Shutdown
steady Unit Enabled, no faults Unit can respond to any call to start
- Unit Off / Disabled Unit will not respond to any call to start
Notes:
1 Enabled once time delay bypass period has elapsed after engine startup.
2 Delayed to ensure the fault was not momentary.
3 Measured at the alternator output, shutdown is delayed by a factory set period to ensure the fault was not caused by a transient condition.
4 Indicates a problem with the engine start battery, engine magneto or magneto-voltage regulator.