MEC升降车平台90398-SCH维修电气原理图手册

LED Diagnostics DefinitionsLED READINGDIAGNOSISLED onController is operationalLED offInternal fault1 flashPersonality/CRC faultThis fault is usually an internal failure of the non-volatile memory.To clear this fault,check all adjustable personality settings andpower-recycle.If fault persists or this failure is recurrent,replacelogic card.2 flashesProcedure faultThis includes drive,enable-bar,steer or lift function selected atpower on;drive or lift or steer selected without enable-bar;enable-bar neutral 20 second time-out.Recycle through neutral toclear.3 flashesMotor permanently lowThis includes MOSFET short circuit.This fault shuts down allmodes.Recycle through neutral to clear.4 flashesMotor permanently highThis includes pump line contactor welded or open.This fault shutsdown all modes.Platform/Base selector switch recycle to clear.5 flashesPower frame capacitor charge faultCheck wiring.Replace powerpak.6 flashesFaulty acceleratorThis includes the accelerator greater than 15%at power on,andwire-off.If wire-off occurs during active function,motor speed willdefault to accelerator fault creep.7 flashesBattery voltage faultThis includes battery voltage excessively high or low(set byspecial adjustable personalities)or BDI has reached cutout level.Neutral rocycle to clear.Page 4-14May 2000(mec3068ES/3768ES"Service Parts Manual