Upright LX31 Service Manual

Section 3 - Troubleshooting MOS90 Fault Finding Flow Charts
067448-023 LX31/LX41 Electric and Bi-Energy Work Platform | European Specifications Page 3-13
11 Flashes
- Tachometer signal out of
range
- Drive inhibited
- Flashes until fault cleared
Check tachometer wires for shorts to frame or a
voltage source
Rectify
Check output voltage from tachometer using
voltmeter
Replace
Replace MOS90 Controller
12 Flashes
- Severe tilt condition with
platform raised above
2 meters
- Vehicle goes into emergency
stop (forced neutral state) and
plug brakes to a stop
- Recycle nuetral to clear fault
Use calabrator test mode and check platform up
switch and severe tilt switch inputs and wiring
Rectify
Replace MOS90 Controller

Upright LX31 Specifications

General

Brand	Upright
Model	LX31
Category	Lifting Systems
Language	English