
DS 350 G Boom Control Troubleshooting- TMS/TTS870 / RT865 BXL
031-300-190-039 Rev. B 4/30/99
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15. Continuation
Is the voltage
correct (-500mV)?
Defective length potentiometer.
Replace length potentiometer
assembly. Refer to drawing on
page 18.
Yes
Continuation
Is the voltage
correct (-5V)?
Yes
Verify the length sensor signal.
Measure the voltage at the length
transducer (LWG 221) terminal 1
(GND) and 2 (-500mV) with fully
retracted boom.
Check the length signal in the central unit.
Measure the signal at central unit terminal
A104 X1/73 (-500mV) and A104 X1/8
(GND) with fully retracted boom.
Refer to section 11.
No
Continue on next page
Faulty wiring between
central unit and length
transducer. Check
wiring, junction boxes
and connectors for
faulty wiring.
No