DS 350 G Boom Control Troubleshooting- TMS/TTS870 / RT865 BXL
031-300-190-039 Rev. B 4/30/99
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16. Continuation
Check ribbon cable connection in
central unit and wiring in the
central unit.
Yes
No
Continuation
Yes
Faulty wiring to retract pressure switch or
defective pressure switch. Correct the
wiring and replace the switch if defective.
Refer to section 10.
No
Is the voltage correct?
Switch to automode. Start the engine and operate the
retract control. Measure the voltage at central unit
terminal A104 X1/40 (24V) and A104 X1/39 (GND)
while operating the extend control.
Select the service screen on the
console by pressing the two outer keys to the left of the
LCD simultaneously. The ramping value for the selected
section shall increase from 0 to 255. The ramping value
remains 0 in neutral position.
Is the
ramping value
increasing?
Continue to troubleshoot the wiring to
the 2 way valve and the hydraulic
circuit. Refer to Grove documentation.