Skyjack SJ30ARJE User Manual

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SJ30AJE, SJ30ARJE196274AF
Section 4 – Troubleshooting Information Electrical System
4.2-28 No Telescope In from Platform Control Console
1. Loose or broken L wire from speed controller to
resistor R5 in platform control console.
Check continuity. Replace if defective.
2. Open or defective resistor R5. Check resistor. Replace if defective.
3. Loose or broken wire #38B from resistor R5 to
telescope switch S8.
Check continuity. Replace if defective.
4. Defective telescope switch S8. Check continuity through switch while activating
the function between wires #38B and #38A.
5. Loose or broken wire #38A from riser switch S8
to valve driver pin #32.
Check continuity. Replace if defective.
6. Voltage out of range at valve driver pin #32. Check voltage while operating telescope in. Voltage
should be 4.83 volts. Refer to toggle switch voltage
reference worksheet in section 5 if out of range.
7. No output on pin #23 of the valve driver to wire
#20A.
Check pin #23 for proportional voltage. This
voltage varies with the A3 boom speed control. If
no voltage present with foot on footswitch check
section 5 for OCM pin voltage reference.
8. No output on pin #21 of the valve driver to wire
#38.
Check pin #21 for 12 volts. If no voltage present
with foot on footswitch check section 5 for OCM pin
voltage reference.
9. Loose or broken wire #38 from valve driver
pin #21 to plug A pin #20 in platform control
console.
Check continuity. Replace if defective.
10. Loose or broken wire #38 in boom cable A or its
connectors.
Check for continuity between pins #20 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
11. Loose or broken wire #38 from base connector
plug A pin #20 to base terminal block.
Check continuity. Replace if defective.
12. Loose or broken wire #38 from base terminal
block to main manifold harness.
Check continuity. Replace if defective.
13. Loose or broken wire #38 from main manifold
harness to telescope in valve 4H-38.
Check continuity. Replace if defective.
14. Loose or broken wire #02 from main manifold
harness to telescope in valve 4H-38.
Check continuity. Replace if defective.
15. Defective telescope in valve coil 4H-38. Check continuity and resistance through coil.
Replace if defective.

Skyjack SJ30ARJE Specifications

General

Brand	Skyjack
Model	SJ30ARJE
Category	Boom Lifts
Language	English