114
SJ30AJE, SJ30ARJE196274AF
Section 4 – Troubleshooting Information Electrical System
4.2-36 No Manual Platform Level Up from Platform Control Console
1. No output on pin #6 of the valve driver to
platform level switch S12 on wire #40B.
Check pin #6 for 12 volts. If no voltage present
with foot on footswitch check section 5 forOCM pin
voltage reference.
2. Defective platform leveling switch S12. Check continuity through switch while activating
level up function between wires #40B and #41.
3. Loose or broken wire #41 from platform level
switch S12 to platform terminal block.
Check continuity. Replace if defective.
4. Open or defective diode D41. Check diode. Replace if defective.
5. Loose or broken wire #40A from platform
terminal block to valve driver pin #18.
Check for 12 volts at pin #18. Check continuity.
Replace if defective.
6. 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.
7. Loose or broken wire #41 from platform terminal
block to plug B pin #11 in platform control
console.
Check continuity. Replace if defective.
8. Loose or broken wire #41 in boom cable B or its
connectors.
9. Loose or broken wire #41 from base connector
plug B pin #11 to base terminal block.
Check continuity. Replace if defective.
10. Loose or broken wire #41 from base terminal
block to main manifold harness.
Check continuity. Replace if defective.
11. Loose or broken wire #41 from main manifold
harness to platform level up valve 4H-41.
Check continuity. Replace if defective.
12. Loose or broken wire #02 from main manifold
harness to platform level up valve 4H-41.
Check continuity. Replace if defective.
13. Defective platform level up coil 4H-41. Check continuity and resistance through coil.
Replace if defective.
NOTE
Platform level function will not operate if you are commanding any other boom function.
To Next Page
Loading...
Need help?
General
