95
SJ30AJE, SJ30ARJE 196274AF
Electrical System Section 4 – Troubleshooting Information
4.2-15 No Jib Up from Base Control Console
1. Loose or broken wire #10A from enable switch
S21 to jib switch S16.
Check continuity. Replace if defective.
2. Defective jib switch S16. Check continuity through switch while activating
jib up function between wires #10A and #35. If no
continuity found, replace switch.
3. Loose or broken wire #35 from jib switch S16 to
base terminal block.
Check continuity. Replace if defective.
4. Open or defective diode D35. Check diode. Replace if defective.
5. Loose or broken wire #72 from base terminal
block to motor control harness A.
Check continuity. Replace if defective.
6. Loose or broken wire #72 from motor control
harness A pin #21 to left motor controller pin
#LM31.
Check continuity. Replace if defective.
7. Loose or broken wire #35 from base control
block to platform plug A pin #17 in base control
console.
Check continuity. Replace if defective.
8. Loose or broken wire #35 in boom cable A or its
connectors.
Check for continuity between pins #17 on cable
A. Check for loose or corroded connections on
cable connectors. Replace if wire is defective.
9. Loose or broken wire #35 plug A pin #17 to
platform terminal block.
Check continuity. Replace if defective.
10. Loose or broken wire #35 from platform terminal
block to jib up valve 4H-35.
Check continuity. Replace if defective.
11. Loose or broken wire #02 from platform terminal
block to jib up valve 4H-35.
Check continuity. Replace if defective. Check
continuity. Replace if defective.
12. Defective platform jib up coil 4H-35. Check continuity and resistance through coil.
Replace if defective.
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