All Controls Inoperative From Platform Control Console - Skyjack SJ82 T Service Manual

Electrical System
10. Loose or broken wire #41 from plug B pin #11 to
platform terminal block.
11. Open diode D41 located in platform terminal
block.
No Manual Platform Level Down
1. Loose or broken wire #10A from ignition/ pump
switch S5 to platform level switch S15.
2. Defective platform level switch S15.
3. Loose or broken wire #40 from platform level
switch S15 to base terminal block.
4. Loose or broken wire #40 from base terminal
block to turret harness pin plug pin #14.
5. Loose or broken wire #40 from turret harness pin
plug pin #14 platform level down valve 4H-40.
6. Loose or broken wire #02 from turret harness pin
plug platform level down valve 4H-40.
7. Defective platform level down valve coil 4H-40.
8. Loose or broken wire #40 from base terminal
block to base connector plug B pin #10.
9. Loose or broken wire #40 in boom cable B or its
connectors.
10. Loose or broken wire #40 from plug B pin #10 to
platform terminal block.
11. Open diode D40 located in platform terminal
block.

4.2-9 All Controls Inoperative From Platform Control Console

1. Open or defective emergency stop switch S4.
2. Loose or broken wire #4B from emergency stop
switch S4 to platform terminal block.
3. Loose or broken jumper wire #4B on
emergency stop switch S4.
SJ82 T, SJ86 T
Section 4 – Troubleshooting Information
Check continuity. Replace if defective
Check diode. Replace if defective.
Check continuity. Replace if defective
Check continuity through switch while activating
level down function between wires #10A and #40.
If no continuity found replace switch.
Check continuity. Replace if defective
Check continuity. Replace if defective
Check continuity. Replace if defective
Check continuity. Replace if defective
Check continuity and resistance through coil.
Replace if defective.
Check continuity. Replace if defective
Check for continuity between pins #10 on cable B.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
Check continuity. Replace if defective
Check diode. Replace if defective.
Pull emergency switch out. Check continuity
through switch. Replace if defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
229040ABA
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