Skyjack SJ63 AJ+ Service Manual

161
SJ63 AJ+, SJ63 AJ 229043AAA
Electrical System - CE & AS Section 4 – Troubleshooting Information
10. No output on pin #5 of the valve driver to wire
#20C.
Check pin #5 for 12 volts. If no voltage present with
foot on footswitch check section 5 for valve driver
test procedure.
11. Loose or broken wire #35 from jib switch S21 to
plug A pin#17 in platform control console.
Check continuity. Replace if defective.
12. 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.
13. Loose or broken wire #35 from base connector
plug A pin #17 to base terminal block.
Check continuity. Replace if defective.
14. Loose or broken wire #35 from base terminal
block to main harness plug pin #12.
Check continuity. Replace if defective.
15. Loose or broken wire #35 in main harness cable
or its connectors.
Check for continuity between pin #12 on main
harness connector and rotate left/ jib up connector.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
16. Loose or broken wire #02 in main harness cable
or its connectors.
Check for continuity between pin #23 on main
harness connector and rotate left/ jib up connector.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
17. Defective platform rotate left/ jib up valve coil
5H-35.
Check continuity and resistance through coil.
Replace if defective.
4.3-43 No Jib Down from the Platform Control Console
1. Loose or broken wire #8 from platform terminal
block to relay 36CR.
Check continuity. Replace if defective.
2. Loose or broken wire #8B from relay 36CR to jib
down switch S21.
Check continuity. Replace if defective.
3. Loose or broken wire #8B from jib down switch
S21 to diode D8B.
Check continuity. Replace if defective.
4. Open or defective diode D8B. Check diode. Replace if defective.
5. Loose or broken wire #8D from diode D8B to jib
down switch S21.
Check continuity. Replace if defective.
6. Defective jib down switch S21. Check continuity through switch while activating jib
down function between wires #8D and #34.
7. Loose or broken wire #20B from jib up switch
S21 to diode D20B.
Check continuity. Replace if defective.
8. Open or defective diode D20B. Check diode. Replace if defective.
9. Loose or broken wire #20A from diode D20B to
valve driver pin #33.
Check continuity. Replace if defective.
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Skyjack SJ63 AJ+ Specifications

General

Brand	Skyjack
Model	SJ63 AJ+
Category	Boom Lifts
Language	English