Skyjack SJ85 AJ Service Manual

100
SJ85 AJ229044ADA
Section 4 – Troubleshooting Information Electrical System
4.2 Electrical System
4.2-1 All Controls Inoperative
All Controls Inoperative from Platform and Base:
1. Battery cables loose/disconnected. Tighten or connect battery cables.
2. Battery discharged or defective. Charge battery or replace if defective.
3. Loose or broken B+ cable from batteries to
battery disconnect switch S1.
Check continuity. Replace if defective.
4. Open or defective battery disconnect switch S1 Close switch. Replace if defective.
5. Loose or broken wire #03 from battery
disconnect switch S1 to circuit breaker CB1
Check continuity. Replace if defective.
6. Circuit breaker CB1 tripped or defective. Reset breaker, check for defective wiring. Replace
if defective.
7. Loose or broken wire #05 from circuit breaker
CB1 to base emergency stop switch S3.
Check continuity. Replace if defective.
8. Open or defective base emergency stop switch
S3.
Close switch. Replace if defective.
9. Loose or broken wire #07 from base emergency
stop switch S3 to base key S2.
Check continuity. Replace if defective.
10. Open or defective key select switch S2. Close switch. Replace if defective.
11. Loose or broken wire #60 from base terminal
block to relay 60CR.
Check continuity. Replace if defective.
12. Loose or broken wire #07 from base emergency
stop switch S3 to relay 60CR.
Check continuity. Replace if defective.
13. Loose or broken wire #02 from relay 60CR to
base terminal block.
Check continuity. Replace if defective.
14. Defective relay 60CR. Check relay. Replace if defective.
15. Loose or broken wire #9 from relay 60CR to base
terminal block.
Check continuity. Replace if defective.
16. Loose or broken wire #02 from base terminal
block to circuit breaker CB2.
Check continuity. Replace if defective.
17. Circuit breaker CB2 tripped or defective. Reset breaker, check for defective wiring. Replace
if defective.
18. Loose or broken wire #00 from circuit breaker
CB2 to battery negative.
Check continuity. Replace if defective.
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Skyjack SJ85 AJ Specifications

General

Brand	Skyjack
Model	SJ85 AJ
Category	Boom Lifts
Language	English