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SJ30AJE, SJ30ARJE196274AF
Section 4 – Troubleshooting Information Electrical System
4.2 Electrical System
4.2-1 All Controls Inoperative
1. Battery disconnected or discharged. Reconnect battery. Recharge if discharged.
2. Loose or dirty battery cables. Clean and tighten battery cables.
3. Open or defective main power disconnect right
or left.
Close disconnect. Replace if defective.
4. Charger plugged into AC source. Make sure batteries are charged. Unplug from AC
source.
5. Loose or broken wire #60 from base terminal
block to charger cutout relay L1CR.
Check continuity. Replace if defective.
6. Defective relay L1CR. Check relay. Replace if defective.
7. Loose or broken wire #60A from charger cutout
relay L1CR to base terminal block.
Check continuity. Replace if defective.
8. Loose or broken wire #60A from base terminal
block to motor control harness A.
Check continuity. Replace if defective.
9. Loose or broken wire #60A from motor control
harness A pin #23 to left motor controller pin
#LM7.
Check continuity. Replace if defective.
10. Loose or broken wire #48+ from motor contactor
3CCR to diode D48+.
Check continuity. Replace if defective.
11. Open or defective diode D48+. Check diode. Replace if defective.
12. Loose or broken wire #48+ from diode D48+ to
fuse F1.
Check continuity. Replace if defective.
13. Defective fuse F1 (10Amp). Check fuse. Replace if defective.
14. Loose or broken wire #03 from fuse F1 to base
emergency stop switch S6.
Check continuity. Replace if defective.
15. Defective base emergency stop switch S6. Check switch. Replace if defective.
16. Loose or broken wire #3A from base emergency
stop switch S6 to base key switch S3.
Check continuity. Replace if defective.
17. Defective base key switch S3. Check switch. Select either base or platform.
Replace if defective.
18. Loose or broken wire #3B from base emergency
stop switch S6 to platform plug A pin #4 in base
control console.
Check continuity. Replace if defective.
19. Loose or broken wire #3B in boom cable A or its
connectors.
Check for continuity between pins #4 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
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