Skyjack SJ6826RT - 4.2 Electrical System; 4.2-1 All Controls Inoperative

82
SJ6826RT, SJ6832RT
213560ABA
Section 4 – Troubleshooting Information Electrical System
4.2 Electrical System
4.2-1 All Controls Inoperative
1. Battery disconnected or faulty. Connect battery and test for proper supply voltage
2. Dirty or loose battery terminals. Clean and tighten connections.
3. Battery charge low. Check with a hydrometer. Reading should be 1.275 (fully
charged).
Recharge if low reading.
Replace if reading difference between cells is 0.050.
4. Main battery cables open or defective. Check continuity. Replace if defective.
5. Defective Main Fuse F1 (300 Amp). Check fuse. Replace if defective.
6. Open or defective Main Power Disconnect switch S1. Close switch.
Check continuity between wire #100 and wire #103 on
switch.
Check continuity between wire #03 and wire #103 on
switch.
Replace switch if no continuity between either one of the
two switch poles.
7. Loose or broken wire #03 from Main Power
Disconnect switch S1 to circuit breaker CB1.
Check continuity. Replace if defective.
8. Tripped or defective circuit breaker CB1. Reset breaker. Check for defective wiring. Replace
breaker if defective.
9. Loose or broken wire #3A from circuit breaker CB1 to
Power Relay 10CR1.
Check continuity. Replace if defective.
10. Loose or broken wire #3A from Power Relay 10CR1 to
Main Power Relay 10BCR.
Check continuity. Replace if defective.
11. Loose or broken wire #3A from Main Power Relay
10BCR to Anti-Start Relay 32CR1.
Check continuity. Replace if defective.
12. Loose or broken wire #3A from Anti-Start Relay 32CR1
to Base Emergency Stop switch S6.
Check continuity. Replace if defective.
13. Defective Base Emergency Stop switch S6. Operate switch. Check continuity between wire #3A and
wire #05 on switch when closed.
Replace if defective.
14. Loose or broken wire #05 from Base Emergency Stop
switch S6 to Base terminal block TB-1.
Check continuity. Replace if defective.
15. Defective Idle/Platform/Base Key switch S10. Select function with switch.
Check continuity between wire #05 and wire #07 on
switch. (Platform selected)
Check continuity between wire #05 and wire #10E on
switch. (Base selected)
Replace switch if no continuity during correct switch
function.
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