Skyjack SJ85 AJ Service Manual

102
SJ85 AJ229044ADA
Section 4 – Troubleshooting Information Electrical System
All Controls Inoperative from Platform Console:
NOTE
Functions may be disabled by the dual load zone system and/or overload system if equipped. Please first
ensure the boom is fully retracted and there are no faults in the dual load/overload system.
1. Open or defective emergency stop switch S4. Pull emergency switch out. Check continuity
through switch. Replace if defective.
2. Loose or broken wire #04A from emergency stop
switch S4 to platform start switch S9.
Check continuity. Replace if defective.
3. Loose or broken wire #04 emergency stop
switch S4 to platform terminal block.
Check continuity. Replace if defective.
4. Loose or broken wire #04B from platform
terminal block to footswitch S11.
Check continuity. Replace if defective.
5. Open or defective footswitch S11. Check continuity through switch while activating
footswitch function between wires #04 and #08A. If
no continuity found replace switch.
6. Loose or broken wire #04 from platform terminal
block to valve driver connector J1 pin #1, 2, 3,
and 4.
Check continuity. Replace if defective.
7. Loose or broken wire #02 from platform terminal
block to valve driver connector J1 pin #10, 11,
12, and 13.
Check continuity. Replace if defective.
8. Loose or broken wire #04 from platform terminal
block to diode D04.
Check continuity. Replace if defective.
9. Open or defective diode D04. Check diode. Replace if defective.
10. Loose or broken wire #60 from diode D04 to
platform terminal block.
Check continuity. Replace if defective.
11. Loose or broken wire #60 from platform terminal
block to plug B pin #16 in platform control
console.
Check continuity. Replace if defective.
12. Loose or broken wire #60 in boom cable B or its
connectors.
Check for continuity between pins #16 on cable B.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
13. Loose or broken wire #60 from plug B pin #16 to
base terminal block.
Check continuity. Replace if defective.
14. Loose or broken wire #02 from platform terminal
block to base terminal block.
Check continuity. Replace if defective.
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Skyjack SJ85 AJ Specifications

General

Brand	Skyjack
Model	SJ85 AJ
Category	Boom Lifts
Language	English