Skyjack SJ85 AJ Service Manual

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SJ85 AJ 229044ADA
Electrical System Section 4 – Troubleshooting Information
No Telescope Out from Base Console:
NOTE
Telescope Out may be disabled by the dual load zone system. Please first ensure the boom is fully retracted
and there are no faults in the dual load system.
1. Loose or broken wire #10C from resistor R1 to
telescope switch S14.
Check continuity. Replace if defective.
2. Defective telscope switch S14. Check continuity through switch while activating
up function between wires #10C and #39. Replace
switch if no continuity.
3. Loose or broken wire #39 from boom switch S14
to base terminal block.
Check continuity. Replace if defective
Follow steps on No Boom Extend from Base or
Platform Consoles: on page 114.
No Telescope Out from Platform Console:
1. Loose or broken wire #04 from platform terminal
block to telescope switch S18.
Check continuity. Replace if defective.
2. Defective telescope switch S18. Check continuity through switch while activating
function between wires #4 and #38A. Replace
switch if no continuity.
3. Loose or broken wire 39A from S18 to J2 pin #33
of valve driver.
Check continuity. Replace if defective.
4. No output on J2 pin #24 of the valve driver to
wire #20B.
Check for 12 volts. If no voltage present with foot
on footswitch check section 5 for OCM pin voltage
reference.
5. No output on J2 pin #10 of the valve driver to
wire #39.
Check for a minimum 3.5 volts. If no voltage
present with foot on footswitch check section 5 for
OCM pin voltage reference.
6. Loose or broken wire #39 from valve driver J2
pin #10 to plug B pin #9 in platform control
console.
Check continuity. Replace if defective.
7. Loose or broken wire #39 in boom cable B or its
connectors.
Check for continuity between pins #9 on cable B.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
8. Loose or broken wire #39 from base connector
plug B pin #9 to base terminal block.
Check continuity. Replace if defective.
Follow steps on No Boom Extend from Base or
Platform Consoles: on page 114.
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Skyjack SJ85 AJ Specifications

General

Brand	Skyjack
Model	SJ85 AJ
Category	Boom Lifts
Language	English