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Section 4 – Troubleshooting Information
7. Loose or broken wire #14 from valve driver
J2 pin #5 to plug A pin #7 in platform control
console.
8. Loose or broken wire #14 in boom cable A or its
connectors.
9. Loose or broken wire #14 from base connector
plug A pin #7 to base terminal block.
No Boom Down from Base Console:
NOTE
Boom Down 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
boom switch S12.
2. Defective boom switch S12.
3. Loose or broken wire #13 from boom switch S12
to base terminal block.
No Boom Down 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. Loose or broken wire #04 from platform terminal
block to joystick controller A1.
2. Loose or broken wire #02 from platform terminal
block to joystick controller A1.
3. No output on y-axis of joystick controller A1
4. Loose or broken wire "Y" from joystick controller
to J3 pin #16 of valve driver.
5. No output on J3 pin #24 of the valve driver to
wire #20B.
6. No output on J2 pin #6 of the valve driver to wire
#14
229044ADA
106
Check continuity. Replace if defective.
Check for continuity between pins #7 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Check continuity through switch while activating
up function between wires #10A and #13. Replace
switch if no continuity.
Check continuity. Replace if defective.
Follow the steps in
No Boom Down from Base or
Platform Consoles: on page
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Refer to joystick test procedure in section 5.
Check continuity. Replace if defective.
Check for 12 volts. If no voltage present with foot
on footswitch check section 5 for OCM pin voltage
reference.
Check for a minimum 3.5 volts. If no voltage
present with foot on footswitch check section 5 for
OCM pin voltage reference.
Electrical System
107.
SJ85 AJ
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