156
229042ABA SJ46 AJ+, SJ46 AJ, SJ51 AJ
Section 4 – Troubleshooting Information Electrical System - CE & AS
8. Loose or broken wire #04A from platform
terminal block to footswitch S11.
Check continuity. Replace if defective.
9. Open or defective footswitch S11. Check continuity through switch while activating
footswitch function between wires #04A and #08A.
If no continuity found replace switch.
10. Loose or broken wire #08A from footswitch S11
to valve driver pin #16.
Check continuity. Replace if defective.
11. Loose or broken wire #04 from platform terminal
block to valve driver pin #1, 2 & 13.
Check continuity. Replace if defective.
12. Loose or broken wire #02 from platform terminal
block to valve driver pin #24, 25 & 26.
Check continuity. Replace if defective.
13. No output on pin #6 of the valve driver to wire
#08.
Check pin #6 for 12 volts. If no voltage present with
foot on footswitch check section 5 for OCM pin
voltage reference.
14. Loose or broken wire #04 from platform terminal
block to diode D04.
Check continuity. Replace if defective.
15. Open or defective diode D04. Check diode. Replace if defective.
16. Loose or broken wire #60 from diode D04 to
platform terminal block.
Check continuity. Replace if defective.
17. Loose or broken wire #60 from platform terminal
block to plug B pin #16 in platform control
console.
Check continuity. Replace if defective.
18. 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.
19. Loose or broken wire #60 from plug B pin #16 to
base terminal block.
Check continuity. Replace if defective.
No Boom Up From Platform Control Console
1. Loose or broken wire #04 from platform terminal
block to joystick controller A1.
Check continuity. Replace if defective.
2. Loose or broken wire #02 from platform terminal
block to joystick controller A1.
Check continuity. Replace if defective.
3. No output on y-axis of joystick controller A1. Refer to joystick test procedure in section 5.
4. Loose or broken wire “Y” from joystick controller
A1 to valve driver pin #29.
Check continuity. Replace if defective.
5. No output on pin #5 of the valve driver to wire
#20B.
Check pin #5 for 12 volts. If no voltage present with
foot on footswitch check section 5 for OCM pin
voltage reference.
6. No output on pin #22 of the valve driver to wire
#14.
Check pin #22 for minimum 3.5 volts. If no voltage
present with foot on footswitch check section 5 for
OCM pin voltage reference.
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