Telescopic Boom Series
Models SJ61T & SJ66T
194312
December 2007
Page 127
Section 4 - Troubleshooting Information
Service and Maintenance
16.
Loose or broken wire #20D from platform terminal block to relay 08CR1.
-
Check continuity. Replace if defective.
17.
Loose or broken wire #20 from 08CR1 relay to plug A pin #8 in platform control console.
-
Check continuity. Replace if defective.
18.
Defective relay 08CR1.
-
Check relay. Replace if defective.
4.1-31 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.
7.
Loose or broken wire #14 from valve driver pin #22 to plug A pin #7 in platform control console.
-
Check continuity. Replace if defective.
8.
Loose or broken wire #14 in boom cable A or its connectors.
-
Check for continuity between pins #7 on cable A. Check for loose or corroded connections on
cable connectors. Replace if wire is defective.
9.
Loose or broken wire #14 from base connector plug A pin #7 to base terminal block.
-
Check continuity. Replace if defective.
10.
Loose broken wire #14 from base terminal block to turret harness plug pin #4.
-
Check continuity. Replace if defective.
11.
Loose or broken wire #14 from turret harness plug pin #4 to boom up valve 4H-14.
-
Check continuity. Replace if defective.
12.
Loose or broken wire #02 from turret harness plug to boom up valve 4H-14.
-
Check continuity. Replace if defective.
13.
Defective boom up valve coil 4H-14.
-
Check continuity and resistance through coil. Replace if defective.
-
4.1-32 No Boom Down 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.
Summary of Contents for SJ61T
Page 1: ...TELESCOPIC BOOMS MODELS SJ61T SJ66T 194312AE February 2017 SERVICE MANUAL...
Page 42: ...Page 42 December 2007 Telescopic Boom Series Models SJ61T SJ66T 194312 Notes...
Page 230: ...Page 230 December 2007 Telescopic Boom Series Models SJ61T SJ66T 194312 Notes...
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