Chapter 9
P/N 7010-0341 www.topconpositioning.com
9-1
Troubleshooting
Control Box Symptoms
1. Control Box LCD does not Display
2. Control Box LCD displays “Error”
3. Cannot adjust to On-Grade when Elevation Control is
selected.
4. Tow point cylinder does not move Up or Down
5. Tow point cylinder moves in the wrong direction
6. Tow point cylinder moves too fast or too slow.
7. System intermittently drives the cylinder all the way up or
down when tracking a mechanical ski.
8. Control Box displays Error and a number from 1 to 4
9. Grade lights flash high and low and will not stay On-Grade.
10. The valve is driving the hydraulic cylinder too far
overshooting grade.
11. The valve will not drive hydraulic cylinder far enough to get
sensor On-Grade.
12. The Control Box displays “No Signal” when indicate is
selected in elevation mode.
13. The Auto light on the Control Box intermittently flashes on
and off.
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