Ag Leader Yield Monitor 2000 Operators Manual - Manual (Page 167)

Yield Monitor 2000
Troubleshooting
Ag Leader Technology
June 1997 6-15
8. You adjusted the top shaft of the grain elevator during harvest to tighten
the elevator chain.
Solution: If you move the top shaft of the grain elevator, it changes how
the grain hits the flow sensor, and calibration becomes inaccurate. You
must either:
•
Erase all your calibration loads by setting the actual weights to 0 and
entering new actual weights and then calibrate again
•
Begin using a different grain type for that crop, enter actual weights,
and calibrate for that grain type. You must do this for the all the
crops you have harvested so far.
Tip: Use the lower elevator adjuster to tighten the elevator chain,
instead of adjusting the top shaft.
9. The cab, distribution, or flow sensor cable connection is bad, or the flow
sensor is bad.
Solution: Press the FLOW key to check the “OF=xx” and “MN=xx
MAX=xx” values. The MN value should be between 10 and 45 and the
MX value should be between 35 and 150 while you are harvesting. The
OF value should be between 60 and 100 and should never change while
the separator is running at full speed with no grain flow or with a grain
flow.
If the MN, MX value is incorrect (e.g., MN=255, MX=0), or the OF
number is incorrect, check the cab, distribution, and flow sensor cables
for loose connections or cable damage and use a volt-ohm meter to
check for continuity or shorts in each cable.
Also, check the resistances in the short flow sensor cable, which is
attached to the flow sensor, between pins one and four and pins two and
three. Between pins one and four should be 375 ohms and between pins
two and three should be 350 ohms.
Refer to the Reference section for the pinouts of each cable.
10. The sensor cal, box cal, or voltage cal number is incorrect.
Solution: Press the SETUP key to display “xxx VOLTAGE CAL”,
“xxxx SENSOR CAL”, and “xxx BOX CAL”. Check each value against
the initial calibration sheet. None of the values should change unless you
replaced the monitor or flow sensor.