Ag-leader Yield Monitor 2000 Operators Manual User Manual download pdf (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.

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Ag-leader Yield Monitor 2000 Operators Manual User Manual Page 167