214683 236 Revision A
Figure 3.400: John Deere S7 Display –
Diagnostics Center
7. Select AHC - SENSING (A). The AHC - SENSING
\DIAGNOSTICS page displays.
Figure 3.401: John Deere S7 Display – Checking
Sensor Voltage
8. Select SENSOR tab (A) to view sensor voltages. The
center header height sensor voltage (B) must be
between 0.5 and 4.5 V, with at least 3 V of variation
between 0 and 4 on the float indicator box.
NOTE:
If the optional Auto Lateral Tilt AHHC kit is installed, the
left and right header height sensors must also be in the
same 0.5–4.5 V range.
9. If sensor voltage adjustment is required, refer to
Adjusting Voltage Limits: One-Sensor System, page
131.
Calibrating Feeder House (John Deere S7 Series)
Feeder house calibration must be done before header calibration.
For best performance of auto header height control (AHHC), perform these procedures with center-link set to D.
When setup and calibration are complete, adjust center-link back to desired header angle. For instructions, refer to
Adjusting Header Angle from Combine, page 83.
NOTE:
Changes may have been made to the combine controls or display since this document was published. Refer to the
combine operator’s manual for updates.
1. Ensure center-link is set to D.
2. Rest header on down stops and unlock float.
3. Place wings in locked position.
OPERATION
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