6/02
2-142
DC1632/2240
9-351
Prelaunch Training/Review
Status Indicator RAPs
9-351 Drive Logic
The IBT Edge Sensor detected that the IBT Belt is not tracking correctly.
Initial Actions
ï Check the IBT Edge Sensor for damage. Ensure that the actuator is touching the edge of
the belt.
ï Check the IBT steering drives for damage.
Procedure
Switch on the power. There is +1VDC to +3VDC from P/J 533-A11 to GND.
YN
There is +5VDC measured between P/J533-A10 and P/J533-A9 on the I/F PWB.
YN
Replace the MCU PWB (PL 13.1).
There is +5VDC from P/J 533-A11 on the I/F PWB to GND.
YN
Check the connectors and wires. If the check is OK, replace the IBT Edge Sensor
(PL 5.4). If the problem continues, replace the MCU PWB (PL 13.1).
Replace the IBT Sensor (PL 5.4).
Check the wires and connectors. If the check is OK, replace the I/F PWB (PL 9.1). If the prob-
lem continues, replace the MCU PWB (PL 13.1).
Figure 1 IBT Steering Motor
Figure 2 IBT Edge Sensor
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