Diagnostic information 2-97
7002-xxx
5
Interval sensor—electrical
checks
Turn the power off and reconnect CN10 to the motor driver card.
Measure the voltages in the table below with the sensor in normal
operation (sensor closed) and with the sensor open (paper over the
sensor).
If the voltages are incorrect replace the interval sensor. If this does
not fix the problem, replace the complete ADF assembly.
Note: Whenever the complete ADF assembly is replaced, it is
necessary to perform scanner registration. See “Scanner
registration” on page 4-4.
FRU Action
Interval sensor—reflective type (normally closed)
Connector CN10 (motor driver card)
Pin number Sensor closed (uncovered Sensor open (covered)
CN10—Pin 7 0 V dc 0 V dc
CN10—Pin 8 +0.03 V dc +5.0 V dc
CN10—Pin 9 +5.0 V dc +5.0 V dc
Note: All voltages are approximate values.
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