Diagnostic information 2-103
7002-xxx
5
First scan 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 first scan sensor. If this does
not fix the problem, replace the complete ADF assembly. See “ADF
complete assembly removal” on page 4-15.
Note: Whenever the complete ADF assembly is replaced, it is
necessary to perform scanner registration. See “Scanner
registration” on page 4-4.
FRU Action
First scan sensor
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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