Lexmark X642e Service Manual page 141

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Table of Contents

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

First scan sensor

Connector CN10 (motor driver card)

Sensor closed (uncovered)

Note: All voltages are approximate values.

If the voltages are incorrect, replace the first scan sensor. If this does

not fix the problem, replace the complete ADF assembly. See

complete assembly removal" on page

Note: Whenever the complete ADF assembly is replaced, it is

necessary to perform scanner registration. See

registration" on page

Sensor open (covered)

Diagnostic information