Lexmark X644E Service Manual - Page 135
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7002-xxx FRU 5 Interval sensor-electrical checks Action 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). 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 CN10-Pin 8 +0.03 V dc CN10-Pin 9 +5.0 V dc Note: All voltages are approximate values. 0 V dc +5.0 V dc +5.0 V dc 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. Diagnostic information 2-97
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