Lexmark X945E, Service Manual

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General information
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Names and functions of components
The sections below describe the functions of main components of the scanner.
Scanner unit assembly
Sensor (platen length APS 1)
Sensor (platen length APS 2)
The document length in the slow scanning direction is detected by a combination of the two reflector sensors.
Switch (platen interlock)
A switch that detects whether the ADF is open and determines the timing of platen document size detection.
Sensor (ADF angle)
A sensor that detects the angle at which the ADF opens and determines the timing of platen document size
detection.
Scanner drive motor assembly
A stepping motor that drives the full rate carriage and the half rate carriage.
Sensor (scanner HP)
A sensor that detects the HP position of the full rate carriage.
The rear portion of the full rate carriage frame functions as an actuator that shields the sensor (scanner HP) for
detection.
Scanner exposure lamp
A xenon lamp to which the document is exposed.
Exposure lamp PS card assembly
A card that switches on/off the exposure lamp according to the signal from the scanner controller card assembly.
Lens assembly
A kit that consists of a lens used to read the document and a CCD image sensor used to photoelectrically
convert the image data read from the document.
Scanner controller card assembly
A card that controls the scanner section.
Scanner cooling fan