Lexmark X862de Service Manual page 72

7500-432, -632, and -832
Sensor (ADF pre-registration)
The ADF sensor (ADF pre-registration) is installed immediately upstream from the ADF transport roll assembly
to detect that the preceding document sheet has left the ADF transport roll assembly, triggering the pre-feed of
the next document sheet.
Sensor (ADF registration)
The sensor (ADF registration) is installed upstream from the ADF registration roll assembly to detect that the
preceding document sheet has left the ADF registration roll assembly, triggering the pre-registration of the next
document sheet.
Sensor (ADF inverter)
The sensor (ADF inverter) is installed immediately downstream from the ADF feed-out roll assembly to detect
the ejection of a document sheet.
ADF feed motor assembly
The feed motor assembly is a stepping motor that rotates the pick roll and feed roll in the reverse direction (CCW
direction) and rotates the ADF transport roll assembly in the normal direction (CW direction).
When this motor rotates in the reverse direction, the ADF transport roll assembly stops.
ADF registration motor
The registration motor is a stepping motor that rotates the ADF registration roll assembly, ADF feed-out roll
assembly, and ADF exit roll assembly in the reverse direction (CCW direction) and rotates the ADF exit roll
assembly in the normal direction (CW direction).
When this motor rotates in the normal direction, the ADF registration roll assembly and ADF feed-out roll
assembly run idle.
Inverter solenoid assembly
This solenoid nips or releases the ADF exit roll assembly and exit pinch roll.
Normally, the ADF exit roll assembly and exit pinch roll are nipped.
On: Released
Off: Nipped
1-48
MFP Service Manual
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