Adf - Lexmark X850e Service Manual

7500-XXX
Scanner cooling fan
A fan that prevents overheating of the scanner controller card assembly and exposure lamp.
Scanner drive motor assembly
Exposure lamp
PS card assembly
(under the carriage)
Scanner cooling fan
ADF angle
actuator assembly
Sensor
(ADF angle)
Sensor (scanner HP)
Scanner controller card assembly

ADF

Sensor (ADF tray length 1)
Sensor (ADF tray length 2)
The document length in the slow scanning direction is detected by a combination of these two sensors.
Sensor (document tray width 1)
Sensor (document tray width 2)
Sensor (document tray width 3)
The document length in the fast scanning direction is detected by the combination of these three sensors
detecting the position of the tray on which the document is set.
Sensor (ADF document set)
A sensor that detects the presence or absence of a document on the ADF document tray.
(Presence: Beam is unshielded (unblocked). Absence: Beam is shielded (blocked).)
Pick roll position motor assembly
A stepping motor that moves the pick roll vertically.
1-46
MFP Service Manual
Exposure lamp
Switch (platen interlock)
Sensor (platen
length APS1)
Sensor (platen
length APS2)
CCD image
sensor
Lens