Lexmark X 850 Owners Manual

Repair information4-33
7500-XXX
Media feed lift motor removal
1.Remove the media feed unit. See “Media feed unit assembly 1 removal” on page 4-20 or “Media feed 
unit assembly 2 removal” on page 4-23.
2.Disconnect the harness from the media feed lift motor (A). 
3.Remove the two screws securing the media feed lift motor (A) to the media feed unit assembly (B). 
4.Remove the media feed lift motor (A). 
AB
Connector
Rear 

4-34MFP Service Manual 7500-XXX
Tray lift coupling assembly removal
1.Remove the MPF rear cover. See “MPF rear cover removal” on page 4-58.
2.Remove the MPF feed unit assembly. See “MPF feed unit assembly removal” on page 4-54.
3.Remove the printer left door. See “Printer left door assembly removal” on page 4-75.
4.Remove the vertical drive gear assembly. See “Vertical drive gear assembly removal” on page 4-67.
5.Remove the media feed unit assembly. See “Media feed unit assembly 1 removal” on page 4-20...

Repair information4-35
7500-XXX
Tray lift one way clutch / gear assembly removal
1.Remove the media feed unit assembly. Go to“Media feed unit assembly 1 removal” on page 4-20 or 
“Media feed unit assembly 2 removal” on page 4-23.
2.Remove the harness from the bracket (A). 
3.Remove the three screws securing the bracket (A) to the media feed unit assembly. 
4.Remove the bracket (A). 
Note:  The gears may become detached from the bracket (A). 
5.Remove the tray lift one-way clutch (B). 
Harness
Washer...

4-36MFP Service Manual 7500-XXX
6.Remove the tray lift one-way gear 24 tooth (C). 
Note:  Before reinstalling, ensure all gears and washers are securely attached to the bracket (A). 
Harness
A
RearC Washer 

Repair information4-37
7500-XXX
Media feed unit drive gear - 13 tooth removal
1.Remove the appropriate media feed unit assembly. See “Media feed unit assembly 1 removal” on 
page 4-20 or “Media feed unit assembly 2 removal” on page 4-23.
2.Remove the harness from the bracket (A). 
3.Remove the three screws securing the bracket (A) to the media feed unit assembly. 
4.Remove the bracket (A). 
Note:  Gears may become detached from the bracket (A). 
5.Remove the tray lift one-way clutch. See “Tray lift one...

4-38MFP Service Manual 7500-XXX
Media out actuator removal
1.Remove the appropriate media feed unit assembly. See “Media feed unit assembly 1 removal” on 
page 4-20 or “Media feed unit assembly 2 removal” on page 4-23.
2.Remove the two bosses on the media out actuator (A) to the media feed unit assembly. 
3.Remove the media out actuator (A). 
Front
Bosses
Lower viewA 

Repair information4-39
7500-XXX
Sensor (media level) removal
1.Remove the appropriate media feed unit assembly. See “Media feed unit assembly 1 removal” on 
page 4-20 or “Media feed unit assembly 2 removal” on page 4-23.
2.Disconnect the connector from the sensor (media level) (A). 
3.Release the hooks securing the sensor (media level) (A) to the media feed unit. 
4.Remove the sensor (media level) (A). 
Front
Harness
Hooks
Lower viewA 

4-40MFP Service Manual 7500-XXX
Sensor (media out) removal
1.Remove the appropriate media feed unit assembly. See “Media feed unit assembly 1 removal” on 
page 4-20 or “Media feed unit assembly 2 removal” on page 4-23.
2.Remove the media out actuator. See “Media out actuator removal” on page 4-38. 
3.Disconnect the connector from the sensor (media out) (A). 
4.Release the hooks securing the sensor (media out) (A) to the media feed unit. 
5.Remove the sensor (media out) (A). 
Front
Harness
A
Hooks
Lower...

Repair information4-41
7500-XXX
Sensor (pre-feed) removal
1.Remove the appropriate media feed unit assembly. See “Media feed unit assembly 1 removal” on 
page 4-20 or “Media feed unit assembly 2 removal” on page 4-23.
2.Release the hook securing the sensor (pre-feed) (A).
3.Remove the sensor (pre-feed) (A) from the feed unit front guide (B).
4.Disconnect the connector from the sensor (pre-feed) (A).
5.Remove the sensor (pre-feed) (A).
Front
A
B
Hook 

4-42MFP Service Manual 7500-XXX
Media feed unit drive gear - 28 / 21 tooth removal
1.Remove the appropriate media feed unit assembly. See “Media feed unit assembly 1 removal” on 
page 4-20 or “Media feed unit assembly 2 removal” on page 4-23.
2.Remove the harness from the bracket (A). 
3.Remove the three screws securing the bracket (A) to the media feed unit assembly. 
4.Remove the bracket (A). 
Note:  The gears may become detached from the bracket (A). 
5.Remove the media feed unit drive gear - 28 / 21...