Lexmark X 850 Owners Manual

Repair information4-43
7500-XXX
Media feed unit drive gear - 29 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 - 29 tooth (B)....

4-44MFP Service Manual 7500-XXX
6.Remove the media feed unit drive gear - 29 tooth (B). 
Note:  Before reinstalling, ensure all gears and washers are securely attached to the bracket (A).
Harness
Clamp
A
Rear
Washer
B Rear 

Repair information4-45
7500-XXX
Feed roll removal
1.Remove the media tray. 
2.Move the feed unit front guide (A) in the direction of the arrow.
3.Release the hook securing the feed roll (B) to the shaft (C).
4.Remove the feed roll (B).
Note:  Do not touch the rubber surface of the feed roll (B).
Front
A HookC
B 

4-46MFP Service Manual 7500-XXX
Feed roll one way clutch removal
1.Remove the media tray. 
2.Remove the feed roll. See “Feed roll removal” on page 4-45.
3.Remove the feed roll one way clutch (A) from the shaft (B). 
A
Front
B 

Repair information4-47
7500-XXX
Feed roll one way gear 22 tooth removal
1.Remove the media tray. 
2.Remove the feed roll. See “Feed roll removal” on page 4-45.
3.Remove the feed roll one way clutch. See “Feed roll one way clutch removal” on page 4-46.
4.Remove the feed roll one-way gear 22 tooth (A) from the shaft (B). 
A
Front
B 

4-48MFP Service Manual 7500-XXX
Separation roll one way friction clutch removal
1.Remove the media tray. 
2.Remove the separation roll. See “Separation roll removal” on page 4-49.
3.Remove the separation roll spacer (A) from the shaft (B). 
4.Remove the separation roll one-way friction clutch (C) from the shaft (B). 
Front
AC B 

Repair information4-49
7500-XXX
Separation roll removal
1.Remove the media tray. 
2.Move the feed unit front guide (A) in the direction of the arrow. 
3.Release the hook securing the separation roll (B) to the shaft (C). 
4.Remove the separation roll (B). 
Note:  Do not touch the rubber surface of the feed roll (B). 
Note:  Before reinstalling, do not touch the rubber surface of the separation roll (B).
A
C
B Front 

4-50MFP Service Manual 7500-XXX
Pick roll idler gear 33 tooth removal
1.Remove the media tray. 
2.Release the pick roll. See “Pick roll removal” on page 4-51.
3.Remove the pick roll drive gear - 25 tooth. See “Pick roll drive gear 25 tooth removal” on page 4-52.
4.Remove the pick roll idler gear - 33 tooth (A). 
Front
A 

Repair information4-51
7500-XXX
Pick roll removal
1.Remove the media tray. 
2.Move the media feed unit front guide (A) in the direction of the arrow. 
3.Release the hook securing the pick roll (B) to the shaft (C). 
4.Remove the pick roll (B). 
Note:  Do not touch the rubber surface of the feed roll (B). 
Note:  Before reinstalling, do not touch the rubber surface of the pick roll (B).
C
B Hook
A
Front 

4-52MFP Service Manual 7500-XXX
Pick roll drive gear 25 tooth removal
1.Remove the media tray. 
2.Remove the pick roll. See “Pick roll removal” on page 4-51. 
3.Remove the pick roll drive gear 25 tooth (A) from the shaft (B). 
A
Front
B