Lexmark X 850 Owners Manual

Repair information4-263
7500-XXX
2000-sheet dual input (TTM)–separation roll removal 
1.Remove the media tray assembly. 
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). 
A
C
B Front 

4-264MFP Service Manual 7500-XXX
4.Remove the separation roll (B). 
Note:  Do not touch the rubber surface of the feed roll (B). 
Note:  Before re-installing, do not touch the rubber surface of the separation roll (B).
A
Front
BC 

Repair information4-265
7500-XXX
2000-sheet dual input (TTM)–pick roll idler gear 33 tooth removal 
1.Remove the media tray assembly. 
2.Remove the pick roll. See “2000-sheet dual input (TTM)–pick roll removal” on page 4-266. 
3.Remove the pick roll drive gear 25 tooth. See “2000-sheet dual input (TTM)–pick roll drive gear 25 
tooth removal” on page 4-267. 
4.Remove the pick roll idler gear 33 tooth (A). 
Front
A 

4-266MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–pick roll removal 
1.Remove the media tray assembly. 
2.Move the 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 re-installing, do not touch the rubber surface of the pick roll (B).
C
B Hook
A
Front 

Repair information4-267
7500-XXX
2000-sheet dual input (TTM)–pick roll drive gear 25 tooth removal 
1.Remove the media tray assembly. 
2.Remove the pick roll. See “2000-sheet dual input (TTM)–pick roll removal” on page 4-266. 
3.Remove the pick roll drive gear 25 tooth (A). 
A
Front
B 

4-268MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–feed unit drive gear 27 tooth removal
1.Remove the media feed unit assembly. See “2000-sheet dual input (TTM)–media feed unit assembly 
removal (tray 3)” on page 4-243 or “2000-sheet dual input (TTM)–media feed unit assembly 
removal (tray 4)” on page 4-239.
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...

Repair information4-269
7500-XXX
2000-sheet dual input (TTM)–2TM/TTM left door assembly removal 
1.Open the 2TM/TMM left door assembly. 
2.Remove one screw securing the 2TM/TTM left door support strap (A). 
3.Remove one screw securing the bracket (B). 
4.Remove the bracket (B). 
5.Move the 2TM/TTM left door assembly (C) toward the right and outward in the direction of the arrow. 
6.Remove the 2TM/TTM left door assembly (C). 
A
C
BFront 

4-270MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–switch (2TM/TTM left door interlock) removal 
1.Open the left door assembly. 
2.Remove the screw securing the bracket (A). 
3.Remove the bracket (A). 
4.Disconnect the connector from the switch (2TM/TTM left door interlock) (B). 
5.Release the hooks securing the switch (2TM/TTM left door interlock) (B) to the bracket (A). 
6.Remove the switch (2TM/TTM left door interlock) (B). 
B
AFront 

Repair information4-271
7500-XXX
2000-sheet dual input (TTM)–tray 3 lift gear assembly removal  
1.Remove the rear cover. See “2000-sheet dual input (TTM)–rear cover removal” on page 4-212.
2.Remove the media feed unit 3 assembly. See “2000-sheet dual input (TTM)–media feed unit 
assembly removal (tray 3)” on page 4-243. 
3.Release the harness from the clamp of the tray 3 lift gear assembly (A). 
4.Remove two screws securing the tray 3 lift gear assembly (A). 
5.Remove the tray 3 lift gear assembly (A)....

4-272MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–tray 4 lift gear assembly removal 
1.Remove the rear cover. See “2000-sheet dual input (TTM)–rear cover removal” on page 4-212.
2.Remove the controller card assembly. See “2000-sheet dual input (TTM)–2TM/TTM controller card 
assembly removal” on page 4-274.
3.Release the two harnesses from the clamp of the tray 4 lift gear assembly (A). 
4.Remove two screws securing the tray 4 lift gear assembly (A). 
5.Remove the tray 4 lift gear assembly (A)....