Lexmark X 850 Owners Manual

Repair information4-253
7500-XXX
2000-sheet dual input (TTM)–media out actuator 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 two bosses on the media out actuator (A) from the media feed unit assembly. 
3.Remove the media out actuator (A). 
Front
Bosses
Lower viewA 

4-254MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–sensor (media level) 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.Disconnect the connector from the sensor (media level) (A). 
3.Release the hooks securing the sensor (media level) (A) to the media feed unit assembly. 
4.Remove the sensor (media level) (A)....

Repair information4-255
7500-XXX
2000-sheet dual input (TTM)–sensor (media out) 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 media out actuator. See “2000-sheet dual input (TTM)–media out actuator removal” on 
page 4-253.
3.Disconnect the connector from the sensor (media out) (A). 
4.Release the hooks...

4-256MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–sensor (pre-feed) 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 sensor (pre-feed) (A) from the feed unit front guide (B). 
3.Disconnect the connector from the sensor (pre-feed) (A). 
Front
A
B
Hook 

Repair information4-257
7500-XXX
2000-sheet dual input (TTM)–media feed unit drive gear 28 / 21 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...

4-258MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–media feed unit drive gear 29 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...

Repair information4-259
7500-XXX
2000-sheet dual input (TTM)–feed 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 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). 
Note:  Before re-installing, do not touch the rubber surface of the feed roll (B). 
Front
A HookC
B 

4-260MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–feed roll one-way clutch removal 
1.Remove the media tray assembly. 
2.Remove the feed roll. See “2000-sheet dual input (TTM)–feed roll removal” on page 4-259.
3.Remove the feed roll one-way clutch (A) from the shaft (B). 
A
Front
B 

Repair information4-261
7500-XXX
2000-sheet dual input (TTM)–one-way 22 tooth removal 
1.Remove the media tray assembly. 
2.Remove the feed roll. See “2000-sheet dual input (TTM)–feed roll removal” on page 4-259.
3.Remove the feed roll one-way clutch. See “2000-sheet dual input (TTM)–feed roll one-way clutch 
removal” on page 4-260.
4.Remove the feed roll one-way gear 22 tooth (A). 
A
Front
B 

4-262MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–separation roll one-way friction clutch removal 
1.Remove the media tray assembly. 
2.Remove the separation roll. See “2000-sheet dual input (TTM)–separation roll removal” on 
page 4-263.
3.Remove the separation roll spacer (A). 
4.Remove the separation roll one-way friction clutch (B). 
Front
AC B