Lexmark X 850 Owners Manual

Repair information4-243
7500-XXX
2000-sheet dual input (TTM)–media feed unit assembly removal (tray 3) 
1.Pull out the tray 3 assembly. 
2.Pull out the tray 4 assembly. 
3.Open the 2TM/TTM left door assembly. 
4.Remove one screw securing the 2TM/TTM left door support strap (A). 
5.Release the bosses on both sides securing the vertical turn guide (B). 
6.Remove the vertical turn guide (B). 
7.Release the bosses on both sides securing the upper vertical turn guide (C). 
8.Remove the upper vertical turn...

4-244MFP Service Manual 7500-XXX
9.Release the harness from the clamp. 
10.Disconnect the connector from the machine. 
Front
Connector
Clamps 

Repair information4-245
7500-XXX
11.Remove three screws securing the media feed unit assembly (D). 
12.Remove the media feed unit assembly (D) by pulling outward.
13.Remove two screws securing the rear bracket (E) to the media feed unit assembly (D). 
14.Remove the rear bracket (E). 
Front
Connector
Clamps
E
Connector
D 

4-246MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–2TM/TTM media transport roll assembly removal 
1.Open the left door assembly. 
2.Remove two screws securing the bracket (A). 
3.Disconnect the connector to the sensor (tray 3 feed-out) (B). 
4.Remove the bracket (A). 
5.Remove the large e-clip on the left securing the 2TM/TTM media transport roll assembly (C). 
6.Slide the bushing (D) to the right. 
7.Move the 2TM/TTM media transport roll assembly (C) leftward and outward in the direction of...

Repair information4-247
7500-XXX
2000-sheet dual input (TTM)–sensor (tray 3 feed-out) removal  
1.Open the left door assembly. 
2.Remove two screws securing the bracket (A). 
3.Disconnect the connector to the sensor (tray 3 feed-out) (B). 
4.Remove the bracket (A). 
5.Release the hooks securing the sensor (tray 3 feed-out) (B) to the bracket (A). 
6.Remove the sensor (tray 3 feed-out) (B). 
AConnector
Hook
B
Actuator 

4-248MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–media feed lift motor 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 harness from the media feed lift motor (A). 
3.Remove the two screws securing the media feed lift motor to the media feed unit assembly (B). 
4.Remove the media feed lift motor...

Repair information4-249
7500-XXX
2000-sheet dual input (TTM)–lift coupling assembly 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 bracket (A). 
3.Remove three screws securing bracket (A) to the media feed unit assembly. 
4.Remove bracket (A).
Note:  The gears may become detached from bracket (A)....

4-250MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–one-way clutch / gear assembly 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 information4-251
7500-XXX
6.Remove the tray lift one-way gear 24 tooth (C). 
Note:  Before re-installing, ensure all gears and washers are securely attached to the bracket (A). 
Harness
A
RearC Washer 

4-252MFP Service Manual 7500-XXX
2000-sheet dual input (TTM)–media feed unit drive gear 13 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:  Gears may become...