Lexmark X 850 Owners Manual
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Repair information4-103 7500-XXX Sensor (fuser exit) removal 1.Open the printer left door assembly. 2.Remove the fuser unit. See “Fuser unit assembly removal” on page 4-104. 3.Disconnect the connector from the sensor (fuser exit) (A). 4.Remove the screw securing the bracket (B). 5.Remove the three hooks securing the sensor (fuser exit) (A) to the bracket (B). 6.Remove the sensor (fuser exit) (A). LeftB Hook A
4-104MFP Service Manual 7500-XXX Fuser unit assembly removal 1.Open the printer left cover assembly. 2.Loosen the two colored knobs securing the fuser unit (A). 3.Pull on the two colored handles to remove the fuser unit (A). A Left Handle Knob
Repair information4-105 7500-XXX Exit 1 media shift assembly removal 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Remove the rear motor cover. See “Rear motor cover removal” on page 4-11. 3.Remove the rear upper cover. See “Rear upper cover removal” on page 4-15. 4.Open the printer left door assembly. 5.Remove the exit 2 unit assembly. See “Exit 2 unit assembly removal” on page 4-315. 6.Open the printer front door assembly. See “Printer front door assembly removal” on page 4-6. 7.Remove the printer front left cover. See “Printer front left cover removal” on page 4-3. 8.Remove the two screws securing the bracket (A). 9.Remove the bracket (A) by lifting it upward. 10.Remove the exit 1 drive belt. See “Exit 1 drive belt removal” on page 4-112. 11.Disconnect the two connectors from the exit 1 media shift assembly (B). 12.Remove the two screws securing the exit 1 media shift assembly (B) to the printer. 13.Remove the exit 1 media shift assembly (B) by lifting it upward and outward in the direction of the arrow. Note: Disconnect the two connectors from the sensor (exit 1 media shift) and the sensor (exit 1 bin full). 14.Remove the two screws securing the exit 1 media shift assembly (B). A
4-106MFP Service Manual 7500-XXX 15.Remove the exit 1 media shift assembly (B) by lifting it upward and outward in the direction of the arrow. Note: When reinstalling the bracket (A), first release the hooks securing the plastic guide (C) that is attached to the bracket (A). •Remove the plastic guide (C) from the bracket (A). •Install the bracket (A). •Install the plastic guide (C) and the standard bin full exit 1 actuator shaft (D) at the same time. •Make sure the standard bin full exit 1 actuator shaft (D) operates smoothly without binding. LeftConnectors Left BB A D C
Repair information4-107 7500-XXX Media shift motor removal 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Remove the rear motor cover. See “Rear motor cover removal” on page 4-11. 3.Remove the rear upper cover. See “Rear upper cover removal” on page 4-15. 4.Open the printer left door assembly. 5.Remove the exit 2 unit assembly. See “Exit 2 unit assembly removal” on page 4-315. 6.Open the printer front door assembly. 7.Remove the printer front left cover. See “Printer front left cover removal” on page 4-3. 8.Remove the exit 1 media shift assembly. See “Exit 1 media shift assembly removal” on page 4-105. 9.Disconnect the connector from the media shift motor (A). 10.Remove the two screws securing the media shift motor (A) to the exit 1 media shift assembly (B). 11.Remove the media shift motor (A). Note: Before reinstalling, secure the media shift motor (A) harness to the clamps on the exit 1 media shift assembly (B) to prevent damage. AConnector Clamps B Left
4-108MFP Service Manual 7500-XXX Sensor (exit 1 media shift) removal 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Remove the rear motor cover. 3.Remove the rear upper cover. See “Rear upper cover removal” on page 4-15. 4.Open the printer left door assembly. 5.Remove the exit 2 unit assembly. See “Exit 2 unit assembly removal” on page 4-315. 6.Open the printer front door assembly. 7.Remove the printer front left cover. See “Printer front left cover removal” on page 4-3. 8.Remove the exit 1 media shift assembly. See “Exit 1 media shift assembly removal” on page 4-105. 9.Remove the media shift motor. See “Media shift motor removal” on page 4-107. 10.Remove the two screws securing the bracket (A) to the exit 1 media shift assembly (B). 11.Remove the bracket (A). 12.Release the hooks securing the sensor (exit 1 media shift) (C) to the bracket (A). 13.Remove the sensor (exit 1media shift) (C). B C A Hooks Left Hook
Repair information4-109 7500-XXX Sensor (exit 1 bin full) removal 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Remove the rear motor cover. See “Rear motor cover removal” on page 4-11. 3.Remove the rear upper cover. See “Rear upper cover removal” on page 4-15. 4.Open the printer left door assembly. 5.Remove the exit 2 unit assembly. See “Exit 2 unit assembly removal” on page 4-315. 6.Open the printer front door assembly. 7.Remove the printer front left cover. See “Printer front left cover removal” on page 4-3. 8.Remove the exit 1 media shift assembly. See “Exit 1 media shift gear removal” on page 4-110. 9.Release the hooks securing the sensor (exit 1 bin full) (A) to the exit 1 media shift assembly (B). 10.Remove the sensor (exit 1 bin full) (A). B Hook Hooks Left A
4-110MFP Service Manual 7500-XXX Exit 1 media shift gear removal 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Remove the rear motor cover. See “Rear motor cover removal” on page 4-11. 3.Remove the rear upper cover. See “Rear upper cover removal” on page 4-15. 4.Open the printer left door assembly. 5.Remove the exit 2 unit assembly. See “Exit 2 unit assembly removal” on page 4-315. 6.Open the printer front door assembly. 7.Remove the printer front left cover. See “Printer front left cover removal” on page 4-3. 8.Remove the exit 1 media shift assembly. See “Exit 1 media shift assembly removal” on page 4-105. 9.Remove the exit 1 media shift motor. See “Media shift motor removal” on page 4-107. 10.Remove the 2 screws securing the bracket (A) to the exit 1 media shift assembly (B). 11.Remove the bracket (A) from the exit 1 media shift assembly (B). 12.Slide the shift assembly (C) in order to release the shift assembly boss from the exit 1 media shift gear (D). 13.Remove the exit 1 media shift gear (D) by lifting it upward. AB Left
Repair information4-111 7500-XXX D Rear B Boss Right C
4-112MFP Service Manual 7500-XXX Exit 1 drive belt removal 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Remove the rear motor cover. See “Rear motor cover removal” on page 4-11. 3.Remove the exit 2 unit assembly. See “Exit 2 unit assembly removal” on page 4-315. 4.Release the hook on the drive belt flange (A). 5.Remove the drive belt flange (A). 6.Remove the exit 1 drive belt (B) from the drive pulley - 25 tooth (C). Note: The drive pulley -25 tooth (C) may become detached. 7.Remove the exit 1 drive belt (B) from the exit 1 media shift assembly (D). Note: Press on the exit 1 drive belt (B) while slowly turning the motor (E) by hand. C Rear B D Left side view E A Hook B