Lexmark Optra S 1620 Manual

							Repair Information4-48
4059-XXX
Operator Panel
1. Remove the upper front cover.
2. Gently press the three operator panel lens cover retaining tabs
(A) and remove the lens cover. The button membrane is free to
remove from the assembly.
3. Disconnect the operator panel cable and remove the operator
panel board. 
						

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Operator Panel Cable/Cover Open Switch Assembly
Note:Pay careful attention to the cable routing through the printer
before you remove the operator panel cable/cover open switch
assembly.
1. Remove the left door, left cover, upper front cover, outer EMC
shield and inner EMC shield.
2. Disconnect the operator panel/cover open switch cable from the
engine board.
3. Release the cables from the three cable retainers.
4. Cut and remove the wire tie on the upper front cover hinge pivot
arm.
5. Remove the operator panel and cover open switch bracket. Pull
the cables through the rectangular hole in the hinge pivot arm.
Note:If a large snap-on torroid is present on the old cable,
remove the torroid before pulling the cables through the hinge
pivot arm.
6. Plug the new operator panel cable into the operator panel and
snap the new cover open switch cable into the bracket
assembly.
Note:If you remove a large snap-on torroid from the old cable,
you must break the small torroid from the new cable assembly
and replace it with the snap-on torroid. Be careful not to
damage the cable.
7. Route the cables and torroid through the rectangular window in
the cover hinge pivot arm.
8. Snap the operator panel and the cover open switch bracket
assembly into the upper front cover.
9. Twist the cables together and attach to the cover hinge pivot
arm with a wire tie. Be sure the torroid is on the opposite end of
the cables near the engine board connectors.
10. Route the cables through the printer and down the inside of the
engine board shield.
11. Plug the cables into the engine board connectors. 
						

							Repair Information4-50
4059-XXX
Optional 250/500 Paper Tray Assembly
Note:Remove the printer and other paper feed options to access
the failing optional paper tray assembly.
Paper Tray Compensator Assembly
1. Remove the printer and other paper feed options.
2. Disconnect the compensator assembly bias spring from the tray
frame.
3. Disconnect the compensator assembly motor cable.
4. Remove the three compensator assembly mounting screws and
remove the compensator assembly.
Paper Tray Frame Assembly
1. Remove the compensator assembly.
2. Release the paper pass through sensor from its retaining tabs.
3. Release the frame assembly from the front and rear retaining
tabs and remove the paper tray frame assembly.
Paper Tray Board
1. Remove the paper tray frame assembly.
2. Disconnect all cables from the paper tray board.
3. Remove the three paper tray board mounting screws and
remove the board.
Note:Reinstall with the paper out sensor flag positioned in the
sensor slot on the paper tray board.
Paper Tray Paper Out Sensor Flag
1. Remove the paper tray frame assembly.
2. Remove the paper tray board.
3. Remove the paper out sensor flag.
Paper Size Spring Comb
1. Remove the paper tray board.
2. Remove the paper size spring comb mounting screw and
removethespringcomb. 
						

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Outer EMC Shield
1. Remove the left door.
2. Loosen the six outer EMC shield mounting screws (A) and
remove the shield. 
						

							Repair Information4-52
4059-XXX
Paper Alignment Assembly
1. Remove the upper paper deflector assembly.
2. Remove the inner paper deflector assembly.
3. Release the input paper sensor from its mounting and remove.
4. Remove the left door.
5. Remove the two paper alignment assembly mounting screws
(A) located inside the printer. 
						

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6. Locate the paper alignment assembly reference adjustment
screw (B) through the left frame and remove the screw.
7. Remove the paper alignment assembly.
Note:Do the“Paper Alignment Assembly Adjustment” on page 4-5
when you reinstall the assembly.
Paper Input Sensor
1. Remove the inner paper deflector assembly.
2. Disconnect the paper input sensor cable from the input sensor.
3. Release the input paper sensor from its mounting and remove. 
						

							Repair Information4-54
4059-XXX
Paper Size Sensing Board
1. Disconnect the paper size sensing board cable from the board.
2. Remove the two paper size sensing board mounting screws (A).
3. Remove the paper size sensing board.
Pick Roll
1. Remove the upper paper deflector.
2. Release the pick roll retaining tab and slide the pick roll off the
shaft. 
						

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Printhead
1. Remove the laser assembly cover.
2. Disconnect the printhead cables (A) from the printhead
assembly.
3. Remove the three printhead mounting screws (B) and remove
the printhead.
Note:Do the“Printhead Assembly Adjustment” on page 4-4
whenever you remove or replace the printhead assembly or loosen
the mounting screws. 
						

							Repair Information4-56
4059-XXX
Redrive Assembly
1. Open the redrive door assembly, remove the restraint strap
mounting screw and remove the door assembly.
2. Remove the redrive exit cover.
3. Remove the two redrive assembly mounting screws (A).
4. Release the two redrive assembly mounting latches (B) and
remove the redrive assembly. 
						

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Right Side Frame
1. Remove the right side cover.
2. Remove the LVPS.
3. Remove the multipurpose tray assembly.
4. Remove the auxiliary fan assembly.
5. Disconnect the auto compensator arm bias spring from the right
side frame.
6. Remove the toner sensor mounting screw (A), disconnect the
sensor cable and remove the toner sensor.
7. Remove the right side frame mounting screws (B) and remove
the right side frame.