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...

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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....

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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. 

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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
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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
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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.