Lexmark Optra S 1620 Manual

Repair Information4-28
4059-XXX
Fuser Cover
1. Remove the fuser assembly.
2. Note the thermistor cable routing and disconnect the cable from
the fuser board.
3. Disconnect the thermal fuse cable from the left and right lamp
brackets (A).
4. Loosen the left and right lamp bracket mounting screws (B) and
remove the thermal fuse cable from the bracket.
5. Remove the left and right fuser cover mounting screws (C) and
lift the cover from the fuser assembly. 

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Fuser Detack Fingers
1. Remove the fuser assembly.
2. Remove the fuser cover assembly.
3. Remove the fuser detack housing assembly.
4. Gently pry the detack finger and spring (A) from the housing
assembly.
Fuser Detack Housing Assembly
1. Remove the fuser assembly.
2. Remove the fuser cover assembly.
3. Remove the fuser lamp.
4. Gently apply outward pressure on the left and right fuser side
frames (B) to release the detack housing assembly. 

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Fuser Transfer Plate
1. Remove the upper paper deflector.
2. Remove the fuser transfer roll.
3. Remove the inner paper deflector.
4. Lift the left side of the fuser transfer plate (A) and move the plate
to the left to clear the right side from its mounting.
5. Remove the fuser transfer plate. 

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Fuser Envelope Conditioner Solenoid
The fuser solenoid is in all the models except 1250 and 1255.
1. Remove the fuser assembly.
2. Remove the solenoid mounting screw (A).
3. Disconnect the solenoid link (B).
4. Remove the solenoid from the fuser assembly.
Note:Do the“Fuser Solenoid Adjustment” on page 4-3whenever
you replace the fuser solenoid.
Fuser Exit Flag Assembly
1. Remove the fuser assembly.
2. Remove the fuser exit flag assembly. 

Repair Information4-32
4059-XXX
Fuser Exit Roll Assembly
1. Remove the fuser assembly.
2. Press the exit shaft bushing retaining tabs and slide the left and
right bushings (A) toward the inside of the fuser assembly.
3. Remove the exit roll assembly from the slots in the side frame.
Note:Be sure the fuser idler gear (B) is in place and the bushing
alignment tab is rotated to the correct position in the side frame slot
as you snap each bushing in place when reinstalling the exit roll
assembly. 

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Fuser Lamp
1. Remove the fuser assembly.
2.Caution:Hold the left lamp bracket and carefully remove the
two mounting screws. There is pressure against the other end
of the lamp therefore care must be used when removing the
lamp from the fuser. Grip the lamp by the ceramic end piece and
remove it from the fuser assembly. Be careful not to touch the
glass as skin oils and acids can reduce the life of the lamp.
3. Remove the fuser lamp.
Note:Be sure to position the left lamp...

Repair Information4-34
4059-XXX
High Voltage Power Supply
1. Remove the inner paper deflector.
2. Remove the toner sensor cable from the retainer (A) on the front
of the HVPS.
3. Remove the right side cover.
4. Disconnect the JVPS cable from the HVPS at connector (C).
5. Disconnect the transfer roll cable from the HVPS board.
Note:Use caution when disconnecting the cable from the
transformer on the HVPS. The cable and connector can be
easily damaged.
6. Remove the HVPS mounting screw (B).
7. Slide the...

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Inner EMC Shield
1. Remove the left door.
2. Remove outer EMC shield.
3. Remove all option boards from the connector board slots.
4. Remove the inner EMC shield mounting screws (A).
5. Remove the inner EMC shield. 

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Inner Paper Deflector Assembly
1. Remove the paper tray.
2. Remove the upper deflector assembly.
3. Place the printer on its side.
4. Remove the lower deflector assembly.
5. Gently pry the inner paper deflector from the left and right
mounting posts (A) located on the bottom of the printer and
remove the deflector. 

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Integrated Tray Compensator Assembly
1. Remove the paper tray.
2. Remove the left door.
3. Remove the inner EMC shield.
4. Disconnect the compensator motor cable from the engine board
at connector J18.
5. Place the printer on its side.
6. Locate the integrated tray compensator assembly (E) on the
bottom of the printer and disconnect the compensator arm bias
spring (A) from the frame.
7. Disconnect the compensator sensor cable (B) from the
assembly.
8. Remove the...