Lexmark Optra S 1620 Manual

							Repair Information4-18
4059-XXX
Laser Assembly Cover
1. Remove the left door.
2. Remove the left cover.
3. Remove the right cover.
4. Remove the rear paper deflector.
5. Press the fuser wiper cover latch and remove the cover.
6. Remove the paper full sensor flag assembly from the mounting
bracket.
7. Remove the five screws (A) mounting the laser assembly cover
and remove the cover.
Center Pan Assembly
1. Remove the left and right side frames.
2. Remove the pan assembly. 
						

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Controller Board
1. Remove the inner EMC shield.
2. Remove the controller board mounting screws (A).
3. Remove the two controller board parallel port mounting screws
(B).
4. Remove the serial port mounting screws if present.
5. Remove the controller board. 
						

							Repair Information4-20
4059-XXX
Developer Drive Assembly
1. Remove the inner EMC shield.
2. Remove the three developer drive assembly mounting screws
(A).
3. Remove the developer drive assembly.
Note:Be sure the developer drive assembly wheel aligns with the
hub on the main drive assembly when reinstalling the assembly. 
						

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Duplex Board
1. Lift the base printer from the duplex assembly.
2. Remove the four duplex board cover mounting screws.
3. Gently disconnect the cables from the duplex board. Use
caution to avoid damage to the cables and connectors.
4. Remove the two duplex board mounting screws and remove the
duplex board.
Duplex Front Cover Assembly
1. Lift the base printer from the duplex assembly.
2. Remove the four duplex board cover mounting screws and
disconnect the duplex cover door switch cable at connector J6.
3. Position the duplex assembly on its side.
4. Gently release the three front cover assembly latches from the
bottom of the duplex assembly.
5. Remove the duplex front cover assembly.
Duplex Front Cover Door
1. Remove the duplex front cover assembly.
2. Holding the front of the assembly away from you, open the
cover door and gently pry the left side door pivot from the
mounting.
3. Move the cover door to the left to clear the right door pivot from
the mounting and remove the duplex front cover door.
Duplex Front Cover Door Switch
1. Remove the duplex front cover assembly.
2. Remove the four duplex board cover screws and disconnect the
cover door switch cable at connector J6.
3. Loosen the cover door switch mounting screw and remove the
switch.
Note:Be sure the cover door switch is properly positioned in the
mounting slots when reinstalling to allow the duplex cover door
actuator arm to operate the switch. 
						

							Repair Information4-22
4059-XXX
Duplex Motor
1. Remove the duplex front cover door.
2. Gently disconnect the cables from the duplex board. Use
caution to avoid damage to the cables and connectors.
3. Remove the four mounting screws from the left and right return
guides and remove the guides.
4. Remove the four mounting screws on the right side of the
duplex frame assembly.
5. Position the duplex assembly on its side.
6. Gently release the center drive deflector assembly latch from
the bottom front left side of the duplex assembly.
7. Remove the center drive deflector assembly and the frame
assembly from the duplexer.
8. Remove the two duplex motor mounting screws and remove the
motor.
Note:Pay attention to cable routing to avoid pinching or cutting
wires during reassembly. Ensure cables are securely placed into the
cable retaining tabs. Do the adjustment“Duplex Motor Drive Belts”
on page 4-2whenever you remove or replace the duplex motor. 
						

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Engine Board
1. Remove the inner EMC shield.
2. Disconnect all cables from the engine board.
3. Remove the four engine board mounting screws (A).
4. Remove the engine board cage mounting screw (B) from the
main drive motor assembly.
5. Remove the engine board.
Note:Anytime the engine board is replaced, the Configuration ID
must be reset in NVRAM on the new engine board. Go to“Setting
Configuration ID” on page 3-20.
EP Frame Assembly
1. Remove the left and right side frames.
2. Remove the EP frame assembly. 
						

							Repair Information4-24
4059-XXX
Fans
Auxiliary Fan (Models 2420/2450/2455/3455)
1. Remove the right cover.
2. Remove the inner EMC shield.
3. Remove the fuser wiper cover.
4. Disconnect the auxiliary fan cable from the engine board at
connector J7.
5. Note the routing of the auxiliary fan cable (A) and remove the
fan (B). 
						

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Main Fan
1. Remove the top rear cover.
2. Remove the inner EMC shield.
3. Note the routing of the main fan cable (A) and disconnect the
cable from the engine board at connector J1.
4. Release the four latches (B) and remove the fan from the left
side frame. 
						

							Repair Information4-26
4059-XXX
Caution: Be sure the fuser assembly has cooled before working
on any of the fuser FRUs.
Note:You must replace cable ties (B) if removed during the fuser
removals. The cable ties prevent the fuser wiring from obstructing
the paper path through the fuser assembly.
Fuser
1. Remove the redrive assembly.
2. Remove the two fuser mounting screws (A).
3. Remove the fuser ground wire and remove the fuser assembly. 
						

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Fuser Board
1. Remove the fuser assembly.
2. Disconnect the cables (A) from the fuser board.
3. Remove the fuser board mounting screw (B).
4. Release the fuser board from the standoff tab (C) and lift the
fuser board from the fuser assembly.