Lexmark 7000 Color Jetprinter Service Manual - Page 56

Small Feed Roll Shaft, Rollers & Paper Flap Remova..., Star Roller Removal, System Board Removal

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4092-001 Small Feed Roll Shaft, Rollers & Paper Flap Removal 1. Remove the front cover. 2. Remove the rear cover. 3. Remove the carrier frame assembly. 4. Spread the left and right side frames apart far enough to remove the small feed roll shaft assembly. Star Roller Removal 1. Remove the front cover. 2. Remove the three screws from the star roller assembly and remove the assembly. System Board Removal 1. Remove the front cover. 2. Unlock the three printhead cable connectors and disconnect the printhead cables from the system board. 3. Disconnect the other cables from the system board. 4. Gently release the tension on the encoder strip by flexing the encoder strip tensioner and remove the encoder strip from the left side only. 5. Remove the three screws securing the system board to the carrier frame and remove the system board. Note the routing of the paper feed motor cable. Pull the EOF flag out of the sensor while removing the system board. Note: When replacing the system board, the head to head and bidirectional printing alignments will be reset to factory defaults. The user, through the Printer Control program, is directed to perform these alignments. When reinstalling the system board, it is easier to insert the printhead cables in the three connectors prior to installing the board. 4-21

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4-21
4092-001
Small Feed Roll Shaft, Rollers & Paper Flap Removal
1.
Remove the front cover.
2.
Remove the rear cover.
3.
Remove the carrier frame assembly.
4.
Spread the left and right side frames apart far enough to
remove the small feed roll shaft assembly.
Star Roller Removal
1.
Remove the front cover.
2.
Remove the three screws from the star roller assembly and
remove the assembly.
System Board Removal
1.
Remove the front cover.
2.
Unlock the three printhead cable connectors and disconnect the
printhead cables from the system board.
3.
Disconnect the other cables from the system board.
4.
Gently release the tension on the encoder strip by flexing the
encoder strip tensioner and remove the encoder strip from the
left side only.
5.
Remove the three screws securing the system board to the car-
rier frame and remove the system board. Note the routing of the
paper feed motor cable. Pull the EOF flag out of the sensor
while removing the system board.
Note:
When replacing the system board, the head to head and
bidirectional printing alignments will be reset to factory defaults. The
user, through the Printer Control program, is directed to perform
these alignments. When reinstalling the system board, it is easier to
insert the printhead cables in the three connectors prior to installing
the board.