Lexmark 4039-1XX - Manual (Page 104)

90 Service Manual
4039-1XX
System Board Removal
1. Check the page count and write it down so you can set the new
system board.
2. Turn the printer off.
3. Remove the right cover.
4. Remove the outer EMC shield by pressing down on the two
bottom tabs, slide the shield forward, then down (10P has no
outer EMC shield).
5. Disconnect all the external connectors from the system board
and remove the option cards.
6. Remove the system board mounting hardware [A].
7. Release the system board standoff.
8. Remove screw [B]. and remove the system board.
Note: If system board is being replaced, remove the ROM SIMM
and all options for installation on the new system board.