Lexmark W820 Service Manual page 291

Removal
1.
Remove the Top Cover Assembly.
2.
Remove the Front Inner Cover.
3.
Remove the Right Cover.
4.
Remove four screws securing the ESS Assembly to the LVPS, and tilt the ESS
Assembly back and out of the way.
5.
Remove the eight screws securing the LVPS Cover to the LVPS and remove the
Cover.
6.
Disconnect J1, J3, J220, J502, J504, J505, and J506 from the LVPS.
7.
Remove the wire harnesses from the harness clips at the rear of the LVPS.
8.
Remove the cooling fan.
9.
Remove the five screws securing the LVPS to the printer frame.
10.
Remove the LVPS Assembly.
Replacement
1.
Position the LVPS Assembly on top of the printer frame, with the LVPS Fan facing
the rear of the printer.
2.
Route the four black and white Main Power Switch wires to the rear of the LVPS.
3.
Reinstall the cooling fan.
4.
Reconnect J1, J3, J220, J502, J504, J505, and J506 to the LVPS.
5.
Reinstall the wire harnesses into the harness clips at the rear of the LVPS.
6.
Slide the LVPS into place on the printer frame. Make sure you do not trap wires
between the LVPS and the printer frame. Align the LVPS so the five screw holes in
the LVPS line up with the five screw holes in the printer frame. Use five screws to
secure the LVPS to the printer frame.
7.
Reinstall the LVPS Cover and use eight screws to secure the Cover to the LVPS.
8.
Reinstall the ESS Assembly and use four screws to secure it to the top of the LVPS.
9.
Reinstall the Right Cover.
10.
Reinstall the Front Inner Cover.
11.
Reinstall the Top Cover Assembly.
4025-XXX
4-83
Repair Information