Lexmark W820 Service Manual page 303

Removal
1.
Remove the interface cables from the connectors on the ESS Drawer Panel.
2.
Loosen the two thumbscrews that secure the ESS Drawer Panel to the ESS Box.
3.
Slide the ESS out of the ESS Box.
WARNING: Wear an electrostatic wrist strap and use caution when working with the
ESS PWB. Static electricity can damage the sensitive electronics of the ESS. Handle the
ESS PWB by the edges of the PWB or by the Drawer Panel. Never touch any of the ICs
that are mounted on the PWB.
4.
Place the ESS PWB and the attached Drawer Panel on a flat, non-conductive
surface.
5.
Remove the two nuts and four washers that secure the Drawer Panel to the interface
plug on the ESS PWB.
6.
Remove the three screws securing the Drawer Panel to the ESS PWB, and remove
the Panel.
Replacement
1.
Place the ESS PWB on a flat, non-conductive surface.
2.
Position the Drawer Panel so the three legs are under the ESS PWB and the
interface plug fits through the cutout in the Panel.
3.
Use two nuts and four washers, two per nut, to secure the Panel to the interface
plug.
4.
Use three screws to secure the Drawing Panel to the ESS.
5.
Slide the ESS into the ESS Box.
6.
Tighten the two thumbscrews that secure the ESS Drawer Panel to the ESS Box.
7.
Reconnect the interface cables to the connectors on the Drawer Panel.
4025-XXX
4-95
Repair Information