Oki LP-1040 Maintenance Manual page 292

(1) Removing the top cover
Note
 When removing the top cover for maintenance, always remove the toner cartridge.
 Cover the area with plastic or some other type of cover to prevent dirt and other particles from
entering the Printer.
<Removal>
1.
Open the toner door and remove the toner
cartridge.
2.
Remove the four screws as shown in the
figure.
3.
Pull up slightly on the rear.
Chapter 9 Parts Disassembly, Assembly, and Replacement
Top Cover
9-5