Oki LE840 Guide De L'utilisateur page 61

2. PRINTER SETUP
(7) Select [Remove driver and driver package.] and
then click [OK].
(8) Click [Yes].
(9) Click [Delete].
(10) Click [OK] after driver removal completes and
then click [Close] to exit the [Print Server
Properties] dialog box.
Then, turn off the printer and restart your
computer.
E2-47
2.7 Installing the Printer Drivers