Oki B6500 Service Manual page 614

Chapter 9 ESS Options
6) Seat the SIMM Card into the socket on the ESS.
7) Raise the latches on the SIMM Card socket firmly capturing the Card (See figure below).
8) Replace the SHIELD ASSY WINDOW.
9) Replace the COVER RIGHT.
10) Plug the power cord into the AC outlet and turn the printer power ON.
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