Page: 40Service Guide OL830Chapter 3 Maintenance & Disassembly3.2.01 Upper Cover1. Power OFF the printer and unplug the AC power cord from the outlet.2. Remove the paper cassette (1), interface cable (2), and font card (option) (3).3. Lift the operator panel assembly (4) at its bottom and remove it.4. Remove connecting cable (5) from the connector J1 (6) of the LLJA Board (7).5. Press the "OPEN" button (8) and open the stacker cover (9).6. Remove the two screws (10).7. Lift the front side of the upper cover, and disconnect its engagement with the two tabson the rear of the lower unit (11), by pivoting the upper cover upward and back.P/N 53338201 OL830 Upper CoverNOTES:When installing the upper cover, first set the square holes on the back of the upper coverover the two tabs on the rear of the lower unit , then lower the cover.Option CoverThe Emulation Board (APSH) which adds Hewlett-Packard Laser Jet II ,and Diablo emulation, is astandard feature and is present in the printer when shipped. The optional RAM (REXM) andInterface (APSR) Boards, are operator installable by removing the Option Cover (A). To removethe Option Cover, first make sure the printer is turned off and unplugged, then press the releasebutton (B) and open the top cover (C). Remove the Option Cover by pulling up gently on its insideedge. Close the top cover, then install the boards. Remember, the components on the boards aresensitive to static electricity--handle them carefully.
