Page: 37Service Guide OL400Chapter 3 Maintenance & Disassembly3.2.01 Upper Cover1. Turn the power switch OFF and unplug the AC power cord from the outlet and the printerpower receptacle at the rear of the printer.2. Remove the paper tray (1), interface cable (2), and font card (3) (if installed).3. Lift the operator panel assembly (4) at its bottom and detach it.4. Pull on the locking collar and then detach the connecting cable (5) from connector J1 (6) of theoperator panel PCB (7).NOTE:5. Please note that when assembling the operator panel board, you must install the connectingcable with the blue strip to the left.6. Press the "OPEN" button (8) and raise the stacker cover (9).7. Remove the two screws (10) and lift the front side of the upper cover (11). As you lift, you willdisengage the upper cover from the lower cover at the back of the printer.NOTE:Installation
