Lexmark C540N Service Manual

135, Diagnostic aids 3-45 5025-2xx, 4xx Photoconductor clean/erase After each plane of color has been transferred to the transfer belt from the photoconductors, a cleaning blade (H) scrapes the left over toner from the surface of each photoconductor. This is the clean/erase process. Now t…

207, Repair information 4-65 5025-2xx, 4xx Printhead removal See “Printhead” on page 7-5 for the part number. 1. Remove the top cover. See “Top cover assembly removal” on page 4-13. 2. Disconnect the cables from the controller board. Note: Be very careful disconnecting handling the…

56, 2-22 Service Manual 5025-2xx, 4xx Service checks 90x.xx error 925.01—Fan error service check Step Questions / actions Yes No 1 Turn the printer off, and remove the rear shield. See “Top cover assembly removal” on page 4-13. Check the cable connections. Are all the cable …

68, Lexmark C540N 2-34 Service Manual 5025-2xx, 4xx Operator panel display blank, five beeps Service tip: The printer has detected a problem with the controller board, the operator panel assembly cable (part of the front cover assembly), or the operator panel assembly if POST does not complete. The pr…

181, Repair information 4-39 5025-2xx, 4xx 4. Remove the screw (C) securing the HVPS. 5. Press down on the spring mount, and carefully slide the HVPS out. Release the pressure on the spring mount when the LVPS slides out about 25mm. Installation notes: Warning: Connect the high-voltage powe…

164, 4-22 Service Manual 5025-2xx, 4xx Duplex reference edge removal See “Duplex reference edge” on page 7-5 for the part number. 1. Open the front door. 2. Remove the four short screws (A) in front, and the four longer screws (B) in the back of the duplex aligner. 3. Lift the duplex align…