Lexmark X543 Service Manual
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Repair information4-77 Lexmark confidential until announce7525xxx 5.Disconnect the operator panel cable (B). 6.Remove the two screws (C) attaching the USB connector to the operator panel. Set the USB connector aside to attach to the new operator panel. 7.Remove the ground wire from the op panel. CB
4-78Service Manual 7525xxxLexmark confidential until announce Op panel bezel removal 1.Place a flatbed screwdriver under the front of the bezel. 2.Pry the bezel up and away from the op panel. Be careful to avoid marring the bezel cover.
Repair information4-79 Lexmark confidential until announce7525xxx Op panel cable 1.Remove the operator panel bezel cover. 2.Remove the operator panel. See “Operator panel removal” on page 4-76. 3.Remove the flatbed assembly. See “Flatbed removal” on page 4-53. 4.Remove the CCD cable cover. 5.Unroute the operator panel cable through the tabs (B). Warning: When replacing the op panel and USB cables, the cables must be routed in the exact same route with no overlapping of the cables. Failure to do so can result in the crimping of the cables. In addition, the redrive unit on the scanner might not make proper contact with the redrive rolls on the top cover. This could result in a paper jam under the flatbed unit. Logo cover 1.Remove the op panel bezel cover. See “Op panel bezel removal” on page 4-78. 2.Use a flatbed screwdriver to depress the four tabs (A) securing the logo cover to the op panel bezel cover. BA A
4-80Service Manual 7525xxxLexmark confidential until announce 3.Pull the logo cover away from the op panel bezel cover. Fax card removal 1.Remove the rear shield. See “Rear shield removal” on page 4-7. 2.Disconnect the fax interface cable from the fax card. See “Fax interface cable” on page 4-80. 3.Remove the three screws (A) which secure the fax card to the standoff on the controller board. 4.Remove the fax card. Fax interface cable 1.Carefully detach the fax interface cable from the fax card. 2.Carefully detach the fax interface cable from the connector JMOD2 on the controller board. A
Repair information4-81 Lexmark confidential until announce7525xxx Output bin tray 1.Grasp and lift the rear output bin tray away from the MFP.
4-82Service Manual 7525xxxLexmark confidential until announce
Locations5-1 Lexmark confidential until announce7525xxx 5. Locations Exterior views Front Front view Callout Part name 1 Operator panel 2 ADF input tray 3 Output bin 4 AIO release 5 Right imaging unit cover (right cover) 6 Primary paper tray 7 Manual feeder 8 Multipurpose feeder 3D E F6M N O9W X Y Z#2A B C5J K L8T U V01@!.G H I4P Q R S7* 3D E F6M N O9W X Y Z#2A B C5J K L8T U V01@!.G H I4P Q R S7* 123 4 5 6 7 123 4 5 6 7 8
5-2Service Manual 7525xxxLexmark confidential until announce Rear Rear view Callout Part name 1Power 2Line 3Line 4 Ethernet 5USB 6 Wireless antenna 1 2 5 43 6
Locations5-3 Lexmark confidential until announce7525xxx Interior view
5-4Service Manual 7525xxxLexmark confidential until announce Printer boards Controller Board