Lexmark X543 Service Manual
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Repair information4-67 Lexmark confidential until announce7525xxx ADF separator roll assembly 1.Lift the locking lever (A). 2.Slightly lift the separator roll assembly, and pull it out of the mount (B) on the opposite side. A B
4-68Service Manual 7525xxxLexmark confidential until announce Bezel cover 1.Remove the op panel bezel. See “Op panel bezel removal” on page 4-78. 2.Remove the two screws (A) securing the bezel cover to the top of the op panel mounting frame. 3.Remove the AIO link. See “AIO link” on page 4-74. 4.Lift the flatbed unit to a 45 degree angle. Be careful to avoid damaging or disconnecting the CCD ribbon cable on the rear of the flatbed. 5.While holding the flatbed in place, remove the three screws (B) securing the bezel cover to the op panel mounting frame and flatbed. A B
Repair information4-69 Lexmark confidential until announce7525xxx 6.While holding the op panel mounting assembly, remove the op panel bezel cover. Redrive unit 1.Remove the flatbed assembly from the MFP. See “Flatbed removal” on page 4-53. 2.Place the flatbed facedown on a soft surface to avoid scratching the glass or marring the covers. 3.Remove the cable cover plate (A). 4.Remove the four screws (B) securing the redrive to the flatbed unit. AB
4-70Service Manual 7525xxxLexmark confidential until announce 5.Remove the bin full sensor flag located on the rear shaft. Cover scanner left 1.Remove the flatbed assembly. See “Flatbed removal” on page 4-53. 2.Release the tabs (A) securing the left flatbed cover to the flatbed unit using a small flatblade screwdriver. A
Repair information4-71 Lexmark confidential until announce7525xxx Cover scanner right 1.Remove the imaging unit in the print engine. 2.Raise the scanner assembly to the up position, and lock in place. 3.Remove the four screws (A) securing the right scanner cover to the flatbed unit. A
4-72Service Manual 7525xxxLexmark confidential until announce 4.While holding the ADF away from the flatbed, use the other hand to lift and disengage the right scanner cover from the flatbed unit.
Repair information4-73 Lexmark confidential until announce7525xxx AIO release lever 1.Remove the right scanner cover. See “Cover scanner right” on page 4-71. 2.Remove the screw (A) securing the AIO link to the flatbed unit. 3.Disengage the AIO link from the flatbed unit. 4.Remove the screw (B) securing the AIO release lever to the flatbed. 5.Slide the AIO release lever towards the back of the flatbed. 6.Remove the spring and AIO release lever. Note: When reinstalling the AIO release lever, place the release lever on the flatbed, and then inset the spring before replacing the screw. A B
4-74Service Manual 7525xxxLexmark confidential until announce AIO link 1.Lift the scanner to the up position. Use a phillips screwdriver to remove the screw (A) securing the AIO link to the AIO toner cover. 2.Return the flatbed to the down position. 3.Remove the screw (B) securing the AIO link to the flatbed unit. A B
Repair information4-75 Lexmark confidential until announce7525xxx AIO toner cover 1.Lift the scanner unit to the up position. 2.Remove the screw (A) fastening the AIO toner cover to the scanner unit. 3.Remove the screw (B) securing the AIO hinge to the MFP. 4.Remove the hinge. Save this for the new AIO toner cover. 5.Rotate the AIO toner cover so the tab (C) on the cover lines up with the hole on the AIO toner cover. 6.Pull the AIO toner cover to the left, and remove it from the printer. A BC
4-76Service Manual 7525xxxLexmark confidential until announce Operator panel removal Warning:When replacing any one of the following components: Operator panel assembly Controller board Replace only one component at a time. Replace the required component, and perform a POR before replacing a second component listed above. If this procedure is not followed, the printer will be rendered inoperable. Never replace both of the components listed above without a POR after installing each one, or the printer will be rendered inoperable. Warning:Never install and remove components listed above as a method of troubleshooting components. Once a component has been installed in a printer, it cannot be used in another printer. It must be retur ned to the manufacturer. 1.Remove the op panel bezel cover. See “Op panel bezel removal” on page 4-78. 2.Remove the left cover. See “Left cover removal” on page 4-4. 3.Disconnect the ground wire from the LVPS cage. 4.Remove the one screw (A) attaching the operator panel to the op panel mounting frame. A