Lexmark X792 - Flatbed Scanner Assembly; Adf Unit Assembly; Flatbed Scanner CCD Assembly; Adf Duplex CCD Assembly

Lexmark C792/X792 Color Product Study Guide Rev 2.1
For Training Purposes Only 6/24/2011
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Flatbed Scanner Assembly
ADF Unit Assembly
Flatbed Scanner CCD Assembly
ADF Duplex CCD Assembly
If one of these parts is replaced or even removed, you should perform the following adjustments:
• Calibrate Scanner – reset the scanner calibration values and check the black levels of the
scanner.
• Adjusting Skew for the ADF and Flatbed Scanner – this adjustment does the following:
a. Checks paper squareness
b. Checks for print engine skew
c. Electronic ADF/Flatbed Skew adjustment
d. Mechanical Flatbed or ADF Adjustment
e. Magnification Adjustment (adjusts the bottom margin)
System Board
The System Board is a complex removal for several reasons.
First, numerous cables plug into this board. To prevent possible damage to the cables from moving
parts, it is important that they are reinstalled in their original locations.
Second, this part contains Mirrored NVRAM, so it should never be replaced at the same time as other
Mirrored NVRAM components. See the Mirrored NVRAM Components section in this guide for
complete details and exceptions.
Third, the System Board contains the default and custom eSF applications and settings. These are NOT
contained in the NVRAM or hard drive, therefore, a System Board failure could result in loss of these
applications and their settings if they are not backed up. When a new System Board is installed, the
Lexmark default eSF applications and settings are loaded.
The best practice is for an administrator to have their eSF applications and settings backed up prior to
encountering a problem. In case this hasn’t been done, however, an attempt to back up the data should
be performed before replacing the System Board.
See the following page for instructions on how to back up the eSF applications and settings.