Lexmark C91x Service Manual page 52

5055-xxx
Printer controller board/printer control EPROM (U5)
If you replace the printer controller board, remove EPROM (U5) and
install it on the new board. Also check the printhead alignment.
If you change the EPROM, record and input the following items
using the diagnostic mode following EPROM replacement:
•
LED Printhead Light Quantity
•
Printer Alignment (X, Y, and Theta)
•
All Counters
RIP controller board
If you replace the RIP controller board, move the solid state drive,
memory, and option cards from the old card to the new one. After
replacing the RIP controller board, it is necessary to type in the
following items in Diagnostic Mode:
•
Set Serial Number
•
Configuration ID
Transfer belt
If you replace the transfer belt, check the printer alignment (X, Y, and
Theta), adjusted in diagnostic mode.
LED printhead controller board or LED printhead
If you replace the LED printhead controller board or LED printhead,
check and adjust the following items in diagnostic mode:
•
LED Printhead Light Quantity
•
Printer Alignment (X, Y, and Theta)
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Service Manual