Controller Board Removal - Lexmark X543 Service Manual

7525-xxx

Controller board removal

Warning: Observe all ESD precautions while handling electrostatic-discharge sensitive parts. See
ESD-sensitive parts" on page
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.
Never install and remove components listed above as a method of troubleshooting components.
Warning:
Once a component has been installed in a printer, it cannot be used in another printer. It
must be returned to the manufacturer.
CAUTION - POTENTIAL INJURY: There is danger of explosion if a lithium battery is incorrectly
replaced. Replace it only with the same or an equivalent type of lithium battery. Do not recharge,
disassemble, or incinerate a lithium battery. Discard used batteries according to the manufacturer's
instructions and local regulations.
1. Remove the rear shield See
Remove the fax card. See
2.
Remove the fax card standoff (fax equipped models only) from the controller board.
3.
Disconnect all the cables from the controller board.
4.
Remove the six screws (A) that are securing the controller board to the controller board cage.
5.
6. Remove the board.
Installation notes: Perform the Motor detect test and Scanner manual registration after replacing the controller
board. See
Warning: Do not start the machine into a Ready state to test it. See
When replacing the controller board, verify the cable from the high-voltage power supply is seated
Warning:
properly. The cable may have come loose from the HVPS.
Print a few pages to verify the installation. If the pages are blank, confirm that the high-voltage
power supply cable is properly seated. The connector may have been loosened at the HVPS.
Service Manual
4-18
4-1.
"Rear shield removal" on page
"Fax card removal" on page
A
"Motor Detect" on page 3-10
4-7.
4-107.
and
"Scanner Manual Registration" on page
"Testing generic FRUs" on page
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3-35.
4-1.