Lexmark MX310 Series Service Manual page 113

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 two
or more of the components listed above without a POR after installing each one or the printer will be rendered
inoperable.
Warning—Potential Damage: These components can be used as a method of troubleshooting as long as the
machine is booted into diagnostic mode or is operating in diagnostic mode. Once a component has been installed in
a machine and powered up into user mode, it cannot be used in another machine. It must be returned to the
manufacturer.
Action
Step 1
Check the control panel assembly.
Was the control panel assembly recently replaced?
Step 2
Check the controller board assembly.
Was the controller board assembly recently replaced?
Step 3
Replace the current control panel assembly with the control panel
assembly. Go to "Control panel assembly removal" on page
Does the error remain?
Step 4
Replace the current controller board assembly with the original controller
board assembly. Go to "Controller board removal" on page
Does the problem continue?
Step 5
Replace the original control panel assembly with a new and not previously
installed control panel assembly.
Does the error continue?
Step 6
Replace the original control panel assembly with a new and not previously
installed control panel door assembly.
Does the error continue?
Yes
Go to step 3.
Go to step 4.
Go to step 5.
249.
Go to step 6.
231.
Contact the next level
of support.
Contact the next level
of support.
Diagnostic information
113
7015
No
Go to step 2.
Contact next level of
support.
The problem is solved.
The problem is solved.
The problem is solved.
The problem is solved.