Lexmark MX910de Service Manual page 186

Action
Step 4
a
Properly connect the cables to the controller board.
b
POR the printer into the Diagnostics menu.
Does the error remain during startup?
Step 5
a
Replace the controller board.
b
POR the printer.
Does the error remain during startup?
Note: If an error different from the original 900.xx is displayed, consult
the service check for that error.
Step 6
Print the following:
•
Error log
•
Menu settings page
•
Network settings page
Does the error remain while these pages were printing?
Step 7
Note: Before performing this step, write down the following
information about the file being sent to the printer:
•
Application used
•
Operating system
•
Driver type
•
File type (PCL, PostScript, XPS, etc.)
a
Reattach the communications cable.
b
Reset the printer.
c
Send the printer a print job.
Does the error remain?
Step 8
a
Reset the printer.
b
Send a different print job to the printer.
Does the error remain?
Yes
Go to step 5.
Go to step 31.
Go to step 31.
Go to step 8.
Go to step 9.
Diagnostic information
186
7421
No
Go to step 6.
The problem is solved.
Go to step 7.
Go to step 10.
Go to step 10.