Before troubleshooting:
1 Perform the “Steps before starting the 9yy service checks” on page 252.
2 Determine the operating system used when the error occurred. If possible determine whether a PostScript or PCL
file was sent to the device when the error occurred. Ask the customer which Lexmark Solutions applications are
installed on the device.
Action Yes No
Step 1
POR the printer.
Does the error remain?
Go to step 2. The problem is solved.
Step 2
a Write down the exact 900.xx error code displayed on the device.
b Turn off the printer.
c Clear the print queues.
d Disconnect all communication cables, and remove all memory
options.
e Remove any installed ISP.
f POR the printer into the Diagnostics menu.
Does the error remain during startup?
Go to step 3. Go to step 6.
Step 3
Check all the cables connected to the controller board for proper
connectivity.
Are the cables properly connected?
Go to step 5. Go to step 4.
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?
Go to step 5. Go to step 6.
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.
Go to step 31. The problem is solved.
4063
Diagnostic information
254
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