Lexmark MB2236 Service Manual page 160

Error code
975
976
978
979
980
981
982
983
984
985
990
991
992
System software error service check
Different types of 900.xx errors can occur. There may be a communication problem (bad cable, network
connection, and software issues), or a hardware problem with the controller board or ISP (internal solutions
port). Check the communication and software problems first. Determine if the problem is constant or
intermittent. Use the following troubleshooting procedure to isolate the issue. Take notes as instructed. You
will need that information in the event that you need to contact your next level of support.
Before troubleshooting:
1
Perform the "Procedure before starting the 9yy service checks" on page
2
Determine the operating system used when the error occurred. If possible, determine whether a
PostScript or PCL file was sent to the printer when the error occurred. Ask the customer which Lexmark
Solutions applications are installed on the printer.
Description
Network error—Unrecognizable
network port.
Network error—Unrecoverable
software error in the network port.
Network error—Bad checksum while
programming the network port.
Network error—Flash parts failed
while programming the network port.
The engine is experiencing an
unreliable communication.
Engine protocol violation is detected.
Communications error is detected.
Invalid command received.
Invalid command parameter received.
RFID media option hardware error.
An equipment check condition has
occurred in the printer, but the printer
is unable to identify the exact
component failure.
A controller board equipment check is
detected.
General software error.
Diagnostics and troubleshooting
Action
See "Network software error service check" on
page 166.
See "Engine error service check" on page
160
3400-48x
165.
156.