Lexmark MB2236, Service Manual, Page: 160 / 317

Error code Description Action
975 Network error—Unrecognizable
network port. See “Network software error service check” on
page 166 .
976 Network error—Unrecoverable
software error in the network port.
978 Network error—Bad checksum while
programming the network port.
979 Network error—Flash parts failed
while programming the network port.
980 The engine is experiencing an
unreliable communication. See “Engine error service check” on page 165 .
981 Engine protocol violation is detected.
982 Communications error is detected.
983 Invalid command received.
984 Invalid command parameter received.
985 RFID media option hardware error.
990 An equipment check condition has
occurred in the printer, but the printer
is unable to identify the exact
component failure.
991 A controller board equipment check is
detected.
992 General software error.
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 156 .
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.
3400-48x
Diagnostics and troubleshooting
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