Lexmark CS720
A 900.xx firmware error follows the connection of the printer to certain networks; these networks where identified to have transmission frames containing over 1500-byte packets, which exceeds the limit set by the IEEE 802.3 standard.
Step 1
Disconnect the printer from the network by unplugging the ethernet cable.
Turn off the printer, wait for 30 seconds, then turn it on again.
Did the 900.xx error message return?
Contact support.
Proceed to Step 2.
Step 2
Clear all jobs from both the printer and computer print queue.
Print the menu settings page.
Reconnect the printer to the network by plugging the ethernet cable back in.
Update the printer firmware to the latest version available.
The issue has been resolved.
LEGACY ID: SO8684
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