Code :

Code: 22
Display: 22 Error I/O
Description: Config Error/ Par I/O Error/MIO Error
I/O configuration for the computer or printer is incorrect. Configure is properly.
Check I/O Cable, it could be the wrong cable or damaged.
How about the I/O port - damaged, seated properly, pins not bent?
The computer and printer aren't talking because of improper signal protocols. Could be a bad cable or loose connection or just a poor quality cable. Reseat the cable and use only high quality IEEE 1284 compliant cables.

Code: 23
Display: 23 I/O Not Ready
Description: The I/O card is not accepting data. May not be connected - check cabling - or it may be defective. Reseat the card and if available, swap with a known working card. Watch the termination's on the network cabling.

Code: 24
Display: 24 Job Memory Full
Description: The print job is too complex to be processed. Laser printers are page printers and require the entire page to be processed before beginning to print. Simplify the print job by removing font changes and/or graphics. Add more memory.

Code: 30
Display: 30
Description: An I/O time-out or a prompt for user interaction like a manual feed has been exceeded. Check the I/O connections and make sure the proper media is being used.
This is an unexpected PostScript firmware error. Reseat the PostScript SIMM and/or replace it
PCL file was sent to the printer while in PostScript mode or the PostScript file contains bad data, or you have experienced and application error (crash). You need to check the configuration of your printer and drivers, reset the printer, try issuing an initialization command from within the application. May need to reload your PostScript print driver file.

Code: 40
Display: 40
Description: Make sure computer and printer are set to the same baud rates. Reset as needed.
Check the MIO card, remove, clean contacts, reinstall. Replace if defective
An abnormal connection break may have occurred during data transfer - Press Continue or Go to clear this error message.

Code: 43
Display: 43
Description: This indicates a communication problem between the formatter PCA and an optional interface installed (such as a network card). Remove and reseat the optional interface card. If the problem continues, remove the optional interface card and set the printer for standard parallel interface by taking off-line and holding down "Menu" key for 5-10 seconds. Scroll through items until "I/O =" appears and use the +/- key to display parallel and the enter key to select. Then put the printer back online and send a test job from the host computer via the parallel cable. If this is successful, you have a problem with the optional I/O card and should replace it or reset it.

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