Description: A large print job has exceeded the memory capacity of the printer. Verify that the SIMMS or memory cards are seated. Add more memory or simplify the print job.
Code: 21
Display: 21 Print Overrun
Description: The print job is to complex. Simplify the job by removing font changes etc.
The print job is to complex, enable page protect from the control panel and from the software. You may need additional memory.
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.