• Code: 20
• Display: 20 Insufficient Memory
• Description: The printer has received more data from the computer than fits in available memory.
• Remedy: 1. Press to continue printing. NOTE A loss of data will occur. 2. Reduce the complexity of the print job to avoid this error in the future. 3. Adding memory to the printer may allow printing of more complex pages.

• Code: 22
• Display: 22 EIO X BUFFER OVERFLOW
• Description: The EIO card in card slot X has overflowed its I/O buffer during a busy state.
• Remedy: 1. Press GO to continue printing. 2. Power cycle the printer. 3. Resend the print job. 4. If the error still occurs, replace the EIO card in slot X.

• Code: 22
• Display: 22 EMBEDDED I/O BUFFER OVERFLOW
• Description: The embedded Jetdirect print server has overflowed.
• Remedy: 1. Press GO to continue printing. 2. Power cycle the printer. 3. Resend the print job. 4. If the error still occurs, replace the EIO card in slot X.

• Code: 22
• Display: 22 PARALLEL I/O BUFFER OVERFLOW
• Description: The parallel buffer has overflowed during a busy state
• Remedy: 1. Press to resume printing. NOTE A loss of data will occur. 2. If the message persists, disconnect the parallel cable at both ends and reconnect. 3. Ensure that a high quality cable is being used. Some non-HP parallel cables might be missing pin connections or might not otherwise conform to IEEE-1284 specifications. 4. Replace the cable. 5. Leave the computer connected and try to connect to a different printer. If this still fails, replace the formatter.

• Code: 22
• Display: 22 USB I/O BUFFER OVERFLOW
• Description: The USB buffer has overflowed during a busy state.
• Remedy: 1. Press to continue printing. NOTE A loss of data will occur. 2. If the message persists, disconnect the USB cable at both ends and reconnect. 3. Ensure that a high quality cable is being used. Some non-HP parallel cables might be missing pin connections. 4. Replace the cable. 5. Leave the computer connected and try to connect to a different printer. If this still fails, replace the formatter.

• Code: 40
• Display: 40 EIO X BAD TRANSMISSION
• Description: A connection with the card in EIO slot X has been broken.
• Remedy: 1. Press GO to continue printing. 2. Power cycle the printer. 3. Resend the print job. 4. If the error still occurs, replace the EIO card in slot X.

• Code: 40
• Display: 40 EMBEDDED I/O BAD TRANSMISSION
• Description: A connection with the embedded Jetdirect print server has been broken.
• Remedy: 1. Press GO to continue printing. 2. Power cycle the printer. 3. Resent the print job. 4. If the error still occurs, replace the EIO card in slot X or the formatter.

• Code: 41.3
• Display: 41.3 UNEXPECTED SIZE IN TRAY X
• Description: Media is loaded that is longer or shorter in the feed direction than the size configured for the tray.
• Remedy: 1. Make sure the correct settings are set for the trays. 2. Run a paper path diagnostic test to determine if all sensors are working correctly. 3. Replace the paper feed assembly.