40, 41.3, 41.5, 44.1, 49.XX.XX, 50.X, 51.1Y, 51.2Y, 52.XY, 53.XY.ZZ, 54.X, 55.XX.YY, 56.XX, 57.0X, 58.0X

40	40 EMBEDDED I/O BAD TRANSMISSION	A connection with the embedded Jetdirect print server has been broken.	Turn the MFP off then on. If the message persists, the embedded Jetdirect print server might be damaged. Replace the formatter.
41.3	41.3 UNEXPECTED SIZE IN TRAY X	The paper that is loaded is longer or shorter in the feed direction than the size configured for the tray.	1. If the incorrect size was selected, cancel the job or press ? to access help. OR 2. Touch OK to select another tray. 3. Run paper path diagnostics to ensure that the sensors are functioning properly. 4. Replace the paper feed unit.
41.5	41.5 UNEXPECTED TYPE IN TRAY X	The MFP senses a different paper type in the paper path than configured in the tray.	1. If the incorrect type was selected, cancel the job or press ? to access help. OR 2. Touch OK to select another tray. 3. Run the paper path diagnostics to ensure that the sensors are functioning properly. 4. Replace the paper feed unit.
44.1	44.1 USB ACCESSORY ERROR	This message appears when a connected USB accessory draws too much power. When this happens, the ACC port is disabled and printing stops.	• Use the scroll bar to step through the instructions. • Remove the USB accessory.
49.XX.XX	49.XX.XX PRINTER ERROR	A critical firmware error has occurred that caused the processor on the formatter to abort operation. This type of error can be caused by invalid print commands, corrupt data, or invalid operations. In some cases, electrical noise in the cable can corrupt data during transmission to the printer. Other causes include poor-quality parallel cables, poor connections, or homegrown programs. On rare occasions, the formatter is at fault, which is usually indicated by a 79 Service Error.	1. Turn the MFP off then on. 2. Press Stop to clear the print job from memory. 3. Turn the MFP off then on. 4. Try printing a job from a different software program. If the job prints, go back to the first program and try printing a different file. If the message appears only with a certain software program or print job, contact the software vendor for assistance. 5. If the message persists with different software programs and print jobs, disconnect all of the cables to the MFP that connect it to the network or computer. 6. Turn the MFP off. 7. Remove all memory DIMMs or thirdparty DIMMs from the MFP. (Do not remove the firmware DIMM.) 8. Remove all EIO devices from the MFP. 9. Turn the MFP on. 10. If the error no longer exists, reinstall each DIMM and EIO device one at a time, making sure to turn the MFP off and on again as you install each device. 11. Replace a DIMM or EIO device if you determine that it causes the error. 12. Remember to reconnect all of the cables that connect the MFP to the network or computer. 13. If the error persists, upgrade the firmware before replacing the DC controller. 14. Replace the formatter and calibrate the MFP
50.X	50.X FUSER ERROR	A fuser error has occurred. The error might be due to an inadequate power supply, inadequate line voltage, or a problem with the fuser. The following are specific fuser errors: 50.1: A low fuser temperature error has occurred in the main thermistor. 50.2: A fuser warm-up service error has occurred. 50.3: A high fuser temperature error has occurred in the main thermistor. 50.6: An open fuser error has occurred. 50.7: A fuser pressure release mechanism has failed.	1. Turn the MFP off then on. 2. Reinstall the fuser and check the fuser connection (J5001) with the DC controller. If the connector is damaged, replace it. 3. Replace the fuser. 4. Replace the low-voltage PCB. 5. Replace the DC controller.
51.1Y	51.1Y PRINTER ERROR PRINTER ERROR	A beam detect error has occurred. The values of Y are: Y Description 0 – Black 1 – Cyan 2 – Magenta 3 – Yellow	1. Turn the MFP off then on. 2. If possible, run the scanner test diagnostic for the laser scanner indicated. 3. Verify that the scanner is properly connected at the DC controller. 4. Replace the scanner.
51.2Y	51.2Y PRINTER ERROR	A laser error has occurred. The values of Y are: Y Description 0 – Black 1 – Cyan 2 – Magenta 3 – Yellow	1. Turn the MFP off then on. 2. If possible, run the scanner test diagnostic for the laser scanner indicated. 3. Verify that the scanner is properly connected at the DC controller. 4. Replace the scanner.
52.XY	52.XY PRINTER ERROR	A scanner error has occurred.	1. Restart the MFP. 2. Scan from the flatbed and from the ADF. 3. Reseat the formatter.
53.XY.ZZ	53.XY.ZZ CHECK RAM DIMM SLOT X	A memory error has occurred. X DIMM type: 1 – Y Device location: 1 – DIMM Slot 1 2 – DIMM Slot 2 ZZ Error number: 00 – Unsupported memory 01 – Unrecognized memory 02 – Unsupported memory size 03 – Failed RAM test 04 – Exceeded maximum RAM size 05 – Invalid DIMM speed	If prompted to do so, touch OK to continue. The MFP should come to the READY state, but will not make full use of all memory installed. Otherwise: 1. Turn the MFP off. 2. Verify that all memory meets specifications and is correctly seated. 3. Turn the MFP on. 4. If the problem persists, replace the DIMM card in the slot indicated.
54.X	54.X PRINTER ERROR	Printing cannot continue. There is a sensor malfunction. Values of X are: 01 – Humidity/temperature sensor 15 – Yellow 16 – Magenta 17 – Cyan 18 – Black	1. Turn the MFP off then on. 2. Check connector J501 on the toner level PCB or J5201 on the environmental sensor. 3. Check connector J1014 or connector J1010 on the DC controller. 4. Replace the environmental sensor or the toner level PCB. 5. Replace the DC controller.
55.XX.YY	55.XX.YY DC CONTROLLER ERROR	An printer command error has occurred. XX Description: 01 = Memory error 02 = Memory error 03 = No engine response 04 = Communication error 05 = RFU error 55.04.55 = ADF fan error	1. Turn the MFP power off then on. 2. For 01 and 02 errors, replace the DC controller. 3. For 03 and 04 errors, check all connections with the DC controller. 4. Upgrade the DC controller firmware. 5. For 05 errors, upgrade the DC controller. 6. Replace the DC controller.
56.XX	56.XX PRINTER ERROR	An MFP error has occurred. XX Description: 01 – Input device 02 – Output device	1. Turn the MFP off then on. 2. Remove and reinstall all input and output devices. 3. Check all connectors to input and output devices. Replace any defective connectors.
57.0X	57.0X PRINTER ERROR	An MFP fan error has occurred. Description: 57.0A – Power supply fan 57.05A – Duplex fan 57.09 – Fuser fan (top back) 57.08 – ETB fan 57.03 – Sub power supply fan 57.07 – Control fan 1 (rearmost) 57.06 – Control fan 2 57.04 – Cartridge fan (bottom left) 57.01 – Delivery fan (top left)	1. Turn the MFP off then on. 2. Check the fan for obstructions. 3. Ensure that the fan rotates. 4. Ensure that the fan connector is seated properly. 5. Replace the fan.
58.0X	58.0X PRINTER ERROR	A memory tag error was detected. Description: 03 – Memory controller PCB (CPU) 04 – Memory controller PCB (power)	1. Turn the MFP off then on. 2. Check the power supply. 3. Check connectors J4001 and J9630 on the memory controller PCB and J1021 on the DC controller PCB. 4. Replace the memory controller PCB. 5. Replace the e-label contacts. 6. Replace the DC controller.