HP LaserJet Error Codes 50-59

Message on printer display	What it means	What to do
50.X FUSER ERROR	A fuser error has occurred.	1. Turn the printer off, wait 10 minutes, and then turn the printer on. 2. If the message persists, reseat the fuser. If that does not work, replace the fuser. To check the fuser, turn the printer off and remove the fuser. Measure the resistance between the fuser connectors. If it is not within the proper range, replace the fuser. If there is not continuity between the fuser connectors neutral and hot with the fuser removed, replace the fuser. If the problem is not related to the fuser, replace the engine controller board.
50.4 PRINTER ERROR	A problem exists with the customer’s line voltage.	1. Remove the printer from any UPS supplies, additional power supplies, or power strips. 2. Plug the printer into a wall outlet and see if this resolves the problem. 3. If the printer is already plugged into a wall outlet, try another power source in the building that is independent of the one currently being used. 4. The line voltage and current source at the printer location might need to be inspected to ensure that it meets the printer’s electrical specifications.
51.X PRINTER ERROR	A loss of beam-detect occurred. X description: 1 = Beam-detect error 2 = Laser error	1. Press GO. The page containing the error will automatically be reprinted. 2. Turn the printer off and then on. 3. Reseat cables to the laser/ scanner and engine controller. 4. Replace the laser/scanner. 5. Replace the DC controller.
52.X PRINTER ERROR	The laser scanner speed is incorrect. X description: 1 = Scanner startup error 2 = Scanner rotation error	1. Press GO. The page containing the error will automatically be reprinted. 2. Turn the printer off and then on. 3. Reseat cables to the laser/ scanner and engine controller. 4. Replace the laser/scanner.
53.XY.ZZ PRINTER ERROR	There is a memory error with an accessory. The DIMM that caused the error will not be used. Values of X, Y, and ZZ are as follows: X = DIMM type 0 = ROM 1 = RAM Y = Device location 0 = internal memory (ROM or RAM) 1 to 4 = DIMM slots 1, 2, 3, or 4 ZZ = Error number 0, 1, 2 = Unsupported o unrecognized memory 3 = Failed RAM test 4, 5 = Exceeded maximum RAM or ROM size 6 = Invalid DIMM speed 7 = DIMM reporting information incorrectly 8 = DIMM RAM parity error 9 = ROM needs to be mapped to an unsupported address 10 = DIMM address conflict 11 = PDC XROM out of bounds 12 = Unable to make a temporary mapping	1. Turn the printer off, and reseat or replace the specified DIMM. 2. Try the DIMM in another slot. (The firmware DIMM must remain in slot #4—the lowest DIMM slot.) 3. Replace the DIMM that caused the error.
54.1 REMOVE SEALING TAPE alternates with FROM TONER CARTRIDGE	The toner cartridge has been installed without removing the sealing tape.	1. Open the top cover and remove the toner cartridge. 2. Pull the sealing tape tab to remove the strip. 3. Reinstall the toner cartridge and close the top cover.
54.4 PRINTER ERROR alternates with CYCLE POWER TO CONTINUE	A problem exists with the customer’s line voltage.	1. Remove the printer from any UPS supplies, additional power supplies, or power strips. 2. Plug the printer into a wall outlet and see if this resolves the problem. 3. If the printer is already plugged into a wall outlet, try another power source in the building that is independent of the one currently being used. 4. The line voltage and current source at the printer location might need to be inspected to ensure that it meets the printer’s electrical specifications.
55.xx PRINTER ERROR alternates with CYCLE POWER TO CONTINUE	An internal communications error occurred.	The page containing the error will automatically be reprinted. 1. Check the power at the customer’s location. 2. Replace the formatter and/or firmware DIMM. 4. Replace the engine controller board. 5. Replace the formatter board.   (On the 5si, 8000, 8100 this could be a fuser problem. Try replacing the fuser.)
56.X PRINTER ERROR	An incompatible combination of input/ output bins was selected. X = description: 1 = Illegal input or bad accessory connector 2 - Illegal output The page containing the error will automatically be reprinted.	1. Turn the printer off, and then turn the printer on. 2. Check the printer’s configuration. 3. Verify accessory connection.
57.X PRINTER ERROR	A fan failure was detected. X description: 4 = Printer fan 7 = Duplex fan	1. Check the fan’s connector and make sure the fan is not blocked. 2. Replace the fan. On older style printers this is often caused by a bad main motor. (Older style printer being printers with halogen heating elements in the fuser - 4, 4+, 5, 4si, 5si, etc).
58.2 PRINTER ERROR	An environmental thermistor (TH3) failure occurred.	1. Turn the printer off, and then turn the printer on. 2. Verify the environmental thermistor cable is securely connected. 3. Replace the environmental thermistor. 4. If the error persists, replace the engine controller board.
59.X PRINTER ERROR	A main motor error occurred. X description: 0 = Motor error 1 = Motor startup error 2 = Motor rotation error	1. Turn the printer off, and then turn the printer on. 2. Check and reseat the fuser and toner cartridge to make sure they are not hindering gear movement in the drive train. 3. Check the main motor’s cable to ensure that it is seated properly. 4. If the error persists, replace the main motor.

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