How to replace the transfer roller on HP laserjet Pro 400 printer

Here is the procedure te replace the old transfer roller (RM1-9175) with the new one on these HP printers: LaserJet Pro 400 M401a M401dn M401dw M401n M425dn et M425dw.

Do not touch the black surface of the new roller..


Step 1:

• Open the cover to remove the toner

Step 2: (see picture below)

• In the toner slot, lift and hold the hinged metal plate ( -1- in the picture)
• While holding the metal plate up, release the 2 black plastic tabs (-2- in the picture)
• Pull the black plastic sleeve up until it is free, then slide the transfer roller (-3- in the picture) up and to the right to remove it.

Step 3:

• Insert the black plastic sleeve onto the tip of the new transfer roller, then first install the left end of the transfer roller, followed by the right end of the transfer roller and the locking of the black plastic ring.

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How to fix error code 13.20 on HP Laserjet 4200 4250 4300 4350 5100 printers

The error code 13.20 is a paper jam error.


Solution 1:

• Remove the paper tray and the toner
• Check for any sheet of paper stuck in the machine

If you see any sheet of paper, a sensor may be stock or defective. Try this:

On HP Website:

• How to Troubleshoot 13.20 Paper Jam Errors

In video:




If you still have the error 13.20, try this:

• Check for any foreign object in the printer
• Check the transfer roller.
• Replace the sensors
• Replace the roller separator
• Check the fuser unit is properly installed

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Error 50.x on HP Laserjet P2030, P2035

Error 50.X is a fuser error:  the printer has experienced an error with the fuser.


Solution 1:

• Turn off the power by using the power switch.
• Wait at least 60 seconds.
• Turn on the power and wait for the product to initialize.

 

Solution 2:

• If the error continues, turn off the product.
• Wait at least 25 minutes, and then turn on the product.
• (If you are using a surge protector, remove it. Plug the product directly into the wall socket. Use the power switch to turn on the product.)

 

Solution 3:

• Replace the fuser: 

Hewlett Packard HP LaserJet P2035, P2055 Series Fusing Assembly (110-127V), Part Number RM1-6405
or
RM1-6405-MK -N HP Maintenance Kit HP LJ P2035 P2055 110V

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How to solve message Waiting for tray 0 to lift with HP Laserjet printers

The message error Waiting for tray 0 to lift appears on these printers: HP CM6030, CP3525, CP4005, Laserjet 4000, 4200, 4250, 4350, 4700, 5500, 9040...
Paper is in the tray but no motors turn.


Solution 1:

• Turn the printer off. 
• Remove the Network Card. 
• Do a cold reset.
• Install the network card.

Solution 2:

• Download and install the latest firmware.

Solution 3:

• Take the paper out of the trays and check the trays mechanism, lift the tray by hand and make sure nothing is obstructing the movement or something broken.

Solution 4:

• Remove the toner.
• Lift the registration plate up.
• Check for torn pieces of paper blocking one of the sensors.

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Error 60.02 on HP Laserjet 4250 series

It appears that the spring which holds the lifter motor upright was designed without enough tension on it.

If the spring is removed and the motor assembly is allowed to fall to the right when the paper tray is inserted the motor never engages the tray and an error 60.02 appears.

However if the motor assembly is held upright while the tray is inserted the error message never appears as the motor always engages.

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HP Laserjet 49 errors

HP laserjet 49 errors are a firmware error, it might be caused by the firmware itself, or by the failure of a printer module.


How to isolate the cause:

• Verify that the problem is not being caused by a specific job, this error can be caused by bad information being sent to the printer.
• Power off and remove any installed EIO devices, (JetDirect Cards, Hard Drives), power on and test.

Cold Reset the printer:

• Power off, remove any optional memory, power on and retest.
• Power off and reseat any memory and firmware modules on the formatter board, power on and test.
• Power off, reseat the formatter board, power on and test.

Check firmware version:

• On newer machines with flashable firmware upgrade to the latest version. If you are running the latest version reload it, this might fix corrupted firmware. (Some printers have flashable firmware, others use a Firmware DIMM which must be replaced to upgrade.)

If you haven't found the cause yet, it could be:

• The firmware module if it's a DIMM as opposed to being part of the formatter.
• The memory if installed, some printers have to have at least one memory module installed to run, and it must have enough capacity to function, in some cases installing a module that does not meet the minimum requirements of the machine will cause a 49 error

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HP LaserJet M5035, M5035x, M5035xs Multifunction Printer

Downloads:

• Drivres and software
• Software Technical Reference (external)
• Using The Control Panel
• HP LaserJet M5025/M5035 MFP - (mulitple language) Getting Started Guide
• HP LaserJet M5035x/M5035xs MFP - (multiple language) Getting Started Guide 
• HP LaserJet M5035x/M5035xs MFP - (multiple language) Getting Started Guide 

Troubleshooting:

• HP LaserJet M5025 and M5035 MFP Series - Problem Solving Checklist
• HP LaserJet M5025 and M5035 MFP Series - Solve General Printing Issues
• Error 49.4C0:

Solution 1: First step is to restart the printer, clear all jobs with the Stop button, restart printer again.

Solution 2: Upgrade the firmware.

Solution 3:  If the message persists; Turn the MFP off. Remove the DIMM.
Remove any installed EIO devices. Turn the device on. If the error message disappears, reinstall the DIMM and EIO devices individually, making sure to turn the device power off and then on again as you install each device. Replace the component that caused the error message.

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