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Re: 50.1 fuser error
The cost vary wildly at different sources. HP has it available at $337.25 at http://partsurfer.hp.com. That's the VERY MOST you should pay but you should be able to get them considerably cheaper through Dale @ Seattle Platen - 1-800-221-2388 or through ebay. If using ebay, accept only NEW OEM SEALED BOX. If using Seattle Platen, either new or a refurb will work as they are known for really good quality refurb fusers.
Here's the part number: RM1-0428-120CN
Before you buy a fuser, if you have a volt/ohm meter check the fuser for faults. I have included a link to download the HP service manual for free. Start on page 309 and it will walk you through testing it.
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Turn the printer off and unplug it for 30 minutes; then turn the power back on.
Try a different power cord. DO NOT use extension cords to plug the printer in.
Remove the surge protector or UPS/CVT device and connect the printer directly to a power source.
Try a different electrical circuit. There could be an issue with the line voltage going into the printer from the power source.
Turn the printer off and unplug it. Let it sit for 30 minutes to let the fuser cool off. Carefully remove the fuser; IT MAY STILL BE HOT USE CAUTION. Examine the fuser, if any damage is apparent the fuser may need to be replaced. If no damage is noted reinstall the fuser, plug the printer back in and power it up.
LaserJet 4V ***If it is intermittent
or can be cleared by shutting it off to let it cool. The fuser is
running too hot, order rebuilt.***
Notes to remember!!
The low voltage power supply is what the takes the 110v ac from the
outlet and is for this reason often mistaken as the high voltage
power supply. The high voltage power supply HVPS main purpose is to
charge the toner cartridge with a much higher dc voltage.
Always Remove Power from the printer before working on it!
Lamps can break in shipping or if the fuser is dropped.
The fusers use floating connectors don't force them in.
motor error - ensure nothing stuck in fuser - remove from printer, try new print cartridge A motor error occurred. x = description 0-motor error 2-motor start-up error 3-motor rotation error 1. Turn the printer off, and then turn the printer back on. 2. Make sure that the fuser or toner cartridge does not hinder the movement of the gears in the drive train. 3. Check the main motor cable to make sure that it is seated correctly. 4. If the error persists, replace the motor, and then replace the dc controller, if necessary.
50.9 Error:1. Verify the fuser is installed correctly andfully seated.2. Check that connector J6007 on thefuser is seated correctly. Replace theconnector as necessary.3. Turn off the printer.4. Remove the fuser.5. Measure the resistance between fuserconnectors J6007LA-2 and J6007LA-3.If the resistance is not 100 kohms to3 Mohms, replace the fuser.6. Replace the DC controller PCA.
50.1 Error: (Low fuser temperature) 1. Verify the fuser is installed correctly and fully seated. 2. Check that connector J6007 on the fuser is seated correctly. Replace the connector as necessary. 3. Turn off the printer. 4. Remove the fuser. 5. If there is no conduction in the main thermistor, measure the resistance between fuser connectors J6007LA-1 and J6007LA-3. If the resistance is not 100 kohms to 3 Mohms, replace the fuser. 6. If there is no conduction in the fuser heater, measure the resistance between fuser connectors J6007LAF-1 and J6007-2. If the resistance is not 5 ohms to 1 kohms (100 to 127 V) or 20 ohms to 1 kohms (220 to 240 V), replace the fuser. 7. Upgrade the DC controller firmware. 8. Replace the DC controller PCA.
50.9 Error:(High fuser temperature (subthermistor)) 1. Verify the fuser is installed correctly and fully seated. 2. Check that connector J6007 on the fuser is seated correctly. Replace the connector as necessary. 3. Turn off the printer. 4. Remove the fuser. 5. Measure the resistance between fuser connectors J6007LA-2 and J6007LA-3. If the resistance is not 100 kohms to 3 Mohms, replace the fuser. 6. Replace the DC controller PCA.
Make sure the fuser is seated correctly and cycle the power (turn the machine off and back on). If the error continues try replacing the fuser (part# KW449). Iteminc has this in stock and ships same day. Here is a video that shows you how to replace it. Good luck, and thanks for using FixYa!
Loose fuser tabs on the HP LaserJet 4000/4050/4100 - a potential 50.2 error
If you experience a "50.2" fuser error while using a LaserJet 4000, 4050, or 4100 fuser, you should check to see if two tabs on the fuser have come loose. (They can get dislodged during shipping or during istallation.) Turn your printer off and remove your fuser. Flip it to the gear side (the left side) and press inwards on the fuser tab to make sure it is fully clicked in place, as shown below. Then flip the fuser over to the right side (the non-gear side) and press in on the other fuser tab to make sure it is also fully clicked in place. (right side of a LaserJet 4000/4050 fuser pictured below) (right side of a LaserJet 4100 fuser pictured below)