Question about HP : HP4 Laserjet Printer
Hp 4m shows service error 50
The service 50 error indicates a bad fuser assembly. You can get one on Ebay for less than $50. To replace the fuser just open the door on the back of the printer, inside you will see the fuser, unscrew the 2 screws and pull the old one out. Insert the new fuser and screw it down, power on the printer and you should be good to go.
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Posted on Nov 14, 2009
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Posted on Jan 02, 2017
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Please try below solution.
ERROR 50 - Service
A 50 service error can be either a temporary error or a permanent problem requiring service.
Temporary Error: Power off for 20 minutes to allow the capacitor on the DC controller to fully discharge. If you don't allow this capacitor to discharge, you will still get a Error 50 even if you have fixed the problem. This may clear the error - either temporarily or permanently. If it clears the error it was most likely caused by a low power problem i.e. low line voltage causing the power supply circuits to drop out of regulation. Low/unstable power (low line voltage, brownout condition). If it doesn't clear the error you may have one of the problems listed below
On the HP LaserJet 4L/4ML, errors are indicated by a series of indicator lights. This printer has four lights, Paper Jam, Paper Out, Data, and Online.
If all four lights are on, press and hold the blue panel button to display a secondary light pattern.
An error 50 is indicated by the ready and error lights with the blue panel button pressed.
Turn the printer off for 15 minutes to see if the error clears. If not, you will need to remove the fuser assembly to perform further checks. This requires removal of the cover, an unpleasant task, and measurement of the fuser terminals.
Note: THERE ARE FURTHER STEPS TO CHECK THE ISSUE, HOWEVER IT IS NOT RECOMMENED TO CHECK USING YOU ARE A USER, FURTHER STEPS NEED TO BE DONE ONLY IF YOU ARE COMFORTABLE AND INVOLVES MECHNICAL ISSUES OF PRINTER.
For your convienience, I will would like to provide the web link that shows the picture of the scene
try the things that are mentioned in web link. If the issue persists, then Printer needs to serviced.
I hope that this should resolve the issue for you.
If you need any further assistance, please let me know. I'll be glad to help you.
Oct 18, 2007 | HP LaserJet 4 plus Printer
Aug 15, 2017 | HP : HP4 Laserjet Printer
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