Question about HP LaserJet 4 plus Printer

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Error message on startup

When I power the printer up it goes into warmup and then issues message '50 service' with the 50 flashing. The cartridge toner is fine as it hasn't been used much. I do not have a manual to tell me what this message means. I have reseated the toner and generally checked the machine over, it all appears to be working order. Can you help?

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Re: error message on startup

When it shows the message does it just sho 50 or does it have any other numbers after it eg. 50.1 / 50.2 / 50.4 ?


Posted on Nov 01, 2007

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Re: error message on startup

A laserjet 1300 will not show a error 50 code, you only have three light codes with continued error codes with blinking lights or non-blinking lights. This printer does not have a display screen. The only way to read this error would be to go into printer icon and hit properties to see error messsage.

Posted on Nov 27, 2006

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Re: error message on startup

The fuser unit could be the causes. But you can try this, power off the printer & unplug the power cord for 15 to 20 minutes. Power on after 20 minutes and se whether the problem resolves, if it ok, monitor it for a while just to make sure the problem resolves

Posted on Nov 23, 2006

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I unplugged from the wall. Now I have an error


The Ink delivery system is malfunctioned, please perform below troubleshooting to fix the issue.

Power Drain:

1.Press the On button to turn the printer off.
2.Unplug the power cord from the back of the printer.
3.Remove all the ink cartridges.
4.Wait two minutes.
5.Plug the power cord into the back of the printer.
6.Press the On button to turn the printer on.
7.Install the ink cartridges when prompted.

If you still get the same error message (0x code on display) reset the printer.

Reset the Printer:

1.Remove the ink cartridges from the printer, close the cartridge doors.
2.Wait for 30 seconds and disconnect the power cable from the back of printer, while the printer is ON.
3.Press and Hold "OK" and "Cancel" key, while holding them, insert the power cable behind and keep holding them for 10 seconds and then release.
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5.Then insert the cartridges when the display prompts and check the printer.

If the 0xc18 or 0xc19 ink system error code displays on the front panel, service the printer.

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make sure all in correct. Clean sensors and cartridges then delete and reload driver. if this does not correct issue, then you have a faulty cartridge

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Turn on printer and light continues to flash. Not

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The Power light can flash for several reasons:

• The printer cover is open.
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• A problem exists with the printer, such as a paper jam or a problem with a print cartridge.

If an error message appears
Read the error message that explains the problem and its solution.

If no error message appears
Check the status of the printer by using the printer tools. To gain access to the tools, open the Printer Properties dialog box, click the Services tab, and then click the Service this device button.

Use the printer tools to perform the following tasks:
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• Clean the print cartridges.
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Printer Error Message HP AIO 6210 printer


If you find the lights flashing, we could try resetting the printer.I have explained the reset procedures below

POWER DRAIN:-Turn off the printer, Unplug the power cable from printer and from the wall outlet.Press and hold ON buton for 30-60 seconds.

PARTIAL RESET:-Unplug the printer power cable while its ON, press and hold # and 3 button and connect the Power cord while holding.Wait untill the ON light flashes, then release the buttons.

----(for below reset cartridges must be removed out)---------

SEMI_FULL RESET:-Remove the ink cartridges, Unplug the printer power cable while its ON, press and hold # and 6 button and connect the Power cord while holding.Wait untill the ON light flashes,or wait for 20 seconds,hen release the button.If the printer goes off dont worry release the button and Push the ON button.

FULL NVM RESET:-Take the Ink Cartridges out, Unplug the printer power cable while its ON, press and hold OK and CANCEL button and connect the Power cord while holding the buttons.keep Holding the buttons until the printer goes off ,release the button and Push the ON button.


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52.x PRINTER ERROR alternates with To continue turn off then on Possible printer control panel error messages 52.0 PRINTER ERROR 52.1 PRINTER ERROR 52.2 PRINTER ERROR Description A temporary printing error occurred. The x can equal one of the following: 0 = Scanner error 1 = Scanner startup error 2 = Scanner rotation error This error can also indicate a problem with the shutter tab on the print cartridge. Action
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  2. If the message persists, check the print cartridge for damage.
    1. Verify if the shutter tab on the cartridge is broken or damaged. click on the below link. Shutter tab on the print cartridge
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If the message continues to persist, then download the printer software based on operating system and reinstall.

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1 Answer

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Is that an error code "Cartridge Error 50C" ? If so, see below....

Cartridge Error 50C: Your print cartridge has shorted.
1. Power off your All-in-One and unplug it.
2. Plug in your All-in-One again and turn it on.
3. Uninstall and then reinstall your cartridges.
4. If this does not resolve the issue, try the troubleshooting steps for the other cartridge errors below.

Error: Black Cartridge Missing - The black cartridge is not installed. (Install cartridge PN 82)
Error: Color Cartridge Missing - The color cartridge is not installed (Install cartridge PN 83)

Cartridge Error: Complete the following instructions:
1. Power off your All-in-One.
2. Use both hands to lift up the scanner unit until the scanner support holds it open.
3. Turn the All-in-One on. The print cartridge carrier moves and stops at the loading position, unless the All-in-One is busy.
4. Remove the color print cartridge.
5. Lower the scanner unit until it is completely closed.
6. If the error message reappears, replace the black print cartridge with a new print cartridge.
If it does not repeat steps 1-3 and then go to step 7.
7. Reinstall the color cartridge and remove the black print cartridge.
8. Lower the scanner unit until it is completely closed.
9. If the error message occurs again, replace the color cartridge.
10. If an error message reappears, repeat steps 1-3 and reinstall both print cartridges.
11. Lower the scanner unit until it is completely closed.
12. If you receive the error message again, replace both cartridges.

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Problem with, HP Officejet 4315, serial no: CN74DG1113. The screen message on printer states cartridge error. The cartridge has been changed twice. Reinstalled cartridge many times, same message appears....

Asalam u alaikum Naveed
as u r getting the cartridge error the first thing to be checked is the expiration date on the cartridges, then take a moist cloth and clean the copper contacts on the cartridge keep the printer powered on and unplug the power cable from the back of the printer and clean the contacts on the printer as well connect the power cable and put the cartridges back.
If the issue still persists then unplug the power cable again
Press and hold # and 6 on the printer while keeping these tow buttons on hold plug the power cable back in . when the screen goes off release the buttons and press the power button to turn the printer on. it ll perform a semiful reset on the printer .
if the issue still persists then unplug the power cable again
Press and hold OK and CANCEL on the printer while keeping these two buttons on hold plug the power cable back in . when the screen goes off release the buttons and press the power button to turn the printer on .
If the issue still persists call HP CARE they ll replace the printer.

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1 Answer

50 service problem



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.




For your convienience, I will would like to provide the web link that shows the picture of the scene


link is:


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

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