HP LaserJet 2840 All-In-One Printer - Answered Questions & Fixed issues

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HP LaserJet 2840 all in one printer prints blank

Not to sound like a smart aleck...do you have enough toner in it? Can you print a test page? Sounds like a toner issue to me.
10/20/2019 4:47:33 PM • HP LaserJet 2840... • Answered on Oct 20, 2019 • 674 views
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2answers

HP 2840 All in one won't print color

printer is ok, check the connecting cable and drivers.
10/20/2019 4:45:14 PM • HP LaserJet 2840... • Answered on Oct 20, 2019 • 1,189 views
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2answers

Hp laser Jet Pro P1606dn 52.0 scanner error

Hp laser Jet Pro P1606dn 52.0 scanner error
12/31/2018 9:11:27 AM • HP LaserJet 2840... • Answered on Dec 31, 2018 • 6,249 views
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19answers

Scanner error 5

It's a problem with the scanner unable to "see" its home sensor. The home sensor is a black & white film strip stuck onto the flatbed glass, just above where the scanner head homes. The printer needs to "see" the two little black 1mm square bumps in the white area. When the scanner head "homes", as it just disappears under the plastic it should move left and right as it looks at the home strip. If it keeps going and chatters at the right-stop it didn't see the home strip.

This can be caused by dirty mirrors, or lens in the scanner head (clean them);
Low or off color light (replace the bulb or high voltage power board on bottom of scanner head);
Broken, cracked, or loose scanner head ribbon cable (replace or repair);
Dirty or crooked home sensor film strip (I had one of these: the black & white film strip stuck to the flatbed glass was slightly crooked, it doesn't take much!)
Dirty slide bar (clean & oil);
Bad stepper motor, bad scanner PCBA (replace).


7/22/2021 6:06:04 AM • HP LaserJet 2840... • Answered on Jul 22, 2021 • 40,447 views
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5answers

52 scanner error

HP LASER PRINTER ERROR CODE 52 – INCORRECT SCANNER SPEED ERROR


HP LASER PRINTERS 2, 2D, 3, 3D

1. Defective cable laser scanner to dc controller. 

2. Defective laser scanner assembly. 

HP LASER PRINTERS 2P, 2P+, 3P 

1. Bad scanner motor. 

2. bad dc controller. 

HP LASER PRINTERS 3SI, 4SI, 4V

1. Faulty cable assembly. 

2. Scanner motor problem.

3. Defective laser scanner assembly.

4. Defective dc controller. 

HP LASER PRINTERS 4, 4+, 5 

1. Faulty laser scanner cable. 

2. Defective laser scanner assembly.

HP LASER PRINTERS 4L, 4P, 5P, 5L, 5SI 

1. Temporary error. Scanner startup failure.

2. Improperly fitted scanning assembly.

3. Scanner cable problem.

4. Defective laser scanner assembly.

5. Defective dc controller board.

HP LASER PRINTERS 1200, 2200, 3100 FAX, 3200 FAX, 4100

1. Temporary error. scanner rotation error.

2. Replace contact image sensor. 

4. Replace laser scanner. 

5. Replace cables to laser scanner and engine board
HP LASER PRINTERS  1100, 2100, 4000, 4050, 8000
1. Scanner start up error
2. Replace scanner cable to the D.C. controller and back to scanner. Or replace scanner cable from engine board to scanner ***'y.
3. Replace scanner ***'y.
4. Replace the engine board.
5. Replace the D.C. controller only on the 8000.
HP LASER PRINTER 2300 ERROR 52.X
1. A temporary scanner start up error.
2. This can also be the shutter tab on the print cartridge. Replace the toner cartridge.
3. Replace the scanner ***'y.
4. Replace the engine board.
HP LASER PRINTERS 4200, 4300 ERROR 52.XX
1. Printer scanner speed error has occurred.
2. Replace laser scanner ***'y
3. Replace the D.C. controller ***'y
HP COLOR LASER PRINTER 4600, 5500 ERROR 52.XK, 52.XC, 52.XM, 52.XY
1. Error code K - No Black Color.
2. Error code C - No Cyan Color
3. Error code M - No Magenta color
4. Error code Y - No Yellow color
5. Replace laser scanner ***'y
6. Replace the D.C. controller ***'y
HP LASER PRINTERS 5000, 5100
1. Printer scanner speed error has occurred.
2. Replace laser scanner ***'y
3. Replace the D.C. controller ***'y
4. Replace cable ***'y from scanner to D.C. controller.
HP LASER PRINTERS 8100, 8150
1.Laser scanner error/start up/rotation error
2.Replace laser scanner ***'y.
3.Replace D.C. controller board.
4.Replace cable ***'y from scanner to D.C. controller

HP LASER PRINTER 4500, 4550

1. Temporary error. Laser scanner error/start up/rotation error

2. Replace laser scanner. 
3. Replace D.C. controller ***'y
HP COLOR LASER PRINTERS 4600, 5500
1.Laser scanner error/start up/rotation error.
2.Take the toners out and reseat them, or replace them
3. Replace laser scanner ***'y
4. Replace D.C controller board.

HP LASER PRINTER 8500, 8550

1. Temporary error. Laser scanner error/start up/rotation error

2. Replace laser scanner motor.
3. Replace D.C. controller ***'y

HP LASER PRINTER 9000 

1. Temporary laser scanner error/start up/rotation error

2. Replace laser scanner.
3. Replace upper cable guide assembly.
4. Replace DC controller. 
12/5/2017 10:08:15 AM • HP LaserJet 2840... • Answered on Dec 05, 2017 • 8,230 views
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2answers

2840 laser printer only prints on right side and nothing on left side

My Color LaserJet 2840 will only print on the right side of ...

h30434.www3.hp.com > ... > Scanning / Faxing
Apr 26, 2011 - 2 posts I have a HP Color LaserJet 2840. If I am ... My Color LaserJet 2840 will only print on the right side of the page, how can I fix this? ... If I am copying or printing from the computer, the printer will only print the right side of the page. ... something obstructing the laser scanner blocking that side of the media path.

HP 2840 printing problem ' FixYourOwnPrinter

www.fixyourownprinter.com/posts/46992
Feb 1, 2010 - ... Apr 19, 2007 at 10:57am. 0. HP Color LaserJet 2840 ... I have the same issue as above-Not printing on the left side of pages.I went threw the ...

HP Laserjet 2840, various problems ' FixYourOwnPrinter

9/22/2017 11:18:23 PM • HP LaserJet 2840... • Answered on Sep 22, 2017 • 424 views
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1answer

HP 2840 after initalisation errorcode 54.2

Either a bad cartridge or your carousel is not synchronized properly. If you just replaced a cartridge that is likely the source of the error. You can find videos on YouTube on fixing the carousel issue.
5/19/2016 4:03:35 AM • HP LaserJet 2840... • Answered on May 19, 2016 • 322 views
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1answer

Scanner Code Error 3

I suggest you download the HP toolbox according to your OS. This will give you a better understanding of the problem You can get the link from the HP support website
4/13/2016 11:47:47 AM • HP LaserJet 2840... • Answered on Apr 13, 2016 • 135 views
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1answer

Printing on the right side only and fases to the left also installed new toners

You have a Carousal Alignment problem. check this link.https://www.youtube.com/watch?v=xKwsYipQ0Ag otherwise take it the your closest repair center. Good Luck
12/29/2015 7:28:39 AM • HP LaserJet 2840... • Answered on Dec 29, 2015 • 77 views
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1answer

I installed an original Q3971A toner into the HP 2840 laser printer, However there is still a notice to install cyan catridge. Can you help please

PDF]HP Color LaserJet 2840 and 2820 All-in-One for small and ...

h10010.www1.hp.com/wwpc/.../clj2820_clj2840_bro.p...
Hewlett?PackardColour laser printing. HP Color LaserJet ... •Convert hardcopy documents into digital format for easy ... Color LaserJet 2820 All-in-One gives you high quality, ... Oth ring. Why HP. Save time. Printing a file. Printing a paper fax. Receiving a .... Install, configure and manage multiple networked ... Replace toner cartridges easily.

HP Environment: Product Safety Information - LaserJet ...

12/18/2015 12:41:55 AM • HP LaserJet 2840... • Answered on Dec 18, 2015 • 263 views
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2answers

Yellewo does not print

Must replace the nozzle/ cartridge carriage as the nozzle for yellow is most likely clogged If you need further help, reach me via phone at https://www.6ya.com/expert/steven_a67ead41eb5fc62a
4/30/2015 2:14:47 AM • HP LaserJet 2840... • Answered on Apr 30, 2015 • 316 views
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1answer

Scanner error 3

it is scan camera error, it required service, the top scanner assembly open it inside the assembly there are 4 lanses with little dust clen properly as wll as convex lance, and the scan glass and test it will work, if it does not work it menes the service have not done or you have to replace this assembly
4/26/2015 9:06:52 PM • HP LaserJet 2840... • Answered on Apr 26, 2015 • 79 views
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2answers

52 scanner error on HP Color Laserjet 2840

The device has experienced an internal hardware error. Recommended Action
  1. Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power and wait for the device to initialize.
  2. If the error is still unresolved, contact Hewlett-Packard for technical support to troubleshoot the problem. Call HP for telephone support
4/26/2015 8:58:01 PM • HP LaserJet 2840... • Answered on Apr 26, 2015 • 2,130 views
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2answers

Yelllow color is not printing

check yellow cartridge to see if toner seal tab has been pulled out
3/20/2015 1:15:36 PM • HP LaserJet 2840... • Answered on Mar 20, 2015 • 206 views
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1answer

Scanner error 3

flatbed scanner needs replaced
2/24/2015 2:06:10 PM • HP LaserJet 2840... • Answered on Feb 24, 2015 • 58 views
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2answers

Speed

Add memory to the machine and it should resolve your issues. The 2840 comes with 96MB built-in and has one slot open for additional memory located under the right side cover. It can take a max of 224MB total. I would recommend adding a 128MB memory card to max out the machine. It takes 100 pin, 133MHz, SDRAM.

Don't by it from HP as they list it at $500.00 or so. Buy the clone memory for around $25.00 for 128MB.

Here's a link to source the memory:

http://www.memory.com//net/System.aspx?model=23451

Hope that helps you.
2/13/2015 3:07:21 PM • HP LaserJet 2840... • Answered on Feb 13, 2015 • 96 views
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3answers

2840 printer -- can't print because document is

Basically it is telling you it doesn't have the memory required to process the page (usually because of graphics). If this is the case, you can try setting the resolution in the print driver to a lower setting (sometimes referred to as quality) so that the memory can handle the graphics.
2/13/2015 3:02:49 PM • HP LaserJet 2840... • Answered on Feb 13, 2015 • 255 views
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2answers

"Page Too Complex" message

Press ENTER to clear the message.

Allow the device to finish the job, or press CANCEL to cancel the job.

Lower the USB speed on the product by turning off "High Speed USB". Following are instructions on how to do this from the Secondary Service Menu:

To access the Secondary Service Menu press the Menu button.

Now press the #2 button and use the < arrow to navigate to the High Speed USB selection.

Press Enter and then use the arrow key to go to Off and press Enter again.

Press the Cancel button twice to exit the Secondary Service Menu.

2/13/2015 3:01:16 PM • HP LaserJet 2840... • Answered on Feb 13, 2015 • 255 views
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2answers

Not printing properly

Please Remove The Printer Driver from Pc And Reinstall it
2/13/2015 3:00:45 PM • HP LaserJet 2840... • Answered on Feb 13, 2015 • 106 views
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2answers

Error Message "Page too Complex"

Hi Sccfire, This apparently is a fairly common problem with the 2800 series printer and associated with connection to a PC using USB. It can only be overcome by manually configuring the printer?s USB port to work in standard mode rather than at high-speed USB2.0 mode which probably won?t be to much of a problem. Here is a link from a support page on HP?s site that should walk you through the process: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00506095 Let us know how it goes and please don?t forget to rate the posting.
2/16/2016 5:51:24 PM • HP LaserJet 2840... • Answered on Feb 16, 2016 • 2,985 views
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