Top 10 HP LaserJet 2840 All-In-One Printer Questions & Answers

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).

Thanks CoolDragon. Ifollowed your advice and eventually replaced it.

After trying to pull out and reseat the fuser a few times (I would even get one or two prints out of it each time), I finally ordered another fuser and problem has gone away. I did google and purchasing site searches (pricegrabber, pricewatch, etc) and found a decent priced site, that also gave discount for your returned bad unit (they gave you so many days to return it), otherwise they'd charge your credit card for the extra dsicount they had origanlly given.

ok, for those who are having troubles releasing the clutch.
when i fixed my printer, i didnt even know there was such a release.

i fixed it in an other way (not for the faint hearted)
open the printer, remove all cartridges and photoconducter unit.

when misalligned, you will notice the guides where the toner cartiridges slide into place, left and right, are shifted.
the part of the printer body guides misalign with the carousel guides.

basically, what you need is a big screwdriver.
push the big screwdriver on the right side between the carousel and the body.
the black plastic ferriswheel will bend inwards, enough to go free from the little white driving gear wheel.
now move the right ferris wheel 1 notch into position.
ready. reinstall toners etc.

be carefull not to break it.
it does work, done it on 3 machines now.

the only reason why this happens which i could find,
is that there was a toner cartridge that is stuck.
feel if you can rotate the white cartridge gear by hand.
if not, that is your problem.

possible lesson:
do not over fill your cartridge.
it is perfectly possible to refill, done that many times with these machines, but dont overfill.
ot maybe it is moist in the toner or something.
these cartridges dont have eternal life

good luck, dj

when poering on this HP 2840 it says" Scanner Error 5"
what does it mean? How to get a solution?

MAKE SURE THE PRINTER IS OFF AND INPLUGED BEFORE YOU START! The fuser is located in the back of the printer. You should see two blue pads where your index finger and thumb (on both hands) should pinch together then pull the fuser out. Re-seat the fuser back into its original position and wait 20 minutes before turnging Unit back on. If you do not wait 20 mins then the 50 error will appear again even if the problem is fix. Once you wait 20 minutes and it still gives you a 50 error you must replace the fuser. I have a great place to purchase fuser so let me know if you nee contact info!

Your problem is in the fuser. 50.2 means the fuser is not reaching temerature properly in the allotted time. It either has a burned out ceramic heating element or thermistor (hi/low thermometer).

Here's a link to a free service manual that will walk you through testing it.

http://www.feedroller.com/Store/Service%20Manual/Color%20LaserJet%202820,%202830,%202840%20Parts,%20Service%20Manual.pdf

Hope that helps you. If so hit it with a FIXYA rating. :o)

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. 

there is something wrong with your drum.. try to replace a new chip for the drum make sure that the chip is working.... if that did not work. see if there is any damage in your drum.. If not replace a new drum..

Memory Supply Error 10.00.00 The printer is unable to read or write to the print

cartridge e-label, or the e-label is not on the cartridge.

Basically what is happening is the printer cannot read the small chip on the toner cartridge. The chip is located on toner cartridge as it is inserted into the printer. 1 - Make sure the toner is firmly seated into the printer. 2 - Power cycle the printer with the toner out of the printer. Install the toner back into the printer. 3 - Install another toner cartridge. 3 - Verify that the e-label connector is firmly seated in connector

Contact a local HP Authorized Service Center for further assistance.

Solved for HP Laserjet P1606DN
I started getting this error when I moved my printer from my obvious back home.
Turns out there is a spring like object that got shifted at the front of the printer.
The video below shows how to fix it. Its in Hindi, but just watch and follow what he does.
https://www.youtube.com/watch?v=aZ_oI6-6phs
I had pull to my printer a part to get to the spring. I used the video below for my P1606DN model. You will have to look up a similar instructional video for your specific model.
Link to disassembly https://www.youtube.com/watch?v=QpRE5b9mW2M