problem with my HP color laserjet 2840 printer

stupid queston...i can't scan or i don't know how to. i try to and it reads "not set up on PC" what do i do?

1. take the ADF off just unhook the two sides (don’t unscrew it from its arms) and unplug it from the screener
2. There are 6 screws to take out, 4 you can easily see and two you can’t see. For the two you can’t see are underneath the “control-panel faceplate”. The faceplate will come off by just pulling on one end and slowly pulling all the way up.
3. not sure what you call it, but underneath the screener’s bulb you will see a mirror. Take a Q-tip and clean it then take a can of air and spray it. After you do this, put the screener bulb unit at the left end of the unit, don’t go all the way over just where it would go if it was working right.


Put top back on, (you don’t need to put the ADF back on yet.
Turn on hp unit and see if it works. If it doesn’t work try it again. I’ve been working on this for three days, and I’ve got the unit to work fine after I cleaned it.

If it's under warranty you might want to locate a HP AWDP to help you out:

http://www.fixyourownprinter.com/forums/printer/43254#1

If it's out of warranty start at the beginning and give us a thorough description of what's going on. (motors running, lights falshing, what's on the display, etc.)

Start with:

I turn the printer on and...

hi,

I turn the printer on and it comes on but when initialising after 5 minute, it goes off and the display panel goes off too.
The light(LED) on the Fomatter board is always on and the motor is runing.
PRINTER not on warranty.

Thanks

CHIMA

Its the power supply. Its a common issue with that unit

You've answered a 5 month old post, but to add to the discussion, HP has admitted to it being a design issue and there is a service note where they supply the $300 power supply for free under an extended warranty. I do not know how long the extension runs.

EFFECTIVE DATES

Start: 2007-01-18

Expiration: 2009-01-18
WARRANTY COVERAGE

Labor Covered: By Division

Parts Covered: By Division

I've done one of these using HP's Chinese instructions. They were actually in English, but the photos were from right to left so you had to hold them up to a mirror.

Yea, Ive done a few myself. Currently I have an issue with a 2840, the panel says "scan error 5" Ive seen the error before but dont remember what the fix was. If I recall, it was not the document scanner, but a board or something else. Do you remeber what that was?

Sorry, I've only worked on 2 of them and neither had that error. Maybe dmz or Stephen would know, except Stephen is laying on a beach somewhere.

and dmz does not have a clue.

Did Stephen say what beach he's basking on? I always take my laptop with me when I go on my brief 2 day vacation trips.

Found this on hp forum.

http://forums1.itrc.hp.com

yes i did, the problem was from the display pannel.

Thanx
CHIMA

Read the whole thread!

Check the cable connections, especially the plug with the multicolored wires.

Then the scanner is the next recommended part to swap.

The formatter could also cause this problem.

I just had this problem (scanner error 5) and replacing the scanner fixed that problem. $66 + shipping from partsurfer.hp.com.

The part # I have is Q3948-60191 and the price is $66. Are you looking in HP US? It may have a different price if not.

My Color Laser is just beyond it's warranty. I shut it off for a week while I went on vacation, and upon my return, it only prints on the right 25\% of the page. Both color and B&W fade in from nothing to OK by the right side of the page. Any ideas?

Really gotta love HP... The minute it went out of warranty,
they won't even talk to you without a credit card in hand.

Thanks in advance!

[email protected]

Thanks.

my clj 2840 does not recognise any ogof the print cartridges after
initialization. The op-panel displays a ? mark fot the status of each cartridge.
Does anyone know how o fix this problem....Lloyd

I am having that problem with my 2840. I turn on the printer is seems fine of a few seconds and then shuts off. I don't believe I have an extended warrenty. Is there anything I can do to fix this issue without calling HP?

Thanks!
Cree

Power supply will fix it. That was a common problem.

Scanner error 3, involves what, and what do we need to do to remedy this situation?

My HP Laserjet 2840 automatic document feeder will not pull documents in to be scanned or copied. The document is recognized and the bottom rollers are rolling, but the small roller on the feeder is not moving. The warranty expired in April.

My Color Laser is just beyond it's warranty.

Only had an alingment problem, fixed it, now I get 59 0C error. try on/off and the same error again.

There is a noise at the next gear of carousel-engagement motor, because it stops at a gear's flag and the motor try to go on, as it can´t, make the noise and stops for security, after 2 seconds.

Thanks

Hi my printer having the same problem.it showing error 5.Please advice ME how can i rectify the problem

Regards
aRUNKUMAR

Read the thread. It is a problem with the document scanner.

I have problem with my hp color laserjet 2840 all in one. I cannot photo copy and scan it shows Scanner error 5. What I will do for this?

is there any way to switch the scanner off my 2840 printer it says the scanner bulb is bad and I dont ever use it ,I just only want to use the printer. thanks

hi guys having problems with my HP 2840 PRINTER STARTS UP THEN SHUTS DOWN ANY IDEAR

If the power goes completely off, then the issue is the low voltage power supply. Pain in the a** to change out.