Hp 4650n magenta is low (< 300 sheets left)...all pages printed have magenta spots on them...should i go ahead and install the new cartridge or there should be a "clean cartridge" button, but i cannot locate it on menu...

YOU PROBLEM IN THE FUSER STAGE MAYBE FUSER FLIM IS PROBLEM

OK now this might seem bizarre, but did you go ahead and click the "Black Only" print option?

I have a C6180. Just installed all new cartridges. Tried to print and got the message that Cyan is empty. Tried all sorts of things. Then out of frustration clicked the Black Onl option. Document came out printed in color! Double checked with a picture that has lots of cyan colors. It all printed too! Go figure.

Are they HP cartridges or knock offs ? Cartridges have circuits in them and they will not work if they don;t match up with the printer. If it continues..contact HP. HP has gotten real messed up in their attempt at preventing people from using knock off cartridge. So much that sometime they screw up their own HP cartridge products.

Is it a genuine HP cartridge.
refilled one will show ?
Some model will not print if it thinks there is no ink.
There are reset devices for refill ink cartridges. cost very little of ebay etc.

There are replacemetn parts for the print head, just like there is for the cartridge, though the expense may be more then the printer.

The problem you are describing with the yellow cartridge sounds like ink starvation possibly due to a clogged print head or an air bubble in the print head. Since the machine is so new I would contact HP to get the print head replaced. As for the magenta cartridge, exchanging it for a new one at the store you bought it from should fix the problem. It sounds like the chip on the one you have is either damaged or wasn't set to read full ink levels.

1.Try placing sheet of Magenta print on copy board, and run many copies .  Run head clean after about each 50 sheets. 

You need a new printhead.

This is caused by toner contamination in the laser scanner unit, it is quite a complex job removing and cleaning the laser scanner. I would suggest you contact HP regarding the repair.

Follow these instructions when the ink level is low.

Note When the ink level for the print cartridge is low, a message appears on

your computer screen. You can also check the ink levels by using the software

installed with the HP All-in-One.

When you receive a low-ink warning message, make sure you have a replacement

print cartridge available. You should also replace the print cartridges when you see

faded text or if you experience print quality issues related to the print cartridges.

To order print cartridges for the HP All-in-One, go to www.hp.com/learn/suresupply. If

prompted, choose your country/region, follow the prompts to select your product, and

then click one of the shopping links on the page.

For a list of print cartridge numbers, see the back cover of this guide.

To replace the print cartridges

1. Make sure the HP All-in-One is on.

Caution If the HP All-in-One is off when you open the print cartridge door

to access the print cartridges, the HP All-in-One will not release the

cartridges for changing. You might damage the HP All-in-One if the print

cartridges are not docked safely on the right side when you try to remove

them.

2. Open the print cartridge door.

The print carriage moves to the center of the HP All-in-One.

3. Wait until the print carriage is idle and silent, and then lightly press down on a

print cartridge to release it.

If you are replacing the tri-color print cartridge, remove the print cartridge from the

slot on the left.

If you are replacing the black or photo print cartridge, remove the print cartridge

from the slot on the right.

Chapter 8

28 HP Deskjet F300 All-in-One series

Maintain the HP All-in-One

1 Print cartridge slot for the tri-color print cartridge

2 Print cartridge slot for the black and photo print cartridges

4. Pull the print cartridge toward you out of its slot.

5. If you are removing the black print cartridge in order to install the photo print

cartridge, store the black print cartridge in the print cartridge protector or an

airtight plastic container.

If you are removing the print cartridge because it is low or out of ink, recycle the

print cartridge. The HP Inkjet Supplies Recycling Program is available in many

countries/regions, and lets you recycle used print cartridges free of charge. For

more information, go to the following website:

www.hp.com/hpinfo/globalcitizenship/environment/recycle/inkjet.html

6. Remove the new print cartridge from its packaging and, being careful to touch

only the black plastic, gently remove the plastic tape by using the pink pull tab.

1 Copper-colored contacts

2 Plastic tape with pink pull tab (must be removed before installing)

3 Ink nozzles under tape

Caution Do not touch the copper-colored contacts or ink nozzles.

Touching these parts can result in clogs, ink failure, and bad electrical

connections.

User Guide 29

Maintain the HP All-in-One

7. Slide the new print cartridge forward into the empty slot. Then gently push on the

upper part of the print cartridge forward until it clicks into the socket.

If you are installing the tri-color print cartridge, slide it into the left slot.

If you are installing a black or photo print cartridge, slide it into the right slot.

8. Close the print cartridge door.

9. If the print cartridge alignment sheet prints, load it on the left front corner of the

glass with the top of the page to the left.

10. Press the Scan button.

The HP All-in-One aligns the print cartridges. Recycle or discard the print
cartridge alignment sheet.