Lexmaekx1240 bought a new color ink because it was empty. black is low but not empty when i installed the new ink the alignment page prints out with missing lines and no black

Follow the instructions below to install the print cartridges for the first time. Installing print cartridges Step one: Install the print cartridges Follow these steps to install the cartridges.

1. Open the cartridge door. The carriage moves to the far right side of the product. Figure 1: Open the cartridge door
2. Remove the new cartridge from its packaging and, being careful to touch onlythe black plastic, gently remove the plastic tape by using the pink pull tab. Figure 2: Remove tape from cartridge 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 cartridge ink nozzles or copper contacts. Touching these parts will result in clogs, ink failure, and bad electrical connections.Do not remove the copper strips. They are required electrical contacts. Figure 3: Do not touch the ink nozzles or copper contacts.
3. Slide each new cartridge forward into the empty slot. Then gently push theupper part of the cartridge forward until it clicks into place.
   • Insert the tri-color cartridge into the left slot.
   • Insert the black cartridge into the right slot.
   Figure 4: Insert the cartridge
4. Close the cartridge door.

Step two: : Align the print cartridge The product prompts you to align cartridges every time you install a cartridge. You can also align the cartridges at any time from the control panel, or byusing the software you install with the product. Aligning the cartridgesensures high quality output.

1. Make sure you have letter or A4 unused plain white paper loaded in the input tray.
2. Press OK. The product prints an alignment page.
3. Place the alignment page print-side down on the scanner glass.
4. Press OK to scan the alignment page. When the scan finishes, the alignment is complete.

NOTE: If you have colored paper loaded in the input tray when you align the cartridges, the alignment will fail. Load unused plain white paper into the inputtray, and then try the alignment again.

Step one: Complete the alignment process If you have already installed new print cartridges, follow these steps to complete the alignment process.

1. After installing a new print cartridge, wait at least 20 seconds for the print cartridge alignment process to start.
2. Wait for the print cartridge alignment process to fully complete.
3. Make sure that the alignment page has printed on plain, white paper that has no other printing on it. If you need to create a new alignment page, load the tray with letter or A4 unused plain white paper and turn the product off and on again to create the page.

If an alignment page does not print when the product is turned on or off, the issue is resolved. If an alignment page continues to print when the product is turned on or off, you should replace the cartridges with new HP cartridges. Continue to Step two: Remove the print cartridges. Step two: Remove the print cartridges Follow the steps below to remove the cartridges. NOTE: When you remove and install the same print cartridge, the unit will not align the print cartridge as the unit remembers the alignment values for that print cartridge.

1. Press the Power button to turn the product on. The Power button is lit when the unit is on. Figure 1: Power button lit
2. Make sure that the paper tray is down, and letter or A4 unused plain white paper is loaded in the paper tray.
3. Lower the access door until it stops. Make sure that the print carriage moves to the right side. Figure 2: Lower the access door
4. Wait until the print carriage is idle and silent, and then using your thumb, lightly press down on a print cartridge to release it. Figure 3: Print carriage
   • If replacing the tri-color print cartridge, remove the print cartridge from the slot on the left.
   • If replacing the black or photo print cartridge, remove the print cartridge from the slot on the right.
   Figure 4: Proper position of the print cartridges 1 - Tri-color print cartridge 2 - Black or Photo print cartridge
5. Pull the print cartridge toward you and out of its slot.

Step three: Install the new print cartridge

1. 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. Figure 5: Remove the tape 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.
2. 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.
   Figure 6: Print cartridge locations 1 - Print cartridge slot for the tri-color print cartridge 2 - Print cartridge slot for the black and photo print cartridges
3. Close the print cartridge access door. Figure 7: Closing the print cartridge door
4. If you installed a new print cartridge, the print cartridge alignment process starts after about 20 seconds.
5. The unit aligns the print cartridges. Recycle or discard the print cartridge alignment sheet.

If you have completed all the steps listed above and are still experiencing a problem, service the product. Cause The product aligns the print cartridges every time at cartridge installation or replacement to ensure the highest-quality prints. The alignment page continues to print when the product is turned on or off, or when a print job is started, for any of the reasons below.

• The automatic alignment process is not complete.
• The ink cartridges are not properly installed.
• One of the ink cartridges is defective.
• One of the ink cartridges is low or out of ink. Black and all three colors must be available.
• Protective tape on a new ink cartridge has not been removed.
• Contacts on the ink cartridge are not meeting the contacts in the carriage correctly.
• Cartridge is remanufactured or refilled. Refilled or remanufactured ink cartridges may have been damaged during the refilling process or have clogged ink nozzles.
• The product needs to be serviced.

All colors need to be present to pass alignment. Usually what I see is the yellow is empty. You can blot the print cartridge on a damp paper towel to verify the inks are working and this also cleans the head.

have you installed the cartridge correctly??? make sure you did

try to print a few pages, to get the ink going.

try test pages, try the aligning procedures as well.

I just had the same issue (align page not detected).

We had just re-installed the empty color cartridge back into the printer (long story but basically we knew we could only print B/W).

The align page printout had a lot of empty spaces around the black lines. This is apparently where the color lines are supposed to print.

Without those color lines, the printer would not detect the align page as color is part of the alignment being done.

Since we only wanted black printouts, I pressed 'cancel' to stop the alignment process, and now we just hit the Black copy button and ignore the alignment prompt on the printer window.

The HP site (enter psc750 in product window) has some helpful ideas as to what the problem might also be. It could be the shipping tape is still on the new cartridge (and preventing the black or color from printing on the align sheets) etc.

yes you need to install all cartridge before printing any page ...I have also this model...but u need to install all 4 cartdge. before printing any page wheather color or blacknwhite..

i have an mp170 all in one and when you fill the cartriges they dont show up as full cannon put a chip in the cartridge to con people into buying new ones try siting the cartridges in warm water for a few hours then blot the cartridge with tisue paper if it dont blot out the ink the cartride is finnished and you need a new one .To align the cartridge you flick through the menu on the printer not pc screen look for alignment page print this off then you have to pick the dark boxes on the sheet shade the bit next to it and put on your scan bed and click ok it should scan the sheet and reset the alignment

you need to print only in black if that is all the ink you have, and also you need to remove the color cartridge as it still registers in the printer as able to be used, although it is empty or near so. Did you remove the tape over the print head fron the new ink cartridge? Do a print head alignment, or use the toolbox icon to tell the printer that you just replaced the cartridge. Some HP models chip the ink cartridges so even a refill wont register as a full tank and the printer wont print. chip needs to be reset (difficult) or just replaced with a new cartridge.

I just got off the HP help line.  After changing my black ink cartridge a test page was printing each time I turned the machine on.  This is very costly, in both time and ink as the cartridges themselves for this machine hold very little ink.  I tried to learn from HP tech how to turn off the test-print while keeping my color cartridge empty.  It turns out that you cant do it.  HP requires you to keep buying and using cartridges whether you need them or not.If you buy the color ink it will use it up in its testings.  And if you dont buy the color cartridge it will use up your black ink by printing the test each time you turn on the printer.  The printer was inexpensive sure, but I'm paying for it in wasted ink. 

So if the magenta or yellow are not showing up, it may mean you have installed an empty (or dried up) color cartridge. If you have it, put the "low" volume color cartrige back in and print an alignment page. If you don't have the cartridge, no problem, just print a page from Google. Don't worry about the alignment until you print from Google. See if color is even available. ZT3000 "Beta tester of "0"s and "1's"