The printing test pattern do not shown the yeloow color pattern

Recommended that you have a tech come out and look at it might have a bad LED assy. for the Magenta Image unit. All other color print OK? Can you print gradation test pattern for each color in service mode? Meter count, details, stop 00 stop 01 Test Output Gradation pattern select magenta. If you open the side cover after printing a document with the color magenta try to catch a print of paper do you see the color magenta on the transfer belt if yes the drum is ok could be the transfer belt magenta 1st transfer roller on the belt replace the belt assy.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Dude, in this case, print head may be clogged. Please print nozzle test pattern and check if cyan nozzle is printed correctly.
To perform nozzle check pattern, please see this tutorial (it's just similar with this model).
Print Nozzle Check Pattern

If a gap is present decrease the value by going to Menu, Calibration, Setting and pressing the Down Arrow to decrease the percentage shown to match what setting is best on the test pattern. Press Enter to save the value. If the printer does not show multiple test patterns perform the Feed Calibration, Test Print again to check the results.
If an overlap is present increase the value by going to Menu, Calibration, Setting and pressing the Up Arrow to increase the percentage shown to match what setting is best on the test pattern. Press Enter to save the value. If the printer does not show multiple test patterns perform the Feed Calibration, Test Print again to check the results.
Tech Tip: The Feed Calibration is a very fine adjustment meaning that an incremental adjustment of .05% or 10% is very small. Some media will require an adjustment in much larger steps.
Note: The Feed Calibration setting on the printer will be overridden by Versaworks as a default. This can lead to a very confusing scenario where the Feed Calibration setting doesn't appear to make any adjustment. Please see the next page for information on setting the Feed Calibration in Versaworks.

Once the proper Feed Calibration has been established on the printer it is important to make sure this setting is correct in Versaworks. Once Versaworks is open and a job has been loaded, perform the following steps:
A. Double click on the print job to bring up the Job Settings window and set up your media size, copies and other relevant items under Layout.
B. Select the Quality tab and Select the proper Media Type for the job. This step is critical because the Feed Calibration is tied to the type of media being used. When the Media Type is changed the Feed Calibration setting will change to the setting which is default for the Media Type.
C. Next select the Printer Controls tab on the left hand side and under Feed Calibration Controls choose Use Printer Setting.
D. Select OK to save the settings.
Tech Tip: In step C you can also select Use Custom Settings and enter in a value for the Feed Calibration. This allows for making corrections to the Feed Calibration without changing the settings manually on the printer. If you choose Use Default Media Settings or Use Custom Settings the value that has been set on the printer will always be overridden.
Tech Tip: In addition to having multiple test patterns which make for a quick and easy selection to be made the RS, XJ & AJ printer models allow adjustment of the Feed Calibration mid-print by taking the following steps:
A. Press the Menu key
B. Scroll to Calibration, Setting and pressing the Down Arrow to decrease the percentage shown or Press the Up Arrow to increase the value.
C. Press Enter to save the change in value.

1. First, check your cartridges. HP cannot guarantee the quality of remanufactured or refilled cartridges.
2. Second, make sure your paper is not causing the problem. Paper that does not accept ink well can cause your images to smear or bleed. Plain paper is not the best choice for high-density graphics. Click here to see how to pick the best paper for your project .
3. If the paper is not the problem and you are using genuine HP cartridges, print a clean test to see if the printer and cartridges are functioning properly. Load the printer with clean, plain, white paper and print a clean test page. To see how to print a clean test page, see your printer's User's Guide , or see HP Deskjet Printers - How To Print Internal Tests , or HP All-in-One Product Family - Printing Self-Test Reports .
4. Evaluate the clean test page. Different printers produce different pages, but you should recognize elements from the examples below on your test page. In general, cartridge and printer problems are indicated by streaks, missing colors, or wrong colors.
   • Examples from a good printer and cartridges (your test page may not look exactly like this): Figure 1: Solid colors that match color dots on cartridge label Figure 2: Pattern unbroken, or broken in only a few places
     
     If your test page looks more like the good examples above than the bad examples shown in the next two sections below, the printer and cartridges are probably not causing the problem. Click here to continue troubleshooting .
   • Examples from a failing printer or cartridges - streaked or broken bars or lines Figure 3: Fading, missing, or streaked bar - low-ink or empty cartridge, clogged nozzles, or electrical problems
     
     
     
     
     
     Figure 4: Color completely missing (magenta bar missing below) Figure 5: Lines broken randomly - clogged nozzles
     
     Figure 6: Lines broken in pattern - dirty contacts or other electrical problems
     
     
     
     Figure 7: Color completely missing (magenta pattern missing below) If your test page looks like these examples, you probably have a cartridge that is empty, has clogged nozzles, or dirty contacts. Click here to continue troubleshooting .
   • Examples from a failing printer or cartridges - colors do not match the color dots on the cartridge label (Note: do not compare the test page colors to the colors of the examples on this web page. Your monitor may not display the colors properly). If your test page looks like these examples, you probably have a cartridge in which the inks have mixed. Click here to continue troubleshooting .

i apologize for the inconvinience.

the possible reason why its printing the right color, is bec. some of the nozzles might be clogged by dried inks, so when inks come out, the combination of colors are not balance. try printing a nozzle check first, if the nozzle check have gaps or breaks, try head cleaning, nozzle check after it so you can see if it improve or still w/ gaps, just do nozzle check, head cleaning, then nozzle check, head cleaning alternately until no more gaps then try to print.

Printing a nozzle check pattern
Load paper in your printer
In SelecType mode, press the Paper Feed () or Paper Feed () button until TEST PRINT is displayed on the LCD panel, and then press the SelecType button.
Press Paper Feed () or Paper Feed () button to display NOZZLE CHECK
Press SelecType button to display PRINT
Press the Enter button. The nozzle check pattern is printed as shown below. After printing, printer exits the SelecType mode and return to the READY status.
Nozzle check pattern examples:
good
head cleaning necessary


headcleaning: press the cleaning button for 3 seconds

Follow these steps to print a nozzle check:

1. Turn off the Stylus CX.



2. Load letter-size paper in the sheet feeder.



3. Press the ink and On buttons together and hold them down for about 3 seconds.
   
   The Stylus CX turns on and prints a test pattern, which includes anozzle check. Shown below are some examples of what the nozzle checkmay look like.
   
   Nozzle check pattern with no gaps
   Nozzle check pattern with gaps

If any of the colors is missing, perform a head cleaning routine. It appears that the magenta head is having some problem. Try printing again after performing a head cleaning task. If the problem continues you might need to replace the head.

Thank you.

Have you checked the driver to see if it is defaulted to black in the properties?
And have you scrolled your machine set up on the screen to be sure it did not get set to black?
Print out a test pattern and see if there is color on it. An internal test pattern. There are sample prints you can print out. If they come out in color, then your driver is most likely set to black and white.
Go into the properties of the driver and then graphics. See how it is set.

IN THE PRINTER SETTINGS YOU MAY HAVE THE "PRINT TEST PAGE" SELECTED

You have to run a head cleaning cycle:
Follow these steps to clean the print head:

1. Make sure the Stylus CX is on and the ink light is off.
   
   
2. Hold down the ink button for 3 seconds until the On light starts flashing. The Stylus CX runs a head cleaning cycle and the On light flashes.
   
   Caution: Never turn off the Stylus CX while head cleaning is in progress. You may damage it.
   
   
3. When the On light stops flashing, turn off the Stylus CX.
   
   
4. Load letter-size paper in the sheet feeder.
   
   
5. Press the ink and On buttons together and hold them down for about 3 seconds. The Stylus CX turns on and prints a test pattern, which includes a nozzle check. Shown below are some examples of what the nozzle check may look like:
   
   Nozzle check pattern with no gaps Nozzle check pattern with gaps
   
   
6. Examine the nozzle check. If it does not look like the nozzle check pattern with no gaps as shown above, repeat steps 2 through 6.

Note: If you don't see any improvement after cleaning the print head three times, turn off the Stylus CX and wait overnight. This lets any dried ink soften. Then try cleaning the print head again.

If you do not use your Stylus CX often, it is a good idea to print a few pages at least once a month to maintain good print quality.

try to clean the print head 3 times and do a pattern test if it still doesnt work then it has to be service