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Problem is usually a dirty charge corona wire. There is a cleaner on the drum unit, slide this across and back 2 or 3 times. If not, then the corona wire itself is missing or broken, change drum.
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Important thing: HP inkjet printers having self align technology & its aligns automatically after replacing the ink cartridge/s.In the process of align it will prints align page &it will read it on the model. Suppose if you replaced yellow cartridge, as usually it will print align page, but if one or more cartridges not printing properly align will not completes. Results every time it will prints the align page when its switching on. Align will completes only when all cartridges/print heads are in healthy condition.. Check the alignpage find out which colors are not printing properly, replace it to over come from this issue. Now you decide what to do?..
Usually the serial number can be found either in the back or in the bottom of the printer.
If your printer is working you can print a self diagnostic page which would have the serial number.
To print the Self-Test Diagnostic Page • Device control panel: Press Setup, select Print Report, select Self-Test Report, and then press OK. • Toolbox (Windows): Click the Services tab, and then click Print a Test Page.
It seems there is a possibility of a problem with the printer itself, or perhaps the cartridges. You should first self-test the printer. Since we are unsure where the problem exists, we must do eliminative troubleshooting to rule out parts of the printing system. The self-test allows us to rule out software and the cable by testing the hardware by itself. Please note that this is not a "fix," but rather a diagnostic test to determine if your hardware is at fault.
Please disconnect and then reconnect the power supply on the printer and make sure it makes a setup noise when the cable is reattached.
Next, try this printer self-test by following the steps given below:
1. Press the "Mode" button until "Copy" light comes on.
2. Press the "Options" button nine times. The "Maintenance" option should appear on the LCD display.
3. Press the right arrow key three times. The "Print Test Page" option should appear.
4. Press "Select."
The self-test should print out some text at the top of the page and a black and gray bar below the text. Should this test fail, try it again without cartridges installed. If the self-test still fails to take paper in and make sounds like the carrier is moving across the paper, this is a hardware issue, and the printer will require service.
If the self-test completes without any cartridges installed, run the self-test again with the color cartridge installed. (If you have both black and color cartridges, after this test, run the test again with just the black cartridge installed.) If you find that either cartridge causes the self-test to fail, please let us know.
If the self-test prints, but has lines or smudges or other print quality issues, please let us know.
You may clean the cartridge by following the steps given below:
1. Remove the cartridge or cartridges from the printer. 2. Get a damp paper towel. 3. Set the ink cartridge right side up on the damp paper towel so that the ink nozzles are against the towel and hold the cartridge in this position for about 15 seconds. 4. Now wipe the print head (on the bottom where the ink comes out) across in one direction only (left to right) until it looks clean. 5. Next dab the cartridge on the towel to make sure that the ink is flowing. 6. Snap the cartridges back into the printer.
Next, I'd like you to attempt this printer self-test by following the steps given below:
1. Disconnect the power cord from the back of the printer.
2. Press and hold the button on the printer panel.
3. Reconnect the power cord and keep holding the button on the printer panel until the printer starts to pull paper.
4. The printer should now print a test page. Please note that the test is continuous. To stop the test, disconnect the power cord.
The self-test should at least print out a set of either black or color bars, if not both (if you have a printer with both color and black installed simultaneously). Should this test fail, try it again without cartridges installed. If the self-test still fails to take paper in and make sounds like the carrier is moving across the paper, this is a hardware issue, and the printer will require service. If the self-test completes without any cartridges installed, run the self-test again with only the color cartridge installed. (If you have both black and color cartridges, after this test, run the test again with just the black cartridge installed.) If you find that either cartridge causes the self-test to fail, please let us know.
If the self-test prints, but has lines or smudges or other print quality issues, let us know.
Please remove the cartridges from the printer. Take a dry lint free paper towel and gently wipe the contacts on the back of the cartridge (not the bottom from where ink is present). Wipe the contacts inside the printer (on cartridge carrier). Please snap the cartridges back into the cartridge carrier.
Next, try this printer self-test by following the steps given below:
1. Please turn OFF the printer.
2. Press and hold the "Color copy" button.
3. Now, turn ON the printer.
4. Once you see "0" on the display, release the "Color copy" button.
5. Press the Up arrow button until "2"appears on the display.
6. Press the "Black copy" button to start the self test. Once the page has printed, the printer will stop printing.
The self-test should at least print out a set of either black or color bars, if not both (if you have a printer with both color and black installed simultaneously). Should this test fail, try it again without cartridges installed. If the self-test still fails to take paper in and make sounds like the carrier is moving across the paper, this is a hardware issue, and the printer will require service. If the self-test completes without any cartridges installed, run the self-test again with the color cartridge installed by itself. (If you have both black and color cartridges, after this test, run the test again with just the black cartridge installed.) If you find that either cartridge causes the self-test to fail, please let me know.
If the self-test prints, but has lines or smudges or other print quality issues, let us know. This includes any print quality issues, we need to know if the problems you have with your black or color are based in the printer, or communications with your computer, or the computer's software.
If the self-test prints your test bar(s) clearly, the printer hardware is not at fault.
Please remove the cartridges from the printer. Take a dry lint free paper towel and gently wipe the contacts on the back of the cartridge (not the bottom from where ink is present). Wipe the contacts inside the printer (on cartridge carrier). Please snap the cartridges back into the cartridge carrier.
Next, try this printer self-test by following the steps given below:
1. Please press the "Options" button 10 times. "Cartridges" should now appear in the display screen.
2. Press the "Left Arrow" button once, which then brings you to the "Self-Test" option.
3. Press the "Select" button once. You will hear a series of clicks.
4. It should print out a sheet of paper with horizontal color and black lines and smaller vertical lines.
You should see text followed by a thick 1-inch black bar. Under this bar, should be a process gray bar about ½-inch thick. Below this line should be a set of railroad like bars of cyan, magenta, and yellow.
Should this test fail, try it again without cartridges installed. If the self-test still fails to take paper in and make sounds like the carrier is moving across the paper, this is a hardware issue, and the printer will require service. If the self-test completes without any cartridges installed, run the self-test again with the color cartridge installed. (If you have both black and color cartridges, after this test, run the test again with just the black cartridge installed.) If you find that either cartridge causes the self-test to fail, please let us know.
If the self-test prints, but has lines or smudges or other print quality issues, please let us know. This includes any print quality issues, we need to know if the problems you have with your black or color are based in the printer, or communications with your computer, or the computer's software.
If the self-test prints your test bar(s) clearly, the printer hardware is not at fault.
I assume you mean the pages are coming out dirty or gary versus white and black text.
change the drum/cartridge, if you get the same results it could be the hi-voltage power supply. most common is the drum.
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