HP DeskJet 900 Printer Series Warning Lights [How to Fix]

In this article, we will discuss the meaning of different HP DeskJet 900 printer series warning lights and how to clear the warning lights.

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Table of Contents

Turned-off Control Panel Lights – HP DeskJet 900 Printer Series Warning Lights

When all the lights on your printer’s control panel are turned off, it means that your printer is off.

To fix this problem, do the following solutions:

1. Turn on your HP Printer – HP DeskJet 900 Printer Series Warning Lights

To turn on your HP printer, press your printer’s power button.

If your printer fails to turn on, do the solution below.

2. Ensure that your printer is Properly Plugged in – HP DeskJet 900 Printer Series Warning Lights

To ensure that your printer is properly plugged in, do the following steps:

Step 1: Check and confirm that the power cable from the power adapter is properly connected to the rear of your printer.

Step 2: Check and confirm that the power cable is properly connected to the power adapter.

Step 3: Check and confirm that the power cable is properly plugged into the wall outlet.

Step 4: Press your printer’s power button to turn on your printer.

Step 5: If the printer refuses to turn on, repeat the above steps but use another wall outlet.

If the steps above fix the problem, stop troubleshooting.

However, if the steps above fail to fix the problem, do the solution below.

3. Service your HP Printer – HP DeskJet 900 Printer Series Warning Lights

If the above solutions do not fix the problem, then you need to service your HP printer.

You can either contact HP Customer Support to fix a repair date for the printer if your device is still under warranty: The repair is free for such printers. Furthermore, you will get a free replacement if the printer cannot be repaired.

You can still contact HP if your printer is no longer under warranty, but you will pay for the repair. However, contacting a local and reliable technician will be ideal.

Turned-on Power Light – HP DeskJet 900 Printer Series Warning Lights

This is an indication that your printer is in the ready state to receive and process data. In this situation, you don’t have to do anything since this is a normal condition.

Blinking Power Light – HP DeskJet 900 Printer Series Warning Lights

This could occur when the printer is printing a print job, or there is an issue with the printer software.

To resolve this condition, do the following solutions:

1. Allow the Printer to Complete the Print Job – HP DeskJet 900 Printer Series Warning Lights

If your printer is trying to complete a print job, you need to allow it to complete the print job.

If your printer is not printing, do the solution below.

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2. Turn off and then Turn on your printer – HP DeskJet 900 Printer Series Warning Lights

To turn off and then turn on your printer, do the following steps:

Step 1: Turn off your printer by pressing your printer’s power button.

Step 2: If your printer fails to turn off, remove the power cable from the wall outlet.

Step 3: Plug the power cable into the wall outlet.

Step 4: Turn on your printer by pressing your printer’s power button.

Step 5: Print a document.

If the printer fails to print, then you need to contact HP Customer Support for further assistance.

Turned-on Power and Resume Lights – HP DeskJet 900 Printer Series Warning Lights

When you see this HP printer warning light pattern, it might be that your printer’s rear access door is unlocked or missing. It might also be that your printer’s duplexer is unlocked or missing.

To fix this problem, you need to reattach either the printer’s rear access door or the printer’s duplexer.

How to Remove and then Reattach the Rear Access Door on HP DeskJet 900 Printer Series – HP DeskJet 900 Printer Series Warning Lights

To remove and then reattach the rear access door on HP Deskjet 900 printer series, do the following steps:

Step 1: Release the rear access door by turning the knob on the door in a counter-clockwise manner.

Step 2: Remove the rear access door by pulling it towards you.

Step 3: Reattach the door to your printer.

Step 4: Lock the rear access door in its place by turning the knob on the door in a clockwise manner.

How to Remove and then Reattach the Duplexer on HP DeskJet 900 Printer Series – HP DeskJet 900 Printer Series Warning Lights

To remove and then reattach the duplexer on HP Deskjet 900 printer series, do the following steps:

Step 1: Release the duplexer by pressing the buttons on the sides of the duplexer.

Step 2: Take away the duplexer from your printer.

Step 3: Reattach the duplexer to your printer.

Step 4: Secure the duplexer to your printer by pressing the button on the sides, and then carefully push the duplexer into its original position.

Ensure that it clicks into place.

Step 5: If the HP printer warning lights are still turned-on, repeat the above steps.

If the issue persists, then you need to service your HP printer.

Turned-on Power Light and Blinking Resume Light – HP DeskJet 900 Printer Series Warning Lights

This situation could be a result of any of the following:

i. There is no paper in the printer.

ii. The printer’s cover is open.

iii. There is an obstruction preventing the carriage from moving.

iv. Paper Jam.

When the power light is on, and the resume light starts to blink, an error message will also be displayed. The displayed message will provide you with detailed information regarding the cause of the issue.

Below are the displayed messages that you might find in addition to the HP printer warning light pattern under discussion and how to fix them.

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1. “Door Open” – HP DeskJet 900 Printer Series Warning Lights

This is an indication that the printer’s cover is open. To fix this, do the following steps:

Step 1: Close the cover if it is open.

Step 2: Resume printing by pressing your printer’s “Resume” button.

2. “Out of Paper” – HP DeskJet 900 Printer Series Warning Lights

This is an indication that your printer is out of paper. To fix this, reload your printer with paper.

How to Load Paper into HP DeskJet 900 Printer Series – HP DeskJet 900 Printer Series Warning Lights

To load paper into HP DeskJet 900 printer series, do the following steps:

Step 1: Slide the paper stack into your printer’s input paper tray.

Step 2: Align the paper stack against the tray’s paper guide.

Step 3: Move the paper tray width guides to rest against the sides of the paper stack.

Step 4: Resume printing by pressing your printer’s “Resume” button.

3. “Paper Jam” – HP DeskJet 900 Printer Series Warning Lights

This is an indication that there is a paper jam in your printer. To fix this, do the following solutions.

1. Clear Jammed Paper on HP DeskJet 900 Printer Series – HP DeskJet 900 Printer Series Warning Lights

To clear the jammed paper, do the following tasks in the given order.

1. Check and Remove Loose Paper from the Input Tray of the HP DeskJet 900 Printer Series

Check the input paper tray for loose paper sheets. If you find any, remove them by taking them out of the tray.

Caution: Don’t try to remove the jammed paper now as doing that might damage your printer.

After removing the loose paper sheets, do the next task.

2. Clear the Jammed Paper from the Rear Area of the HP DeskJet 900 Printer Series

Depending on your printer model, your printer is designed with a rear access door or a duplexer. Follow the instructions below that applies to the type of design your printer has.

How to Clear Jammed Paper from Rear Area by removing the Rear Access Door – Method 1

To clear jammed paper from the rear area by removing the rear access door, do the following steps:

Step 1: Turn off your printer by pressing its power button.

Step 2: Remove the power cable from your printer.

Step 3: Release the rear access door by turning the knob on the door in a counter-clockwise manner.

Step 4: Remove the rear access door by pulling it towards you.

Step 5: Carefully pull out the jammed paper (if any) from the rear area of your printer.

Step 6: Reattach the door to your printer.

Step 7: Lock the rear access door in its place by turning the knob on the door in a clockwise manner.

How to Clear Jammed Paper from Rear Area by removing the Duplexer – Method 1

To clear jammed paper from the rear area by removing the duplexer, do the following steps:

Step 1: Turn off your printer by pressing its power button.

Step 2: Remove the power cable from your printer.

Step 3: Release the duplexer by pressing the buttons on the sides of the duplexer.

Step 4: Take away the duplexer from your printer by pulling it towards you.

Step 5: Carefully pull out the jammed paper (if any) from the rear area of your printer.

Step 6: Reattach the duplexer to your printer.

Step 7: Push the duplexer into its original position and ensure that it clicks into place. (However, don’t secure it in place by pressing the side buttons.

Step 8: Press and locate the button on top of your printer’s duplexer.

Step 9: Open your printer’s duplexer door.

Step 10: Carefully pull out the jammed paper from within the duplexer.

Step 11: Close your printer’s duplexer door.

Step 12: Press the buttons on the sides of the duplexer to secure it in place.

Check if the light situation has gone back to normal and the error message is removed.

If the light pattern and the message are still displayed, do the next task.

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3. Clear the Jammed Paper from the Front Area of the HP DeskJet 900 Printer Series

To clear the jammed paper from your printer’s front area, do the following steps:

Step 1: Remove the power cable from your printer if it is still plugged in.

Step 2: Open your printer’s cover.

Step 3: Carefully pull out the jammed paper from your printer’s front area.

Step 4: Close your printer’s cover.

Check if the light situation has gone back to normal and the error message is removed.

If the light pattern and the message are still displayed, do the next task.

4. Ensure that the Carriage is Moving Freely in HP DeskJet 900 Printer Series

To ensure that the carriage is moving freely, do the following steps:

Step 1: Turn on your printer by pressing its power button.

Step 2: Open your printer’s cover.

Step 3: If the carriage tries to move into your printer’s access area, allow it to do so.

Step 4: Remove the power cable from your printer.

Step 5: Remove the power cable from its connected power source or wall outlet.

Warning: Ensure that you remove the power cable from your HP printer to prevent electric shock or injuries before moving the carriage with your hand to reset the printer’s paper feed mechanism.

Step 6: Check for and remove foreign objects or paper that might be preventing the carriage from moving freely.

Caution: In case the paper gets torn when you try to pull it out from the rollers, inspect the rollers as well as the wheels for the torn paper pieces. Remove the pieces when you find them. This is important to prevent future jams.

Step 7: Slide the carriage within the printer with your hand.

  • If the carriage is on the right, slide it to the left.
  • If the carriage is on the left, slide it to the right.
  • If the carriage is in the middle, slide it to the right.

Step 8: Remove obstructions or loose paper you might find within the carriage path.

Step 9: Gently slide the carriage from one end of the carriage path to the other and back to confirm and ensure that it is moving freely.

Step 9: Close your printer’s cover.

Step 10: Plug the power cable into your printer.

Step 11: Plug the power cable into an electrical wall outlet.

Note: HP recommends that you connect your printer to a wall outlet instead of a surge protector or power strip.

Step 12: Turn on your printer by pressing its power button.

After doing the above steps, do the next task.

5. Print out a Self-Test Report on HP DeskJet 900 Printer Series

Printing a self-test report will confirm that your printer’s hardware is functioning correctly.

Use any of the options below to print this report. 

How to Print out a Self-Test Report on HP DeskJet 900 Printer Series via Control Panel – Option 1

To print out a self-test report on HP DeskJet 900 printer series via the control panel, do the following steps:

Step 1: Press down your printer’s power button.

Step 2: Press your printer’s “Resume” button four times.

Step 3: Let go of the printer’s power button.

This action will cause your printer to print a self-test report.

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How to Print out a Self-Test Report on HP DeskJet 900 Printer Series via HP Toolbox – Option 2

To print out a self-test report on HP DeskJet 900 printer series via the HP Toolbox, do the following steps:

Step 1: Open HP Toolbox on your Windows computer.

Windows XP

i. Click on “Start.”

ii. Click on “All Programs.”

iii. Click on “HP.”

iv. Click on your HP printer folder.

v. Click on your HP printer icon.

Windows Vista

i. Click the Windows icon on the taskbar.

ii. Click on “All Programs.”

iii. Click on “HP.”

iv. Click on your HP printer folder.

v. Click on your HP printer icon.

Note: The HP toolbox can also be opened by double-clicking on your HP printer’s icon if it is on the computer desktop.

Step 2: Click the tab labeled “Printer Services.”

Step 3: Click on “Print a Test Page.”

This action will cause your printer to print a self-test report.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue, do the next solution.

If your printer did not print the test page, do the next solution.

2. Clean Paper Rollers on HP DeskJet 900 Printer Series

When dust, debris, paper fiber, etc. gather on your printer’s paper feed rollers. it can lead to paper feed and paper jams issues. Therefore, to clean the rollers, do the tasks below in the given order.

1. Clean the Rollers

To clean the rollers, use any of the methods below.

How to Clean the Paper Feed Rollers by removing the Rear Access Door – Method 1

To clean the paper feed rollers by removing the rear access door, do the following steps:

Step 1: Turn off your printer by pressing its power button.

Step 2: Remove the power cable from your printer.

Step 3: Release the rear access door by turning the knob on the door in a counter-clockwise manner.

Step 4: Remove the rear access door by pulling it towards you.

Step 5: Get a fluff-free fabric and dampen it with bottled or distilled water.

Caution: Do not use tap water as it might contain impurities that are likely to damage your printer.

Step 6: Clean the paper rollers with the fabric while carefully rotating the feed rollers upward with your fingers to get them thoroughly cleaned.

Step 7: Wait for about 10 minutes for the rollers to get dry.

Step 8: Reattach the door to your printer.

Step 9: Lock the rear access door in its place by turning the knob on the door in a clockwise manner.

Step 10: Plug the power cable into your printer.

Step 11: Turn on your printer by pressing its power button if it fails to turn on automatically.

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How to Clean the Paper Feed Rollers by removing the Duplexer – Method 2

To clean the paper feed rollers by removing the duplexer, do the following steps:

Step 1: Turn off your printer by pressing its power button.

Step 2: Remove the power cable from your printer.

Step 3: Release the duplexer by pressing the buttons on the sides of the duplexer.

Step 4: Take away the duplexer from your printer by pulling it towards you.

Step 5: Get a fluff-free fabric and dampen it with bottled or distilled water.

Caution: Do not use tap water as it might contain impurities that are likely to damage your printer.

Step 6: Clean the paper rollers with the fabric while carefully rotating the feed rollers upward with your fingers to get them thoroughly cleaned.

Step 7: Wait for about 10 minutes for the rollers to get dry.

Step 8: Reattach the duplexer to your printer.

Step 9: Secure the duplexer to your printer by pressing the button on the sides, and then carefully push the duplexer into its original position.

Step 10: Plug the power cable into your printer.

Step 11: Turn on your printer by pressing its power button if it fails to turn on automatically.

After cleaning the paper feed rollers, print a Self-Test Report

To print a self-test report, follow the instructions we shared in the “Print out a Self-Test Report on HP DeskJet 900 Printer Series” subsection of this article.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue, do the next solution.

If your printer did not print the test page, do the next solution.

3. Power Reset HP DeskJet 900 Printer Series

To power reset HP DeskJet 900 printer series, do the following steps:

Step 1: Turn on your printer.

Step 2: Remove the power cable from your printer.

Step 3: Disconnect the power cable from the electrical wall outlet.

Step 5: Wait a minimum of 15 seconds.

Step 6: Reconnect the power cable to the electrical wall outlet.

Step 7: Plug the power cable into your printer.

Step 8: Turn on your printer.

You can read this article: How to Reset HP Printer [Detailed Guide] to learn about other resets that you can perform on your HP printer.

After the reset is complete, print a Self-Test Report

To print a self-test report, follow the instructions we shared in the “Print out a Self-Test Report on HP DeskJet 900 Printer Series” subsection of this article.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue or your printer did not print the test page, then you need to service your HP printer.

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3. “Print Carriage is Stuck” or “Carriage Jam” – HP DeskJet 900 Printer Series Warning Lights

This is an indication that the carriage is jammed or stalled. To fix this issue, do the following solutions.

1. Clear the Jammed Paper – HP DeskJet 900 Printer Series Warning Lights

To clear the jammed paper, do the following tasks in the given order.

1. Check and Remove Loose Paper from your Printer’s Input Tray

To check and remove the loose paper from your printer’s input tray, follow the steps we shared under the “Check and Remove Loose Paper from the Input Tray of HP DeskJet 900 Printer Series” subsection of this article.

After checking and removing loose paper from your printer’s input tray, do the next task.

2. Clear the Jammed Paper from your Printer’s Rear Area

To clear the jammed paper from your printer’s rear area, follow the steps we shared under the “Clear the Jammed Paper from the Rear Area of the HP DeskJet 900 Printer Series” subsection of this article.

After clearing the jammed paper from your printer’s rear area, do the next task.

3. Clear the Jammed Paper from your Printer’s Front Area

To clear the jammed paper from your printer’s front area, follow the steps we shared under the “Clear the Jammed Paper from the Front Area of the HP DeskJet 900 Printer Series” subsection of this article.

After clearing the jammed paper from your printer’s front area, do the next task.

4. Print a Self-Test Report

To print a self-test report, follow the instructions we shared in the “Print out a Self-Test Report on HP DeskJet 900 Printer Series” subsection of this article.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue, do the next solution.

If your printer did not print the test page, do the next solution.

2. Ensure that the Carriage is Moving Freely – HP DeskJet 900 Printer Series Warning Lights

To ensure that the carriage is moving freely, follow the steps we shared under the “Ensure that the Carriage is Moving Freely in HP DeskJet 900 Printer Series” subsection of this article.

After ensuring that the carriage is moving freely, print a self-test report page.

To print a self-test report, follow the instructions we shared in the “Print out a Self-Test Report on HP DeskJet 900 Printer Series” subsection of this article.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue, do the next solution.

If your printer did not print the test page, do the next solution.

3. Remove and then Reinsert the Cartridges from HP DeskJet 900 Printer Series – HP DeskJet 900 Printer Series Warning Lights

To remove and then reinsert the ink cartridges from HP DeskJet 900 printer series, do the following tasks:

1. Remove the Ink Cartridges

To remove the ink cartridges, do the following steps:

Step 1: Turn on your printer by pressing its power button.

Step 2: Open your printer’s cover.

Step 3: Open the latch of the ink cartridge.

Step 4: Remove the ink cartridge from your printer by sliding it out of the slot.

Step 5: Repeat steps 2 – 4 for the other ink cartridge.

Step 6: Check around and under the carriage for obstructions. If you find any, remove them.

Move on to the next task.

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2. Reinsert the Ink Cartridges

To reinsert the ink cartridges, do the following steps:

Step 1: Hold your ink cartridge upright (The HP logo will face up).

Step 2: Insert the ink cartridge into your printer by sliding it into the correct slot.

Step 3: Push it in and press down the cartridge to ensure that it is well-seated in its slot.

Step 4: Close the latch of the ink cartridge.

Step 5: Repeat the above steps for the other ink cartridge.

Step 6: Close your printer’s cover.

Move on to the next task.

3. Print out a Self-Test Report

To print a self-test report, follow the instructions we shared in the “Print out a Self-Test Report on HP DeskJet 900 Printer Series” subsection of this article.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue, do the next solution.

If your printer did not print the test page, do the next solution.

4. Plug your Printer Straight into a Wall Outlet – HP DeskJet 900 Printer Series Warning Lights

Follow the steps below to plug your HP printer directly into a wall outlet:

Step 1: Remove the printer’s power cable from your HP printer.

Step 2: Remove the printer’s power cable from its connected power source (surge protectors, power strips, etc.)

Step 3: Connect the printer’s power cable directly to a wall outlet.

Step 4: Plug the cable into your HP printer.

Step 5: Turn on your HP printer.

Note: If your printer works fine when plugged into an electric wall outlet, then it means the initial power source was not supplying enough voltage to your printer to enable it to function properly. This is why HP recommends that you plug your printer into a wall outlet directly rather than other power sources.

After plugging your printer directly into an outlet, print a self-test report.

To print a self-test report, follow the instructions we shared in the “Print out a Self-Test Report on HP DeskJet 900 Printer Series” subsection of this article.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue, do the next solution.

If your printer did not print the test page, do the next solution.

5. Power Reset your printer – HP DeskJet 900 Printer Series Warning Lights

To power reset your printer, follow the steps we shared under the “Power Reset HP DeskJet 900 Printer Series” subsection of this article.

After the reset is complete, print a Self-Test Report

To print a self-test report, follow the instructions we shared in the “Print out a Self-Test Report on HP DeskJet 900 Printer Series” subsection of this article.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue or your printer did not print the test page, then you need to service your HP printer.

We recommend that you read this article: HP Printer Warning [Detailed Guide] to learn about other HP printer warnings that you might encounter when using your HP printer.

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Alternate Blinking Power and Resume Lights – HP DeskJet 900 Printer Series Warning Lights

When you see the resume and the power light on your printer blinking alternately, it is an indication that the paper is refusing to feed which could be a result of a paper jam.

To fix this problem, do the solutions below.

1. Feed Paper into HP DeskJet 900 Printer Series – HP DeskJet 900 Printer Series Warning Lights

To feed paper into HP Deskjet 900 printer series, do the following steps:

Step 1: Feed the paper by pressing your printer’s “Resume” button.

Step 2: Resume the printing of your document or photo.

If the issue is resolved after doing the above steps, stop troubleshooting.

However, if the issue is not resolved, do the solution below.

2. Clear the Jammed Paper – HP DeskJet 900 Printer Series Warning Lights

To clear the jammed paper, follow the instructions in the “Clear Jammed Paper on HP DeskJet 900 Printer Series” subsection of this article.

If clearing the jammed paper doesn’t resolve the issue, do the solution below.

3. Clean your Printer’s Paper Feed Rollers – HP DeskJet 900 Printer Series Warning Lights

To clean your printer’s paper feed rollers, follow the instructions we shared under the “Clean Paper Rollers on HP DeskJet 900 Printer Series” subsection of this article.

If cleaning your printer’s paper feed rollers doesn’t resolve the issue, do the solution below.

4. Power Reset your HP Printer – HP DeskJet 900 Printer Series Warning Lights

To power reset your printer, follow the steps we shared under the “Power Reset HP DeskJet 900 Printer Series” subsection of this article.

After the reset is complete, print a Self-Test Report

To print a self-test report, follow the instructions we shared in the “Print out a Self-Test Report on HP DeskJet 900 Printer Series” subsection of this article.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue or your printer did not print the test page, then you need to service your HP printer.

Simultaneous Blinking Power and Resume Lights – HP DeskJet 900 Printer Series Warning Lights

When you see the resume and the power light on your printer blinking simultaneously, it is an indication that the carriage might be jammed.

To fix this problem, do the solutions below.

1. Clear the Jammed Paper – HP DeskJet 900 Printer Series Warning Lights

To clear the jammed paper, do the following tasks in the given order.

1. Check and Remove Loose Paper from your Printer’s Input Tray – HP DeskJet 900 Printer Series Warning Lights

To check and remove the loose paper from your printer’s input tray, follow the steps we shared under the “Check and Remove Loose Paper from the Input Tray of HP DeskJet 900 Printer Series” subsection of this article.

After checking and removing loose paper from your printer’s input tray, do the next task.

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2. Clear the Jammed Paper from your Printer’s Rear Area – HP DeskJet 900 Printer Series Warning Lights

To clear the jammed paper from your printer’s rear area, follow the steps we shared under the “Clear the Jammed Paper from the Rear Area of the HP DeskJet 900 Printer Series” subsection of this article.

After clearing the jammed paper from your printer’s rear area, do the next task.

3. Clear the Jammed Paper from your Printer’s Front Area – HP DeskJet 900 Printer Series Warning Lights

To clear the jammed paper from your printer’s front area, follow the steps we shared under the “Clear the Jammed Paper from the Front Area of the HP DeskJet 900 Printer Series” subsection of this article.

After clearing the jammed paper from your printer’s front area, do the next task.

4. Print a Self-Test Report – HP DeskJet 900 Printer Series Warning Lights

To print a self-test report, follow the instructions we shared in the “Print out a Self-Test Report on HP DeskJet 900 Printer Series” subsection of this article.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue, do the next solution.

If your printer did not print the test page, do the next solution.

2. Ensure that the Carriage is Moving Freely – HP DeskJet 900 Printer Series Warning Lights

To ensure that the carriage is moving freely, follow the steps we shared under the “Ensure that the Carriage is Moving Freely in HP DeskJet 900 Printer Series” subsection of this article.

After ensuring that the carriage is moving freely, print a self-test report page.

To print a self-test report, follow the instructions we shared in the “Print out a Self-Test Report on HP DeskJet 900 Printer Series” subsection of this article.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue, do the next solution.

If your printer did not print the test page, do the next solution.

3. Remove and then Reinsert the Ink Cartridges – HP DeskJet 900 Printer Series Warning Lights

To remove and then reinsert the ink cartridges, follow the instructions we shared under the “Remove and then Reinsert the Cartridges from HP DeskJet 900 Printer Series” subsection of this article.

If you still encounter the issue after following the instructions, do the next solution.

If your printer did not print the test page, do the next solution.

4. Plug your Printer Straight into a Wall Outlet – HP DeskJet 900 Printer Series Warning Lights

To plug your printer directly into a wall outlet, follow the instructions we shared under the “Plug your Printer Straight into a Wall Outlet” subsection of this article.

If you still encounter the issue after following the instructions, do the next solution.

If your printer did not print the test page, do the next solution.

5. Power Reset your HP Printer – HP DeskJet 900 Printer Series Warning Lights

To power reset your printer, follow the steps we shared under the “Power Reset HP DeskJet 900 Printer Series” subsection of this article.

After the reset is complete, print a Self-Test Report

To print a self-test report, follow the instructions we shared in the “Print out a Self-Test Report on HP DeskJet 900 Printer Series” subsection of this article.

If the issue is resolved, and your printer was able to print a test page, then you can stop troubleshooting.

If you still encounter the issue or your printer did not print the test page, then you need to service your HP printer.

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Turned-on Power and Cartridge Lights – HP DeskJet 900 Printer Series Warning Lights

When this happens, it means that your printer requires a reset. To reset your printer, follow the steps we shared under the “Power Reset HP DeskJet 900 Printer Series” subsection of this article.

Alternate Blinking Power, Resume, and Cartridge Lights – HP DeskJet 900 Printer Series Warning Lights

When this happens, it means that your printer requires a restart. To restart your printer, do these steps:

Step 1: Turn off your printer by pressing its power button.

Step 2: Turn on your printer by pressing its power button.

Blinking Power and Cartridge Lights – HP DeskJet 900 Printer Series Warning Lights

This is an indication that one or both of the installed cartridges has an issue. To resolve this problem, read the instructions below carefully.

When this issue occurs, there is a yellow arrow on your printer’s carriage that serves as an indicator pointing to one of the five icons representing different ink cartridge statuses. This arrow will help you to determine what is the exact problem.

To determine the exact problem, follow the steps below:

Step 1: Open your printer’s cover.

This action will cause the carriage within the printer to move to the access area.

Step 2: Wait for the carriage to become silent and idle before you continue.

Step 3: Find the yellow arrow on your printer’s carriage and look at the icon it is pointing at.

  • If the yellow arrow is pointing at the icon at the extreme left, then the issue is with the tri-color cartridge.
  • If the yellow arrow is pointing at the icon at the immediate left, then the issue is with the black cartridge.
  • If the yellow arrow is pointing at the middle icon, then the tri-color cartridge has low ink.
  • If the yellow arrow is pointing at the icon at the immediate right, then the black cartridge has low ink.
  • If the yellow arrow is pointing at the icon at the extreme right, then the cartridges are okay.

Note: We recommend that you consult your printer’s user manual to confirm that the icons are the same as the explanation above as the arrangement might vary slightly.

Once you’ve been able to determine the exact problem using the above steps, proceed to the section below that provides a solution to the problem.

Important: Before doing the solutions in the section below, ensure that you install compatible cartridges into your printer. Always purchase your supplies from reputable retailers or the HP Store.

1. Yellow Arrow is Pointing to the Icon that Indicates Tri-Color Cartridge Issue – HP DeskJet 900 Printer Series Warning Lights

This is an indication that the tri-color cartridge has an issue. To fix this issue, do the following solutions in the given order.

1. Remove and then Reinsert the Tri-Color Cartridge into HP DeskJet 900 Printer Series – HP DeskJet 900 Printer Series Warning Lights

To remove and then reinsert the tri-color cartridge, do the following tasks:

1. Remove the Tri-color Cartridge

To remove the tri-color cartridge, do the following steps:

Step 1: Turn on your printer by pressing its power button.

Step 2: Open your printer’s cover.

Step 3: Open the latch of the cartridge.

Step 4: Remove the tri-color cartridge from your printer by sliding it out of the left slot.

Move on to the next task.

Original HP 64 Black/Tri-color Ink Cartridges (2-pack) | Works with HP ENVY Inspire 7950e; ENVY Photo 6200, 7100, 7800; Tango Series | Eligible for Instant Ink | X4D92AN

2. Reinsert the Tri-color Cartridge

To reinsert the tri-color cartridge, do the following steps:

Step 1: Hold your tri-color cartridge upright (The HP logo will face up).

Step 2: Insert the tri-color cartridge into your printer by sliding it into the left slot.

Step 3: Push it in and press down the tri-color cartridge to ensure that it is well-seated in its slot.

Step 4: Close the latch of the cartridge.

Step 5: Close your printer’s cover.

Check if the problem is resolved.

If the problem is resolved, stop troubleshooting.

However, if the problem is unresolved, do the solution below.

2. Replace the Tri-Color Cartridge in HP DeskJet 900 Printer Series – HP DeskJet 900 Printer Series Warning Lights

To replace the tri-color cartridge, do the following tasks:

1. Replace the Tri-color Cartridge

To replace the tri-color cartridge, follow the steps below:

Step 1: Turn on your printer by pressing its power button.

Step 2: Open your printer’s cover.

Step 3: Wait for the carriage to move to the middle of your printer and then become silent and idle before you proceed.

Step 4: Open the latch of the cartridge.

Step 5: Remove the tri-color cartridge from your printer by sliding it out of the left slot.

Step 6: Take out the new tri-color cartridge from the package.

Step 7: Gently pull the protective tape from the new tri-color cartridge.

Caution: Ensure that you don’t touch the ink nozzles or copper contacts. If you touch these parts, it could lead to poor electrical connections, ink failure, and clogs.

Step 8: Hold the new tri-color cartridge upright (The HP logo will face up).

Step 9: Insert the new tri-color cartridge into your printer by sliding it into the left slot.

Step 10: Push it in and press down the tri-color cartridge to ensure that it is well-seated in its slot.

Step 11: Close the latch of the cartridge.

Step 12: Close your printer’s cover.

Move on to the next task.

2. Align your Installed Cartridges in HP DeskJet 900 Printer Series

To align your installed cartridges, choose the method below depending on your computer’s operating system.

Via Windows

To align the installed cartridges via Windows, do the following steps:

Step 1: Click on the search icon on the taskbar.

Step 2: Type “HP.”

Step 3: Click on the name of your HP printer from the search results.

This action will open the HP Printer Assistant.

Step 4: Click on “Maintain Your Printer.”

Step 5: Click on the tab labeled “Device Services.”

Step 6: Click on “Align Cartridges.”

An alignment page will be printed and an alignment window will open.

Step 7: Follow the instructions on the screen to complete the printhead alignment.

Step 8: Click on “Done.”

Step 9: Discard or recycle the printed alignment page.

Via Mac

Step 1: Search for “Print.”

Step 2: From the search results, click on “Printers & Scanners.”

Step 3: Click on the name of your HP printer.

Step 4: Click on “Open Print Queue.”

Step 5: Click on “Settings” or “Printer Setup.”

Step 6: Click on “Utility.”

Step 7: Click on “Open Printer Utility.”

Step 8: Click on “Align.”

An alignment page will be printed and an alignment window will open.

Step 9: Follow the instructions on the screen to complete the printhead alignment.

Sep 10: Click on “Done.”

Step 11: Discard or recycle the printed alignment page.

2022 Apple MacBook Air M2, 24GB RAM, 256GB Storage - Space Gray (Z15S000CU)

2. Yellow Arrow is Pointing to the Icon that Indicates Black Cartridge Issue – HP DeskJet 900 Printer Series Warning Lights

This is an indication that the black cartridge has an issue. To fix this issue, do the following solutions in the given order.

1. Remove and then Reinsert the Black Cartridge – HP DeskJet 900 Printer Series Warning Lights

To remove and then reinsert the black cartridge, do the following tasks:

1. Remove the Black Cartridge

To remove the black cartridge, do the following steps:

Step 1: Turn on your printer by pressing its power button.

Step 2: Open your printer’s cover.

Step 3: Open the latch of the cartridge.

Step 4: Remove the black cartridge from your printer by sliding it out of the right slot.

Move on to the next task.

2. Reinsert the Black Cartridge

To reinsert the black cartridge, do the following steps:

Step 1: Hold your black cartridge upright (The HP logo will face up).

Step 2: Insert the black cartridge into your printer by sliding it into the right slot.

Step 3: Push it in and press down the black cartridge to ensure that it is well-seated in its slot.

Step 4: Close the latch of the cartridge.

Step 5: Close your printer’s cover.

Check if the problem is resolved.

If the problem is resolved, stop troubleshooting.

However, if the problem is unresolved, do the solution below.

2. Replace the Black Cartridge in HP DeskJet 900 Printer Series – HP DeskJet 900 Printer Series Warning Lights

To replace the black cartridge, do the following tasks:

1. Replace the Black Cartridge

To replace the black cartridge, follow the steps below:

Step 1: Turn on your printer by pressing its power button.

Step 2: Open your printer’s cover.

Step 3: Wait for the carriage to move to the middle of your printer and then become silent and idle before you proceed.

Step 4: Open the latch of the cartridge.

Step 5: Remove the black cartridge from your printer by sliding it out of the right slot.

Step 6: Take out the new black cartridge from the package.

Step 7: Gently pull the protective tape from the new black cartridge.

Caution: Ensure that you don’t touch the ink nozzles or copper contacts. If you touch these parts, it could lead to poor electrical connections, ink failure, and clogs.

Step 8: Hold the new black cartridge upright (The HP logo will face up).

Step 9: Insert the new black cartridge into your printer by sliding it into the right slot.

Step 10: Push it in and press down the black cartridge to ensure that it is well-seated in its slot.

Step 11: Close the latch of the cartridge.

Step 12: Close your printer’s cover.

Move on to the next task.

Original HP 64XL Black High-yield Ink Cartridge | Works with HP ENVY Inspire 7950e; ENVY Photo 6200, 7100, 7800; Tango Series | Eligible for Instant Ink | N9J92AN

2. Align your Installed Cartridges

To align your installed cartridges, follow the instructions we shared under the “Align your Installed Cartridges in HP DeskJet 900 Printer Series” subsection of this article.

3. Yellow Arrow is Pointing to the Icon that Indicates Low Ink in the Tri-color Cartridge – HP DeskJet 900 Printer Series Warning Lights

This is an indication that the tri-color cartridge has low ink. To fix this issue, you need to replace the tri-color cartridge.

To replace the tri-color cartridge, follow the instructions we shared under the “Replace the Tri-Color Cartridge in HP DeskJet 900 Printer Series” subsection

4. Yellow Arrow is Pointing to the Icon that Indicates Low Ink in the Black Cartridge – HP DeskJet 900 Printer Series Warning Lights

This is an indication that the tri-color cartridge has low ink. To fix this issue, you need to replace the tri-color cartridge.

To replace the tri-color cartridge, follow the instructions we shared under the “Replace the Black Cartridge in HP DeskJet 900 Printer Series” subsection