Meaning of HP DeskJet F340 Printer Series Lights [Detailed Guide]

In this article, we will discuss the meaning of HP DeskJet F340 printer series lights in detail.

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Table of Contents

Turned Off Control Panel Lights – Meaning of HP DeskJet F340 Printer Series Lights

This happens when your printer is off and refuses to respond/turn on. To fix this problem, do the following solutions:

1. Ensure that your printer is Properly Plugged in – Meaning of HP DeskJet F340 Printer Series Lights

To ensure that your printer is properly plugged in, follow the steps below:

Step 1: Check the back of your printer and ensure that the power cable is properly plugged into your printer. If it isn’t, plug it in properly.

Step 2: Check and confirm that the power cable is properly plugged into the power supply. If it isn’t, plug it in properly.

Step 3: Check and confirm that the power cable is properly plugged into the electrical wall outlet. If it isn’t, plug it in properly.

Step 4: Turn on your HP printer by pressing its power button.

If it turns on, then the problem has been resolved. Therefore, you can stop troubleshooting.

However, it if fails to turn on, do the solution below.

2. Slowly Press the Power Button – Meaning of HP DeskJet F340 Printer Series Lights

In some cases, your printer won’t respond when the Power button is pressed too quickly, therefore, do the following steps:

Step 1: Slowly press the power button to turn on your HP printer.

Step 2: Check if the Power light on the control panel is blinking.

If the power light is blinking, and your printer responds and turns on, then the problem has been resolved. Therefore, you can stop troubleshooting.

However, it if fails to turn on, do the solution below.

3. Service your HP Printer – Meaning of HP DeskJet F340 Printer Series Lights

To service your HP printer, after trying the above solutions to no avail, contact HP Customer Support to fix an appointment. If you live in the Asia Pacific, you will be told to visit the nearest local service center.

If the printer cannot be repaired, you will be given a free replacement provided your printer is still under warranty. The repair fee is also free for printers under warranty.

Visit http://www.support.hp.com/checkwarranty to confirm your printer’s warranty status.

Blinking Power Light – Meaning of HP DeskJet F340 Printer Series Lights

When you see the power light blinking, you don’t have to worry as this is a normal printer operation. The power light of your printer will blink when it is processing a print job, copy job, scan job, or any maintenance task (e.g., alignment).

Do the following solutions to resolve this issue:

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1. Allow your printer to Complete the Task – Meaning of HP DeskJet F340 Printer Series Lights

Wait while the printer carries out the task.

If your printer is unable to complete the task, press down the Power button for 3 seconds. This action should turn off your printer.

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

2. Power Reset your printer – Meaning of HP DeskJet F340 Printer Series Lights

To power reset your printer, do the following steps:

Step 1: Remove the power cable from your printer.

Step 2: Wait for 15 seconds.

Step 3: Plug the power cable into your printer.

Step 4: Turn on your printer by pressing the Power button.

Step 5: Try to perform the task your printer was carrying out before it became unresponsive.

If the printer can complete the task, it means the issue is resolved. Therefore, you can stop troubleshooting.

However, if the issue persists, service your HP printer.

Power Light Turns on after Blinking Fast for 3 Seconds – Meaning of HP DeskJet F340 Printer Series Lights

An error condition where your printer’s Power light blinks fast for 3 seconds, and then turns on, occurs when your printer is performing another task.

To resolve this error condition, do the following solutions:

1. Allow your printer to Complete the Task – Meaning of HP DeskJet F340 Printer Series Lights

Wait while the printer carries out the task.

If your printer is unable to complete the task, press down the Power button for 3 seconds. This action should turn off your printer.

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

2. Power Reset your HP DeskJet F340 Printer Series – Meaning of HP DeskJet F340 Printer Series Lights

To power reset your printer, do the following tasks:

1. Power Reset the Printer – Meaning of HP DeskJet F340 Printer Series Lights

To power reset the printer, do the following steps:

Step 1: Turn on your printer by pressing the power button (if it is not turned on already).

Step 2: Remove the power cable from your printer.

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

Step 4: Wait for a minimum of 15 seconds.

Step 5: Plug the power cable into the outlet.

Step 6: Plug the power cable into your printer.

Step 7: If your printer fails to turn on automatically, turn it on manually by pressing the power button.

Do the next task.

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2. Print a Self-Test Report on HP DeskJet F340 Printer Series – Meaning of HP DeskJet F340 Printer Series Lights

To print out a self-test report, do the following steps:

Step 1: Press down the printer’s Cancel button.

Step 2: Press the printer’s Start Copy Color button.

Step 3: Let go of both buttons at once.

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

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, service your HP printer.

Power Light Turns on after Blinking Fast for 20 Seconds – Meaning of HP DeskJet F340 Printer Series Lights

An error condition where your printer’s Power light blinks fast for 20 seconds, and then turns on, occurs when you press the Scan button, and your computer refuses to respond.

To resolve this error condition, do the following solutions:

1. Ensure that your computer is on – Meaning of HP DeskJet F340 Printer Series Lights

To ensure that your computer is on, do the following tasks:

1. Turn on your computer – Meaning of HP DeskJet F340 Printer Series Lights

To turn on your computer, do the steps below:

Step 1: Press your computer’s power button.

Step 2: Allow your computer to boot.

Step 3: Press your printer’s Scan button again.

If the issue is resolved, stop troubleshooting.

If the issue persists, do the next task.

2. Ensure that your computer is Properly Plugged in – Meaning of HP DeskJet F340 Printer Series Lights

To ensure that your computer is properly plugged in, do the steps below:

Step 1: Ensure that the computer’s power cable is properly plugged into your computer.

Step 2: Ensure that the computer’s power cable is properly plugged into the power source (wall outlet, power strip, surge protector, etc.)

Step 3: If your computer is plugged into a power strip or surge protector, ensure that the power strip or surge protector is properly plugged into the wall outlet.

Step 4: Press your computer’s power button.

Step 5: Allow your computer to boot.

Step 6: Press your printer’s Scan button again.

If the issue is resolved, stop troubleshooting.

If the issue persists, do the next task.

HP 17.3

3. Plug your Computer Directly into an Electrical Wall Outlet – Meaning of HP DeskJet F340 Printer Series Lights

When power strips or surge protectors are used, the voltage supplied might not be adequate to power all your computer and printer functions. If this is the cause of the issue, connecting the power cable directly to an electrical wall outlet should fix the problem.

To plug your computer directly into an electrical wall outlet, do the following steps:

Step 1: Unplug your computer’s power cable from the surge protector or power strip it is plugged into.

Step 2: Plug the cable directly into an electrical wall outlet.

Step 3: Press your computer’s power button.

Step 4: Allow your computer to boot.

Step 5: Press your printer’s Scan button again.

If the issue is resolved, stop troubleshooting.

If the issue persists, do the solution below.

2. Check all the Connections between your Computer and Printer – Meaning of HP DeskJet F340 Printer Series Lights

To check all the connections between your computer and printer, do the following steps:

Step 1: Turn on your printer by pressing the Power button (if it is not already turned on).

Step 2: Ensure that the USB cable is properly plugged into your HP printer.

Step 3: Ensure that the USB cable is properly plugged into your computer.

Step 4: Press your printer’s Scan button again.

If the issue is resolved, stop troubleshooting.

If the issue persists, do the solution below.

3. Confirm and Ensure that the HP Software is Installed on your Computer – Meaning of HP DeskJet F340 Printer Series Lights

You can download and then install the HP software on your computer from the HP website. To do this, follow the steps below:

Step 1: Turn on your HP printer.

Step 2: If necessary, remove the USB cord from your printer.

If the cord is needed, you will get a prompt to reconnect the USB cable.

Step 3: Visit the HP Software and Driver Downloads page.

Step 4: When the “Let’s identify your product to get started” page is displayed, click on “Printer.”

Step 5: Type the model number of your HP printer.

Step 6: Click “Submit.”

Note: If you want to change your computer’s operating system, click on “Change,” choose the version you want, and then click on “Change.”

Step 7: Check under the heading “Driver,” and then click on “Download” if you want the full software package. You can also click on the “Basic Drivers” option if you want other installation driver options.

After reinstalling the software, check if the issue is resolved

If the issue is resolved, stop troubleshooting.

If the issue persists, service your HP printer.

Blinking Paper Light – Meaning of HP DeskJet F340 Printer Series Lights

When the paper light starts to blink, it might be a result of any of the following:

  • Empty paper tray.
  • Paper jam.
  • The paper in the tray does not match the paper size settings.

To resolve this error condition, do the solutions below in the given order.

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1. Load the Paper Tray with Paper – Meaning of HP DeskJet F340 Printer Series Lights

Check if the paper tray is empty. If it is, load it with paper by doing the following tasks:

1. Load Paper into the Tray – Meaning of HP DeskJet F340 Printer Series Lights

To load paper into the tray, do the following steps:

Step 1: Move the paper width guide to its furthermost position.

Step 2: Load a stack of new, plain A4 or U.S. letter paper into your printer’s paper tray.

Step 3: Ensure that the paper stack goes completely into the printer until it can’t go further.

Caution: Ensure that your printer is silent and idle when you are loading paper into the tray. If your printer is busy with a task while you load paper, the paper stop within the printer might have moved due to the current task the printer is performing. When that happens, you might end up pushing the paper too far into your printer. The result will be that your printer will push out blank pages when it is carrying out a print job.

Step 4: Move the paper width guide to rest against the paper.

Ensure that the guide doesn’t squeeze the paper stack.

Note: Don’t load the paper tray with excess paper. Always ensure that the paper stack is not higher than the upper part of the width guide and that the stack fits within the tray.

Do the next task.

2. Print a Self-test Page – Meaning of HP DeskJet F340 Printer Series Lights

To print a self-test page, follow the instructions we shared under the Print a Self-Test Report on HP DeskJet F340 Printer Seriessection of this article.

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, do the solution below.

2. Remove the Paper Jam – Meaning of HP DeskJet F340 Printer Series Lights

Do the following tasks to remove the paper jam from your printer:

1. Remove Loose Paper from your HP DeskJet F340 Printer Series – Meaning of HP DeskJet F340 Printer Series Lights

Check the printer’s input tray as well as the output tray for loose paper. If you find any, remove them from the tray.

Caution: Don’t attempt to take out the jammed paper at this point. Trying to do so might damage your printer’s print mechanism.

Do the next task.

2. Remove the Paper Jam from the Rear Area of your HP DeskJet F340 Printer Series – Meaning of HP DeskJet F340 Printer Series Lights

To remove the paper jam from the rear area of your printer, do the following steps:

Caution: Always try to pull out the jammed paper from the rear or tray area of your printer first instead of from the front area. Trying to pull out the jammed paper from the front area first before trying to do so from the rear or tray might lead to mechanical damage.

Step 1: Unplug the USB cord from your printer.

Step 2: Unplug the printer’s power cable from your printer.

Step 3: Check the left side of your printer’s rear access door for the release tab.

Step 4: Press the door release tab.

This action will release your printer’s rear access door.

Step 5: Pull the rear access door away from your printer.

Step 6: Gently pull the jammed paper from the printer with both hands to reduce the possibility of tearing them.

Step 7: Remove torn paper bits from your printer’s rollers.

Caution: In case the jammed paper tears, ensure that you check the wheels and rollers for the torn paper pieces within the device. If these pieces are left in the printer, they could cause paper jams in the future.

Step 8: Carefully push forward the printer’s rear access door to close it. Ensure that the door snaps shut.

Step 9: Plug the power cable into your printer.

Step 10: Plug the USB cord into your printer.

Step 11: Turn on your printer by pressing the Power button.

Step 12: Print out a self-test report.

To print a self-test page, follow the instructions we shared under the “Print a Self-Test Report on HP DeskJet F340 Printer Seriessection of this article.

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, check for paper jams in the next printer area.

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3. Remove the Paper Jam from the Front Area of your HP DeskJet F340 Printer Series – Meaning of HP DeskJet F340 Printer Series Lights

To remove the paper jam from the front area of your printer, do the following steps:

Step 1: Turn on your HP printer by pressing the Power button.

Step 2: Unplug the USB cord from your printer.

Step 3: Unplug the printer’s power cable from your printer.

Step 4: Open your printer’s cartridge access door.

Step 5: Carefully pull out the paper from the rollers.

Caution: In case the jammed paper tears, ensure that you check the wheels and rollers for the torn paper pieces within the device. If these pieces are left in the printer, they could cause paper jams in the future.

Step 6: Close your printer’s cartridge access door.

Step 7: Plug the power cable into your printer.

Step 8: Plug the USB cord into your printer.

Step 9: Turn on your printer by pressing the Power button.

Step 10: Check if the paper light on the control panel is still blinking.

Step 11: Print out a self-test report.

To print a self-test page, follow the instructions we shared under the Print a Self-Test Report on HP DeskJet F340 Printer Seriessection of this article.

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, do the next task.

4. Ensure that the Carriage is Moving Freely – Meaning of HP DeskJet F340 Printer Series Lights

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

Step 1: Turn on your printer by pressing the Power button.

Step 2: Open your printer’s carriage access door.

The carriage might move to your printer center area; this is fine.

Step 3: While your printer is still on, unplug the power cable from your printer.

Caution: You must unplug the power cable before attempting to move the printer parts to avoid injuries or electrical shock.

Step 4: Disconnect the power cable from the wall outlet or power source.

Step 5: Check the carriage path for foreign objects or paper that might be obstructing the carriage’s movement.

Note: If the inside area of the printer is dark, illuminate the area with a flashlight.

Step 6: Check and remove any foreign objects or paper you find.

Step 7: Place your hand inside the printer and move the carriage.

  • Move the carriage to the left if it is on the right.
  • Move the carriage to the right if it is on the left.
  • Move the carriage to the right if it is in the center.

Step 8: Ensure that the carriage can move freely from the left to the right.

Step 9: Close your printer’s cartridge access door.

Step 10: Reconnect the power cable to your printer.

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

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

Step 13: Print out a self-test report.

To print a self-test page, follow the instructions we shared under the Print a Self-Test Report on HP DeskJet F340 Printer Seriessection of this article.

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, do the next task.

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5. Clean the Paper Feed Rollers – Meaning of HP DeskJet F340 Printer Series Lights

When paper fiber, dust, debris, etc. gather on the paper feed rollers, it can lead to paper jams as well as paper feed issues. Therefore, it is necessary to clean the rollers when you notice these issues.

To clean the paper feed rollers, do the following steps:

Step 1: Get the following:

i. A clean, fluff-free cloth.

ii. Distilled, bottled, or filtered water.

Do not use tap water as the contaminants it might contain might damage your printer.

Step 2: Turn on your printer by pressing the Power button.

Step 3: Unplug the power cable from your printer.

Step 4: Check the left side of your printer’s rear access door for the release tab.

Step 5: Press the door release tab.

This action will release your printer’s rear access door.

Step 6: Pull the rear access door away from your printer.

Step 7: Dampen the fluff-free cloth lightly with distilled, bottled, or filtered water.

Step 8: Squeeze excess water from the cloth.

Step 9: Press the fabric against the rollers and apply a little pressure.

The pressure will ensure that dirt and dust buildup is removed.

Step 10: Use your fingers to rotate the rollers upwards.

Step 11: Carefully push forward the printer’s rear access door to close it. Ensure that the door snaps shut.

Step 12: Plug the power cable into your printer.  

Step 13: Turn on your printer by pressing the power button.

Step 14: Print out a self-test report.

To print a self-test page, follow the instructions we shared under the Print a Self-Test Report on HP DeskJet F340 Printer Seriessection of this article.

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, do the next task.

6. Reset your HP Printer – Meaning of HP DeskJet F340 Printer Series Lights

To reset your printer, do the following steps:

Step 1: Turn on your HP printer by pressing the Power button.

Step 2: While the printer is on, remove the power cable from your printer.

Step 3: Disconnect the power cable from the wall outlet or power source.

Step 4: Wait for a minimum of 15 seconds.

Step 5: Reconnect the power cable to a wall outlet.

Note: HP recommends that you connect your printer directly to a wall outlet rather than a power strip or surge protector.

Step 6: Plug the power cable into your HP printer.

Step 7: If your printer fails to turn on automatically, turn it on manually by pressing the Power button.

Step 8: Print out a self-test report.

To print a self-test page, follow the instructions we shared under the Print a Self-Test Report on HP DeskJet F340 Printer Seriessection of this article.

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, do the solution below.

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3. Modify the Print Driver Settings – Meaning of HP DeskJet F340 Printer Series Lights

As we said, when the paper in the tray does not match the settings in the print driver, the paper light might start blinking. Therefore, you need to confirm and modify (if need be) the print driver settings to fit the paper in the tray.

To modify the print driver settings, do the following tasks:

1. Modify the Settings – Meaning of HP DeskJet F340 Printer Series Lights

Use any of the methods below to modify the settings.

Choose an Existing Paper Size – Method 1

To choose an existing paper size, do the following steps:

Step 1: Open the program you want to print from.

Step 2: Click “File.”

Step 3: Click “Print.”

This action will open the Print window.

Step 4: Choose your HP printer from the Name drop-down list if it is not selected.

Step 5: Check the top-right corner and click “Preferences” or “Properties.”

This action will open the Printing Preferences or Properties window.

 Step 6: Click on the tab labeled “Features.”

Step 7: Click “More” from the Size drop-down list.

More size options will be displayed as the Size window opens.

Step 8: Select the correct paper size from the “Size is” list.

Step 9: Click “OK” to confirm the settings change.

Use a New Custom Paper Size – Method 2

To use a new custom paper size, do the following steps:

Step 1: Open the program you want to print from.

Step 2: Click “File.”

Step 3: Click “Print.”

This action will open the Print window.

Step 4: Choose your HP printer from the Name drop-down list if it is not selected.

Step 5: Check the top-right corner and click “Preferences” or “Properties.”

This action will open the Printing Preferences or Properties window.

 Step 6: Click on the tab labeled “Features.”

Step 7: Click “Custom” from the Size drop-down list.

This action will open the Custom Paper Size window.

Step 8: Click the Name box.

Step 9: Type a name for the new paper size you are creating.

You can choose to type the size of the paper you are using to make it easy to remember. However, ensure that you don’t type a name that is the same as any of the existing paper sizes.

Note: If you don’t type a name, the Save button will be unavailable, and you will not be able to save your custom setting.

Step 10: Go to the area described as “Paper Size,” and then type the size of the paper in the boxes for width and length.

Step 11: Choose the correct unit measure from the Units area.

Step 12: Click “Save.”

Note: If the Save button is unavailable, it means you didn’t enter a name for the paper size as we instructed earlier.

Step 13: Click on “OK” to confirm your settings.

This action will close the Custom Paper Size window.

Step 14: Click on the tab labeled “Features” from the Size drop-down list.

Step 15: Click “More.”

This action will open the “Size is” window.

Step 16: From the “Size is” list, go to “Custom.”

Step 17: Choose the new custom size you just created.

Step 18: Click “OK” to confirm your settings.

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2. Print a Self-test Page – Meaning of HP DeskJet F340 Printer Series Lights

To print a self-test page, follow the instructions we shared under the Print a Self-Test Report on HP DeskJet F340 Printer Seriessection of this article.

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, service your HP printer.

We recommend that you read this article: What Does This Mean On An HP Printer? [Detailed Guide] to learn more about other things you might not know about your HP printer.

Blinking Print Cartridge Light – Meaning of HP DeskJet F340 Printer Series Lights

The blinking print cartridge light that is sometimes accompanied by the letter “E” being displayed in the Copies area is an indication of an error condition caused by any of the following:

i. An open cartridge access door.

ii. Incorrectly installed cartridge.

iii. Protective tape on the cartridge was not removed.

iv. Low ink or defective cartridge.

To resolve this problem, do the solutions below in the given order:

1. Properly Close your Printer’s Cartridge Access Door – Meaning of HP DeskJet F340 Printer Series Lights

To properly close your printer’s cartridge access door, do the following tasks:

1. Close your Printer’s Cartridge Access Door – Meaning of HP DeskJet F340 Printer Series Lights

To close your printer’s cartridge access door, do the following steps:

Step 1: Open your printer’s cartridge access door.

This action will cause the carriage to move to your printer’s center area.

Step 2: Check inside your printer for obstructions such as foreign objects or paper that are stopping the door from closing properly.

Step 3: Take out the obstructions you might find.

Step 4: Close your printer’s cartridge access door and ensure that is it completely closed.

Do the next task.

2. Print a Self-test Page – Meaning of HP DeskJet F340 Printer Series Lights

To print a self-test page, follow the instructions we shared under the Print a Self-Test Report on HP DeskJet F340 Printer Seriessection of this article.

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, do the solution below.

2. Ensure that there are Cartridges Installed in the Printer – Meaning of HP DeskJet F340 Printer Series Lights

To ensure that there are cartridges installed in the printer, do the following tasks:

1. Check the Printer’s Carriage – Meaning of HP DeskJet F340 Printer Series Lights

To check the printer’s carriage for cartridges, do the following steps:

Step 1: Open your printer’s cartridge access door.

This action will cause the carriage to move to your printer’s center area.

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

Step 3: Check the carriage cartridge slots, and confirm that there are cartridges installed.

If the printer has installed cartridges, skip to solution 3: Take Out and then Reinstall the Ink Cartridges.”

If the printer does not have installed cartridges, do the next task.

HP 21 | 2 Ink Cartridges | Black | C9351AN

2. Install the Ink Cartridges – Meaning of HP DeskJet F340 Printer Series Lights

To install the ink cartridges, follow the steps below:

Step 1: Move the paper width guide to its furthermost position.

Step 2: Load a stack of new, plain A4 or U.S. letter paper into your printer’s paper tray.

Step 3: Ensure that the paper stack goes completely into the printer until it can’t go further.

Note: Don’t load the paper tray with excess paper. Always ensure that the paper stack is not higher than the upper part of the width guide and that the stack fits within the tray.

Step 4: Move the paper width guide to rest against the paper.

Ensure that the guide doesn’t squeeze the paper stack.

Step 5: Take out the new ink cartridge from the packaging.

Step 6: Pull the pink tab to remove it from the front of the nozzles.

Caution: Don’t touch the cartridge nozzles or contacts.

Step 7: Grasp the sides of the cartridge.

Step 8: Slide the ink cartridge at a somewhat upward angle into the appropriate slot.

  • The slot with the black parallelogram icon is for the black ink cartridge.
  • The slot with the magenta semicircle icon is for the color ink cartridge.

Step 9: Snap the cartridge into place by pressing it inward.

Step 10: Repeat the steps above for the other cartridge while installing it into the appropriate slot.

Step 11: Close your printer’s cartridge access door.

Step 12: Wait for your printer to print an alignment page.

Step 13: Once the alignment page is printed, take the page and place it on your printer’s scanner glass.

The print side of the page should face down with the page’s upper part to the left.

Step 14: Close the scanner lid.

Step 15: Press your printer’s Scan button.

This action will complete your printer alignment.

Step 16: Recycle or discard the page.

Check if the issue is resolved.

If the print cartridge light stops blinking, the issue is resolved; therefore, you can stop troubleshooting.

However, if the print cartridge light continues to blink, do the solution below.

3. Take out and then Reinstall the Ink Cartridges – Meaning of HP DeskJet F340 Printer Series Lights

To take out and then reinstall the ink cartridges, do the following tasks:

1. Remove the Ink Cartridges – Meaning of HP DeskJet F340 Printer Series Lights

To remove the ink cartridges, do the following steps:

Step 1: Turn on your HP printer by pressing the Power button.

Step 2: Open your printer’s cartridge access door.

This action will cause the carriage to move to your printer’s center area.

Step 3: Wait for the carriage to become silent and idle.

Step 4: Release the cartridge from its slot by lightly pressing down on it.

Step 5: Pull out the ink cartridge from its slot.

Note: The left slot is for the tri-color cartridge, while the right slot is for the photo or black cartridge.

Step 6: Check if the cartridge still has the protective tape on its nozzle.

If the tape is absent, skip to the next task.

If the tape is present on the nozzles, remove it by pulling the pink tab.

Caution: Don’t touch the ink nozzles or the contacts on the cartridge. Doing so might lead to poor electrical connections, ink failure, and clogs.

Step 7: After pulling out the first cartridge, pull out the second one using the steps above.

Do the next task.

HP 21 | 2 Ink Cartridges | Black, Tri-color | C9351AN, C9352AN

2. Reinstall the Ink Cartridges – Meaning of HP DeskJet F340 Printer Series Lights

To reinstall the ink cartridges, do the following steps:

Step 1: Grasp the sides of the cartridge.

Step 2: Slide the ink cartridge at a somewhat upward angle into the appropriate slot.

  • The slot with the black parallelogram icon is for the black ink cartridge.
  • The slot with the magenta semicircle icon is for the color ink cartridge.

Step 3: Snap the cartridge into place by pressing it inward.

Step 4: Repeat the steps above for the other cartridge while installing it into the appropriate slot.

Step 5: Close your printer’s cartridge access door.

Do the next task.

3. Print a Self-test Page – Meaning of HP DeskJet F340 Printer Series Lights

To print a self-test page, follow the instructions we shared under the Print a Self-Test Report on HP DeskJet F340 Printer Seriessection of this article.

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, do the solution below.

4. Replace the Faulty Cartridge – Meaning of HP DeskJet F340 Printer Series Lights

To replace the faulty cartridge, do the following tasks:

1. Remove the Ink Cartridge – Meaning of HP DeskJet F340 Printer Series Lights

To remove the ink cartridge, do the following steps:

Step 1: Turn on your HP printer by pressing the Power button.

Step 2: Open your printer’s cartridge access door.

This action will cause the carriage to move to your printer’s center area.

Step 3: Wait for the carriage to become silent and idle.

Step 4: Release the cartridge from its slot by lightly pressing down on it.

Step 5: Pull out the ink cartridge from its slot.

Note: The left slot is for the tri-color cartridge, while the right slot is for the photo or black cartridge.

2. Determine which Cartridge is Faulty – Meaning of HP DeskJet F340 Printer Series Lights

To determine which cartridge is faulty, follow the steps below:

Step 1: Close your printer’s cartridge access door.

Step 2: Check the printer’s Power light.

  • If the light is blinking, reinstall the black ink cartridge. After that, replace the tri-color ink cartridge.
  • If the light is not blinking, don’t reinstall the black ink cartridge. Instead, get a replacement black ink cartridge for your printer.

Do the next task.

3. Install the Replacement Cartridge – Meaning of HP DeskJet F340 Printer Series Lights

To install the replacement cartridge, follow the steps we shared under the Install the Ink Cartridgessection of this article.

After installing the replacement cartridge, check if the issue is resolved.

If the issue is resolved, you can stop troubleshooting.

If the issue persists, service your HP printer.

Blinking Print Cartridge and Paper Lights – Meaning of HP DeskJet F340 Printer Series Lights

The error condition whereby the print cartridge and paper lights start blinking can be caused by any of the following:

i. Paper jam.

ii. The control panel overlay is incorrectly attached or is not even attached.

iii. Inadequate power supply.

To resolve this error condition, do the solutions below in the given order.

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1. Correctly Install the Control Panel Overlay – Meaning of HP DeskJet F340 Printer Series Lights

If the printer’s control panel bezel or overlay is not installed correctly, it might lead to the error condition under discussion.

If you are setting up the printer for the first time, do the tasks provided below to install the control panel overlay.

Caution: If you have set up your printer already and it has been in use for a while, don’t reinstall the control panel overlay. Instead, firmly press down the overlay to allow it to attach correctly. Or, you can jump to task 2.

1. Attach your Printer’s Control Panel Overlay – Meaning of HP DeskJet F340 Printer Series Lights

To attach your printer’s control panel overlay, do the following steps:

Step 1: Turn off your printer by pressing the Power button.

Step 2: Get the front panel cover.

Step 3: Remove the paper backing by peeling it off to reveal the adhesive.

Step 4: Lift your printer’s scanner lid.

Step 5: Carefully place the overlay over your printer’s control panel. Ensure that they line up evenly.

Step 6: Press down the overlay firmly onto your printer.

Step 7: Turn on your printer by pressing the Power button.

Do the next task.

2. Print a Self-test Page – Meaning of HP DeskJet F340 Printer Series Lights

To print a self-test page, follow the instructions we shared under the Print a Self-Test Report on HP DeskJet F340 Printer Seriessection of this article.

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, do the solution below.

2. Plug your Printer Directly into an Electrical Wall Outlet – Meaning of HP DeskJet F340 Printer Series Lights

If your printer is plugged into a surge suppressor or power strip, such power sources might not supply the adequate voltage required by your printer. Therefore, you need to plug your printer directly into an electrical wall outlet.

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

Step 1: Ensure that the power cables of your printer and computer have three-prong plugs.

Step 2: Remove the printer’s power cable from your HP printer.

Step 3: Remove the printer’s power cable from its connected power source (surge protectors, power strips, etc.)

Step 4: Connect the printer’s power cable directly to a wall outlet.

Step 5: Plug the power cable into your HP printer.

Step 6: Turn on your HP printer.

Step 7: Perform the task again.

If the issue is resolved, stop troubleshooting.

If the issue persists, do the solution below.

3. Remove Paper Jam from your Printer’s Rear Area – Meaning of HP DeskJet F340 Printer Series Lights

To remove the paper jam from your printer’s rear area, do the following tasks:

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1. Remove loose paper – Meaning of HP DeskJet F340 Printer Series Lights

To remove the loose paper, follow the instructions we shared under the “Remove Loose Paper from your HP DeskJet F340 Printer Seriessection of this article.

After removing the loose paper, do the next task.

2. Remove Jammed Paper from your Printer’s Rear Area – Meaning of HP DeskJet F340 Printer Series Lights

To remove jammed paper from your printer’s rear area, follow the instructions we shared under the Remove the Paper Jam from the Rear Area of your HP DeskJet F340 Printer Seriessection of this article.

After printing the test page and the issue persists, do the solution below.

4. Remove Paper Jam from your Printer’s Front Area – Meaning of HP DeskJet F340 Printer Series Lights

To remove the paper jam from your printer’s front area, do the following tasks:

1. Remove the Paper Jam – Meaning of HP DeskJet F340 Printer Series Lights

To remove the paper jam, follow the steps below:

Step 1: Turn on your HP printer by pressing the Power button.

Step 2: Unplug the USB cord from your printer.

Step 3: Unplug the printer’s power cable from your printer.

Step 4: Open your printer’s cartridge access door.

Step 5: Carefully pull out the paper from the rollers.

Caution: In case the jammed paper tears, ensure that you check the wheels and rollers for the torn paper pieces in the device. If these pieces are left in the printer, they could cause paper jams in the future.

Step 6: Close your printer’s cartridge access door.

Step 7: Plug the power cable into your printer.

Step 8: Plug the USB cord into your printer.

Step 9: Turn on your printer by pressing the Power button.

After removing the paper jam, do the next task.

2. Ensure that the Carriage is Moving Freely – Meaning of HP DeskJet F340 Printer Series Lights

To ensure that the carriage is moving freely, follow the steps we shared under the Ensure that the Carriage is Moving Freelysection of this article.

If the issue is still unresolved, do the solution below.

5. Remove and then Reinstall the Ink Cartridges – Meaning of HP DeskJet F340 Printer Series Lights

To remove and then reinstall the ink cartridges, follow the instructions we shared under the Take out and then Reinstall the Ink Cartridgessection of this article.

If the issue persists after removing and then reinstalling the ink cartridges, do the solution below.

6. Clean the Paper Feed Rollers – Meaning of HP DeskJet F340 Printer Series Lights

To clean the paper feed rollers, follow the instructions we shared under the Clean the Paper Feed Rollers section of this article.

If the issue persists after cleaning the paper feed rollers, do the solution below.

7. Reset your HP DeskJet F340 Printer Series – Meaning of HP DeskJet F340 Printer Series Lights

Do the tasks below to reset your HP printer:

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1. Perform a Partial Reset on your printer – Meaning of HP DeskJet F340 Printer Series Lights

To perform a partial reset on your printer, do the steps below:

Step 1: Turn off your printer by pressing the Power button.

Step 2: Unplug the power cable from your printer.

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

Step 4: Wait for a minimum of 15 seconds.

Step 5: Plug the power cable into the electrical wall outlet.

Step 6: Plug the power cable into your printer.

Step 7: If your printer fails to turn on automatically, turn it on manually by pressing the Power button.

Do the next task.

2. Print a Self-test Page – Meaning of HP DeskJet F340 Printer Series Lights

To print a self-test page, follow the instructions we shared under the Print a Self-Test Report on HP DeskJet F340 Printer Seriessection of this article.

If the test page prints and the issue is resolved, stop troubleshooting.

If the issue persists, service your HP printer.

Blinking Print Cartridge, Paper Light, and Power Lights – Meaning of HP DeskJet F340 Printer Series Lights

When these lights begin to blink, it is an indication that your printer has encountered a fatal error.

To fix this error, do the following solutions:

1. Reset your HP Printer – Meaning of HP DeskJet F340 Printer Series Lights

To reset your printer, follow the instructions we shared under the Reset your HP DeskJet F340 Printer Seriessection of this article.

If the reset fails, do the solution below.

2. Service your HP Printer – Meaning of HP DeskJet F340 Printer Series Lights

To service your HP printer, contact HP Customer Support for further assistance.

Blinking Control Panel Lights – Meaning of HP DeskJet F340 Printer Series Lights

When all the lights on the control panel are blinking, it means that your printer has encountered a fatal error.

To fix this error, do the following solutions:

1. Reset your HP Printer – Meaning of HP DeskJet F340 Printer Series Lights

To reset your printer, follow the instructions we shared under the Reset your HP DeskJet F340 Printer Seriessection of this article.

If the reset fails, do the solution below.

2. Service your HP Printer

To service your HP printer, contact HP Customer Support for further assistance.