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HP Deskjet 3840 Printer Series - Blinking Power Light

Blinking Power light

The Power light (

) on the front of the product can be on, off, or blinking (flashing), depending on the status of the product. The light indicates product status and is useful for diagnosing printing problems.

Figure : Buttons and light on the control panel

Power light

Cancel button

The following sections describe the most common issues associated with the blinking Power light. From the following choices, find the issue you are experiencing, and then expand that section for solutions to resolve the issue.

Issue: The Power light blinks and a message displays on the computer

The Power light blinks and a message displays on the computer.

Figure : The Power light blinks

Cause

The product requires maintenance, or is in an error state

How do I resolve this issue? The following sections describe the most common messages that display on the computer when the Power light blinks. From the following choices, find the message that displays on your computer, and then expand that section for solutions.

A 'Printer cover is open' message displays on the computer

The Power light blinks and a 'Printer cover is open' message displays on the computer.

Cause: The top cover is open.

Solution

Close the top cover.

Figure : Close the top cover

An 'Out of paper' message displays on the computer

The Power light blinks and an 'Out of paper' message displays on the computer.

Cause: The product is out of paper, or the paper is not properly loaded in the tray.

Solutions

Follow these solutions in the order presented to resolve the issue.

Solution one: Load paper

Open the top cover.

Figure : Open the top cover
Lift the output tray.

Figure : Lift the output tray
Slide the paper width guide to its outermost position.

Figure : Slide the paper width guide to its outermost position
With the print side down, insert a stack of paper into the tray until it rests against the rear edge of the tray. Then slide the paper width guide inward so that it rests against the edge of the paper.

Figure : Load paper and slide the paper width guide inward
Lower the output tray, and then close the top cover.

If these steps resolved the issue, you do not need to continue troubleshooting.
If the issue persists, continue to the next solution.

Solution two: Check the condition of the paper, and then reload it

Paper feed issues might result from dusty, torn, wrinkled, wet, or folded paper in the tray. The quality of the paper can also make a difference. Use only good quality paper that meets product specifications. Follow these steps to check the condition of the paper and then reload the paper.

Step one: Check the condition of the paper

Remove the stack of paper from the tray.
Check for obstructions inside the tray. Use a flashlight to view the mechanism inside the tray to make sure that nothing blocks the paper from engaging with the rollers. Even small pieces of paper can cause paper feed issues.

note:
If you find obstructions in the paper path, skip to the section on cleaning the rollers.
Examine the condition of the paper, and then replace any ripped, dusty, curled, wrinkled, or bent paper.
Make sure that all the paper in the stack is the same size and type. Never load mixed types of paper in the tray. The product can only process one type of paper at a time.
Tap the stack of paper on a flat surface to align the edges.
Make sure that the stack of paper contains no fewer than 10 sheets and no more than 25 sheets of paper.

note:
You need to use 10 to 25 sheets of paper only for purposes of these troubleshooting steps. When the issue is resolved, you can resume loading paper according to the paper tray capacity specifications for your product.

Step two: Reload the paper

Open the top cover.

Figure : Open the top cover
Lift the output tray.

Figure : Lift the output tray
Slide the paper width guide to its outermost position.

Figure : Slide the paper width guide to its outermost position
Remove any paper from the tray.
With the print side down, reinsert the stack of paper into the tray until it rests against the rear edge of the tray. Then slide the paper width guide inward so that it rests against the edge of the paper.

Figure : Load paper and slide the paper width guide inward
Lower the output tray, and then close the top cover.

If these steps resolved the issue, you do not need to continue troubleshooting.
If the issue persists, continue to the next solution.

Solution three: Clean the paper rollers

Dust, paper fiber, and other debris might accumulate on the paper rollers and cause paper feed issues. Follow these steps to clean the paper rollers inside the product.

Gather the following materials:
- A clean, lint-free cloth, or any cloth that will not come apart or leave fibers
- A clean, lint-free swab that will not come apart or leave fibers
- Distilled, filtered, or bottled water (tap water might damage the product)
Press the Power button () to turn off the product.
Disconnect the power cord from the rear of the product.
Remove the rear access door. Press the door latch to the right, and then pull out the door.

Figure : Remove the rear access door
Lightly dampen the cloth with the water, and then squeeze any excess liquid from the cloth.
Press the cloth against the rollers and rotate them upward with your fingers. Apply a moderate amount of pressure to remove dust or dirt buildup.

Figure : Rotate the paper rollers
Lightly dampen the swab with the water, and then squeeze any excess liquid from the swab.
Press the swab against the paper pick roller and rotate it upward with your finger. Apply a moderate amount of pressure to make sure that you remove dust or dirt buildup.

Figure : Clean the paper pick roller
Allow the rollers to dry for 10 to 15 minutes.
Make sure that the rollers on the rear access door are clean and in good condition. If any rollers are missing, stuck, or loose, replace the rear access door.

Figure : Rollers on the rear access door
Reattach the rear access door. Insert the right side of the door into the rear of the product, and then push the door inward until it snaps into place.
Reconnect the power cord to the rear of the product.
Press the Power button () to turn on the product.

A 'Paper jam' message displays on the computer

The Power light blinks and a 'Paper jam' message displays on the computer.

Cause: The product might have a paper jam.

Solutions

Important: You must follow these solutions in the order presented to resolve the issue.

Solution one: Restart the printer

Follow these steps to try resetting the print mechanism by performing a product restart.

Step one: Restart the printer

Press the Power button () to turn off the product. If the product does not turn off, continue to the next solution.
Wait 60 seconds.
Press the Power button to turn on the product.

note:
The product might go through a brief warm-up period. Wait until the warm-up period completes before continuing.

Step two: Print a self-test report

Print a self-test report to make sure that the hardware functions correctly.

Make sure that plain white paper is loaded in the input tray.
Press and hold the Power button ().
Open and close the top cover four times, and then release the Power button. The self-test report prints.

Figure : Open and close the top cover four times

If these steps resolved the issue, and the test page prints, there is no need to continue troubleshooting.
If the issue persists, continue with the next solution.
If the test page does not print, continue with the next solution.

Solution two: Clear the paper jam

Follow these steps in the order presented to clear any jammed paper from the product. Always clear jammed paper from the rear of the product first, and then from the front.

Step one: Remove loose paper from the tray

Remove any loose sheets of paper from the input tray and the output tray.

caution:
Do not remove jammed paper at this stage. Trying to clear jammed paper from the front of the product can damage theprint mechanism.

Step two: Clear the paper jam from the rear of the printer

Follow these steps to clear any jammed paper from the rear of the product.

Press the Power button () to turn off the product.
Disconnect the power cord from the rear of the product.
Disconnect the USB cable from the rear of the product.
Remove the rear access door. Press the door latch to the right, and then pull out the door.

Figure : Remove the rear access door
Carefully remove any jammed paper and bits of torn paper from the rollers inside the product. Use both hands to pull whole sheets of paper to avoid tearing them.

note:
Use a flashlight to thoroughly check the rollers and wheels for torn pieces of paper. If any torn pieces of paper remain inside the product, more jams are likely to occur.
Reattach the rear access door. Insert the right side of the door into the rear of the product, and then push the door inward until it snaps into place.

Step three: Clear the paper jam from the front of the printer

Follow these steps to clear any jammed paper from the front of the product.

Open the top cover.

Figure : Open the top cover
Carefully remove any jammed paper and bits of torn paper from the rollers inside the product. Use both hands to pull whole sheets of paper to avoid tearing them.

note:
Use a flashlight to thoroughly check the rollers and wheels for torn pieces of paper. If any torn pieces of paper remain inside the product, more jams are likely to occur.
Close the top cover.
Reconnect the power cord to the rear of the product.
Press the Power button () to turn on the product.

Step four: Make sure that the carriage moves freely

Follow these steps to make sure that the carriage moves freely.

Press the Power button () to turn on the product, if it is not on already.
Open the top cover. The carriage might move to the access area. Wait until the carriage is idle and silent before proceeding.

Figure : Open the top cover
With the product turned on, disconnect the power cord from the rear of the product.

warning:
You must unplug the power cord to move the carriage by hand to avoid the risk of electrical shock.
Carefully remove any paper or objects that might be restricting the carriage.

note:
Use a flashlight to thoroughly check the inside of the product. If any torn pieces of paper remain inside the product, more jams are likely to occur.
Reach inside the product, and then manually move the carriage.
- If the carriage is on the right side of the product, move the carriage to the left side of the product.
- If the carriage is on the left side of the product, move the carriage to the right side of the product.
- If the carriage is in the middle of the product, move the carriage to the right side of the product.
Make sure that the carriage can move freely across the width of the product by gently pushing the carriage to the left, and then to the right.
Close the top cover.
Reconnect the power cord to the rear of the product.
Press the Power button () to turn on the product.

Step five: Print a self-test report

Print a self-test report to make sure that the hardware functions correctly.

How to print a self-test report

Make sure that plain white paper is loaded in the input tray.
Press and hold the Power button ().
Open and close the top cover four times, and then release the Power button. The self-test report prints.

Figure : Open and close the top cover four times

If these steps resolved the issue, and the test page prints, there is no need to continue troubleshooting. Reconnect the USB cable, and then try to print again.
If the issue persists, continue with the next solution.
If the test page does not print, continue with the next solution.

Solution three: Clean the paper rollers

Dust, paper fiber, and other debris might accumulate on the paper rollers and cause paper feed issues. Follow these steps to clean the paper rollers inside the product.

Step one: Clean the rollers

Gather the following materials:
- A clean, lint-free cloth, or any cloth that will not come apart or leave fibers
- A clean, lint-free swab that will not come apart or leave fibers
- Distilled, filtered, or bottled water (tap water might damage the product)
Press the Power button () to turn off the product.
Disconnect the power cord from the rear of the product.
Remove the rear access door. Press the door latch to the right, and then pull out the door.

Figure : Remove the rear access door
Lightly dampen the cloth with the water, and then squeeze any excess liquid from the cloth.
Press the cloth against the rollers and rotate them upward with your fingers. Apply a moderate amount of pressure to remove dust or dirt buildup.

Figure : Rotate the paper rollers
Lightly dampen the swab with the water, and then squeeze any excess liquid from the swab.
Press the swab against the paper pick roller and rotate it upward with your finger. Apply a moderate amount of pressure to make sure that you remove dust or dirt buildup.

Figure : Clean the paper pick roller
Allow the rollers to dry for 10 to 15 minutes.
Make sure that the rollers on the rear access door are clean and in good condition. If any rollers are missing, stuck, or loose, replace the rear access door.

Figure : Rollers on the rear access door
Reattach the rear access door. Insert the right side of the door into the rear of the product, and then push the door inward until it snaps into place.
Reconnect the power cord to the rear of the product.
Press the Power button () to turn on the product.

Step two: Print a self-test report

Print a self-test report to make sure that the hardware functions correctly.

How to print a self-test report

Make sure that plain white paper is loaded in the input tray.
Press and hold the Power button ().
Open and close the top cover four times, and then release the Power button. The self-test report prints.

Figure : Open and close the top cover four times

If these steps resolved the issue, and the test page prints, there is no need to continue troubleshooting. Reconnect the USB cable, and then try to print again.
If the issue persists, continue with the next solution.
If the test page does not print, continue with the next solution.

Solution four: Reset the printer

Sometimes a paper jam error persists even though there is no jammed paper (false paper jam). Follow these steps to perform a power reset to try clearing a false paper jam error.

Step one: Reset the printer

With the printer turned on, disconnect the power cord from the rear of the printer.
Unplug the power cord from the wall outlet.
Wait at least 15 seconds.
Plug the power cord back into the wall outlet.
Reconnect the power cord to the printer.
Turn the printer on.

Step two: Print a self-test report

Print a self-test report to make sure that the hardware functions correctly.

How to print a self-test report

Make sure that plain white paper is loaded in the input tray.
Press and hold the Power button ().
Open and close the top cover four times, and then release the Power button. The self-test report prints.

Figure : Open and close the top cover four times

If these steps resolved the issue, and the test page prints, there is no need to continue troubleshooting. Reconnect the USB cable, and then try to print again.
If the issue persists, continue with the next solution.
If the test page does not print, continue with the next solution.

Solution five: Service the printer

If you have completed all the steps listed above and are still experiencing a problem, continue to the Service the printer section at the end of this document.

A 'No Print Cartridges Have Been Detected' message displays on the computer

The Power light blinks and a 'No Print Cartridges Have Been Detected' message displays on the computer.

Cause: There is an issue with one or both of the cartridges.

Solutions

Follow these solutions in the order presented to resolve the issue.

Important: Before you begin, make sure that the cartridges are compatible with your product.

Purchase replacement cartridges and other supplies from the HP Store or local retailers.

If the cartridges are compatible with your product, try the following solutions in the order presented.
If the cartridges are not compatible with your product, skip to Solution four to replace the cartridges.

Solution one: Check the estimated ink levels

Follow these steps to check the ink levels, and then replace any low cartridges.

Step one: Check the estimated ink levels

note:
If you inserted a refilled or remanufactured cartridge, or a cartridge that was previously used in another product, the ink level indicator might be inaccurate or unavailable.

Make sure that the product is on and connected to the computer.
From the drop-down menu on the document or image you are printing, click File, and then click Print. The Print window opens.
Click Properties or Preferences. The Printer Properties window opens.
Click the Services tab, and then click Service this device.
Click the Estimated Ink Level tab.

note:
Ink level indicators provide estimates for planning purposes only. When an indicator shows low ink levels, consider having a replacement cartridge available to avoid possible printing delays. You do not need to replace cartridges until print quality becomes unacceptable.

If the cartridges are not empty, continue to the next solution.
If one or both cartridges are empty, continue to the next step.

Step two: Replace the empty cartridge

Follow these steps to replace the empty cartridge.

Press the Power button () to turn on the product.
Open the top cover. Wait until the carriage moves to the access area and is idle and silent before proceeding.

Figure : Open the top cover
Press down on the cartridge, and then pull it toward you to remove it from the slot.

Figure : Remove the cartridge
Remove the new cartridge from its package, and then carefully remove the protective tape.

Figure : Remove the protective tape from the cartridge
Hold the cartridge so that the nozzles face down and the contacts face toward the carriage.

caution:
Do not touch the copper-colored contacts or the ink nozzles. Touching these parts can result in clogs, ink failure, and bad electrical connections.
Slide the cartridge at a slight upward angle into its slot, and then gently push it forward until it snaps into place.

Figure : Insert the cartridge
Repeat these steps to replace the other cartridge, if necessary.
Close the top cover.

Step three: Align the cartridges

After inserting a new cartridge, align the cartridges to ensure the best print quality. Choose your operating system below for steps to align the cartridges.

Windows XP
1. Make sure that the product is on and connected to the computer.
2. On the Windows task bar, click Start (), and then click Printers and Faxes. The Printers and Faxes window opens.
3. Right-click the icon for your HP product, and then click Properties. The Printer Properties window opens.
4. Click the Services tab, and then click Service this device.
5. Click Align the Device, click Align, and then follow the on-screen instructions.
Windows Vista
1. Make sure that the product is on and connected to the computer.
2. On the Windows task bar, click the Windows icon (), and then click Printers. The Printers window opens.
3. Right-click the icon for your HP product, and then click Properties. The Printer Properties window opens.
4. Click the Services tab, and then click Service this device.
5. Click Align the Device, click Align, and then follow the on-screen instructions.
Windows 7
1. Make sure that the product is on and connected to the computer.
2. On the Windows task bar, click the Windows icon (), and then click Printers and Devices. The Printers and Faxes window opens.
3. Right-click the icon for your HP product, and then click Properties. The Printer Properties window opens.
4. Click the Services tab, and then click Service this device.
5. Click Align the Device, click Align, and then follow the on-screen instructions.

If these steps resolved the issue, you do not need to continue troubleshooting.
If the issue persists, continue to the next solution.

Solution two: Remove and reinsert the cartridges

One or both of the cartridges might not have full electrical contact with the carriage. Follow these steps to remove and reinsert the cartridges.

Press the Power button () to turn on the product.
Open the top cover. The carriage might move to the access area. Wait until the carriage is idle and silent before proceeding.

Figure : Open the top cover
Press down on the cartridge to release it, and then pull it toward you to remove it from the slot.

Figure : Remove the cartridge
Inspect the cartridge. Make sure that no protective tape remains on the contacts or the nozzles.

Figure : Remove any protective tape from the cartridge
Hold the cartridge so that the nozzles face down and the contacts face toward the carriage.

caution:
Do not touch the copper-colored contacts or the ink nozzles. Touching these parts can result in clogs, ink failure, and bad electrical connections.
Slide the cartridge at a slight upward angle into its slot, and then gently push it forward until it snaps into place.

Figure : Insert the cartridge
Repeat these steps to remove and reinsert the other cartridge.
Close the top cover.

If these steps resolved the issue, you do not need to continue troubleshooting.
If the issue persists, continue to the next solution.

Solution three: Clean the cartridges

Follow these steps to clean the cartridge contacts.

Gather the following materials:
- Clean swabs that will not come apart or leave fibers
- Distilled, filtered, or bottled water (tap water might damage the cartridge)
- A sheet of paper or a paper towel
Press the Power button () to turn on the product.
Open the top cover. Wait until the carriage moves to the access area and is idle and silent before proceeding.

Figure : Open the top cover
Press down on the cartridge to release it, and then pull it toward you to remove it from the slot.

caution:
Remove and clean each cartridge one at a time. Do not leave a cartridge outside the product for more than 30 minutes.

Figure : Remove the cartridge
Dip the swab in the water, and then squeeze off any excess water.
Use the swab to remove any ink and debris from the contacts on the cartridge.
Figure : Clean the contacts

Copper-colored contacts

Ink nozzles (Do not clean)
Place the cartridge on the sheet of paper or paper towel, and allow the cartridge to dry for 5 to 10 minutes. Make sure the nozzles are not in contact with the paper.
Hold the cartridge so that the nozzles face down and the contacts face toward the carriage.
Slide the cartridge at a slight upward angle into its slot, and then gently push it forward until it snaps into place.

Figure : Insert the cartridge
Repeat these steps to clean the other cartridge.
Close the top cover.

If these steps resolved the issue, you do not need to continue troubleshooting.
If the issue persists, continue to the next solution.

Solution four: Replace the cartridges

Follow these steps to replace the cartridges.

Step one: Replace the cartridges

Press the Power button () to turn on the product.
Open the top cover. Wait until the carriage moves to the access area and is idle and silent before proceeding.

Figure : Open the top cover
Press down on the cartridge, and then pull it toward you to remove it from the slot.

Figure : Remove the cartridge
Remove the new cartridge from its package, and then carefully remove the protective tape.

Figure : Remove the protective tape from the cartridge
Hold the cartridge so that the nozzles face down and the contacts face toward the carriage.

caution:
Do not touch the copper-colored contacts or the ink nozzles. Touching these parts can result in clogs, ink failure, and bad electrical connections.
Slide the cartridge at a slight upward angle into its slot, and then gently push it forward until it snaps into place.

Figure : Insert the cartridge
Repeat these steps to replace the other cartridge, if necessary.
Close the top cover.

Step two: Align the cartridges

After inserting a new cartridge, align the cartridges to ensure the best print quality. Choose your operating system below for steps to align the cartridges.

How to align the cartridges

Windows XP
1. Make sure that the product is on and connected to the computer.
2. On the Windows task bar, click Start (), and then click Printers and Faxes. The Printers and Faxes window opens.
3. Right-click the icon for your HP product, and then click Properties. The Printer Properties window opens.
4. Click the Services tab, and then click Service this device.
5. Click Align the Device, click Align, and then follow the on-screen instructions.
Windows Vista
1. Make sure that the product is on and connected to the computer.
2. On the Windows task bar, click the Windows icon (), and then click Printers. The Printers window opens.
3. Right-click the icon for your HP product, and then click Properties. The Printer Properties window opens.
4. Click the Services tab, and then click Service this device.
5. Click Align the Device, click Align, and then follow the on-screen instructions.
Windows 7
1. Make sure that the product is on and connected to the computer.
2. On the Windows task bar, click the Windows icon (), and then click Printers and Devices. The Printers and Faxes window opens.
3. Right-click the icon for your HP product, and then click Properties. The Printer Properties window opens.
4. Click the Services tab, and then click Service this device.
5. Click Align the Device, click Align, and then follow the on-screen instructions.

An 'Error writing to USB port' message displays on the computer

The Power light blinks and an 'Error writing to USB port' message displays on the computer.

Cause: There is an issue with the USB hub.

Solution

Connect the product directly into a USB port on the computer.

A 'Mechanism Error' message displays on the computer

The Power light blinks and a 'Mechanism Error' message displays on the computer.

Cause: The carriage is stalled.

Solutions

Important: You must follow these solutions in the order presented to resolve the issue.

Solution one: Restart the printer

Follow these steps to turn the product off and on again, and then print a self-test report.

Step one: Restart the printer

Press the Power button () to turn off the product. If the product does not turn off, continue to the next solution.
Wait 60 seconds.
Press the Power button to turn the product on.

note:
The product might go through a brief warm-up period. Wait until the warm-up period completes before you continue.

Step two: Print a self-test report

Print a self-test report to make sure that the hardware functions correctly.

Make sure that plain white paper is loaded in the input tray.
Press and hold the Power button ().
Open and close the top cover four times, and then release the Power button. The self-test report prints.

Figure : Open and close the top cover four times

If these steps resolved the issue, and the test page prints, there is no need to continue troubleshooting.
If the issue persists, continue with the next solution.
If the test page does not print, continue with the next solution.

Solution two: Clear the paper jam

Follow these steps in the order presented to clear any jammed paper from the product. Always clear jammed paper from the rear of the product first, and then from the front.

Step one: Remove loose paper from the tray

Remove any loose sheets of paper from the input tray and the output tray.

caution:
Do not remove jammed paper at this stage. Trying to clear jammed paper from the front of the product can damage theprint mechanism.

Step two: Clear the paper jam from the rear of the printer

Follow these steps to clear any jammed paper from the rear of the product.

Press the Power button () to turn off the product.
Disconnect the power cord from the rear of the product.
Disconnect the USB cable from the rear of the product.
Remove the rear access door. Press the door latch to the right, and then pull out the door.

Figure : Remove the rear access door
Carefully remove any jammed paper and bits of torn paper from the rollers inside the product. Use both hands to pull whole sheets of paper to avoid tearing them.

note:
Use a flashlight to thoroughly check the rollers and wheels for torn pieces of paper. If any torn pieces of paper remain inside the product, more jams are likely to occur.
Reattach the rear access door. Insert the right side of the door into the rear of the product, and then push the door inward until it snaps into place.

Step three: Clear the paper jam from the front of the printer

Follow these steps to clear any jammed paper from the front of the product.

Open the top cover.

Figure : Open the top cover
Carefully remove any jammed paper and bits of torn paper from the rollers inside the product. Use both hands to pull whole sheets of paper to avoid tearing them.

note:
Use a flashlight to thoroughly check the rollers and wheels for torn pieces of paper. If any torn pieces of paper remain inside the product, more jams are likely to occur.
Close the top cover.
Reconnect the power cord to the rear of the product.
Press the Power button () to turn on the product.

Step four: Print a self-test report

Print a self-test report to make sure that the hardware functions correctly.

How to print a self-test report

Make sure that plain white paper is loaded in the input tray.
Press and hold the Power button ().
Open and close the top cover four times, and then release the Power button. The self-test report prints.

Figure : Open and close the top cover four times

If these steps resolved the issue, and the test page prints, there is no need to continue troubleshooting. Reconnect the USB cable, and then try to print again.
If the issue persists, continue with the next solution.
If the test page does not print, continue with the next solution.

Solution three: Make sure that the carriage moves freely

Follow these steps to make sure that the carriage moves freely.

Step one: Check the carriage path

Follow these steps to make sure that the carriage moves freely.

Press the Power button () to turn on the product, if it is not on already.
Open the top cover. The carriage might move to the access area. Wait until the carriage is idle and silent before proceeding.

Figure : Open the top cover
With the product turned on, disconnect the power cord from the rear of the product.

warning:
You must unplug the power cord to move the carriage by hand to avoid the risk of electrical shock.
Carefully remove any paper or objects that might be restricting the carriage.

note:
Use a flashlight to thoroughly check the inside of the product. If any torn pieces of paper remain inside the product, more jams are likely to occur.
Reach inside the product, and then manually move the carriage.
- If the carriage is on the right side of the product, move the carriage to the left side of the product.
- If the carriage is on the left side of the product, move the carriage to the right side of the product.
- If the carriage is in the middle of the product, move the carriage to the right side of the product.
Make sure that the carriage can move freely across the width of the product by gently pushing the carriage to the left, and then to the right.
Close the top cover.
Reconnect the power cord to the rear of the product.
Press the Power button () to turn on the product.

Step two: Print a self-test report

Print a self-test report to make sure that the hardware functions correctly.

How to print a self-test report

Make sure that plain white paper is loaded in the input tray.
Press and hold the Power button ().
Open and close the top cover four times, and then release the Power button. The self-test report prints.

Figure : Open and close the top cover four times

If these steps resolved the issue, and the test page prints, there is no need to continue troubleshooting. Reconnect the USB cable, and then try to print again.
If the issue persists, continue with the next solution.
If the test page does not print, continue with the next solution.

Solution four: Remove and reinsert the cartridges

One or both of the cartridges might not have full electrical contact with the carriage. Follow these steps to remove and reinsert the cartridges.

Step one: Remove and reinsert the cartridges

Press the Power button () to turn on the product.
Open the top cover. The carriage might move to the access area. Wait until the carriage is idle and silent before proceeding.

Figure : Open the top cover
Press down on the cartridge to release it, and then pull it toward you to remove it from the slot.

Figure : Remove the cartridge
Inspect the cartridge. Make sure that no protective tape remains on the contacts or the nozzles.

Figure : Remove any protective tape from the cartridge
Hold the cartridge so that the nozzles face down and the contacts face toward the carriage.

caution:
Do not touch the copper-colored contacts or the ink nozzles. Touching these parts can result in clogs, ink failure, and bad electrical connections.
Slide the cartridge at a slight upward angle into its slot, and then gently push it forward until it snaps into place.

Figure : Insert the cartridge
Repeat these steps to remove and reinsert the other cartridge.
Close the top cover.

Step two: Print a self-test report

Print a self-test report to make sure that the hardware functions correctly.

How to print a self-test report

Make sure that plain white paper is loaded in the input tray.
Press and hold the Power button ().
Open and close the top cover four times, and then release the Power button. The self-test report prints.

Figure : Open and close the top cover four times

If these steps resolved the issue, and the test page prints, there is no need to continue troubleshooting. Reconnect the USB cable, and then try to print again.
If the issue persists, continue with the next solution.
If the test page does not print, continue with the next solution.

Solution five: Plug the printer directly into a wall outlet

Plug the product directly into a wall outlet to make sure that the power source functions correctly.

Step one: Plug the printer into a wall outlet

Plug the product into a wall outlet to make sure that the power source functions properly. If the product is already plugged into a wall outlet, skip to the next solution.

Disconnect the power cord from the rear of the product.
Unplug the power cord from any power strip or surge suppressor, and then plug it directly into a wall outlet.
Reconnect the power cord to the rear of the product.
Press the Power button () to turn on the product.

Step two: Print a self-test report

Print a self-test report to make sure that the hardware functions correctly.

How to print a self-test report

Make sure that plain white paper is loaded in the input tray.
Press and hold the Power button ().
Open and close the top cover four times, and then release the Power button. The self-test report prints.

Figure : Open and close the top cover four times

If these steps resolved the issue, and the test page prints, there is no need to continue troubleshooting. Reconnect the USB cable, and then try to print again.
If the issue persists, continue with the next solution.
If the test page does not print, continue with the next solution.

Solution six: Reset the printer

Follow these steps to reset the product, and then print a self-test report.

Step one: Reset the printer

With the printer turned on, disconnect the power cord from the rear of the printer.
Unplug the power cord from the wall outlet.
Wait at least 15 seconds.
Plug the power cord back into the wall outlet.
Reconnect the power cord to the printer.
Turn the printer on.

Step two: Print a self-test report

Print a self-test report to make sure that the hardware functions correctly.

How to print a self-test report

Make sure that plain white paper is loaded in the input tray.
Press and hold the Power button ().
Open and close the top cover four times, and then release the Power button. The self-test report prints.

Figure : Open and close the top cover four times

If these steps resolved the issue, and the test page prints, there is no need to continue troubleshooting. Reconnect the USB cable, and then try to print again.
If the issue persists, continue with the next solution.
If the test page does not print, continue with the next solution.

Solution seven: Service the printer

If you have completed all the steps listed above and are still experiencing a problem, continue to the Service the printer section at the end of this document.

Issue: The Power light blinks when printing labels

The Power light blinks when trying to print labels, and the labels do not print.

Figure : The Power light blinks

Cause

The label print job is not properly set up, or there is an issue with the labels.

Solutions

Follow these solutions in the order presented to resolve the issue.

Solution one: Check the condition of the labels, and then reload them

Follow these steps to check the condition of the labels, and then relocad them into the product.

Step one: Check the condition of the labels

Label feed issues might result from dusty, torn, wrinkled, wet, or folded label sheets in the tray. The quality of the labels can also make a difference. Use only good quality labels that meet product specifications. Follow these steps to check the condition of the labels.

Remove the stack of labels from the tray.
Check for obstructions inside the tray. Use a flashlight to view the mechanism inside the tray to make sure that nothing blocks the labels from engaging with the rollers. Even small pieces of paper can cause paper feed issues.

note:
If you find obstructions in the paper path, skip to the section on cleaning the rollers.
Examine the condition of the labels, and then replace any ripped, dusty, curled, wrinkled, or bent sheets of labels.
Make sure that all the labels in the stack are the same size and type. Never load mixed types of labels in the tray. The product can only process one type of label at a time.
Tap the stack of labels on a flat surface to align the edges.
Make sure that the stack of labels contains no fewer than 10 sheets and no more than 20 sheets.

note:
You need to use 10 to 20 sheets of paper only for purposes of these troubleshooting steps. When the issue is resolved, you can resume loading paper according to the paper tray capacity specifications for your product.

Step two: Reload the labels

Open the top cover.

Figure : Open the top cover
Lift the output tray.

Figure : Lift the output tray
Slide the paper width guide to its outermost position.

Figure : Slide the paper width guide to its outermost position
With the print side down, reinsert the stack of labels into the tray until it rests against the rear edge of the tray.

Figure : Load the labels and slide the paper width guide inward
Slide the paper width guide inward so that it rests against the edge of the labels.
Lower the output tray, and then close the top cover.

If these steps resolved the issue, you do not need to continue troubleshooting.
If the issue persists, continue to the next solution.

Solution two: Check the print settings

Follow these steps to make sure that the label settings are correct for your print job.

From the drop-down menu on the document or image you are printing, click File, and then click Print. The Print window opens.
Click Properties or Preferences. The Printer Properties window opens.
Click the Printing Shortcuts tab, and then click General everyday printing.
From the Paper size drop-down list, select Plain or A4.
From the Paper type drop-down list, select Labels or Plain paper, depending on your software program.

If these steps resolved the issue, you do not need to continue troubleshooting.
If the issue persists, continue to the next solution.

Solution three: Clean the paper rollers

Dust, paper fiber, and other debris might accumulate on the paper rollers and cause paper feed issues. Follow these steps to clean the paper rollers inside the product.

Gather the following materials:
- A clean, lint-free cloth, or any cloth that will not come apart or leave fibers
- A clean, lint-free swab that will not come apart or leave fibers
- Distilled, filtered, or bottled water (tap water might damage the product)
Press the Power button () to turn off the product.
Disconnect the power cord from the rear of the product.
Remove the rear access door. Press the door latch to the right, and then pull out the door.

Figure : Remove the rear access door
Lightly dampen the cloth with the water, and then squeeze any excess liquid from the cloth.
Press the cloth against the rollers and rotate them upward with your fingers. Apply a moderate amount of pressure to remove dust or dirt buildup.

Figure : Rotate the paper rollers
Lightly dampen the swab with the water, and then squeeze any excess liquid from the swab.
Press the swab against the paper pick roller and rotate it upward with your finger. Apply a moderate amount of pressure to make sure that you remove dust or dirt buildup.

Figure : Clean the paper pick roller
Allow the rollers to dry for 10 to 15 minutes.
Make sure that the rollers on the rear access door are clean and in good condition. If any rollers are missing, stuck, or loose, replace the rear access door.

Figure : Rollers on the rear access door
Reattach the rear access door. Insert the right side of the door into the rear of the product, and then push the door inward until it snaps into place.
Reconnect the power cord to the rear of the product.
Press the Power button () to turn on the product.

Issue: The Power light blinks and there are missing lines or banding on the printout

The Power light blinks and the printout has missing lines or banding.

Figure : The Power light blinks

Cause

One or both cartridges are not seated properly, or the cartridges need to be cleaned.

Solution

Follow these steps in the order presented to resolve the issue.

Step one: Print a self-test report

Make sure that plain white paper is loaded in the input tray.
Press and hold the Power button ().
Open and close the top cover four times, and then release the Power button. The self-test report prints.

Figure : Open and close the top cover four times
Check the nozzle bars and patterns on the self-test report for issues.

note:
The bars and patterns in the following examples might look different than those on the self-test report for your product.

Figure : Faded, streaked, or missing bars

Figure : Broken pattern lines or a missing color pattern

If there are no issues on the self-test report, the issue is resolved.
If there are issues on the self-test report, or if the report does not successfully print, continue to the next step.

Step two: Remove and reinsert the cartridges

Press the Power button () to turn on the product.
Open the top cover. The carriage might move to the access area. Wait until the carriage is idle and silent before proceeding.

Figure : Open the top cover
Press down on the cartridge to release it, and then pull it toward you to remove it from the slot.

Figure : Remove the cartridge
Inspect the cartridge. Make sure that no protective tape remains on the contacts or the nozzles.

Figure : Remove any protective tape from the cartridge
Hold the cartridge so that the nozzles face down and the contacts face toward the carriage.

caution:
Do not touch the copper-colored contacts or the ink nozzles. Touching these parts can result in clogs, ink failure, and bad electrical connections.
Slide the cartridge at a slight upward angle into its slot, and then gently push it forward until it snaps into place.

Figure : Insert the cartridge
Repeat these steps to remove and reinsert the other cartridge, if necessary.
Close the top cover.

If these steps resolved the issue, there is no need to continue troubleshooting.
If the issue persists, see the next step.

Step three: Clean the cartridges

Gather the following materials:
- Clean swabs that will not come apart or leave fibers
- Distilled, filtered, or bottled water (tap water might damage the cartridge)
- A sheet of paper or a paper towel
Press the Power button () to turn on the product.
Open the top cover. Wait until the carriage moves to the access area and is idle and silent before proceeding.

Figure : Open the top cover
Press down on the cartridge to release it, and then pull it toward you to remove it from the slot.

caution:
Remove and clean each cartridge one at a time. Do not leave a cartridge outside the product for more than 30 minutes.

Figure : Remove the cartridge
Dip the swab in the water, and then squeeze off any excess water.
Use the swab to remove any ink and debris from the contacts on the cartridge.
Figure : Clean the contacts

Copper-colored contacts

Ink nozzles (Do not clean)
Place the cartridge on the sheet of paper or paper towel, and allow the cartridge to dry for 5 to 10 minutes. Make sure the nozzles are not in contact with the paper.
Hold the cartridge so that the nozzles face down and the contacts face toward the carriage.
Slide the cartridge at a slight upward angle into its slot, and then gently push it forward until it snaps into place.

Figure : Insert the cartridge
Repeat these steps to clean the other cartridge, if necessary.
Close the top cover.

If these steps resolved the issue, there is no need to continue troubleshooting.
If the issue persists, see the next step.

Step four: Service the printer

If you have completed all the steps listed above and are still experiencing a problem, continue to the Service the printer section at the end of this document.

Service the printer

Service or replace your HP product if the issue persists after completing all the preceding steps.

Go to Contact HP Customer Support to schedule a product repair or replacement. If you are in Asia Pacific, you will be directed to a local service center in your area.

To confirm your warranty status, go to HP Product Warranty Check. Repair fees might apply for out-of-warranty products.

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