HP DeskJet 3630, 4720 Printers - Blinking Lights

This document is for HP DeskJet 3630, 3631, 3632, 3633, 3635, 3634, 3636, 3637, 3638, 3639, DeskJet Ink Advantage 3635, 3636, and 3638, and DeskJet Ink Advantage Ultra 4729 All-in-One printers.

The following sections describe the most common error conditions with combinations of blinking (flashing) lights displayed on the control panel, followed by solutions for each combination. Find the blinking lights pattern you are experiencing, and then follow the steps to resolve the issue.

Figure : Control panel with lights indicated

Control panel display

Cancel button

Wireless button/light

Wi-Fi Direct button/status light

Start Copy Color button

Power button/light

Ink Alert light

Resume button/light

Information button/light

HP ePrint button/light

Start Copy Black button

Figure : Control panel display icons

Number of Copies icon

Error icon

Paper Error icon

Wi-Fi Direct icon

Wireless icon

Wireless Attention icon

Signal Bars icon

Ink Level icons

The Power light blinks fast

The Power light blinks at a steady interval when the printer is processing a print job. If the Power light blinks fast, the ink cartridge door might be open, or the printer might be in an error state.

If an error message displays on the computer screen, follow the on-screen messages to resolve the issue. If a message does not display, continue with these steps.

Figure : Power light is blinking fast

Step 1: Close the ink cartridge door

Make sure the ink cartridge door is completely closed.

Close the output tray extender, and then push the output tray into the printer.

Figure : Close the output tray
Open the exterior door.

Figure : Open the exterior door
If the ink cartridge access door is open, close it.

Figure : Close the ink cartridge access door
Close the exterior door.

Figure : Close the exterior door
Pull out the output tray, and then the tray extender.

Figure : Pull out the output tray

Try to print. If the issue persists, continue to the next step.

Step 2: Service the printer

If you have completed all the previous steps and the issue persists, continue to the Service the printer section at the end of this document.

The Wireless light is blinking, and the Wireless icon and Wireless Attention icon are on

This condition occurs when the wireless connection is on, but the printer cannot find a wireless signal.

Figure : Wireless light is blinking, and the Wireless icon and Wireless Attention icon are on

Step 1: Wait for the printer to establish a connection

The Wireless light blinks when the printer is attempting to connect to the wireless router or access point. Wait a few minutes, and then check the light again.

If the printer establishes a connection, you can stop troubleshooting.
If the Wireless light is still blinking, continue to the next step.

Step 2: Check for issues with the wireless network

The following factors can cause the printer to lose the wireless connection:

The network connection is no longer active, or has low signal strength.
The printer goes into sleep mode or standby mode.
The printer is either too far away from the wireless router, or too close to it. The recommended distance between the printer and the router is 1.0 meter to 1.5 meters (3 ft to 5 ft).
A firewall prevents the printer from accessing the computer and wireless network.
A nearby device that emits radio signals (such as a microwave or cordless telephone) might interfere with the wireless connection.
A virtual private network (VPN) prevents the printer from accessing the computer and wireless network.

If you corrected any of the items in the list and enabled the printer to establish a connection, you do not need to continue troubleshooting.

Step 3: Connect the printer to your network

For more information about connecting the printer to the wireless network by installing the printer software, see Setting Up the Printer Software for a Wireless Network.

The HP ePrint light is blinking

This condition occurs when ePrint is turned on, but the printer is not connected to the Web Services server.

Enable Web Services, and then set up automatic printer updates to make sure your printer has the most up-to-date functionality. Periodic printer updates are required to use Web Services.

Load plain white paper in the paper tray.
On the printer control panel, press the Wireless () and the Information () buttons at the same time. A Network Configuration Page prints.
Under the General Information section, find the IP address. It's listed as URL(s) for Embedded Web Server.

Figure : Example of an IP address on the Network Configuration Page
Open a new web browser window or tab.
Type the IP address in your web browser's address bar, and then press Enter. The Embedded Web Server (EWS) opens.
From the Home tab, click Web Services.
Under the Web Services Settings section, click Setup, and then click Continue.
Check both boxes to accept the terms of use and enable Web Services, and then click Next. The printer searches for updates, and then automatically prints a Web Services information page.

note:
For more information about setting up and using HP ePrint, see Getting Started with HP ePrint.

The Wireless light is blinking, the Wireless icon is on, and the Wireless Attention icon is blinking

This condition occurs when the printer cannot connect to your network.

Figure : The Wireless light is blinking, the Wireless icon is on, and the Wireless Attention icon is blinking

Step 1: Wait for the printer to establish a connection

The Wireless light blinks slowly when attempting to connect to the wireless router or access point. Wait a few minutes, and then check the light again.

If this step resolved the issue, you do not need to continue troubleshooting.
If the issue persists, continue to the next step.

Step 2: Check for issues with the wireless network

The following factors can cause the printer to lose the wireless connection:

The network connection is no longer active, or has low signal strength.
The printer goes into sleep mode or standby mode.
The printer is either too far away from the wireless router, or too close to it. The recommended distance between the printer and the router is 1.0 meter to 1.5 meters (3 ft to 5 ft).
A firewall prevents the printer from accessing the computer and wireless network.
A nearby device that emits radio signals (such as a microwave or cordless telephone) might interfere with the wireless connection.
A virtual private network (VPN) prevents the printer from accessing the computer and wireless network.

If you corrected any of the items in the list and enabled the printer to establish a connection, you do not need to continue troubleshooting.

Step 3: Connect the printer to your network

For more information about connecting the printer to the wireless network by installing the printer software, see Installing the Printer Software in Windows for a Wireless Network Connection.

The Number of Copies icon alternates between 'E' and '5', and all lights on the control panel are blinking

An E5 error occurs when the printer experiences a scanning error.

Figure : The Number of Copies icon alternates between 'E' and '5', and all lights on the control panel are blinking

Reset the printer to resolve a scanning error. If you were not scanning when the error occurred, skip to Service the printer at the end of this document.

note:
The printer still prints even if the scan feature is unavailable.

Step 1: Reset the printer

Reset the printer, and then try to scan again.

With the printer turned on, disconnect the power cord from the printer.
Unplug the power cord from the power source.
Wait 60 seconds.
Reconnect the power cord to a wall outlet and to the printer.

note:
HP recommends plugging the printer directly into a wall outlet.

Attempt to scan the item again. If the issue persists, continue to the next step.

Step 2: Service the printer

If you have completed all the previous steps and the issue persists, continue to the Service the printer section at the end of this document.

The Number of Copies icon alternates between 'E' and '2'

An E2 error occurs when the printer detects a mismatch between the paper size loaded and the paper size selected in the print driver.

There are two possible patterns for an E2 error:

The Number of Copies alternates between 'E' and '2': The error occurs during a single page print job. The page prints with errors.

Figure : Single page error
The Number of Copies alternates between 'E' and '2,' and the Error icon, Paper Error icon, and the Resume light are blinking: The error occurs during a multi-page print job. The first page prints with errors.

Press the Cancel button to cancel the print job.

note:
If you press the Resume button , the remaining pages print with errors.

Figure : Multi-page error

Step 1: Load the correct paper size

Remove the paper from the input tray, and then load a stack of the correct paper size. For more information about loading paper, go to Loading Paper and Envelopes.

If the paper size is correct, continue to the next step.

Step 2: Change the paper size setting

Open the print settings and change the paper size for the print job.

Change the paper size setting in Windows

Open a document or photo, and then select a paper size in Windows.

In the program you are trying to print from, click File, and then click Print.

The Print window opens.
Open the Properties dialog box.

Depending on the software program, the button might be Properties, Options, Printer Setup, Printer, or Preferences.
Click the Paper/Quality tab, and then click Advanced.
In the Paper Size drop-down menu, select the paper size for the print job.
Click OK to apply the paper size settings, click OK to finalize all settings, and then click Print.

Change the paper size setting in OS X

Open a document or photo, and then select a paper size in OS X.

Open a document, click File, and then click Print.

The Print window opens.
Select the Paper Type/Quality or Media & Quality menu.
Select Paper type. If one of the options matches your paper type exactly, select that option.

If the error persists, continue to the next step.

Step 3: Service the printer

If you have completed all the previous steps and the issue persists, continue to the Service the printer section at the end of this document.

The Error icon, Paper Error icon, and the Resume light are on

This condition occurs when there is no paper in the input tray.

Figure : The Error icon, Paper Error icon, and the Resume light are on

Load the printer with plain, white paper.

Raise the input tray.

Figure : Raise the input tray
Slide the paper width guide all the way to the left.

Figure : Slide the paper width guide left
Load plain white paper into the input tray, and then slide the stack of paper down until it stops.

Figure : Load plain white paper
Slide the paper width guide to the right until it stops at the edge of the paper.

Figure : Slide the paper width guide right
Pull out the output tray, and then raise the tray extender.

Figure : Pull out the output tray, and then raise the tray extender

The Number of Copies icon alternates between 'E' and '4,' and the Error icon, Paper Error icon, Resume light, and Ink Alert light are blinking

An E4 error occurs when there is a paper jam.

Figure : Number of Copies icon alternates between 'E' and '4,' and the Error icon, Paper Error icon, Resume light, and Ink Alert light are blinking

Step 1: Look for jammed paper

Paper jams can occur in multiple areas of the printer. If you cannot find the paper jam in one area, continue to the instructions for the next area until the jam is located.

Clear jammed paper from the input tray

Remove any jammed paper from the input tray.

Press the Cancel button to try and automatically clear the paper jam.

If the paper jam error persists, continue these steps to manually clear the jam.
Gently remove any jammed paper and bits of torn paper from the input tray. To avoid tearing any whole sheets of paper, pull the paper with both hands.
Make sure there are no foreign objects in the paper path, and then reload the input tray with new paper.

note:
The input tray shield prevents foreign debris from falling into the paper path and causing paper jams. Do not remove the input tray shield.
Press the Resume button on the printer control panel to continue the current print job.

Try to print. If the error persists, check for jammed paper in another area of the printer.

Clear jammed paper from the output tray

Remove any jammed paper from the output tray.

Press the Cancel button to try and automatically clear the paper jam.

If the paper jam error persists, continue these steps to manually clear the jam.
Gently remove any jammed paper and bits of torn paper from the output tray. To avoid tearing any whole sheets of paper, pull the paper with both hands.
Press the Resume button on the printer control panel to continue the current print job.

Try to print. If the error persists, check for jammed paper in another area of the printer.

Clear jammed paper from the ink cartridge access area

Remove any jammed paper from the ink cartridge access area.

Press the Cancel button to try and automatically clear the paper jam.

If the paper jam error persists, continue these steps to manually clear the jam.
Press the Power button to turn off the printer.
Disconnect the USB cable from the rear of the printer, if it is not already disconnected.
Disconnect the power cord from the rear of the printer.

warning:
You must disconnect the power cord before reaching inside the printer to avoid risk of injuries or electric shock.
Close the output tray extender, and then push the output tray into the printer.
Open the exterior door.
Open the ink cartridge access door.
If the print carriage is in the center of the printer, gently slide it to the right.
Gently remove any jammed paper from inside the printer.
Close the ink cartridge access door.
Close the exterior door.
Pull out the output tray and tray extender.
Connect the power cord to the rear of the printer.
Connect the USB cable to the rear of the printer if necessary.
Press the Power button to turn on the printer.

Try to print. If the error persists, check for jammed paper in another area of the printer.

Clear jammed paper from underneath the printer

Remove any jammed paper from underneath the printer.

Press the Cancel button to try and automatically clear the paper jam.

If the paper jam error persists, continue these steps to manually clear the jam.
Press the Power button to turn off the printer.
Disconnect the USB cable and power cord from the rear of the printer.
Lower the paper input tray back into the printer, close the output tray extender, and then push the output paper tray into the printer.
Turn the printer so that you can access its underside (base).

caution:
Before turning the printer, use your hands to hold the scanner lid and the paper input tray.
Pull the tabs on either side of the cleanout door to open it.
Gently remove any jammed paper from inside the printer.
Close the cleanout door. Gently push the door forward until it snaps into place.
Turn the printer over to its normal position.
Open the ink cartridge access door, and then look inside the printer for any loose objects that might have shifted when the printer was turned over. Remove any loose objects found.
Close the ink cartridge access door.
Reconnect the power cord to the rear of the printer.
Reconnect the USB cable if necessary.
Press the Power button to turn on the printer.

Try to print. If the error persists, check for jammed paper in another area of the printer.

If you have checked and removed any jammed paper from each printer area and the error persists, continue to the next step.

Step 2: Make sure the ink cartridge carriage moves freely

To make sure there are no foreign objects or paper in the printer, move the ink cartridge carriage across the width of the printer.

If the printer is not turned on, press the Power button to turn it on.
Open the exterior door.
Open the ink cartridge access door.

The carriage moves to the center of the printer.
Wait until the carriage is idle and silent before you continue.
With the printer turned on, disconnect the power cord from the rear of the printer.
Unplug the power cord from the power source or electrical outlet.

warning:
You must unplug the power cord to move the carriage by hand and reset the paper feed mechanism without the risk of electrical shock.
Use a flashlight to check for any paper or objects that might be restricting the carriage, and then remove any paper or objects that you find.

caution:
If the paper tears when you remove it from the rollers, check the rollers and wheels for torn pieces of paper that might remain inside the printer. If pieces of paper remain in the printer, more paper jams can occur.
Reach inside the printer through the ink cartridge access door, and then manually move the carriage.
- If the carriage is stuck on the right side of the printer, move the carriage to the left side of the printer.
- If the carriage is stuck on the left side of the printer, move the carriage to the right side of the printer.
- If the carriage is stuck in the middle of the printer, move the carriage to the right side of the printer.
Remove any loose paper or obstructions you find.
Make sure the carriage can move freely across the width of the printer. Firmly push the carriage to the left side of the printer, and then push the carriage to the right side.
Close the ink cartridge access door.
Close the exterior door.
Reconnect the power cord to the rear of the printer, and then plug the power cord back into the power source or electrical outlet.
Press the Power button to turn on the printer.

Try to print. If the error persists, continue to the next step.

Step 3: Use an automated tool to clean the paper rollers

Use an automated utility to clean the printer's paper feed rollers.

Press the Power button to turn on printer.
Remove paper from the input tray.
Press and hold the Power button, press the Cancel button () three times, press the Start Copy Color button () seven times, and then release the Power button.

The printer makes some noise for approximately one minute. Wait until the printer stops making noises before you proceed.
Try to print. If the error persists, continue to the next step.

Step 4: Use an automated tool to clean ink smears

Cleaning ink smears can help clear paper jams and optimize print quality.

Press the Power button to turn on the printer.
Load paper into the input tray.
Press and hold the Power button, press the Cancel button () three times, press the Start Copy Color button () eight times, and then release the Power button.

The printer feeds one page slowly. The printer might make some noise for approximately one minute. Wait until the page is out of the printer before you remove it.
Try to print. If the error persists, continue to the next step.

Step 5: Manually clean the paper rollers inside the cartridge access area

Dust, paper fiber, and other debris might accumulate on the paper feed rollers and cause paper jams and paper feed issues.

Turn off the printer, and then disconnect the power cord and any other cables.
Raise the input tray.
Lift and hold the input tray shield.

note:
Do not remove the input tray shield. The input tray shield prevents foreign debris from falling into the paper path and causing paper jams.
Look down through the open input tray and find the gray paper pick rollers. You might need a flashlight to illuminate the area.
Lightly dampen the cotton swab with water, and then squeeze any excess liquid from the swab.
Press the swab against the rollers, and then rotate them upward with your fingers. Apply a moderate amount of pressure to remove dust or dirt buildup.
Lower the input tray shield.
Allow the rollers to dry completely (approximately 10 minutes).
Reconnect the power cord and any other cables, and then turn on the printer.

Try to print. If the error persists, continue to the next step.

Step 6: Reset the printer

Sometimes a paper jam error persists even though there is no jammed paper (false paper jam). Reset the printer, which might clear a false paper jam error, and then try to print again.

With the printer turned on, disconnect the power cord from the printer.
Unplug the power cord from the power source.
Wait 60 seconds.
Reconnect the power cord to a wall outlet and to the printer.

note:
HP recommends plugging the printer directly into a wall outlet.

Try to print. If the error persists, continue to the next step.

Step 7: Service the printer

If you have completed all the previous steps and the issue persists, continue to the Service the printer section at the end of this document.

The Number of Copies icon alternates between 'E' and '3,' and the Resume light and Ink Alert light are blinking

An E3 error occurs when there is a printer carriage jam.

Figure : Number of copies alternates between 'E' and '3,' and the Resume light and Ink Alert light are blinking

Step 1: Look for jammed paper

There are four different areas where jammed paper might be found and removed. Check each area for jammed paper, remove any jammed paper found, and then try to print again.

Clear jammed paper from the input tray

Remove any jammed paper from the input tray.

Press the Cancel button to try and automatically clear the paper jam.

If the paper jam error persists, continue these steps to manually clear the jam.
Gently remove any jammed paper and bits of torn paper from the input tray. To avoid tearing any whole sheets of paper, pull the paper with both hands.
Make sure there are no foreign objects in the paper path, and then reload the input tray with new paper.

note:
The input tray shield prevents foreign debris from falling into the paper path and causing paper jams. Do not remove the input tray shield.
Press the Resume button on the printer control panel to continue the current print job.

Try to print. If the error persists, check for jammed paper in another area of the printer.

Clear jammed paper from the output tray

Remove any jammed paper from the output tray.

Press the Cancel button to try and automatically clear the paper jam.

If the paper jam error persists, continue these steps to manually clear the jam.
Gently remove any jammed paper and bits of torn paper from the output tray. To avoid tearing any whole sheets of paper, pull the paper with both hands.
Press the Resume button on the printer control panel to continue the current print job.

Try to print. If the error persists, check for jammed paper in another area of the printer.

Clear jammed paper from the ink cartridge access area

Remove any jammed paper from the ink cartridge access area.

Press the Cancel button to try and automatically clear the paper jam.

If the paper jam error persists, continue these steps to manually clear the jam.
Press the Power button to turn off the printer.
Disconnect the USB cable from the rear of the printer, if it is not already disconnected.
Disconnect the power cord from the rear of the printer.

warning:
You must disconnect the power cord before reaching inside the printer to avoid risk of injuries or electric shock.
Close the output tray extender, and then push the output tray into the printer.
Open the exterior door.
Open the ink cartridge access door.
If the print carriage is in the center of the printer, gently slide it to the right.
Gently remove any jammed paper from inside the printer.
Close the ink cartridge access door.
Close the exterior door.
Pull out the output tray and tray extender.
Connect the power cord to the rear of the printer.
Connect the USB cable to the rear of the printer if necessary.
Press the Power button to turn on the printer.

Try to print. If the error persists, check for jammed paper in another area of the printer.

Clear jammed paper from underneath the printer

Remove any jammed paper from underneath the printer.

Press the Cancel button to try and automatically clear the paper jam.

If the paper jam error persists, continue these steps to manually clear the jam.
Press the Power button to turn off the printer.
Disconnect the USB cable and power cord from the rear of the printer.
Lower the paper input tray back into the printer, close the output tray extender, and then push the output paper tray into the printer.
Turn the printer so that you can access its underside (base).

caution:
Before turning the printer, use your hands to hold the scanner lid and the paper input tray.
Pull the tabs on either side of the cleanout door to open it.
Gently remove any jammed paper from inside the printer.
Close the cleanout door. Gently push the door forward until it snaps into place.
Turn the printer over to its normal position.
Open the ink cartridge access door, and then look inside the printer for any loose objects that might have shifted when the printer was turned over. Remove any loose objects found.
Close the ink cartridge access door.
Reconnect the power cord to the rear of the printer.
Reconnect the USB cable if necessary.
Press the Power button to turn on the printer.

Try to print. If the error persists, check for jammed paper in another area of the printer.

If you have checked and removed any jammed paper from each printer area and the error persists, continue to the next step.

Step 2: Remove and then reinstall the ink cartridges

Improper placement or installation of the ink cartridges might cause the printer to indicate a carriage jam error. To make sure the ink cartridges are installed correctly, remove and reinstall the ink cartridges, and then try to print again.

Press the Power button to turn on the printer, if it is not already on.
Open the exterior door.

Figure : Open the exterior door
Open the ink cartridge access door.

The ink cartridge carriage moves to the center of the printer. Wait until the carriage is idle and silent before you continue.

Figure : Open the ink cartridge access door
Lightly press down on each ink cartridge to release it.

Figure : Press down on each ink cartridge
Pull each ink cartridge toward you out of its slot.

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.

Figure : Do not touch the contacts or nozzles
Slide each ink cartridge at a slight upward angle into the empty slot, and then gently push up on each ink cartridge until it snaps into place.

Figure : Push the ink cartridge into its slot
Close the ink cartridge access door.

Figure : Close the ink cartridge access door
Close the exterior door.

Figure : Close the exterior door

Try to print. If the error persists, continue to the next step.

Step 3: Plug the printer directly into a wall outlet

Disconnect the power cord from the rear of the printer.
Unplug the power cord from any power strips or surge suppressors.
Plug the power cord directly into an electrical outlet.
Reconnect the power cord to the rear of the printer.
Turn on the printer.

Try to print. If the error persists, continue to the next step.

Step 4: Reset the printer

Resetting the printer can clear carriage jam errors.

With the printer turned on, disconnect the power cord from the printer.
Unplug the power cord from the power source.
Wait 60 seconds.
Reconnect the power cord to a wall outlet and to the printer.

note:
HP recommends plugging the printer directly into a wall outlet.

Try to print. If the error persists, continue to the next step.

Step 5: Service the printer

If you have completed all the previous steps and the issue persists, continue to the Service the printer section at the end of this document.

The Number of Copies icon alternates between 'E' and '6,' and all the lights are blinking

An E6 error occurs when the printer is in an error state.

Figure : Number of Copies icon alternates between 'E' and '6,' and all the lights are blinking

Step 1: Reset the printer

Resetting the printer can clear the error state.

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 2: Plug the printer directly into an electrical outlet

Plug the product directly into an electrical outlet to make sure that the power source functions correctly.

Disconnect the power cord from the rear of the product.
Unplug the power cord from any power strips or surge suppressors.
Plug the power cord directly into an electrical outlet.
Reconnect the power cord to the rear of the product.
Press the Power button () to turn on the product.
Try the task again.

If the issue persists, try a different electrical outlet.

Step 3: Service the printer

If you have completed all the previous steps and the issue persists, continue to the Service the printer section at the end of this document.

One or both ink level icons are blinking with no segment, the Ink Alert light is on

This condition occurs when one or both of the ink cartridges needs attention or is faulty, incorrect, missing, damaged, or incompatible.

Figure : One ink level icon blinking and Ink Alert light on

Image: Ink cartridge error, one cartridge

Figure : Both ink level icons blinking and Ink Alert light on

Image: Ink cartridge error, both cartridges

Step 1: Make sure the ink cartridges are compatible

Before you begin, make sure the ink cartridges are compatible with your printer.

Deskjet 3630 printers

Ink cartridge description	North America, Asia Pacific (excluding China, India, and Indonesia)	Western Europe	Africa, CIS, Latin America, and Middle East	China, India, and Indonesia
Black ink cartridge	HP 63 Black HP 63XL Black	HP 302 Black HP 302XL Black	HP 123 Black HP 123XL Black	HP 803 Black HP 803XL Black
Color ink cartridge	HP 63 Tri-color HP 63XL Tri-color	HP 302 Tri-color HP 302XL Tri-color	HP 123 Tri-color HP 123XL Tri-color	HP 803 Tri-color HP 803XL Tri-color

Deskjet Ink Advantage 3630 printers

Ink cartridge description	Latin America	Asia Pacific	Europe, Middle East, and Africa
Black ink cartridge	HP 664 Black HP 664XL Black	HP 680 Black	HP 652 Black
Color ink cartridge	HP 664 Tri-color HP 664XL Tri-color	HP 680 Tri-color	HP 652 Tri-color

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

If the ink cartridges are compatible, continue with the steps in this document.
If the ink cartridges are not compatible, continue to the step to replace the ink cartridge.

Step 2: Remove, inspect, and then reseat the ink cartridges

The printer might display an error if the ink cartridges are not correctly installed.

note:
HP cannot guarantee the quality of remanufactured or refilled ink cartridges. Use genuine HP ink cartridges for good print quality.

If the printer is off, press the Power button to turn on the printer.
Open the exterior door.

Figure : Open the exterior door
Open the ink cartridge access door.

The carriage moves to the center of the printer. Wait until the carriage is idle and silent before continuing.

Figure : Open the ink cartridge access door
Press down on the ink cartridge to release it, and then pull the ink cartridge out to remove it from its slot.

Figure : Remove the ink cartridge

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.
Remove any protective tape that still might be on the nozzles.

caution:
Do not try to remove the copper electrical strip.

Figure : Remove the plastic tape
Hold the ink cartridge by its sides with the nozzles toward the printer, and then insert the ink cartridge into its slot. Make sure that the ink cartridge is inserted in the correct slot.
- The tri-color ink cartridge () goes in the slot on the left.
- The black ink cartridge () goes in the slot on the right.
Figure : Reinsert the ink cartridge
Push the ink cartridge forward into its slot until it snaps into place.
Repeat these steps to replace the other ink cartridge, if necessary.
Close the ink cartridge access door.

Figure : Close the ink cartridge access door
Close the exterior door.

Figure : Close the exterior door

If the error persists, continue to the next step.

Step 3: Clean the ink cartridge contacts

The printer might display an ink cartridge error if the ink cartridge contacts are dirty.

caution:
Clean the ink cartridges one at a time. Do not leave an ink cartridge outside the printer for more than 30 minutes.

Gather the following materials:
- Dry foam-rubber swabs, lint-free cloth, or any soft material that does not come apart or leave fibers (coffee filters work well)
- Distilled, filtered, or bottled water (tap water might contain contaminants that can damage the ink cartridges)
  
  caution:
  Do not use platen cleaners or alcohol to clean the ink cartridge contacts. These can damage the ink cartridge or the printer.
Press the Power button to turn on the printer.
Open the exterior door.

Figure : Open the exterior door
Open the ink cartridge access door.

The carriage moves to the center of the printer. Wait until the carriage is idle and silent before continuing.

Figure : Open the ink cartridge access door
Disconnect the power cord from the rear of the printer.
Disconnect the USB cable, unless your printer is connected to a wireless network.
Press down on the ink cartridge to release it, and then pull the ink cartridge out to remove it from its slot.

Figure : Remove the ink cartridge

caution:
Do not remove both ink cartridges at the same time. Remove and then clean each ink cartridge one at a time. Do not leave an ink cartridge outside the printer for more than 30 minutes.
Hold the ink cartridge by its sides.

Figure : Hold the ink cartridge by its sides
Inspect the contacts for ink and debris buildup.
Wipe the contacts with a dry swab or other lint-free material until no debris remains on them.

caution:
Be careful to wipe only the contacts. Do not smear any ink or debris elsewhere on the ink cartridge.
Dip a clean foam-rubber swab or lint-free cloth into distilled water, and then squeeze any excess water from it.
Clean only the copper-colored contacts, and then allow the ink cartridge to dry for approximately 10 minutes.

Figure : Clean the contacts
Lightly moisten another foam-rubber swab with distilled water, and then squeeze any excess water from the swab.
Use the swab to clean the electrical contacts in the carriage, located inside the printer.
Clean the contacts in the carriage.

Figure : The carriage contacts
Either let the ink cartridge sit for 10 minutes to allow the cleaned area to dry, or use a new swab to dry it.

note:
Make sure that the ink cartridge is not left out of the printer for more than 30 minutes.
Hold the ink cartridge by its sides with the nozzles toward the printer, and then insert the ink cartridge into its slot. Make sure that the ink cartridge is inserted in the correct slot.

Figure : Insert the ink cartridge into the slot
Push the ink cartridge forward into its slot until it snaps into place.
Repeat these steps to clean and then reinsert the other ink cartridge.
Close the ink cartridge access door.

Figure : Close the ink cartridge access door
Close the exterior door.

Figure : Close the exterior door
Reconnect the power cord to the rear of the printer.
Reconnect the USB cable, unless your printer is connected to a wireless network.
Press the Power button to turn on the printer if it does not turn on automatically.

If the error persists, continue to the next step.

Step 4: Remove and then reinsert the ink cartridges again

Repeat the steps that you performed earlier in this document to remove and then reinsert the ink cartridges.

note:
Make sure the ink cartridges snap firmly into place.

If the error persists, continue to the next step.

Step 5: Clean the ink cartridge contacts again

Cleaning the ink cartridge contacts again can help resolve the issue. Repeat the steps that you performed earlier in this document to clean the contacts of the ink cartridges.

If the error persists, continue to the next step.

Step 6: Restart the printer

Restarting the printer can sometimes resolve an ink cartridge error.

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 7: Replace the ink cartridge

Replace the ink cartridge or ink cartridges indicated by the blinking Ink Level icon (

If you have a defective cartridge or printhead, it might be under warranty. To check the warranty on your ink or toner supplies, go to Printer and Page Yield Overview, and then review the limited warranty information for your supplies.

Press the Power button to turn on the printer, if it is not already on.
Load plain white paper into the input tray.
Open the exterior door.

Figure : Open the exterior door
Open the ink cartridge access door.

The carriage moves to the center of the printer.

Wait until the carriage is idle and silent before you continue.

Figure : Open the ink cartridge access door
Lightly press down on the ink cartridge to release it, and then pull the ink cartridge out of its slot.

Figure : Remove the ink cartridge
Remove the new ink cartridge from its packaging, and then remove the plastic tape.

caution:
Do not try to remove the copper electrical strip.

Do not touch the copper-colored contacts or the ink nozzles.Do not replace the protective tape on the contacts. Handling these parts can result in clogs, ink failure, and bad electricalconnections.

Figure : Remove the plastic tape
Hold the ink cartridge by its sides with the nozzles toward the printer, and then insert the ink cartridge into its slot. Make sure that the ink cartridge is inserted in the correct slot.
- The tri-color ink cartridge () goes in the slot on the left.
- The black ink cartridge () goes in the slot on the right.
Push the ink cartridge forward into its slot until it snaps into place.

Figure : Snap the ink cartridge into place
Repeat these steps to replace the other ink cartridge, if necessary.
Close the ink cartridge access door.

Figure : Close the ink cartridge access door
Close the exterior door.

Figure : Close the exterior door
Follow any prompts on the computer screen.
Wait about 30 seconds for the alignment page to automatically print.

note:
The printer prints an alignment page automatically only when a new ink cartridge has been installed.

Continue to the next step to complete the ink cartridge alignment.

Step 8: Align the ink cartridges

Scanning the alignment page allows the printer to align the ink cartridges and provides the best print quality.

Lift the scanner lid.
Place the alignment page with the print side down on the right-front corner of the scanner glass. See the engraved guide next to the scanner glass for help loading the alignment page.
Close the scanner lid.
Press the Start Copy Black button or the Start Copy Color button on the printer control panel.

The printer aligns the ink cartridges.

note:
If the alignment page fails to automatically print, you can manually print an alignment page using the HP Printer Assistant software (Windows) or the Printer Utility (macOS or OS X).

If the error persists, continue to the next step.

Step 9: Service the printer

If you have completed all the previous steps and the issue persists, continue to the Service the printer section at the end of this document.

One or both ink level icons are blinking with no segment, the Ink Alert light is on, and the Resume light is blinking

This condition occurs when one or both of the ink cartridges is incompatible, or the ink levels are low.

Figure : One ink level icon blinking, Ink Alert light on, and Resume light blinking

Figure : Both ink level icons blinking, Ink Alert light on, and Resume light blinking

Step 1: Make sure the ink cartridges are compatible

Before you begin, make sure the ink cartridges are compatible with your printer.

Deskjet 3630 printers

Ink cartridge description	North America, Asia Pacific (excluding China, India, and Indonesia)	Western Europe	Africa, CIS, Latin America, and Middle East	China, India, and Indonesia
Black ink cartridge	HP 63 Black HP 63XL Black	HP 302 Black HP 302XL Black	HP 123 Black HP 123XL Black	HP 803 Black HP 803XL Black
Color ink cartridge	HP 63 Tri-color HP 63XL Tri-color	HP 302 Tri-color HP 302XL Tri-color	HP 123 Tri-color HP 123XL Tri-color	HP 803 Tri-color HP 803XL Tri-color

Deskjet Ink Advantage 3630 printers

Ink cartridge description	Latin America	Asia Pacific	Europe, Middle East, and Africa
Black ink cartridge	HP 664 Black HP 664XL Black	HP 680 Black	HP 652 Black
Color ink cartridge	HP 664 Tri-color HP 664XL Tri-color	HP 680 Tri-color	HP 652 Tri-color

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

If the ink cartridges are compatible, continue with the steps in this document.
If the ink cartridges are not compatible, continue to the step to replace the ink cartridge.

Step 2: Remove, inspect, and then reseat the ink cartridges

The printer might display an error if the ink cartridges are not correctly installed.

note:
HP cannot guarantee the quality of remanufactured or refilled ink cartridges. Use genuine HP ink cartridges for good print quality.

If the printer is off, press the Power button to turn on the printer.
Open the exterior door.

Figure : Open the exterior door
Open the ink cartridge access door.

The carriage moves to the center of the printer. Wait until the carriage is idle and silent before continuing.

Figure : Open the ink cartridge access door
Press down on the ink cartridge to release it, and then pull the ink cartridge out to remove it from its slot.

Figure : Remove the ink cartridge

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.
Remove any protective tape that still might be on the nozzles.

caution:
Do not try to remove the copper electrical strip.

Figure : Remove the plastic tape
Hold the ink cartridge by its sides with the nozzles toward the printer, and then insert the ink cartridge into its slot. Make sure that the ink cartridge is inserted in the correct slot.
- The tri-color ink cartridge () goes in the slot on the left.
- The black ink cartridge () goes in the slot on the right.
Figure : Reinsert the ink cartridge
Push the ink cartridge forward into its slot until it snaps into place.
Repeat these steps to replace the other ink cartridge, if necessary.
Close the ink cartridge access door.

Figure : Close the ink cartridge access door
Close the exterior door.

Figure : Close the exterior door

If the error persists, continue to the next step.

Step 3: Replace low or empty ink cartridges

Replace the ink cartridge or ink cartridges indicated by the blinking Ink Level icon (

Press the Power button to turn on the printer, if it is not already on.
Load plain white paper into the input tray.
Open the exterior door.

Figure : Open the exterior door
Open the ink cartridge access door.

The carriage moves to the center of the printer.

Wait until the carriage is idle and silent before you continue.

Figure : Open the ink cartridge access door
Lightly press down on the ink cartridge to release it, and then pull the ink cartridge out of its slot.

Figure : Remove the ink cartridge
Remove the new ink cartridge from its packaging, and then remove the plastic tape.

caution:
Do not try to remove the copper electrical strip.

Do not touch the copper-colored contacts or the ink nozzles.Do not replace the protective tape on the contacts. Handling these parts can result in clogs, ink failure, and bad electricalconnections.

Figure : Remove the plastic tape
Hold the ink cartridge by its sides with the nozzles toward the printer, and then insert the ink cartridge into its slot. Make sure that the ink cartridge is inserted in the correct slot.
- The tri-color ink cartridge () goes in the slot on the left.
- The black ink cartridge () goes in the slot on the right.
Push the ink cartridge forward into its slot until it snaps into place.

Figure : Snap the ink cartridge into place
Repeat these steps to replace the other ink cartridge, if necessary.
Close the ink cartridge access door.

Figure : Close the ink cartridge access door
Close the exterior door.

Figure : Close the exterior door
Follow any prompts on the computer screen.
Wait about 30 seconds for the alignment page to automatically print.

note:
The printer prints an alignment page automatically only when a new ink cartridge has been installed.

Continue to the next step to complete the ink cartridge alignment.

Step 4: Align the ink cartridges

Scanning the alignment page allows the printer to align the ink cartridges and provides the best print quality.

Lift the scanner lid.
Place the alignment page with the print side down on the right-front corner of the scanner glass. See the engraved guide next to the scanner glass for help loading the alignment page.
Close the scanner lid.
Press the Start Copy Black button or the Start Copy Color button on the printer control panel.

The printer aligns the ink cartridges.

note:
If the alignment page fails to automatically print, you can manually print an alignment page using the HP Printer Assistant software (Windows) or the Printer Utility (macOS or OS X).

If the error persists, continue to the next step.

Step 5: Service the printer

If you have completed all the previous steps and the issue persists, continue to the Service the printer section at the end of this document.

All the lights are off and the printer does not respond

This condition occurs when the printer is turned off, or there is an issue with the power supply.

Step 1: Turn on the printer

Press the Power button to turn on the printer.

If the printer does not turn on, continue to the next step.

Step 2: Make sure the printer is plugged in

Make sure the power cord is connected to the rear of the printer and plugged into an electrical outlet.

Check the rear of the printer to make sure the power cord is inserted securely into the power connection.
Check the electrical outlet to make sure the power cord is plugged in securely.
Figure : Check the electrical connections

Rear of printer

Electrical outlet
Press the Power button to turn on the printer.

If the printer does not turn on, continue to the next step.

Step 3: Plug the printer directly into a wall outlet

If you are using a surge protector, extension cable, or power strip, plug the printer directly into a wall outlet to make sure the power source functions correctly.

Unplug the power cord from any surge protector, extension cable, or power strip.
Plug the power cord directly into a wall outlet.
Press the Power button to turn on the printer.

Step 4: Make sure the electrical outlet works

Make sure the electrical outlet the printer is plugged into is providing power.

Unplug the power cord from the electrical outlet.
Plug another appliance into the electrical outlet to make sure the outlet works.

If the electrical outlet does not work, plug the printer into another outlet that does work.
If the electrical outlet works, but the printer still does not turn on, continue to the next step.

Step 5: Test the power with a compatible power cord from a different printer

If you have another available power cord that is compatible with your printer, use the alternate cord to repeat the steps in the solution to Reset the power module and test the power.

If these steps resolved the issue, you can stop troubleshooting.
If the printer turns on with the alternate power cord, the original power cord caused the issue. Contact HP to replace the power cord.

Click Contact Support on this page for more support options.

Step 6: Service the printer

If you have completed all the previous steps and the issue persists, 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.

HP DeskJet 3630, 4720 Printers - Blinking Lights

The Power light blinks fast

Step 1: Close the ink cartridge door

Step 2: Service the printer

The Wireless light is blinking, and the Wireless icon and Wireless Attention icon are on

Step 1: Wait for the printer to establish a connection

Step 2: Check for issues with the wireless network

Step 3: Connect the printer to your network

The HP ePrint light is blinking

The Wireless light is blinking, the Wireless icon is on, and the Wireless Attention icon is blinking

Step 1: Wait for the printer to establish a connection

Step 2: Check for issues with the wireless network

Step 3: Connect the printer to your network

The Number of Copies icon alternates between 'E' and '5', and all lights on the control panel are blinking

Step 1: Reset the printer

Step 2: Service the printer

The Number of Copies icon alternates between 'E' and '2'

Step 1: Load the correct paper size

Step 2: Change the paper size setting

Change the paper size setting in Windows

Change the paper size setting in OS X

Step 3: Service the printer

The Error icon, Paper Error icon, and the Resume light are on

The Number of Copies icon alternates between 'E' and '4,' and the Error icon, Paper Error icon, Resume light, and Ink Alert light are blinking

Step 1: Look for jammed paper

Clear jammed paper from the input tray

Clear jammed paper from the output tray

Clear jammed paper from the ink cartridge access area

Clear jammed paper from underneath the printer

Step 2: Make sure the ink cartridge carriage moves freely

Step 3: Use an automated tool to clean the paper rollers

Step 4: Use an automated tool to clean ink smears

Step 5: Manually clean the paper rollers inside the cartridge access area

Step 6: Reset the printer

Step 7: Service the printer

The Number of Copies icon alternates between 'E' and '3,' and the Resume light and Ink Alert light are blinking

Step 1: Look for jammed paper

Clear jammed paper from the input tray

Clear jammed paper from the output tray

Clear jammed paper from the ink cartridge access area

Clear jammed paper from underneath the printer

Step 2: Remove and then reinstall the ink cartridges

Step 3: Plug the printer directly into a wall outlet

Step 4: Reset the printer

Step 5: Service the printer

The Number of Copies icon alternates between 'E' and '6,' and all the lights are blinking

Step 1: Reset the printer

Step 2: Plug the printer directly into an electrical outlet

Step 3: Service the printer

One or both ink level icons are blinking with no segment, the Ink Alert light is on

Step 1: Make sure the ink cartridges are compatible

Step 2: Remove, inspect, and then reseat the ink cartridges

Step 3: Clean the ink cartridge contacts

Step 4: Remove and then reinsert the ink cartridges again

Step 5: Clean the ink cartridge contacts again

Step 6: Restart the printer

Step 7: Replace the ink cartridge

Step 8: Align the ink cartridges

Step 9: Service the printer

One or both ink level icons are blinking with no segment, the Ink Alert light is on, and the Resume light is blinking

Step 1: Make sure the ink cartridges are compatible

Step 2: Remove, inspect, and then reseat the ink cartridges

Step 3: Replace low or empty ink cartridges

Step 4: Align the ink cartridges

Step 5: Service the printer

All the lights are off and the printer does not respond

Step 1: Turn on the printer

Step 2: Make sure the printer is plugged in

Step 3: Plug the printer directly into a wall outlet

Step 4: Make sure the electrical outlet works

Step 5: Test the power with a compatible power cord from a different printer

Step 6: Service the printer

Service the printer

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