Quick 123.hp.com/ojpro8640 Printer Support


Step 1: The 123.hp.com/ojpro8640 printer supports wired (Ethernet) and also the wireless connectivity. It also supports USB and wireless direct feature. It can easily and quickly print from your SmartPhone. It supports both the ePrint and the AirPrint feature.

Step 2: It quickly prints documents at greater speed with good quality. It is also capable of scanning, copying and even sharing of documents quickly. It is a multi functional printer that can print, scan, copy, and fax. It also supports duplex printing.

Step 3: It produces a good quality print with low running cost. It best suits a home or small office. It is created with an automatic document feeder. You can easily access the HP Officejet Pro 8640 Printer, with an LCD touchscreen control panel.

Step 4: The printer USB cable provides FAST data transfer and using the high-quality USB 2.0 cable, you can connect a device to your computer USB port. It prints at a resolution up to 1200 dpi with pigmented black ink for black.

Step 5: It is created with Drop-on-demand thermal inkjet printing method. It can print at a speed up to 35 ppm for the draft and up to 15 ppm for ISO black. I can print at a speed up to 34 ppm for the color draft.

How to do 123.hp.com/ojpro8640 Printer Setup?

HP 8640 Printer Driver Download

The latest drivers for your printer is available on our website. Click the displayed link and then download the driver to your printer. After downloading, follow the steps that are given below accordingly and install the driver for your printer.

Step 1: When you click the displayed link, you will be directed to the driver download page and select the best driver for your printer from there and then click the “Download” button to download it and then turn on the computer.

Step 2: Then, you have to check if any of the USB cable is connected to your printer and the computer. If it is connected, then immediately remove the cable and do not connect it back unless it prompts you to connect it.

Step 3: Now, take out the CD that shipped with the 123.hp.com/ojpro8640 printer and insert it into the CD drive of your computer. When you insert the CD it will ask you to begin the “Installation Wizard” process. So, begin the process.

Step 4: Now, you will be guided with the set of instructions displayed on the screen to be followed and in the middle of the process if it prompts you to connect the USB cable to the computer and the printer, connect it.

Step 5: After connecting, it will recognise your printer and then follow the displayed instructions on the wizard and complete the driver installation process for your printer. Then, you can do all the printing related tasks easily.


Before setting up the printer on a wireless network, you should connect the printer to the network and then install the printer driver and software. During the installation, if prompted, select “Wireless” as the connection type.

Step 1: To setup the printer on wireless, you must gather the details of the network name and network password, and also check if your computer is connected to your wireless network. Check if the router and the computer are turned on. Also, ensure the computer is connected to the same wireless network to which you are wishing to connect your printer.

Step 2: Switch on the printer and have it close to the computer and within range of the router. Check if any USB or Ethernet cables are connected to the printer and remove them from the printer. Now, to connect the printer to the wireless network and to manage the wireless connection to your printer, you can use the “Wireless Setup Wizard”.

Step 3: For using that, you should first click the “Wireless” icon on the printer control panel and then you have to choose the “Wireless Menu” icon. Then you have to select the “Wireless Settings” icon. Then you have to select the “Wireless Setup Wizard” option. Now, the printer will start or begin to search for all the available wireless networks.

Step 4: Now, when it asks to choose the name of your wireless network, you have to choose your wireless network name and then you will be guided with the set of instructions on the control panel screen. Follow the instructions that are displayed on the control panel screen to connect the HP OfficeJet Pro 8640 printer to your wireless network.

Step 5: Once you finish all the instructions on the control panel screen, the printer is connected to your wireless network. Now, you have to download and install the latest version software for your 123.hp.com/ojpro8640 printer to complete the wireless network connection setup. You can get and download the software easily for your printer from our website.


You can refill the ink cartridges or the ink tanks easily when they go low or empty, by following the step by step procedure that is given below accordingly.

Step 1: First you have to open the ink tank lid. Then you have to remove the plug from the ink tank that you are going to refill. Sometimes there might be some ink present on the underside of the plug. To prevent the ink transfer, you have to keep the plug upright.

Step 2: Now, you have to take the HP Officejet Pro 8640 Printer ink bottle and slowly you should remove or take-off the cap from it. Then you have to pull the seal tab off from the ink bottle and have to replace the cap to it. Then you need to flip open the lid of the ink bottle.

Step 3: Now, you need to hold the ink bottle on the tank spout. Then, you have to gently push it down, and allow the ink to drain into the ink tank. You must then fill the ink tank and remember it should be filled just below the maximum fill line on the tank.

Step 4: If the bottle does not start or begin to drain by itself, then you have to remove and then you should reinsert the bottle onto the tank spout. Also, remember you should not try to squeeze the bottle and also you should not attempt to overfill the ink tank.

Step 5: Now, when the ink tank is completely filled with the ink from the ink bottle, you have to pull the ink bottle straight up. Then, you have to close the ink bottle lid and set the bottle upright. After that, you need to push the ink tank plug into its slot.

Step 6: Also, you have to make sure whether the ink tank plugs are secure and whether they are pressed firmly into their respective places. If you want to refill any other ink tanks that are low or empty in your printer, then you can repeat the same process as you did for the first one.

Step 7: Follow the above step by step procedure accordingly and when the ink tanks that are low or empty are completely filled below the maximum fill line on the tank using the ink bottle, you can close the ink tank lid. So the ink tanks are now ready.

Step 8: Once you are done with refilling the ink tanks with the ink bottle, then you can perform all the tasks related to printing, scanning, copying and everything that you want to do from your 123.hp.com/ojpro8640 printer. You can easily perform tasks without any error occurrence.


Follow the step by step instructions that are given below accordingly to setup the printer to send and receive a fax.

Step 1: Before you connect your fax service, you should ensure that the hardware has been fully set up and then you have to identify the type of telephone system you are using. You have either serial or parallel telephone system based on your country/region.

Step 2: Now, you have to setup the fax and you can use the phone cord and any adapters to connect the printer to the phone jack so that you can be able to fax successfully. You need to identify the phone connection type.

Step 3: Then you should set up the printer to send and receive faxes. Based on the equipment and services you have installed on your phone system, you can use the method to set up the fax on your printer.

Step 4: Then setup the printer to send and receive faxes, and for that, you need to select your connection type. To set the fax volume, click “Setup -> Fax Setup -> Basic Fax Setup -> Fax Sound Volume -> Soft, Loud, or Off. Then select “Home”.

Step 5: To setup the fax header, click “Setup”, then click “Fax Setup”. Click “Basic Fax Setup”, then tap “Fax Header”. Type your personal name and fax number, and click “Done”. Then select “Home” and then run a fax test.

How to Troubleshoot HP OJ PRO 8640 Printer?

  • Step 1: All the issues related to the 123.hp.com/ojpro8640 printer can be easily solved using the printer manual. You can get the latest printer manual from our website, click the displayed link and then download the recent version manual.
  • Step 2: This manual includes all the solutions to the technical problems related to the printer. If you have any print related issues or problems, then you can also use the Print and Scan doctor tool to diagnose and resolve the issue.
  • Step 3: Also, for all the common issues or problems that are arising related to the printer, can be solved by resetting the printer. This can actually resolve many issues quickly. The most common issue that arises is, printer going offline.
  • Step 4: To solve this error, try to update the firmware, set the default printer, unpause printing, reset the printer and check the connection status. Also, try to add the HP Officejet Pro 8640 Printer using the HP Printer Assistant to resolve the error.
  • Step 5: If the error occurs while scanning, then ensure the issue is not related to printing and then try to reset the printer. If the error is still there, clean the scanner and ADF rollers. Now, check if the scanning issue is solved.