Open the HP DeskJet 3720 Printer by unboxing and removing all the packing materials to start the installation without the help of installation CD. The accessories in the package may vary by country/region. Compare the listed items and available items in the package. Make sure both are same. Follow the instructions to setup the printer for the first time that too without the help of a CD drive
1. Comparing the contents
As mentioned earlier, the first and foremost step is to check the contents that are available in the packaging box and comparing it with the items listed in the box. If both the contents in the box and listed items are same, you can move on to the next step. Otherwise report it to the HP Printer support
2. Remove the printer
After checking the contents you have to unpack them carefully. First take the printer from the box and slowly remove the sticker, tapes and cardboard in the printer. The packing materials are inside the printer also. Remove that too by opening the cartridge access door and use the printer. After removing the printer , close the cartridge access door. Recycle the packing materials
3. Power cord settings
There will be a sticker in the control panel looking like an active control panel. Remove the sticker from the printer before proceeding to the next step. The power cord has two ends. One end of the power cord should be plugged into the rear of the printer and other end should be plugged into the electrical outlet. Now switch on the printer by pressing the power button in the top of the printer.
4. Paper loading
To start printing, you have to load the input tray with stack of papers. You have to raise the input tray and lower it. Then pull the tray extender as far as possible. The paper width glide should be slide in and it is kept in a way that they rest against the edges of the paper.
5. Cartridge installation
To install the cartridges, open the cartridge access door. The carriage will move to the center of the printer. You have to wait until the printer remains silent. After the printer become idle, remove the new cartridge from the package. Remove the plastic tape by pulling the orange tab.
You are not allowed to touch the copper-colored contact or the ink nozzles. If you touch these parts, it may lead to clogs, ink failure and bad electrical connections.
You have to remove the plastic tape and hold the cartridges by its sides with nozzles towards the printer.
The tri-color cartridge should be placed in the left slot and black cartridge should be placed on the right slot. After placing the cartridge forward into its slot until it snaps into place. You can use the above steps to install other cartridges.
6. Cartridge alignment
Open the scanner lid and place the alignment page with the print side down on the right-front corner of the scanner glass. Close the scanner lid. Press the Start Copy Black button or the Start Copy Color button on the front panel of the printer. The printer will align the cartridges.
7. Software installation
You have successfully setup the HP printer hardware. Now its time to download and install the printer software. The printer should not be connected to the computer until you are asked to do so by the on-screen prompt. To download the latest version of you printing software, visit http://123.hp.com/DJ3720 and install the most current version.