HP OfficeJet Pro 7730 User Guide - Page 148
Fix Ethernet connection, Printer hardware issues
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▲ From the printer control panel, touch or swipe down the tab at the top of the screen to open the Dashboard, and then touch (Wi-Fi Direct). 2. From your wireless computer or mobile device, turn on the Wi-Fi connection, and then search for and connect to the Wi-Fi Direct name of your printer. 3. Enter the Wi-Fi Direct password when prompted. 4. If you are using a mobile device, make sure you have installed a compatible printing app. For more information about mobile printing, visit www.hp.com/global/us/en/eprint/mobile_printing_apps.html. Fix Ethernet connection Check the following: ● The network is operational and the network hub, switch, or router is turned on. ● The Ethernet cable is properly connected between the printer and the router. The Ethernet cable is plugged into the Ethernet port on the printer and the light near the connector lights up when connected. ● Antivirus programs, including spyware protection programs, are not impacting your network connection to the printer. If you know that antivirus or firewall software is preventing your computer from connecting to the printer, use the HP online firewall troubleshooter to help solve the problem. ● HP Print and Scan Doctor Run the HP Print and Scan Doctor to troubleshoot the issue automatically. The utility will try to diagnose and fix the issue. The HP Print and Scan Doctor may not be available in all languages. Printer hardware issues TIP: Run the HP Print and Scan Doctor to diagnose and automatically fix printing issues. The application is only available in some languages. The printer shuts down unexpectedly ● Check the power and power connections. ● Make sure the printer's power cord is connected firmly to a functioning power outlet. Printhead alignment fails ● If the alignment process fails, make sure you have loaded unused, plain white paper into the input tray. If you have colored paper loaded in the input tray when you align the printhead, the alignment fails. ● If the alignment process fails repeatedly, you may need to clean the printhead, or you might have a defective sensor. To clean the printhead, see Maintain the printhead and cartridges. ● If cleaning the printhead does not solve the problem, contact HP support. Go to www.support.hp.com . This website provides information and utilities that can help you correct many common printer problems. If prompted, select your country/region, and then click All HP Contacts for information on calling for technical support. ENWW Printer hardware issues 135