or receive faxes. After you plug in the phone cord that came with the printer, run the fax test again.

After you resolve any problems found, run the fax test again to make sure it passes and the printer is ready for faxing. If the Fax Line Condition test continues to fail and you experience problems faxing, contact your telephone company and have them check the phone line.

Troubleshoot fax problems.

Use an HP online troubleshooting wizard

Resolve problems sending or receiving a fax or faxing to your computer.

NOTE: The HP online troubleshooting wizards may not be available in all languages.

Read general instructions in the Help for specific fax problems

What kind of fax problem are you having?

The display always shows Phone Off Hook

●You are using the wrong type of phone cord. Make sure you are using the 2-wire phone cord that came with the printer to connect the printer to your phone line. If the phone cord that came with the printer is not long enough, you can use a longer phone cord to extend the length. You can purchase the cord at an electronics store that carries phone accessories.

●Other equipment that uses the same phone line as the printer might be in use. Make sure extension phones (phones on the same phone line, but not connected to the printer) or other equipment are not in use or off the hook. For example, you cannot use the printer for faxing if an extension phone is off the hook, or if you are using a computer dial-up modem to send email or access the Internet.

The printer is having problems sending and receiving faxes

●Make sure the printer is turned on. Look at the display on the printer. If the display is blank and (the Power button) light is not lit, the printer is turned off. Make sure the power cord is firmly

connected to the printer and plugged into a power outlet. Press (the Power button) to turn on the printer.

After turning on the printer, HP recommends you wait five minutes before sending or receiving a fax. The printer cannot send or receive faxes while it is initializing after being turned on.

●If HP Digital Fax has been enabled, you might not be able to send or receive faxes if the fax memory is full (limited by printer memory).

116 Chapter 9 Solve a problem

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HP 7645 manual Troubleshoot fax problems, Display always shows Phone Off Hook
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7645 specifications

The HP 7640 and 7645 are part of HP's formidable line of wide-format printers designed for businesses that require high-quality printing for posters, brochures, and technical documents. Built with reliability and efficiency in mind, these printers offer advanced features and technologies that cater to diverse printing needs.

One of the standout features of the HP 7640 and 7645 is their exceptional print quality. These printers utilize HP's thermal inkjet technology, which ensures crisp, clear results with vibrant colors and sharp text. The printers support a wide color gamut and are capable of producing high-resolution prints, making them ideal for graphic-intensive applications. The versatile media handling allows users to print on various substrates, from plain paper to glossy photo paper and even heavyweight posters.

Both models support wide-format printing, with maximum print sizes up to 44 inches wide. This makes them perfect for businesses in industries such as architecture, engineering, and advertising. The HP 7640 and 7645 can print on sheets or rolls, providing users with the flexibility to handle large print jobs efficiently.

Another significant feature is the HP Smart App integration, which allows users to print and manage their printing tasks through smartphones and tablets. This capability enhances productivity, enabling users to take control of their printing needs remotely. Additionally, both printers come with intuitive touch-screen interfaces that simplify operation and provide real-time insights into printer status and supplies.

In terms of connectivity, the HP 7640 and 7645 boast versatile options, including USB, Ethernet, and wireless connectivity. This makes it easy to integrate the printers into existing office networks, enabling multiple users to access the printer from various devices. Cloud printing support further enhances operational convenience, allowing users to print documents from their preferred applications without the need for intermediate downloads.

The construction of the HP 7640 and 7645 emphasizes durability and low maintenance. With features designed to minimize downtime, these printers are engineered for consistent performance, making them suitable for high-demand environments. Their environmentally friendly design, including energy-efficient operating modes and recyclable cartridges, aligns with modern sustainability practices.

In summary, the HP 7640 and 7645 printers are packed with cutting-edge technology and practical features that meet the diverse demands of today’s business landscape. With superior print quality, wide-format capabilities, and user-friendly technology, they provide a reliable solution for high-quality printing requirements.
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