Chapter 12

Cause: Auto Answer is turned off, which means that the HP All-in-One will not answer incoming calls. You must be available to respond in person to incoming fax calls, or the HP All-in-One will not answer the incoming fax call.

Solution: Depending on your office setup, you might be able to set the HP All-in- One to answer incoming calls automatically. To find out what the recommended answer mode is for your office setup, see Choose the recommended answer mode for your setup.

If you must have Auto Answer off, you will need to press Start Fax Black or Start Fax Color to receive a fax.

TIP: If you are not close enough to the HP All-in-One to reach the control panel, wait several seconds, and then press 1 2 3 on your phone. If the HP All-in-One does not begin receiving the fax, wait several more seconds and press 1 2 3 again. After the HP All-in-One begins to receive the fax, you can hang up the phone.

Cause: You subscribe to a voice mail service at the same phone number you use for fax calls.

Solution: Set the HP All-in-One to answer faxes manually. You cannot receive faxes automatically if you have a voice mail service at the same phone number you use for fax calls. You must receive faxes manually; this means you must be available to respond in person to incoming fax calls.

For more information on how to set up the HP All-in-One when you have a voice mail service, see Set up the HP All-in-One for faxing.

Cause: You have a computer dial-up modem on the same phone line as the HP All- in-One.

Solution: If you have a computer dial-up modem on the same phone line as the HP All-in-One, check to make sure that the software that came with your modem is not set to receive faxes automatically. Modems that are set up to receive faxes automatically take over the phone line to receive all incoming faxes, which prevents the HP All-in-One from receiving fax calls.

Cause: If you have an answering machine on the same phone line with the HP All- in-One, you might have one of the following problems:

Your outgoing message might be too long or too loud to allow the HP All-in-One to detect fax tones, and the sending fax machine might disconnect.

Your answering machine might not have enough quiet time after your outgoing message to allow the HP All-in-One to detect fax tones. This problem is most common with digital answering machines.

188 Troubleshooting

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HP J5750, J5788, J5780, J5740 manual Chapter

J5788, J5740, J5780, J5750 specifications

The HP J5780 is a versatile all-in-one inkjet printer that combines printing, scanning, copying, and faxing capabilities in a single device. Ideal for home and small office environments, this printer is designed to cater to a wide range of document-related needs. Its compact form factor allows it to fit easily into tight spaces without sacrificing functionality.

One of the standout features of the HP J5780 is its print quality. With a maximum resolution of up to 4800 x 1200 optimized dpi, it delivers sharp text and vibrant images, making it suitable for printing everything from documents to photos. The printer uses HP's patented Thermal Inkjet Technology, which ensures precise ink placement and excellent color accuracy.

In terms of print speed, the HP J5780 is efficient, capable of printing up to 30 pages per minute for black and white documents and around 23 pages per minute for color prints. This speed makes it particularly effective in busy office environments where time is of the essence. The device has a 100-sheet paper tray that accommodates various paper sizes and types, including envelopes, glossy photo paper, and legal-sized documents.

The scanner function offers a flatbed design with a 1200 x 2400 dpi optical resolution, enabling users to digitize documents and photos with exceptional clarity. Additionally, the HP J5780 comes with a built-in copier that allows for quick duplication of documents without needing a computer. Users can efficiently make multiple copies, adjust copy sizes, and utilize features like resizing and reduction.

Another important aspect of the HP J5780 is its faxing capability. Featuring a 33.6 Kbps modem, the printer enables quick transmission of documents and comes with a 20-page automatic document feeder (ADF), simplifying the process of sending multi-page faxes.

Connectivity options on the HP J5780 are user-friendly, offering both USB and Ethernet interfaces. This allows for easy connection to computers and networks, enabling users to share the printer within a group. Furthermore, the device is compatible with various operating systems, ensuring seamless integration into different computing environments.

In summary, the HP J5780 is a comprehensive all-in-one solution that emphasizes productivity without compromising quality. Its combination of printing, scanning, copying, and faxing functionalities, along with its user-friendly features, makes it a reliable choice for those seeking efficiency and versatility in their document management tasks. Whether for home use or small office settings, the HP J5780 delivers dependable performance and a range of technologies designed to meet diverse printing needs.