Solution

•Make sure the HP All-in-One is connected to the port that is designated for fax and phone use. Also, make sure that the terminal adapter is set to the correct switch type for your country/region, if possible.

NOTE: Some ISDN systems allow you to configure the ports for specific phone equipment. For example, you might have assigned one port for telephone and Group 3 fax and another port for multiple purposes. If you have problems when connected to the fax/phone port of your ISDN converter, try using the port designated for multiple purposes; it might be labeled "multi-combi" or something similar.

For more information on how to set up the HP All-in-One with a PBX phone system or ISDN line, see “Case C: Set up the HP All-in-One with a PBX phone system or an ISDN line” on page 24.

•Try setting the Fax Speed to Medium (14400) or Slow (9600).

Cause: The Fax Speed setting is set too fast.

Solution: You might need to send and receive faxes at a slower rate. Try setting the Fax Speed to Medium (14400) or Slow (9600) if you use one of the following:

•An Internet phone service

•A PBX system

•Fax over Internet Protocol (FoIP)

•An ISDN service

Cause: The HP All-in-One might be connected to a telephone wall jack that is set up for digital phones.

Solution: Make sure you connect the HP All-in-One to an analog phone line or you will not be able to send or receive faxes. To check if your phone line is digital, connect a regular analog phone to the line and listen for a dial tone. If you do not hear a normal sounding dial tone, it might be a phone line set up for digital phones. Connect the HP All-in-One to an analog phone line and try sending or receiving a fax.

Cause: The HP All-in-One shares the same phone line with a DSL service and the DSL modem might not be properly grounded.

Solution: If the DSL modem is not properly grounded, it can create noise on the phone line. Phone lines with poor sound quality (noise) can cause faxing problems. You can check the sound quality of the phone line by plugging a phone into the telephone wall jack and listening for static or other noise.

If you hear noise

1.Turn off your DSL modem and completely remove power for at least 15 minutes.

2.Turn the DSL modem back on.

3.Listen to the dial tone again. If the dial tone sounds clear (no noise or static), try sending or receiving a fax.

NOTE: You might notice static on the phone line again in the future. If the HP All-in-One stops sending and receiving faxes, repeat this process.

If the phone line is still noisy, contact your phone company. For information on turning your DSL modem off, contact your DSL provider for support.

Cause: You are faxing over the Internet using an IP phone, and there was a problem with the transmission.

Solution: Try resending your fax at a later time. Also, make sure your Internet service provider supports faxing over the Internet.

Troubleshooting and support

Fax setup troubleshooting

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HP C7250, C7288, C7280 manual Try setting the Fax Speed to Medium 14400 or Slow, If you hear noise
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C7288, C7250, C7280 specifications

The HP C7280, C7250, and C7288 are part of HP's acclaimed All-in-One (AIO) printer series that blend functionality, speed, and quality in one compact device. Designed for home and small office use, these models stand out for their versatility and advanced features, making them an essential tool in any workspace.

One of the main features of the HP C7280, C7250, and C7288 is their multifunction capability. Each model combines printing, scanning, copying, and faxing, allowing users to perform various tasks without the need for multiple devices. This effective integration saves space and enhances productivity. The printers are equipped with a user-friendly control panel, simplifying navigation through different functions.

The print quality of these models is impressive, boasting a resolution that ensures sharp text and vibrant colors. The HP Vivera ink technology used in these printers plays a crucial role in delivering high-quality prints. This ink formulation provides a broader color gamut and enhanced longevity of prints, making them suitable for both professional documents and high-quality photos.

The HP C7280, C7250, and C7288 also feature built-in wireless connectivity options. Users can print from various devices, including smartphones, tablets, and laptops, making it possible to print from anywhere within range. This wireless technology offers flexibility and convenience, eliminating the clutter of cables in the workspace. Additionally, these models support HP’s ePrint feature, which allows printing via email, enabling users to send print jobs directly to the printer from any location.

Scanning and copying are facilitated by advanced optical scanning technology, which provides clear and precise results. Users can scan documents directly to a USB drive or email, streamlining sharing and archival processes. The automatic document feeder (ADF) featured in these models enhances efficiency, particularly for multi-page documents.

Durability is another characteristic of the HP C7280, C7250, and C7288. Designed for regular use, they come with a robust build quality and are engineered to handle large volumes of printing without frequent maintenance. The energy-efficient design of these printers also contributes to a lower environmental impact, aligning with modern sustainability practices.

In summary, the HP C7280, C7250, and C7288 series All-in-One printers excel in delivering multifunctionality, impressive print quality, and innovative technology. Their wireless capabilities, combined with user-friendly features and robust performance, make them a valuable addition to any home office or small business environment.
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