Ink cartridge issues

First try removing and reinserting the ink cartridges. Make sure the cartridges are in the correct slots. If this does not work, clean the cartridge contacts. If your problem is still not resolved, see Replace the cartridges on page 75 for more information.

To clean cartridge contacts

CAUTION: The cleaning procedure should take only a few minutes. Make sure that the ink cartridges are reinstalled in the product as soon as possible. It is not recommended to leave the ink cartridges outside of the product longer than 30 minutes. This could result in damage to the ink cartridges.

1.Check that power is on.

2.Open the cartridge access door.

3.Remove the cartridge indicated in the error message.

4.Hold the ink cartridge by its sides with the bottom pointing up and locate the electrical contacts on the ink cartridge. The electrical contacts are the small gold-colored dots on the ink cartridge.

Feature

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Description

Electrical contacts

5.Wipe only the contacts with a damp lint-free cloth.

CAUTION: Be careful to touch only the contacts, and do not smear any of the ink or other debris elsewhere on the cartridge.

6.On the inside of the printer, locate the contacts in the print carriage. The contacts look like a set of gold-colored bumps positioned to meet the contacts on the ink cartridge.

7.Use a dry swab or lint-free cloth to wipe the contacts.

8.Reinstall the ink cartridge.

ENWW

Ink cartridge issues 99

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HP 7645 manual Ink cartridge issues, To clean cartridge contacts

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.

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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.