HP 5520 - Manual (Page 45)

Ink cartridge problem
To solve ink cartridge problem
1. Try removing and reinserting the cartridges. Make sure the cartridges are in the correct slots.
2. If reinserting the cartridges does not work, try cleaning cartridge contacts.
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 both the printhead and the ink
cartridges.
a. Check that power is on.
b. Open the cartridge access door.
Wait for the print carriage to move to the ink label part of the product.
c. Press tab on the cartridge indicated in the error message, then remove it from slot.
d. 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 four small rectangles of copper or gold-colored metal on the bottom of the ink
cartridge.
Ink cartridge problem 43
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