Hp Designjet 4520 Printer series User Manual download pdf (Page 207)

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There is some risk of damaging the printer. In this case the printer warranty will not be valid for any

printer repairs that are related to the cartridge, nor for any problems due to ink contamination.

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You will invalidate the warranty of all printheads of the same color used in the printer subsequently,

unless and until the whole ink system (including ink tubes) is replaced.

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Print quality may be impaired.

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The printer will be unable to estimate the ink level in the cartridge, and will report it as empty.

If you decide to use refilled or non-HP ink cartridges, you will need to follow these instructions to make

the printer use a cartridge that it believes to be empty.

1. Install the cartridge in the printer (see

Insert an ink cartridge on page 91).

2. The front panel will complain that the cartridge is empty, and the cartridge removal process will

start. Press the Cancel key to stop this automatic process.

3. At the front panel, select the

icon.

4. Highlight Replace ink cartridges, but do not select it.

5. Press the Cancel key and the Up key at the same time, and hold them down for at least two seconds.

6. The front panel will display a series of warning messages. In response to each message, press

the Cancel key to cancel the process, or the Select key to confirm that you wish to continue.

When you have pressed Select in response to all warning messages, the front panel will give the usual

ink cartridge status display, but the refilled or non-HP cartridge will be shown as empty with a warning

sign.

Printheads

In order to increase printing speed, two printheads are connected to each ink cartridge, giving eight

printheads in total.

The printheads are extremely durable and do not need to be replaced every time an ink cartridge is

replaced. They will continue giving excellent results even if the ink cartridges are low in ink.

To maintain optimum print quality, the printheads are automatically tested at regular intervals, and

automatically serviced if necessary. This takes a little time and will occasionally delay printing.

When a printhead eventually needs to be replaced, the front panel will tell you so.

CAUTION: Whenever you buy a new printhead, you get a new printhead cleaner with it. When you

replace a printhead, always replace the printhead cleaner at the same time. Leaving the old printhead

cleaner in the printer will shorten the new printhead's life and possibly damage the printer.

ENWW Printheads 197

About ink system

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Hp Designjet 4520 Printer series User Manual Page 207