HP Color LaserJet Enterprise CP4020 HP Designjet 4020 and 4520 Printer Series - Page 207

Printheads

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About ink system ● 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. ● 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. ● Print quality may be impaired. ● 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

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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.
●
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.
●
Print quality may be impaired.
●
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