HP Designjet 4520 HD User Manual

Insert an ink cartridge
1.Pick up the new ink cartridge and find the label identifying the ink color. Hold the ink cartridge so
that you can see the identifying colored label at the top of the side facing you.
2.Check that the colored label above the empty slot in the printer matches the color of the label on
the cartridge.
3.Insert the ink cartridge into the cartridge drawer.
Position the cartridge at the rear of the drawer as indicated below.
NOTE:A larger black ink cartridge is available that uses the...

5.When all cartridges have been inserted, close the door (push it until it clicks shut).
6.The front panel display confirms that all cartridges have been correctly inserted.
Remove a printhead
WARNING!Make sure the printer wheels are locked (the brake lever is pressed down) to prevent the
printer from moving.
Printhead replacement must be performed with the printer switched on at the power isolation switch.
1.At the printers front panel, select the 
 icon, then Printhead management > Replace
printheads....

4.Locate the carriage.
5.Pull up and release the latch on top of the carriage.
6.Lift up the cover. This will now give you access to the printheads.
7.To remove a printhead, lift up the blue handle.
ENWWRemove a printhead 93
Ink system
 

8.Using the blue handle, gently disengage the printhead.
9.Gently pull the blue handle upward until the printhead is released from the carriage.
CAUTION:Do not pull abruptly because this can damage the printhead.
10.The front panel display identifies the missing printhead.
Insert a printhead
1.If the printhead is new:
a.Remove the blue protective cap by pulling down on it.
94 Chapter 9   How do I... (ink system topics) ENWW
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b.Remove the clear protective tape from the printheads nozzles by pulling on the paper tab.
The printhead is designed to prevent you from accidentally inserting it into the wrong position.
Check that the colored label on the printhead matches the colored label of the carriage position
into which the printhead is to be inserted.
2.Insert the new printhead into its correct position in the carriage.
CAUTION:Insert the printhead slowly and vertically, straight down. It may be damaged if you
insert it too...

4.Insert any other printheads that need to be installed, and close the carriage cover.
When all the printheads have been inserted correctly and accepted by the printer, the printer will
beep.
NOTE:If the printer does not beep when you insert the printhead and the Replace message
appears on the front panel, the printhead may need to be reseated.
5.Latch the carriage cover.
When the carriage has been correctly latched, it looks like this:
6.Close the window.
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7.The front panel display confirms that all printheads are correctly inserted.
8.Now replace the printhead cleaners for any printheads that have been changed. See Remove a
printhead cleaner on page 102 and Insert a printhead cleaner on page 103.
CAUTION:Leaving the old printhead cleaner in the printer will shorten the new printheads life
and possibly damage the printer.
Manage printhead monitoring
The printer automatically checks the status of the printheads from time to time in order to monitor their...

This should be used for cleaning the electrical interconnects of both the printhead carriage and the
printhead, which should be done if the front panel persistently displays the Reseat or Replace message
next to the printhead.
1.Remove a new pre-moistened replacement sponge from its pouch.
A supply of sponges is included in the box with the wiper. If all sponges have been used, more can
be obtained by contacting your customer service representative.
2.Open the carriage interconnect wiper.
3.Load the...

4.Close the carriage interconnect wiper, trapping the sponge in place.
5.Open the printhead carriage latch and extract the printhead that has the problem, as indicated on
the front panel. See 
Remove a printhead on page 92.
6.Insert the carriage interconnect wiper into the printhead slot at the back. Wipe the electrical contacts
by inserting the tool between the electrical connections at the back of the slot and the steel spring
with the sponge facing away from you and towards the electrical contacts....

8.Take special care to clean all contacts thoroughly, including the ones at the lowest point of the
connector.
9.Using the same sponge, clean the lower strip of electrical contacts on the printhead (unless the
printhead is new), avoid touching the upper set of electrical contacts.
CAUTION:Do not touch the surface of the printhead containing the nozzles, which are easily
damaged.
10.After waiting a few moments to allow both connectors to dry, replace the printhead into the printhead
carriage. See 
Insert...