HP Designjet 4520 HD User Manual

							11 How do I... (printer maintenance topics)
●Clean the exterior of the printer
●
Clean the input rollers
●
Clean the platen
●
Lubricate the printhead carriage
●
Maintain the ink cartridges
●
Move or store my printer
●
Update my printers firmware
●
Update my printers software
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							Clean the exterior of the printer
Clean the outside of the printer and all other parts of the printer that you regularly touch as part of normal
operation (e.g. ink cartridge drawer handles) as required with a damp sponge or a soft cloth and a mild
household cleaner such as non-abrasive liquid soap.
WARNING!To avoid an electric shock, make sure that the printer is switched OFF and unplugged
before you clean it. Do not let water get inside the printer.
CAUTION:Do not use abrasive cleaners on the printer.
Clean the input rollers
You should plan to clean your printers input rollers on a regular basis, once a year or when you notice
a loss of roll switching performance.
1.Unload all paper from the printer.
2.
Go to the front panel and select the 
 icon then Printer configuration > Clean drawer roller.
This command will rotate the roller so that the whole circumference can be cleaned.
3.Use a clean, absorbent lint-free cloth, slightly dampened with isopropyl alcohol, to wipe off any dirt
or paper particles from the input rollers.
NOTE:Isopropyl alcohol is not provided in the Maintenance Kit.
4.When you have finished cleaning a roller, press the Select key on the front panel to stop the rotation.
Clean the platen
You should plan to clean your printers platen on a regular basis, every few months or when needed.
NOTE:If you print on wide paper after using narrower paper for some time, you may find that the left
side of the platen has become dirty and will leave marks on the back of the paper if not cleaned.
Follow these instructions to clean the platen.
1.Unload all paper from the printer.
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							2.Open the window.
3.With a dry brush, remove ink deposits from the cutter groove.
4.With the same dry brush, remove ink deposits from the platen surface.
5.At the front panel, select the  icon, then Paper handling options > Clean roller > Clean
platen. This command will rotate the small rollers on the platen so that the whole circumference
can be cleaned.
NOTE:If you find that this command is not available, please download the latest firmware revision
(see 
Update my printers firmware on page 116). This option is available from Fall 2007.
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							6.Use a clean, absorbent lint-free cloth, slightly dampened with isopropyl alcohol, to wipe off loosened
ink deposits from the platen.
NOTE:Isopropyl alcohol is not provided in the Maintenance Kit.
CAUTION:Do not use commercial cleaners or abrasive cleaners. Do not wet the platen directly
because you will leave too much moisture behind.
7.Clean the cutter ramp with the damp cloth.
8.Clean the exposed part of the wheels with a dry cloth. Ideally you should clean the whole
circumference of these wheels.
Lubricate the printhead carriage
The printhead carriage occasionally (about once a year) needs lubrication to slide easily along the slider
rod.
1.To gain access to the carriage, go to the front panel and select the 
 icon, then Printhead
management > Replace printheads. The carriage will slide into the middle section of the printer.
CAUTION:If the carriage is left in the central part of the printer for more than seven minutes. it
will try to move back to its normal position in the right-hand end.
2.Take the bottle of oil from the Maintenance Kit that is supplied with your printer. A replacement kit
can be ordered if necessary.
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							3.Open the window and apply a few drops of oil from the Maintenance Kit to the pads on either side
of the carriage.
4.Apply a few drops of oil directly to the slider rod on either side of the carriage.
5.Close the window.
Maintain the ink cartridges
During the normal lifetime of a cartridge, no specific maintenance is required. However, in order to
maintain the best print quality, you should replace a cartridge when it has reached its expiration date,
which is the date marked on the cartridge plus 6 months.
Move or store my printer
If you need to move your printer or store it for an extended period of time, you need to prepare it properly
to avoid possible damage to it. To prepare your printer, follow the instructions below.
1.Do not remove the ink cartridges, printheads or printhead cleaners.
2.Make sure that no paper is loaded.
3.Make sure that the printhead carriage is located in the service station (the right-hand end of the
printer).
4.Make sure that the front panel displays Ready.
5.Switch off the power using the Power key on the front panel.
6.Also switch off the power switch at the rear of the printer.
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							7.Disconnect the printers power cable and any cables connecting the printer to a network, a computer
or a scanner.
8.If you have the HP Designjet 4520 stacker, disconnect and detach it.
NOTE:We strongly recommend that you do not try to disassemble the HP Designjet 4520 roll module.
Update my printers firmware
Your printers various functions are controlled by software that resides in the printer, otherwise known
as firmware.
From time to time firmware updates will be available from Hewlett-Packard. These updates increase
your printers functionality and enhance the features that your printer already possesses. Firmware can
be downloaded from the Internet and installed into your printer using the Embedded Web Servers
Firmware update page (found in the Settings tab).
If you are unable to use the Embedded Web Server because you do not have a TCP/IP connection to
your printer (for instance, when using USB or AppleTalk), you can obtain HP Designjet 4020 series
firmware updates and installation software from these Web pages:
●
http://www.hp.com/go/4020/firmware/
●
http://www.hp.com/go/4020ps/firmware/
And you can obtain HP Designjet 4520 series firmware updates and installation software from:
●
http://www.hp.com/go/4520/firmware/
●
http://www.hp.com/go/4520ps/firmware/
●
http://www.hp.com/go/4520mfp/firmware/
The firmware includes a set of the most commonly used media profiles. Extra media profiles can be
downloaded separately; see 
Download media profiles on page 40.
Update my printers software
From time to time software updates will be available from Hewlett-Packard. The latest printer software
can be downloaded from the following Web pages.
●
http://www.hp.com/go/4020/drivers/
●
http://www.hp.com/go/4020ps/drivers/
●
http://www.hp.com/go/4520/drivers/
●
http://www.hp.com/go/4520ps/drivers/
●
http://www.hp.com/go/4520mfp/drivers/
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							12 How do I... (Image Diagnostics Print
topics)
●Print the Image Diagnostics Print
●
Respond to the Image Diagnostics Print
●
Interpret Image Diagnostics part 1
●
Interpret Image Diagnostics part 2
●
Interpret Image Diagnostics part 3
●
If I still have a problem
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							Print the Image Diagnostics Print
The Image Diagnostics Print consists of patterns designed to highlight print quality problems. It helps
you to check whether you have a print quality problem, and if you have, what the cause of the problem
is and how to resolve it.
Before using the Image Diagnostics Print, check that you have been using appropriate print quality
settings (see 
Choose print quality settings on page 57).
To print the Image Diagnostics Print:
1.Ensure that you have paper of at least A3 size (29.7 × 42 cm = 11.7 × 16.5 in) loaded into the
printer. Use the same paper type that you were using when you detected a problem.
2.Ensure that the front panel has the same print quality settings that you were using when you
detected the problem (see 
Change the print quality on page 57). In the Image Diagnostics Print,
the only difference between drawings/text and images is that the latter uses more ink in part 2,
so that the colors appear darker.
To print the Image Diagnostics Print will take about two minutes if you choose images; sometimes
less if you choose drawings/text (depending on the paper type).
3.
At the printers front panel, select the 
 icon, then Internal prints > Image diagnostics prints
> Optim. for drawings/text or Optimize for images.
When the print is ready, see Respond to the Image Diagnostics Print on page 118.
Respond to the Image Diagnostics Print
The Image Diagnostics Print is in three numbered parts.
1.Part 1 tests printhead alignment. See 
Interpret Image Diagnostics part 1 on page 118.
2.Part 2 tests printhead performance and the paper advance mechanism. See 
Interpret Image
Diagnostics part 2 on page 119.
3.If Part 2 has revealed a printhead problem, Part 3 identifies which of the eight printheads is
responsible for it. See 
Interpret Image Diagnostics part 3 on page 121.
If Part 2 has not revealed any problem, you can and should ignore Part 3.
Interpret Image Diagnostics part 1
The purpose of part 1 is to identify color-to-color alignment and bidirectional alignment problems.
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							If you have horizontal misalignment, you will see something like this:
If you have vertical misalignment, you will see something like this:
If you have bidirectional misalignment, you will see something like this:
Corrective action
1.Align the printheads, using the same paper type with which you were experiencing unacceptable
print quality, if feasible (some paper types are not suitable for printhead alignment). See 
Align the
printheads on page 101.
2.If there is no improvement in print quality, contact your customer service representative.
Interpret Image Diagnostics part 2
The purpose of part 2 is to test whether the printheads and the paper advance mechanism are working
correctly. This part of the print should not be used to check for color consistency or accuracy.
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							Banding
Banding has occurred when you see repetitive horizontal bands within the printed image. They can
appear as light bands:
or dark bands:
or as a more gradual wave effect:
Horizontal bands across strips of one color only
If a printhead is faulty, you will see horizontal bands across strips of one color only; or at least the
horizontal bands will be much more noticeable in one color than in the others.
NOTE:Banding in the green strips is more difficult to see; and it may be caused by a yellow printhead
or by a cyan printhead. If you see banding only in the green strip, it is caused by a yellow printhead; if
you see banding in the green and cyan strips, it is caused by a cyan printhead.
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