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
ENWW111
Maintenance
 

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....

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...

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....

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...

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...

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
ENWW117
Diagnostics
 

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...

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...

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...