HP 1055CMHP - Manual (Page 166)

Print Quality
6-18
HP DesignJets 1050C and 1055CM Printers Service Manual
5 Go to the printer submenu and press Enter.
6 Go to Utilities/Test Prints/Print Quality and press Enter.
7 The printer will print a diagnostic test print. This will help you find
the source of the banding problem. Please wait as the process of
printing the Print Quality Test print takes a few minutes.
8 Look in the top section of your Print Quality Test. Check to see if
there are any of the following examples of defects in the print.
9 If there are any of the above defects visible in the test print, continue
with step 9a. If there are no defects in the top part of the print test,
go to directly to step 10.
a Go to the printer submenu and press Enter.
b Go to the Utilities/Recover Printheads and press Enter
c Select the printhead color that displayed the defects in the Print Quality
Test. If you are not sure which printhead color is giving you the problem
select all of the printheads.
Ready
MAGENTA
YELLOW
BLACK
CYAN
Ink
Printer submenu
UTILITIES
Test Prints
Full menu mode only
Print Quality
C607482
Missing lines Misdirected lines
Missing lines
Very obvious
unequal spacing
Ready
MAGENTA
YELLOW
BLACK
CYAN
Ink
Printer submenu
UTILITIES
Recover
Printheads
Full menu only