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6-6 Print Quality
HP DesignJet 430, 450C and 455CA Printers
Nozzles not printing (Nozzles Out)
1 If the diagonally stepped lines are broken in one or more steps it indicates
that this specific nozzle(s) may be blocked and are not printing.
Nozzles misdirected
If all the stepped lines are visible in the pattern, then all the cartridge nozzles
are printing. However the nozzles could still be misdirected, possibly due to
some dried ink around the nozzles.
1 In the top pattern, marked with numbers, if the diagonally stepped lines
are not equally positioned in every step it indicates that this specific
nozzle(s) may be misdirected.
Nozzles Problem 1: Some cartridge nozzles, in any one color, are not
printing.
Nozzles Problem 2: Cartridge nozzles are misdirected in any one color.
Corrective Action: Try the following steps:
1 Prime the Cartridges and print the
PrintĆQuality Plot again to see if there has been
any improvement.
2 If the error is still present, replace the failing
cartridge and print the PrintĆQuality Plot again.
3 If the error continues try the following:
D Replace the Trailing Cable ' page 8Ć8.
D Replace the Carriage Assembly ' page 8Ć37.
D Replace the Electronics Module ' page 8Ć13.
Only replace one component at a time and
check if the problem has gone before
replacing another component. Using this
procedure you will be able to determine
exactly which component failed.