Brother GTX-4 Instruction Manual page 247

Step 1: Print out a nozzle check pattern
(1) Print out a nozzle check pattern (1st time).
<TIPS>

For details of the printing method of nozzle check pattern, refer to "7-2-1. Print out of the nozzle check pattern (checking on
the print heads) >>P.198".
(2) Check the result of the printed nozzle check pattern (1st time), and carry out the following procedures.
<TIPS>

To check the print result, refer to "7-2-1. Print out of the nozzle check pattern (checking on the print heads) >>P.198".

Even if the white print result is weak, since the white ink is ejected on one same spot through multiple nozzles, a relatively
large amount of ink volume will be used, and the firing problem of a single nozzle will not affect the print quality so much.
Even in a condition with weak lines, the print is performed without a problem.
Existence or nonexistence of a
nozzle that does not eject any
ink-jet droplets
Such a nozzle does not exist that
does not eject any ink-jet droplets
Such a nozzle exists that does not
eject any ink-jet droplets
<TIPS>

For information about replacing a filter, refer to "9-2-5. Replacing the color filter >>P.262".
Step 2: Perform the head cleaning
(1) Perform a normal cleaning.
<TIPS>

For details of the head cleaning method refer to "7-2-2. Head cleaning >>P.200".
(2) Print out a nozzle check pattern (2nd time).
If a number of non-firing of white head is observed in printing although such
non-firing problems do not occur in nozzle check pattern printing, please
contact your dealer.
If a number of non-firing of white head is observed in printing although such
non-firing problems do not occur in nozzle check pattern printing, replace
the filter. If non-firing cannot be resolved after replacing the filter, please
contact your dealer.
Proceed to Step 2.
247
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Troubleshooting